./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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-nzb-file-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 b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:56:12,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:56:12,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:56:12,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:56:12,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:56:12,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:56:12,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:56:12,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:56:12,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:56:12,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:56:12,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:56:12,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:56:12,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:56:12,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:56:12,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:56:12,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:56:12,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:56:12,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:56:12,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:56:12,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:56:12,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:56:12,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:56:12,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:56:12,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:56:12,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:56:12,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:56:12,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:56:12,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:56:12,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:56:12,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:56:12,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:56:12,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:56:12,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:56:12,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:56:12,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:56:12,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:56:12,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:56:12,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:56:12,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:56:12,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:56:12,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:56:12,860 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:56:12,891 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:56:12,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:56:12,892 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:56:12,893 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:56:12,893 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:56:12,894 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:56:12,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:56:12,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:56:12,894 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:56:12,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:56:12,895 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:56:12,896 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:56:12,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:56:12,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:56:12,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:56:12,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:56:12,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:56:12,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:56:12,897 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:56:12,897 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:56:12,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:56:12,897 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:56:12,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:56:12,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:56:12,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:56:12,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:56:12,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:56:12,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:56:12,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:56:12,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:56:12,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:56:12,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:56:12,899 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:56:12,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:56:12,900 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:56:12,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:56:12,900 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:56:12,900 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:56:13,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:56:13,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:56:13,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:56:13,214 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:56:13,214 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:56:13,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2023-08-30 14:56:14,338 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:56:14,516 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:56:14,521 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2023-08-30 14:56:14,536 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b5701e2e/9498deba56d44bcbacf3363cac2f47a0/FLAG2f7cb0c70 [2023-08-30 14:56:14,558 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b5701e2e/9498deba56d44bcbacf3363cac2f47a0 [2023-08-30 14:56:14,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:56:14,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:56:14,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:56:14,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:56:14,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:56:14,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:56:14" (1/1) ... [2023-08-30 14:56:14,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d94f55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:56:14, skipping insertion in model container [2023-08-30 14:56:14,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:56:14" (1/1) ... [2023-08-30 14:56:14,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:56:14,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:56:14,835 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-nzb-file-symm.wvr.c[4929,4942] [2023-08-30 14:56:14,843 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:56:14,858 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:56:14,894 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-nzb-file-symm.wvr.c[4929,4942] [2023-08-30 14:56:14,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:56:14,909 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:56:14,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:56:14 WrapperNode [2023-08-30 14:56:14,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:56:14,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:56:14,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:56:14,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:56:14,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:56:14" (1/1) ... [2023-08-30 14:56:14,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:56:14" (1/1) ... [2023-08-30 14:56:14,967 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 496 [2023-08-30 14:56:14,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:56:14,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:56:14,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:56:14,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:56:14,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:56:14" (1/1) ... [2023-08-30 14:56:14,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:56:14" (1/1) ... [2023-08-30 14:56:14,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:56:14" (1/1) ... [2023-08-30 14:56:14,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:56:14" (1/1) ... [2023-08-30 14:56:15,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:56:14" (1/1) ... [2023-08-30 14:56:15,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:56:14" (1/1) ... [2023-08-30 14:56:15,022 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:56:14" (1/1) ... [2023-08-30 14:56:15,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:56:14" (1/1) ... [2023-08-30 14:56:15,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:56:15,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:56:15,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:56:15,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:56:15,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:56:14" (1/1) ... [2023-08-30 14:56:15,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:56:15,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:56:15,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 14:56:15,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 14:56:15,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:56:15,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:56:15,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:56:15,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:56:15,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 14:56:15,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 14:56:15,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 14:56:15,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 14:56:15,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:56:15,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:56:15,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:56:15,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:56:15,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:56:15,128 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 14:56:15,305 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:56:15,306 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:56:15,994 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:56:16,017 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:56:16,018 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 14:56:16,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:56:16 BoogieIcfgContainer [2023-08-30 14:56:16,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:56:16,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:56:16,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:56:16,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:56:16,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:56:14" (1/3) ... [2023-08-30 14:56:16,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea107c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:56:16, skipping insertion in model container [2023-08-30 14:56:16,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:56:14" (2/3) ... [2023-08-30 14:56:16,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea107c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:56:16, skipping insertion in model container [2023-08-30 14:56:16,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:56:16" (3/3) ... [2023-08-30 14:56:16,029 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2023-08-30 14:56:16,036 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:56:16,044 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:56:16,044 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-08-30 14:56:16,045 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:56:16,205 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:56:16,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 573 places, 627 transitions, 1270 flow [2023-08-30 14:56:16,507 INFO L130 PetriNetUnfolder]: 61/625 cut-off events. [2023-08-30 14:56:16,508 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:56:16,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 625 events. 61/625 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2180 event pairs, 0 based on Foata normal form. 0/522 useless extension candidates. Maximal degree in co-relation 455. Up to 2 conditions per place. [2023-08-30 14:56:16,526 INFO L82 GeneralOperation]: Start removeDead. Operand has 573 places, 627 transitions, 1270 flow [2023-08-30 14:56:16,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 557 places, 610 transitions, 1232 flow [2023-08-30 14:56:16,543 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:56:16,553 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 557 places, 610 transitions, 1232 flow [2023-08-30 14:56:16,555 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 557 places, 610 transitions, 1232 flow [2023-08-30 14:56:16,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 557 places, 610 transitions, 1232 flow [2023-08-30 14:56:16,706 INFO L130 PetriNetUnfolder]: 60/610 cut-off events. [2023-08-30 14:56:16,706 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:56:16,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 619 conditions, 610 events. 60/610 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2125 event pairs, 0 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 455. Up to 2 conditions per place. [2023-08-30 14:56:16,747 INFO L119 LiptonReduction]: Number of co-enabled transitions 105228 [2023-08-30 14:56:58,764 INFO L134 LiptonReduction]: Checked pairs total: 103824 [2023-08-30 14:56:58,764 INFO L136 LiptonReduction]: Total number of compositions: 837 [2023-08-30 14:56:58,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:56:58,782 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;@633fad56, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:56:58,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2023-08-30 14:56:58,784 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:56:58,785 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:56:58,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:56:58,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:56:58,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:56:58,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:56:58,790 INFO L85 PathProgramCache]: Analyzing trace with hash 89996, now seen corresponding path program 1 times [2023-08-30 14:56:58,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:56:58,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058973387] [2023-08-30 14:56:58,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:56:58,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:56:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:56:59,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:56:59,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:56:59,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058973387] [2023-08-30 14:56:59,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058973387] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:56:59,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:56:59,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:56:59,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448430119] [2023-08-30 14:56:59,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:56:59,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:56:59,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:56:59,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:56:59,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:56:59,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 589 out of 1464 [2023-08-30 14:56:59,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 589.6666666666666) internal successors, (1769), 3 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:56:59,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:56:59,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 589 of 1464 [2023-08-30 14:56:59,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:00,045 INFO L130 PetriNetUnfolder]: 2393/3901 cut-off events. [2023-08-30 14:57:00,046 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2023-08-30 14:57:00,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7936 conditions, 3901 events. 2393/3901 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 22360 event pairs, 2010 based on Foata normal form. 2/1575 useless extension candidates. Maximal degree in co-relation 3816. Up to 1954 conditions per place. [2023-08-30 14:57:00,066 INFO L137 encePairwiseOnDemand]: 1443/1464 looper letters, 103 selfloop transitions, 4 changer transitions 2/109 dead transitions. [2023-08-30 14:57:00,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 109 transitions, 460 flow [2023-08-30 14:57:00,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:57:00,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:57:00,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1906 transitions. [2023-08-30 14:57:00,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397085610200364 [2023-08-30 14:57:00,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1906 transitions. [2023-08-30 14:57:00,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1906 transitions. [2023-08-30 14:57:00,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:00,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1906 transitions. [2023-08-30 14:57:00,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 635.3333333333334) internal successors, (1906), 3 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:00,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:00,108 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:00,110 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 152 flow. Second operand 3 states and 1906 transitions. [2023-08-30 14:57:00,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 109 transitions, 460 flow [2023-08-30 14:57:00,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 109 transitions, 444 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 14:57:00,119 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 151 flow [2023-08-30 14:57:00,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2023-08-30 14:57:00,123 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -13 predicate places. [2023-08-30 14:57:00,124 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 151 flow [2023-08-30 14:57:00,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 589.6666666666666) internal successors, (1769), 3 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:00,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:00,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:57:00,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:57:00,126 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:00,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:00,127 INFO L85 PathProgramCache]: Analyzing trace with hash 2799174, now seen corresponding path program 1 times [2023-08-30 14:57:00,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:00,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569978544] [2023-08-30 14:57:00,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:00,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:00,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:57:00,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:00,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569978544] [2023-08-30 14:57:00,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569978544] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:57:00,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016839416] [2023-08-30 14:57:00,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:00,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:57:00,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:57:00,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:57:00,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 14:57:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:00,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:57:00,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:57:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:57:00,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:57:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:57:00,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016839416] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:57:00,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:57:00,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 14:57:00,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351288986] [2023-08-30 14:57:00,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:57:00,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:57:00,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:00,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:57:00,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:57:00,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 589 out of 1464 [2023-08-30 14:57:00,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 151 flow. Second operand has 7 states, 7 states have (on average 590.1428571428571) internal successors, (4131), 7 states have internal predecessors, (4131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:00,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:00,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 589 of 1464 [2023-08-30 14:57:00,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:02,570 INFO L130 PetriNetUnfolder]: 5987/9746 cut-off events. [2023-08-30 14:57:02,571 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-08-30 14:57:02,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19654 conditions, 9746 events. 5987/9746 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 63459 event pairs, 5025 based on Foata normal form. 0/3936 useless extension candidates. Maximal degree in co-relation 15679. Up to 1951 conditions per place. [2023-08-30 14:57:02,658 INFO L137 encePairwiseOnDemand]: 1456/1464 looper letters, 245 selfloop transitions, 21 changer transitions 0/266 dead transitions. [2023-08-30 14:57:02,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 266 transitions, 1145 flow [2023-08-30 14:57:02,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:57:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:57:02,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4395 transitions. [2023-08-30 14:57:02,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428864168618267 [2023-08-30 14:57:02,670 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4395 transitions. [2023-08-30 14:57:02,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4395 transitions. [2023-08-30 14:57:02,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:02,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4395 transitions. [2023-08-30 14:57:02,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 627.8571428571429) internal successors, (4395), 7 states have internal predecessors, (4395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:02,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1464.0) internal successors, (11712), 8 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:02,705 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1464.0) internal successors, (11712), 8 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:02,706 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 151 flow. Second operand 7 states and 4395 transitions. [2023-08-30 14:57:02,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 266 transitions, 1145 flow [2023-08-30 14:57:02,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 266 transitions, 1131 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:57:02,713 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 282 flow [2023-08-30 14:57:02,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=282, PETRI_PLACES=63, PETRI_TRANSITIONS=74} [2023-08-30 14:57:02,714 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2023-08-30 14:57:02,714 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 282 flow [2023-08-30 14:57:02,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 590.1428571428571) internal successors, (4131), 7 states have internal predecessors, (4131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:02,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:02,720 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 14:57:02,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 14:57:02,925 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 [2023-08-30 14:57:02,926 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:02,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:02,926 INFO L85 PathProgramCache]: Analyzing trace with hash 86780876, now seen corresponding path program 1 times [2023-08-30 14:57:02,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:02,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834996527] [2023-08-30 14:57:02,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:02,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:03,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:57:03,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:03,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834996527] [2023-08-30 14:57:03,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834996527] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:57:03,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172520672] [2023-08-30 14:57:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:03,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:57:03,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:57:03,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:57:03,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 14:57:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:03,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:57:03,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:57:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:57:03,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:57:03,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172520672] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:57:03,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:57:03,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 14:57:03,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075037982] [2023-08-30 14:57:03,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:57:03,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:57:03,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:03,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:57:03,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:57:03,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 589 out of 1464 [2023-08-30 14:57:03,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 74 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 589.8) internal successors, (2949), 5 states have internal predecessors, (2949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:03,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:03,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 589 of 1464 [2023-08-30 14:57:03,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:04,971 INFO L130 PetriNetUnfolder]: 5981/9738 cut-off events. [2023-08-30 14:57:04,972 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2023-08-30 14:57:04,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19656 conditions, 9738 events. 5981/9738 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 64304 event pairs, 5025 based on Foata normal form. 2/3938 useless extension candidates. Maximal degree in co-relation 11774. Up to 5842 conditions per place. [2023-08-30 14:57:05,014 INFO L137 encePairwiseOnDemand]: 1458/1464 looper letters, 153 selfloop transitions, 9 changer transitions 0/162 dead transitions. [2023-08-30 14:57:05,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 162 transitions, 750 flow [2023-08-30 14:57:05,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:57:05,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:57:05,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3105 transitions. [2023-08-30 14:57:05,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42418032786885246 [2023-08-30 14:57:05,023 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3105 transitions. [2023-08-30 14:57:05,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3105 transitions. [2023-08-30 14:57:05,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:05,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3105 transitions. [2023-08-30 14:57:05,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 621.0) internal successors, (3105), 5 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:05,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1464.0) internal successors, (8784), 6 states have internal predecessors, (8784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:05,045 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1464.0) internal successors, (8784), 6 states have internal predecessors, (8784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:05,045 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 282 flow. Second operand 5 states and 3105 transitions. [2023-08-30 14:57:05,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 162 transitions, 750 flow [2023-08-30 14:57:05,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 162 transitions, 731 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:57:05,051 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 227 flow [2023-08-30 14:57:05,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2023-08-30 14:57:05,053 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2023-08-30 14:57:05,053 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 227 flow [2023-08-30 14:57:05,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 589.8) internal successors, (2949), 5 states have internal predecessors, (2949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:05,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:05,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:57:05,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 14:57:05,261 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 [2023-08-30 14:57:05,262 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:05,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:05,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1603500468, now seen corresponding path program 1 times [2023-08-30 14:57:05,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:05,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428368876] [2023-08-30 14:57:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:05,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:05,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:57:05,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:05,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428368876] [2023-08-30 14:57:05,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428368876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:57:05,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:57:05,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:57:05,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442864195] [2023-08-30 14:57:05,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:57:05,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:57:05,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:05,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:57:05,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:57:05,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-08-30 14:57:05,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 588.6666666666666) internal successors, (1766), 3 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:05,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:05,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-08-30 14:57:05,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:06,537 INFO L130 PetriNetUnfolder]: 4785/7793 cut-off events. [2023-08-30 14:57:06,537 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-30 14:57:06,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15739 conditions, 7793 events. 4785/7793 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 49905 event pairs, 4020 based on Foata normal form. 2/3155 useless extension candidates. Maximal degree in co-relation 15665. Up to 7789 conditions per place. [2023-08-30 14:57:06,568 INFO L137 encePairwiseOnDemand]: 1459/1464 looper letters, 58 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2023-08-30 14:57:06,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 353 flow [2023-08-30 14:57:06,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:57:06,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:57:06,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1819 transitions. [2023-08-30 14:57:06,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41416211293260474 [2023-08-30 14:57:06,574 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1819 transitions. [2023-08-30 14:57:06,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1819 transitions. [2023-08-30 14:57:06,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:06,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1819 transitions. [2023-08-30 14:57:06,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 606.3333333333334) internal successors, (1819), 3 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:06,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:06,600 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:06,600 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 227 flow. Second operand 3 states and 1819 transitions. [2023-08-30 14:57:06,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 353 flow [2023-08-30 14:57:06,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 65 transitions, 340 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 14:57:06,603 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 233 flow [2023-08-30 14:57:06,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2023-08-30 14:57:06,605 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2023-08-30 14:57:06,605 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 233 flow [2023-08-30 14:57:06,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 588.6666666666666) internal successors, (1766), 3 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:06,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:06,606 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 14:57:06,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:57:06,607 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:06,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:06,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1792338020, now seen corresponding path program 2 times [2023-08-30 14:57:06,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:06,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188681068] [2023-08-30 14:57:06,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:06,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:57:06,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:06,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188681068] [2023-08-30 14:57:06,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188681068] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:57:06,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375310952] [2023-08-30 14:57:06,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:57:06,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:57:06,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:57:06,701 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:57:06,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 14:57:06,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:57:06,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:57:06,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:57:06,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:57:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:57:06,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:57:06,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375310952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:57:06,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:57:06,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 14:57:06,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305271878] [2023-08-30 14:57:06,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:57:06,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:57:06,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:06,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:57:06,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:57:06,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 591 out of 1464 [2023-08-30 14:57:06,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 592.0) internal successors, (1776), 3 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:06,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:06,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 591 of 1464 [2023-08-30 14:57:06,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:07,904 INFO L130 PetriNetUnfolder]: 4785/7791 cut-off events. [2023-08-30 14:57:07,904 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2023-08-30 14:57:07,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15734 conditions, 7791 events. 4785/7791 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 49828 event pairs, 4020 based on Foata normal form. 2/3153 useless extension candidates. Maximal degree in co-relation 15673. Up to 7791 conditions per place. [2023-08-30 14:57:07,931 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 62 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2023-08-30 14:57:07,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 339 flow [2023-08-30 14:57:07,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:57:07,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:57:07,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1827 transitions. [2023-08-30 14:57:07,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41598360655737704 [2023-08-30 14:57:07,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1827 transitions. [2023-08-30 14:57:07,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1827 transitions. [2023-08-30 14:57:07,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:07,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1827 transitions. [2023-08-30 14:57:07,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 609.0) internal successors, (1827), 3 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:07,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:07,946 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:07,946 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 233 flow. Second operand 3 states and 1827 transitions. [2023-08-30 14:57:07,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 339 flow [2023-08-30 14:57:07,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 299 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-30 14:57:07,948 INFO L231 Difference]: Finished difference. Result has 57 places, 63 transitions, 175 flow [2023-08-30 14:57:07,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=57, PETRI_TRANSITIONS=63} [2023-08-30 14:57:07,949 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -13 predicate places. [2023-08-30 14:57:07,949 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 63 transitions, 175 flow [2023-08-30 14:57:07,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 592.0) internal successors, (1776), 3 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:07,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:07,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:57:07,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:57:08,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:57:08,156 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:08,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:08,156 INFO L85 PathProgramCache]: Analyzing trace with hash -232736656, now seen corresponding path program 1 times [2023-08-30 14:57:08,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:08,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739566646] [2023-08-30 14:57:08,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:08,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:57:08,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:08,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739566646] [2023-08-30 14:57:08,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739566646] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:57:08,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:57:08,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:57:08,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461538615] [2023-08-30 14:57:08,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:57:08,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:57:08,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:08,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:57:08,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:57:08,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-08-30 14:57:08,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 63 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:08,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:08,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-08-30 14:57:08,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:09,039 INFO L130 PetriNetUnfolder]: 4301/6995 cut-off events. [2023-08-30 14:57:09,040 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-30 14:57:09,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14115 conditions, 6995 events. 4301/6995 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 43924 event pairs, 3576 based on Foata normal form. 0/2899 useless extension candidates. Maximal degree in co-relation 14106. Up to 6995 conditions per place. [2023-08-30 14:57:09,063 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 60 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2023-08-30 14:57:09,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 293 flow [2023-08-30 14:57:09,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:57:09,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:57:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1831 transitions. [2023-08-30 14:57:09,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4168943533697632 [2023-08-30 14:57:09,070 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1831 transitions. [2023-08-30 14:57:09,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1831 transitions. [2023-08-30 14:57:09,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:09,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1831 transitions. [2023-08-30 14:57:09,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 610.3333333333334) internal successors, (1831), 3 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:09,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:09,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:09,081 INFO L175 Difference]: Start difference. First operand has 57 places, 63 transitions, 175 flow. Second operand 3 states and 1831 transitions. [2023-08-30 14:57:09,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 293 flow [2023-08-30 14:57:09,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:57:09,082 INFO L231 Difference]: Finished difference. Result has 56 places, 61 transitions, 172 flow [2023-08-30 14:57:09,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=56, PETRI_TRANSITIONS=61} [2023-08-30 14:57:09,085 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -14 predicate places. [2023-08-30 14:57:09,085 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 61 transitions, 172 flow [2023-08-30 14:57:09,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:09,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:09,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:57:09,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:57:09,086 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:09,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:09,090 INFO L85 PathProgramCache]: Analyzing trace with hash -232736595, now seen corresponding path program 1 times [2023-08-30 14:57:09,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:09,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644073749] [2023-08-30 14:57:09,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:09,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:09,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:57:09,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:09,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644073749] [2023-08-30 14:57:09,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644073749] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:57:09,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807636351] [2023-08-30 14:57:09,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:09,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:57:09,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:57:09,175 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:57:09,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 14:57:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:09,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:57:09,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:57:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:57:09,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:57:09,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:57:09,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807636351] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:57:09,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:57:09,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-30 14:57:09,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166189342] [2023-08-30 14:57:09,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:57:09,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 14:57:09,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:09,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 14:57:09,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:57:09,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 1464 [2023-08-30 14:57:09,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 172 flow. Second operand has 8 states, 8 states have (on average 584.875) internal successors, (4679), 8 states have internal predecessors, (4679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:09,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:09,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 1464 [2023-08-30 14:57:09,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:09,765 INFO L130 PetriNetUnfolder]: 1076/1757 cut-off events. [2023-08-30 14:57:09,765 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 14:57:09,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3562 conditions, 1757 events. 1076/1757 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8478 event pairs, 894 based on Foata normal form. 6/739 useless extension candidates. Maximal degree in co-relation 3552. Up to 1750 conditions per place. [2023-08-30 14:57:09,773 INFO L137 encePairwiseOnDemand]: 1459/1464 looper letters, 48 selfloop transitions, 10 changer transitions 0/58 dead transitions. [2023-08-30 14:57:09,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 271 flow [2023-08-30 14:57:09,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:57:09,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:57:09,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3562 transitions. [2023-08-30 14:57:09,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40551001821493626 [2023-08-30 14:57:09,782 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3562 transitions. [2023-08-30 14:57:09,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3562 transitions. [2023-08-30 14:57:09,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:09,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3562 transitions. [2023-08-30 14:57:09,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 593.6666666666666) internal successors, (3562), 6 states have internal predecessors, (3562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:09,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1464.0) internal successors, (10248), 7 states have internal predecessors, (10248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:09,802 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1464.0) internal successors, (10248), 7 states have internal predecessors, (10248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:09,803 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 172 flow. Second operand 6 states and 3562 transitions. [2023-08-30 14:57:09,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 271 flow [2023-08-30 14:57:09,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:57:09,804 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 192 flow [2023-08-30 14:57:09,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-08-30 14:57:09,806 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2023-08-30 14:57:09,806 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 192 flow [2023-08-30 14:57:09,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 584.875) internal successors, (4679), 8 states have internal predecessors, (4679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:09,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:09,807 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2023-08-30 14:57:09,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 14:57:10,015 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 [2023-08-30 14:57:10,015 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:10,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:10,015 INFO L85 PathProgramCache]: Analyzing trace with hash 443889036, now seen corresponding path program 2 times [2023-08-30 14:57:10,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:10,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691926520] [2023-08-30 14:57:10,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:10,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:57:10,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:10,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691926520] [2023-08-30 14:57:10,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691926520] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:57:10,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820937464] [2023-08-30 14:57:10,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:57:10,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:57:10,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:57:10,120 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:57:10,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 14:57:10,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:57:10,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:57:10,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:57:10,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:57:10,290 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-30 14:57:10,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:57:10,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820937464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:57:10,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:57:10,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-30 14:57:10,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018686208] [2023-08-30 14:57:10,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:57:10,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:57:10,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:10,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:57:10,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:57:10,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-08-30 14:57:10,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:10,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:10,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-08-30 14:57:10,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:10,574 INFO L130 PetriNetUnfolder]: 961/1568 cut-off events. [2023-08-30 14:57:10,574 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 14:57:10,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3205 conditions, 1568 events. 961/1568 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7357 event pairs, 789 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 3191. Up to 1568 conditions per place. [2023-08-30 14:57:10,579 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 14:57:10,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 300 flow [2023-08-30 14:57:10,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:57:10,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:57:10,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1829 transitions. [2023-08-30 14:57:10,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41643897996357016 [2023-08-30 14:57:10,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1829 transitions. [2023-08-30 14:57:10,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1829 transitions. [2023-08-30 14:57:10,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:10,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1829 transitions. [2023-08-30 14:57:10,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 609.6666666666666) internal successors, (1829), 3 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:10,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:10,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:10,596 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 192 flow. Second operand 3 states and 1829 transitions. [2023-08-30 14:57:10,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 300 flow [2023-08-30 14:57:10,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 280 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 14:57:10,598 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 170 flow [2023-08-30 14:57:10,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-08-30 14:57:10,598 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2023-08-30 14:57:10,599 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 170 flow [2023-08-30 14:57:10,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:10,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:10,599 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2023-08-30 14:57:10,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 14:57:10,805 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 [2023-08-30 14:57:10,805 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:10,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:10,806 INFO L85 PathProgramCache]: Analyzing trace with hash 443889035, now seen corresponding path program 1 times [2023-08-30 14:57:10,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:10,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408983250] [2023-08-30 14:57:10,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:10,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:57:10,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:10,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408983250] [2023-08-30 14:57:10,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408983250] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:57:10,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217124017] [2023-08-30 14:57:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:10,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:57:10,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:57:10,951 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:57:10,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 14:57:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:11,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 14:57:11,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:57:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:57:11,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:57:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:57:11,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217124017] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:57:11,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:57:11,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:57:11,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730120946] [2023-08-30 14:57:11,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:57:11,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:57:11,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:11,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:57:11,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:57:11,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 1464 [2023-08-30 14:57:11,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 170 flow. Second operand has 13 states, 13 states have (on average 584.3846153846154) internal successors, (7597), 13 states have internal predecessors, (7597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:11,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:11,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 1464 [2023-08-30 14:57:11,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:11,677 INFO L130 PetriNetUnfolder]: 961/1570 cut-off events. [2023-08-30 14:57:11,677 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 14:57:11,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 1570 events. 961/1570 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7284 event pairs, 789 based on Foata normal form. 2/676 useless extension candidates. Maximal degree in co-relation 3188. Up to 1561 conditions per place. [2023-08-30 14:57:11,681 INFO L137 encePairwiseOnDemand]: 1459/1464 looper letters, 46 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2023-08-30 14:57:11,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 58 transitions, 294 flow [2023-08-30 14:57:11,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:57:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:57:11,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4141 transitions. [2023-08-30 14:57:11,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4040788446526151 [2023-08-30 14:57:11,698 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4141 transitions. [2023-08-30 14:57:11,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4141 transitions. [2023-08-30 14:57:11,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:11,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4141 transitions. [2023-08-30 14:57:11,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 591.5714285714286) internal successors, (4141), 7 states have internal predecessors, (4141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:11,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1464.0) internal successors, (11712), 8 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:11,718 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1464.0) internal successors, (11712), 8 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:11,718 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 170 flow. Second operand 7 states and 4141 transitions. [2023-08-30 14:57:11,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 58 transitions, 294 flow [2023-08-30 14:57:11,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 58 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:57:11,720 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 211 flow [2023-08-30 14:57:11,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=211, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-08-30 14:57:11,721 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2023-08-30 14:57:11,721 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 211 flow [2023-08-30 14:57:11,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 584.3846153846154) internal successors, (7597), 13 states have internal predecessors, (7597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:11,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:11,723 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2023-08-30 14:57:11,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 14:57:11,929 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 [2023-08-30 14:57:11,929 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:11,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:11,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1858375828, now seen corresponding path program 2 times [2023-08-30 14:57:11,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:11,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162199640] [2023-08-30 14:57:11,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:11,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:12,031 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:57:12,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:12,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162199640] [2023-08-30 14:57:12,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162199640] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:57:12,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:57:12,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:57:12,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581847829] [2023-08-30 14:57:12,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:57:12,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:57:12,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:12,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:57:12,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:57:12,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-08-30 14:57:12,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:12,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:12,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-08-30 14:57:12,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:12,245 INFO L130 PetriNetUnfolder]: 852/1391 cut-off events. [2023-08-30 14:57:12,245 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 14:57:12,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2861 conditions, 1391 events. 852/1391 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6237 event pairs, 690 based on Foata normal form. 0/615 useless extension candidates. Maximal degree in co-relation 2845. Up to 1391 conditions per place. [2023-08-30 14:57:12,251 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 14:57:12,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 319 flow [2023-08-30 14:57:12,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:57:12,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:57:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1827 transitions. [2023-08-30 14:57:12,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41598360655737704 [2023-08-30 14:57:12,256 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1827 transitions. [2023-08-30 14:57:12,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1827 transitions. [2023-08-30 14:57:12,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:12,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1827 transitions. [2023-08-30 14:57:12,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 609.0) internal successors, (1827), 3 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:12,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:12,264 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:12,264 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 211 flow. Second operand 3 states and 1827 transitions. [2023-08-30 14:57:12,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 319 flow [2023-08-30 14:57:12,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 299 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 14:57:12,266 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 189 flow [2023-08-30 14:57:12,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-08-30 14:57:12,266 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -10 predicate places. [2023-08-30 14:57:12,267 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 189 flow [2023-08-30 14:57:12,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:12,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:12,267 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2023-08-30 14:57:12,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 14:57:12,268 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:12,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:12,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1858375829, now seen corresponding path program 1 times [2023-08-30 14:57:12,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:12,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9444967] [2023-08-30 14:57:12,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:12,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:12,324 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:57:12,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:12,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9444967] [2023-08-30 14:57:12,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9444967] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:57:12,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:57:12,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:57:12,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934035851] [2023-08-30 14:57:12,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:57:12,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:57:12,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:12,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:57:12,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:57:12,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-08-30 14:57:12,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:12,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:12,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-08-30 14:57:12,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:12,587 INFO L130 PetriNetUnfolder]: 749/1222 cut-off events. [2023-08-30 14:57:12,587 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 14:57:12,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 1222 events. 749/1222 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5287 event pairs, 597 based on Foata normal form. 0/558 useless extension candidates. Maximal degree in co-relation 2497. Up to 1222 conditions per place. [2023-08-30 14:57:12,593 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 53 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-08-30 14:57:12,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 293 flow [2023-08-30 14:57:12,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:57:12,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:57:12,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1825 transitions. [2023-08-30 14:57:12,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415528233151184 [2023-08-30 14:57:12,600 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1825 transitions. [2023-08-30 14:57:12,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1825 transitions. [2023-08-30 14:57:12,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:12,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1825 transitions. [2023-08-30 14:57:12,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 608.3333333333334) internal successors, (1825), 3 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:12,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:12,609 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:12,610 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 189 flow. Second operand 3 states and 1825 transitions. [2023-08-30 14:57:12,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 293 flow [2023-08-30 14:57:12,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 54 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:57:12,611 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 186 flow [2023-08-30 14:57:12,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-08-30 14:57:12,612 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2023-08-30 14:57:12,612 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 186 flow [2023-08-30 14:57:12,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 595.3333333333334) internal successors, (1786), 3 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:12,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:12,613 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2023-08-30 14:57:12,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:57:12,613 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:12,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:12,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1775075069, now seen corresponding path program 1 times [2023-08-30 14:57:12,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:12,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828591158] [2023-08-30 14:57:12,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:12,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:57:12,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:12,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828591158] [2023-08-30 14:57:12,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828591158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:57:12,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:57:12,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:57:12,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539012634] [2023-08-30 14:57:12,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:57:12,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:57:12,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:12,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:57:12,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:57:12,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-08-30 14:57:12,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 595.6666666666666) internal successors, (1787), 3 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:12,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:12,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-08-30 14:57:12,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:12,933 INFO L130 PetriNetUnfolder]: 652/1063 cut-off events. [2023-08-30 14:57:12,933 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-30 14:57:12,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2196 conditions, 1063 events. 652/1063 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4422 event pairs, 510 based on Foata normal form. 0/503 useless extension candidates. Maximal degree in co-relation 2178. Up to 1063 conditions per place. [2023-08-30 14:57:12,938 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 51 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-08-30 14:57:12,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 286 flow [2023-08-30 14:57:12,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:57:12,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:57:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1823 transitions. [2023-08-30 14:57:12,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4150728597449909 [2023-08-30 14:57:12,942 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1823 transitions. [2023-08-30 14:57:12,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1823 transitions. [2023-08-30 14:57:12,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:12,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1823 transitions. [2023-08-30 14:57:12,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 607.6666666666666) internal successors, (1823), 3 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:12,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:12,949 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:12,949 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 186 flow. Second operand 3 states and 1823 transitions. [2023-08-30 14:57:12,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 286 flow [2023-08-30 14:57:12,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:57:12,951 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 183 flow [2023-08-30 14:57:12,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-08-30 14:57:12,953 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2023-08-30 14:57:12,953 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 183 flow [2023-08-30 14:57:12,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 595.6666666666666) internal successors, (1787), 3 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:12,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:12,954 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2023-08-30 14:57:12,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:57:12,954 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:12,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:12,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1775075023, now seen corresponding path program 1 times [2023-08-30 14:57:12,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:12,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27935614] [2023-08-30 14:57:12,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:12,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:13,009 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:57:13,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:13,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27935614] [2023-08-30 14:57:13,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27935614] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:57:13,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:57:13,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:57:13,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121529398] [2023-08-30 14:57:13,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:57:13,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:57:13,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:13,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:57:13,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:57:13,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-08-30 14:57:13,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 589.6666666666666) internal successors, (1769), 3 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:13,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:13,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-08-30 14:57:13,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:13,390 INFO L130 PetriNetUnfolder]: 971/1580 cut-off events. [2023-08-30 14:57:13,390 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-30 14:57:13,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3240 conditions, 1580 events. 971/1580 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6623 event pairs, 510 based on Foata normal form. 0/820 useless extension candidates. Maximal degree in co-relation 3221. Up to 1064 conditions per place. [2023-08-30 14:57:13,396 INFO L137 encePairwiseOnDemand]: 1453/1464 looper letters, 75 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-30 14:57:13,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 389 flow [2023-08-30 14:57:13,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:57:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:57:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1837 transitions. [2023-08-30 14:57:13,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41826047358834245 [2023-08-30 14:57:13,400 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1837 transitions. [2023-08-30 14:57:13,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1837 transitions. [2023-08-30 14:57:13,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:13,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1837 transitions. [2023-08-30 14:57:13,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 612.3333333333334) internal successors, (1837), 3 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:13,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:13,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:13,408 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 183 flow. Second operand 3 states and 1837 transitions. [2023-08-30 14:57:13,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 389 flow [2023-08-30 14:57:13,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 77 transitions, 388 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:57:13,410 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 210 flow [2023-08-30 14:57:13,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2023-08-30 14:57:13,410 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -10 predicate places. [2023-08-30 14:57:13,411 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 210 flow [2023-08-30 14:57:13,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 589.6666666666666) internal successors, (1769), 3 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:13,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:13,411 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:57:13,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:57:13,411 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:13,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:13,412 INFO L85 PathProgramCache]: Analyzing trace with hash -751514120, now seen corresponding path program 1 times [2023-08-30 14:57:13,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:13,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805007132] [2023-08-30 14:57:13,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:13,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:57:13,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:13,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805007132] [2023-08-30 14:57:13,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805007132] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:57:13,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:57:13,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:57:13,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445101317] [2023-08-30 14:57:13,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:57:13,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:57:13,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:13,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:57:13,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:57:13,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-08-30 14:57:13,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 590.3333333333334) internal successors, (1771), 3 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:13,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:13,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-08-30 14:57:13,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:13,953 INFO L130 PetriNetUnfolder]: 1159/1888 cut-off events. [2023-08-30 14:57:13,953 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2023-08-30 14:57:13,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4169 conditions, 1888 events. 1159/1888 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8576 event pairs, 769 based on Foata normal form. 0/1108 useless extension candidates. Maximal degree in co-relation 4149. Up to 1581 conditions per place. [2023-08-30 14:57:13,960 INFO L137 encePairwiseOnDemand]: 1456/1464 looper letters, 78 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-08-30 14:57:13,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 80 transitions, 451 flow [2023-08-30 14:57:13,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:57:13,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:57:13,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1835 transitions. [2023-08-30 14:57:13,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41780510018214934 [2023-08-30 14:57:13,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1835 transitions. [2023-08-30 14:57:13,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1835 transitions. [2023-08-30 14:57:13,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:13,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1835 transitions. [2023-08-30 14:57:13,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 611.6666666666666) internal successors, (1835), 3 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:13,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:13,972 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:13,972 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 210 flow. Second operand 3 states and 1835 transitions. [2023-08-30 14:57:13,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 80 transitions, 451 flow [2023-08-30 14:57:13,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:57:13,974 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 230 flow [2023-08-30 14:57:13,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2023-08-30 14:57:13,975 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -8 predicate places. [2023-08-30 14:57:13,975 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 230 flow [2023-08-30 14:57:13,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 590.3333333333334) internal successors, (1771), 3 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:13,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:13,976 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:57:13,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:57:13,976 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:13,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:13,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1822098570, now seen corresponding path program 1 times [2023-08-30 14:57:13,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:13,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842144043] [2023-08-30 14:57:13,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:13,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:14,053 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-30 14:57:14,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:14,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842144043] [2023-08-30 14:57:14,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842144043] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:57:14,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:57:14,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:57:14,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509484837] [2023-08-30 14:57:14,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:57:14,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:57:14,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:14,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:57:14,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:57:14,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-08-30 14:57:14,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 596.6666666666666) internal successors, (1790), 3 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:14,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:14,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-08-30 14:57:14,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:14,495 INFO L130 PetriNetUnfolder]: 1031/1678 cut-off events. [2023-08-30 14:57:14,495 INFO L131 PetriNetUnfolder]: For 311/311 co-relation queries the response was YES. [2023-08-30 14:57:14,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4201 conditions, 1678 events. 1031/1678 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7110 event pairs, 825 based on Foata normal form. 0/1190 useless extension candidates. Maximal degree in co-relation 4180. Up to 1678 conditions per place. [2023-08-30 14:57:14,504 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 51 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-08-30 14:57:14,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 52 transitions, 326 flow [2023-08-30 14:57:14,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:57:14,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:57:14,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1821 transitions. [2023-08-30 14:57:14,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146174863387978 [2023-08-30 14:57:14,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1821 transitions. [2023-08-30 14:57:14,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1821 transitions. [2023-08-30 14:57:14,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:14,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1821 transitions. [2023-08-30 14:57:14,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 607.0) internal successors, (1821), 3 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:14,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:14,517 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:14,517 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 230 flow. Second operand 3 states and 1821 transitions. [2023-08-30 14:57:14,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 52 transitions, 326 flow [2023-08-30 14:57:14,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 52 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:57:14,519 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 222 flow [2023-08-30 14:57:14,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2023-08-30 14:57:14,520 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -9 predicate places. [2023-08-30 14:57:14,520 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 222 flow [2023-08-30 14:57:14,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 596.6666666666666) internal successors, (1790), 3 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:14,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:14,521 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:57:14,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 14:57:14,521 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:14,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:14,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1822098483, now seen corresponding path program 1 times [2023-08-30 14:57:14,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:14,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115062421] [2023-08-30 14:57:14,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:14,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:14,677 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:57:14,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:14,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115062421] [2023-08-30 14:57:14,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115062421] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:57:14,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142745541] [2023-08-30 14:57:14,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:14,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:57:14,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:57:14,679 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:57:14,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 14:57:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:14,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:57:14,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:57:14,863 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:57:14,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:57:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:57:14,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142745541] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:57:14,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:57:14,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:57:14,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204500951] [2023-08-30 14:57:14,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:57:14,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:57:14,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:14,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:57:14,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:57:15,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-08-30 14:57:15,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 589.2857142857143) internal successors, (4125), 7 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:15,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:15,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-08-30 14:57:15,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:15,963 INFO L130 PetriNetUnfolder]: 2099/3094 cut-off events. [2023-08-30 14:57:15,963 INFO L131 PetriNetUnfolder]: For 290/290 co-relation queries the response was YES. [2023-08-30 14:57:15,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7804 conditions, 3094 events. 2099/3094 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 13263 event pairs, 410 based on Foata normal form. 0/1976 useless extension candidates. Maximal degree in co-relation 7782. Up to 1103 conditions per place. [2023-08-30 14:57:15,981 INFO L137 encePairwiseOnDemand]: 1457/1464 looper letters, 171 selfloop transitions, 17 changer transitions 0/188 dead transitions. [2023-08-30 14:57:15,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 188 transitions, 1009 flow [2023-08-30 14:57:15,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:57:15,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:57:15,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4287 transitions. [2023-08-30 14:57:15,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4183255269320843 [2023-08-30 14:57:15,989 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4287 transitions. [2023-08-30 14:57:15,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4287 transitions. [2023-08-30 14:57:15,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:15,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4287 transitions. [2023-08-30 14:57:15,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 612.4285714285714) internal successors, (4287), 7 states have internal predecessors, (4287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:16,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1464.0) internal successors, (11712), 8 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:16,003 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1464.0) internal successors, (11712), 8 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:16,003 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 222 flow. Second operand 7 states and 4287 transitions. [2023-08-30 14:57:16,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 188 transitions, 1009 flow [2023-08-30 14:57:16,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 188 transitions, 1008 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:57:16,006 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 332 flow [2023-08-30 14:57:16,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2023-08-30 14:57:16,007 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2023-08-30 14:57:16,007 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 332 flow [2023-08-30 14:57:16,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 589.2857142857143) internal successors, (4125), 7 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:16,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:16,008 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:57:16,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 14:57:16,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:57:16,220 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:16,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:16,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1822098487, now seen corresponding path program 1 times [2023-08-30 14:57:16,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:16,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740971645] [2023-08-30 14:57:16,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:16,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:57:16,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:16,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740971645] [2023-08-30 14:57:16,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740971645] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:57:16,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:57:16,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:57:16,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286550362] [2023-08-30 14:57:16,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:57:16,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:57:16,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:16,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:57:16,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:57:16,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-08-30 14:57:16,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 590.6666666666666) internal successors, (1772), 3 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:16,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:16,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-08-30 14:57:16,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:16,763 INFO L130 PetriNetUnfolder]: 1569/2448 cut-off events. [2023-08-30 14:57:16,763 INFO L131 PetriNetUnfolder]: For 1898/1898 co-relation queries the response was YES. [2023-08-30 14:57:16,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7283 conditions, 2448 events. 1569/2448 cut-off events. For 1898/1898 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10501 event pairs, 1157 based on Foata normal form. 0/2004 useless extension candidates. Maximal degree in co-relation 7258. Up to 2448 conditions per place. [2023-08-30 14:57:16,776 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 14:57:16,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 56 transitions, 390 flow [2023-08-30 14:57:16,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:57:16,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:57:16,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1801 transitions. [2023-08-30 14:57:16,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41006375227686703 [2023-08-30 14:57:16,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1801 transitions. [2023-08-30 14:57:16,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1801 transitions. [2023-08-30 14:57:16,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:16,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1801 transitions. [2023-08-30 14:57:16,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 600.3333333333334) internal successors, (1801), 3 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:16,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:16,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:16,787 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 332 flow. Second operand 3 states and 1801 transitions. [2023-08-30 14:57:16,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 56 transitions, 390 flow [2023-08-30 14:57:16,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 56 transitions, 376 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:57:16,791 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 266 flow [2023-08-30 14:57:16,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2023-08-30 14:57:16,791 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -2 predicate places. [2023-08-30 14:57:16,791 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 266 flow [2023-08-30 14:57:16,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 590.6666666666666) internal successors, (1772), 3 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:16,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:16,792 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:57:16,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 14:57:16,792 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:16,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:16,793 INFO L85 PathProgramCache]: Analyzing trace with hash -650475523, now seen corresponding path program 1 times [2023-08-30 14:57:16,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:16,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338570581] [2023-08-30 14:57:16,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:16,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:57:16,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:16,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338570581] [2023-08-30 14:57:16,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338570581] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:57:16,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211561323] [2023-08-30 14:57:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:16,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:57:16,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:57:16,909 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:57:16,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 14:57:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:17,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:57:17,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:57:17,133 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:57:17,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:57:17,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211561323] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:57:17,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:57:17,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-30 14:57:17,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337762872] [2023-08-30 14:57:17,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:57:17,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:57:17,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:17,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:57:17,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:57:17,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-08-30 14:57:17,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 266 flow. Second operand has 5 states, 5 states have (on average 589.4) internal successors, (2947), 5 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:17,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:17,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-08-30 14:57:17,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:17,794 INFO L130 PetriNetUnfolder]: 1337/2216 cut-off events. [2023-08-30 14:57:17,794 INFO L131 PetriNetUnfolder]: For 524/524 co-relation queries the response was YES. [2023-08-30 14:57:17,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5951 conditions, 2216 events. 1337/2216 cut-off events. For 524/524 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 10755 event pairs, 161 based on Foata normal form. 116/2004 useless extension candidates. Maximal degree in co-relation 5924. Up to 1250 conditions per place. [2023-08-30 14:57:17,803 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 123 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2023-08-30 14:57:17,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 126 transitions, 714 flow [2023-08-30 14:57:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:57:17,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:57:17,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3047 transitions. [2023-08-30 14:57:17,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4162568306010929 [2023-08-30 14:57:17,808 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3047 transitions. [2023-08-30 14:57:17,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3047 transitions. [2023-08-30 14:57:17,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:17,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3047 transitions. [2023-08-30 14:57:17,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 609.4) internal successors, (3047), 5 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:17,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1464.0) internal successors, (8784), 6 states have internal predecessors, (8784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:17,817 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1464.0) internal successors, (8784), 6 states have internal predecessors, (8784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:17,817 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 266 flow. Second operand 5 states and 3047 transitions. [2023-08-30 14:57:17,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 126 transitions, 714 flow [2023-08-30 14:57:17,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 126 transitions, 713 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:57:17,823 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 250 flow [2023-08-30 14:57:17,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2023-08-30 14:57:17,823 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -1 predicate places. [2023-08-30 14:57:17,823 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 250 flow [2023-08-30 14:57:17,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 589.4) internal successors, (2947), 5 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:17,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:17,824 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:57:17,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 14:57:18,030 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,SelfDestructingSolverStorable17 [2023-08-30 14:57:18,031 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:18,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:18,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1958361601, now seen corresponding path program 1 times [2023-08-30 14:57:18,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:18,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428596510] [2023-08-30 14:57:18,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:18,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-08-30 14:57:18,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:18,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428596510] [2023-08-30 14:57:18,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428596510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:57:18,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:57:18,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:57:18,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977788002] [2023-08-30 14:57:18,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:57:18,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:57:18,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:18,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:57:18,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:57:18,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-08-30 14:57:18,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 596.6666666666666) internal successors, (1790), 3 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:18,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:18,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-08-30 14:57:18,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:18,651 INFO L130 PetriNetUnfolder]: 1205/1998 cut-off events. [2023-08-30 14:57:18,651 INFO L131 PetriNetUnfolder]: For 1591/1591 co-relation queries the response was YES. [2023-08-30 14:57:18,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5370 conditions, 1998 events. 1205/1998 cut-off events. For 1591/1591 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 9034 event pairs, 1035 based on Foata normal form. 0/1774 useless extension candidates. Maximal degree in co-relation 5343. Up to 1998 conditions per place. [2023-08-30 14:57:18,658 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 49 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-08-30 14:57:18,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 50 transitions, 336 flow [2023-08-30 14:57:18,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:57:18,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:57:18,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1816 transitions. [2023-08-30 14:57:18,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134790528233151 [2023-08-30 14:57:18,662 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1816 transitions. [2023-08-30 14:57:18,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1816 transitions. [2023-08-30 14:57:18,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:18,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1816 transitions. [2023-08-30 14:57:18,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:18,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:18,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:18,667 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 250 flow. Second operand 3 states and 1816 transitions. [2023-08-30 14:57:18,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 50 transitions, 336 flow [2023-08-30 14:57:18,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 50 transitions, 331 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 14:57:18,671 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 233 flow [2023-08-30 14:57:18,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2023-08-30 14:57:18,671 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -4 predicate places. [2023-08-30 14:57:18,671 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 233 flow [2023-08-30 14:57:18,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 596.6666666666666) internal successors, (1790), 3 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:18,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:18,672 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:57:18,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 14:57:18,672 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:18,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:18,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1958361660, now seen corresponding path program 2 times [2023-08-30 14:57:18,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:18,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225421907] [2023-08-30 14:57:18,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:18,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:19,063 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:57:19,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:19,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225421907] [2023-08-30 14:57:19,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225421907] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:57:19,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258301872] [2023-08-30 14:57:19,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:57:19,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:57:19,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:57:19,065 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:57:19,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 14:57:19,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:57:19,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:57:19,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:57:19,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:57:19,314 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-08-30 14:57:19,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:57:19,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258301872] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:57:19,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:57:19,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-30 14:57:19,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481256411] [2023-08-30 14:57:19,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:57:19,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:57:19,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:19,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:57:19,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:57:19,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 593 out of 1464 [2023-08-30 14:57:19,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 596.6666666666666) internal successors, (1790), 3 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:19,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:19,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 593 of 1464 [2023-08-30 14:57:19,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:19,649 INFO L130 PetriNetUnfolder]: 1079/1790 cut-off events. [2023-08-30 14:57:19,650 INFO L131 PetriNetUnfolder]: For 1083/1083 co-relation queries the response was YES. [2023-08-30 14:57:19,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4548 conditions, 1790 events. 1079/1790 cut-off events. For 1083/1083 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7853 event pairs, 919 based on Foata normal form. 80/1662 useless extension candidates. Maximal degree in co-relation 4520. Up to 1790 conditions per place. [2023-08-30 14:57:19,656 INFO L137 encePairwiseOnDemand]: 1461/1464 looper letters, 43 selfloop transitions, 1 changer transitions 4/48 dead transitions. [2023-08-30 14:57:19,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 48 transitions, 315 flow [2023-08-30 14:57:19,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:57:19,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:57:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1814 transitions. [2023-08-30 14:57:19,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41302367941712204 [2023-08-30 14:57:19,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1814 transitions. [2023-08-30 14:57:19,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1814 transitions. [2023-08-30 14:57:19,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:19,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1814 transitions. [2023-08-30 14:57:19,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 604.6666666666666) internal successors, (1814), 3 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:19,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:19,662 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:19,662 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 233 flow. Second operand 3 states and 1814 transitions. [2023-08-30 14:57:19,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 48 transitions, 315 flow [2023-08-30 14:57:19,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 48 transitions, 304 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 14:57:19,665 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 201 flow [2023-08-30 14:57:19,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2023-08-30 14:57:19,665 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -9 predicate places. [2023-08-30 14:57:19,665 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 201 flow [2023-08-30 14:57:19,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 596.6666666666666) internal successors, (1790), 3 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:19,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:19,666 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:57:19,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 14:57:19,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:57:19,872 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:19,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:19,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1247540455, now seen corresponding path program 1 times [2023-08-30 14:57:19,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:19,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622145324] [2023-08-30 14:57:19,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:19,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:19,936 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:57:19,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:19,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622145324] [2023-08-30 14:57:19,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622145324] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:57:19,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:57:19,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:57:19,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030605561] [2023-08-30 14:57:19,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:57:19,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:57:19,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:19,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:57:19,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:57:19,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-08-30 14:57:19,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 201 flow. Second operand has 3 states, 3 states have (on average 593.3333333333334) internal successors, (1780), 3 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:19,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:19,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-08-30 14:57:19,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:20,314 INFO L130 PetriNetUnfolder]: 891/1476 cut-off events. [2023-08-30 14:57:20,314 INFO L131 PetriNetUnfolder]: For 243/243 co-relation queries the response was YES. [2023-08-30 14:57:20,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3548 conditions, 1476 events. 891/1476 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6167 event pairs, 767 based on Foata normal form. 0/1346 useless extension candidates. Maximal degree in co-relation 3523. Up to 1476 conditions per place. [2023-08-30 14:57:20,322 INFO L137 encePairwiseOnDemand]: 1462/1464 looper letters, 42 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-30 14:57:20,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 43 transitions, 283 flow [2023-08-30 14:57:20,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:57:20,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:57:20,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1790 transitions. [2023-08-30 14:57:20,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075591985428051 [2023-08-30 14:57:20,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1790 transitions. [2023-08-30 14:57:20,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1790 transitions. [2023-08-30 14:57:20,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:20,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1790 transitions. [2023-08-30 14:57:20,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 596.6666666666666) internal successors, (1790), 3 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:20,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:20,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1464.0) internal successors, (5856), 4 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:20,333 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 201 flow. Second operand 3 states and 1790 transitions. [2023-08-30 14:57:20,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 43 transitions, 283 flow [2023-08-30 14:57:20,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 43 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:57:20,334 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 198 flow [2023-08-30 14:57:20,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2023-08-30 14:57:20,335 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2023-08-30 14:57:20,335 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 198 flow [2023-08-30 14:57:20,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 593.3333333333334) internal successors, (1780), 3 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:20,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:20,336 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:57:20,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 14:57:20,336 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:20,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:20,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1247540062, now seen corresponding path program 1 times [2023-08-30 14:57:20,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:20,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847599267] [2023-08-30 14:57:20,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:20,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:57:20,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:20,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847599267] [2023-08-30 14:57:20,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847599267] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:57:20,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657858815] [2023-08-30 14:57:20,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:20,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:57:20,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:57:20,453 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:57:20,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 14:57:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:20,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:57:20,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:57:20,717 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:57:20,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:57:20,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657858815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:57:20,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:57:20,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 14:57:20,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612238982] [2023-08-30 14:57:20,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:57:20,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:57:20,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:20,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:57:20,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:57:20,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 587 out of 1464 [2023-08-30 14:57:20,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 591.75) internal successors, (2367), 4 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:20,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:20,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 587 of 1464 [2023-08-30 14:57:20,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:21,043 INFO L130 PetriNetUnfolder]: 777/1284 cut-off events. [2023-08-30 14:57:21,044 INFO L131 PetriNetUnfolder]: For 252/252 co-relation queries the response was YES. [2023-08-30 14:57:21,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3042 conditions, 1284 events. 777/1284 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5099 event pairs, 11 based on Foata normal form. 26/1232 useless extension candidates. Maximal degree in co-relation 3016. Up to 692 conditions per place. [2023-08-30 14:57:21,048 INFO L137 encePairwiseOnDemand]: 1459/1464 looper letters, 68 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-30 14:57:21,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 414 flow [2023-08-30 14:57:21,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:57:21,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:57:21,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2399 transitions. [2023-08-30 14:57:21,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40966530054644806 [2023-08-30 14:57:21,051 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2399 transitions. [2023-08-30 14:57:21,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2399 transitions. [2023-08-30 14:57:21,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:21,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2399 transitions. [2023-08-30 14:57:21,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 599.75) internal successors, (2399), 4 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:21,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1464.0) internal successors, (7320), 5 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:21,060 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1464.0) internal successors, (7320), 5 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:21,060 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 198 flow. Second operand 4 states and 2399 transitions. [2023-08-30 14:57:21,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 414 flow [2023-08-30 14:57:21,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 70 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:57:21,063 INFO L231 Difference]: Finished difference. Result has 57 places, 40 transitions, 189 flow [2023-08-30 14:57:21,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=57, PETRI_TRANSITIONS=40} [2023-08-30 14:57:21,063 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -13 predicate places. [2023-08-30 14:57:21,063 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 40 transitions, 189 flow [2023-08-30 14:57:21,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 591.75) internal successors, (2367), 4 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:21,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:57:21,064 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:57:21,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 14:57:21,270 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,SelfDestructingSolverStorable21 [2023-08-30 14:57:21,270 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2023-08-30 14:57:21,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:57:21,271 INFO L85 PathProgramCache]: Analyzing trace with hash 19061962, now seen corresponding path program 1 times [2023-08-30 14:57:21,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:57:21,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832514222] [2023-08-30 14:57:21,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:21,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:57:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:57:21,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:57:21,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832514222] [2023-08-30 14:57:21,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832514222] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:57:21,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121035005] [2023-08-30 14:57:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:57:21,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:57:21,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:57:21,354 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:57:21,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 14:57:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:57:21,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:57:21,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:57:21,620 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:57:21,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:57:21,646 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 14:57:21,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121035005] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:57:21,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:57:21,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:57:21,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010857371] [2023-08-30 14:57:21,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:57:21,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:57:21,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:57:21,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:57:21,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:57:21,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 586 out of 1464 [2023-08-30 14:57:21,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 40 transitions, 189 flow. Second operand has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:21,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:57:21,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 586 of 1464 [2023-08-30 14:57:21,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:57:22,174 INFO L130 PetriNetUnfolder]: 1069/1758 cut-off events. [2023-08-30 14:57:22,175 INFO L131 PetriNetUnfolder]: For 413/413 co-relation queries the response was YES. [2023-08-30 14:57:22,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4121 conditions, 1758 events. 1069/1758 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6975 event pairs, 11 based on Foata normal form. 52/1732 useless extension candidates. Maximal degree in co-relation 4095. Up to 564 conditions per place. [2023-08-30 14:57:22,181 INFO L137 encePairwiseOnDemand]: 1459/1464 looper letters, 0 selfloop transitions, 0 changer transitions 100/100 dead transitions. [2023-08-30 14:57:22,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 100 transitions, 563 flow [2023-08-30 14:57:22,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:57:22,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:57:22,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3590 transitions. [2023-08-30 14:57:22,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4086976320582878 [2023-08-30 14:57:22,188 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3590 transitions. [2023-08-30 14:57:22,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3590 transitions. [2023-08-30 14:57:22,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:57:22,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3590 transitions. [2023-08-30 14:57:22,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 598.3333333333334) internal successors, (3590), 6 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:22,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1464.0) internal successors, (10248), 7 states have internal predecessors, (10248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:22,198 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1464.0) internal successors, (10248), 7 states have internal predecessors, (10248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:22,198 INFO L175 Difference]: Start difference. First operand has 57 places, 40 transitions, 189 flow. Second operand 6 states and 3590 transitions. [2023-08-30 14:57:22,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 100 transitions, 563 flow [2023-08-30 14:57:22,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 100 transitions, 560 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:57:22,200 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-08-30 14:57:22,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1464, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-08-30 14:57:22,201 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2023-08-30 14:57:22,201 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-08-30 14:57:22,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:57:22,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (79 of 80 remaining) [2023-08-30 14:57:22,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (78 of 80 remaining) [2023-08-30 14:57:22,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (77 of 80 remaining) [2023-08-30 14:57:22,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (76 of 80 remaining) [2023-08-30 14:57:22,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (75 of 80 remaining) [2023-08-30 14:57:22,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (74 of 80 remaining) [2023-08-30 14:57:22,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (73 of 80 remaining) [2023-08-30 14:57:22,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (72 of 80 remaining) [2023-08-30 14:57:22,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (71 of 80 remaining) [2023-08-30 14:57:22,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (70 of 80 remaining) [2023-08-30 14:57:22,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (69 of 80 remaining) [2023-08-30 14:57:22,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (68 of 80 remaining) [2023-08-30 14:57:22,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (67 of 80 remaining) [2023-08-30 14:57:22,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (66 of 80 remaining) [2023-08-30 14:57:22,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (65 of 80 remaining) [2023-08-30 14:57:22,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (64 of 80 remaining) [2023-08-30 14:57:22,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (63 of 80 remaining) [2023-08-30 14:57:22,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (62 of 80 remaining) [2023-08-30 14:57:22,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (61 of 80 remaining) [2023-08-30 14:57:22,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (60 of 80 remaining) [2023-08-30 14:57:22,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 80 remaining) [2023-08-30 14:57:22,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 80 remaining) [2023-08-30 14:57:22,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 80 remaining) [2023-08-30 14:57:22,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 80 remaining) [2023-08-30 14:57:22,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 80 remaining) [2023-08-30 14:57:22,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 80 remaining) [2023-08-30 14:57:22,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 80 remaining) [2023-08-30 14:57:22,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 80 remaining) [2023-08-30 14:57:22,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 80 remaining) [2023-08-30 14:57:22,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 80 remaining) [2023-08-30 14:57:22,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 80 remaining) [2023-08-30 14:57:22,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 80 remaining) [2023-08-30 14:57:22,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 80 remaining) [2023-08-30 14:57:22,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 80 remaining) [2023-08-30 14:57:22,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 80 remaining) [2023-08-30 14:57:22,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 80 remaining) [2023-08-30 14:57:22,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 80 remaining) [2023-08-30 14:57:22,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 80 remaining) [2023-08-30 14:57:22,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 80 remaining) [2023-08-30 14:57:22,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 80 remaining) [2023-08-30 14:57:22,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 80 remaining) [2023-08-30 14:57:22,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 80 remaining) [2023-08-30 14:57:22,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 80 remaining) [2023-08-30 14:57:22,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 80 remaining) [2023-08-30 14:57:22,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 80 remaining) [2023-08-30 14:57:22,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 80 remaining) [2023-08-30 14:57:22,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 80 remaining) [2023-08-30 14:57:22,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 80 remaining) [2023-08-30 14:57:22,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 80 remaining) [2023-08-30 14:57:22,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 80 remaining) [2023-08-30 14:57:22,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 80 remaining) [2023-08-30 14:57:22,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 80 remaining) [2023-08-30 14:57:22,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 80 remaining) [2023-08-30 14:57:22,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 80 remaining) [2023-08-30 14:57:22,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 80 remaining) [2023-08-30 14:57:22,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 80 remaining) [2023-08-30 14:57:22,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 80 remaining) [2023-08-30 14:57:22,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 80 remaining) [2023-08-30 14:57:22,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 80 remaining) [2023-08-30 14:57:22,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 80 remaining) [2023-08-30 14:57:22,212 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 80 remaining) [2023-08-30 14:57:22,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 80 remaining) [2023-08-30 14:57:22,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 80 remaining) [2023-08-30 14:57:22,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 80 remaining) [2023-08-30 14:57:22,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 80 remaining) [2023-08-30 14:57:22,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 80 remaining) [2023-08-30 14:57:22,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 80 remaining) [2023-08-30 14:57:22,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 80 remaining) [2023-08-30 14:57:22,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 80 remaining) [2023-08-30 14:57:22,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 80 remaining) [2023-08-30 14:57:22,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 80 remaining) [2023-08-30 14:57:22,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 80 remaining) [2023-08-30 14:57:22,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 80 remaining) [2023-08-30 14:57:22,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 80 remaining) [2023-08-30 14:57:22,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 80 remaining) [2023-08-30 14:57:22,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 80 remaining) [2023-08-30 14:57:22,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 80 remaining) [2023-08-30 14:57:22,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 80 remaining) [2023-08-30 14:57:22,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 80 remaining) [2023-08-30 14:57:22,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 80 remaining) [2023-08-30 14:57:22,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 14:57:22,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-30 14:57:22,422 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:57:22,426 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 14:57:22,426 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 14:57:22,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 02:57:22 BasicIcfg [2023-08-30 14:57:22,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 14:57:22,430 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 14:57:22,430 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 14:57:22,431 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 14:57:22,431 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:56:16" (3/4) ... [2023-08-30 14:57:22,433 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 14:57:22,436 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 14:57:22,436 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 14:57:22,440 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-08-30 14:57:22,441 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 14:57:22,441 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 14:57:22,441 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 14:57:22,477 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 14:57:22,477 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 14:57:22,478 INFO L158 Benchmark]: Toolchain (without parser) took 67916.71ms. Allocated memory was 73.4MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 44.3MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 446.9MB. Max. memory is 16.1GB. [2023-08-30 14:57:22,478 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 73.4MB. Free memory is still 50.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 14:57:22,479 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.26ms. Allocated memory is still 73.4MB. Free memory was 44.1MB in the beginning and 50.3MB in the end (delta: -6.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 14:57:22,479 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.20ms. Allocated memory is still 73.4MB. Free memory was 50.3MB in the beginning and 46.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 14:57:22,479 INFO L158 Benchmark]: Boogie Preprocessor took 73.07ms. Allocated memory is still 73.4MB. Free memory was 46.6MB in the beginning and 44.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 14:57:22,479 INFO L158 Benchmark]: RCFGBuilder took 978.96ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 44.0MB in the beginning and 70.2MB in the end (delta: -26.2MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2023-08-30 14:57:22,480 INFO L158 Benchmark]: TraceAbstraction took 66407.15ms. Allocated memory was 94.4MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 69.7MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-08-30 14:57:22,480 INFO L158 Benchmark]: Witness Printer took 47.28ms. Allocated memory is still 1.9GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 14:57:22,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 73.4MB. Free memory is still 50.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.26ms. Allocated memory is still 73.4MB. Free memory was 44.1MB in the beginning and 50.3MB in the end (delta: -6.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.20ms. Allocated memory is still 73.4MB. Free memory was 50.3MB in the beginning and 46.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.07ms. Allocated memory is still 73.4MB. Free memory was 46.6MB in the beginning and 44.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 978.96ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 44.0MB in the beginning and 70.2MB in the end (delta: -26.2MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. * TraceAbstraction took 66407.15ms. Allocated memory was 94.4MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 69.7MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 47.28ms. Allocated memory is still 1.9GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 42.2s, 557 PlacesBefore, 70 PlacesAfterwards, 610 TransitionsBefore, 70 TransitionsAfterwards, 105228 CoEnabledTransitionPairs, 9 FixpointIterations, 148 TrivialSequentialCompositions, 484 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 132 ConcurrentYvCompositions, 53 ChoiceCompositions, 837 TotalNumberOfCompositions, 103824 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 100807, independent: 100630, independent conditional: 0, independent unconditional: 100630, dependent: 177, dependent conditional: 0, dependent unconditional: 177, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 61900, independent: 61870, independent conditional: 0, independent unconditional: 61870, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 100807, independent: 38760, independent conditional: 0, independent unconditional: 38760, dependent: 147, dependent conditional: 0, dependent unconditional: 147, unknown: 61900, unknown conditional: 0, unknown unconditional: 61900] , Statistics on independence cache: Total cache size (in pairs): 380, Positive cache size: 367, Positive conditional cache size: 0, Positive unconditional cache size: 367, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 127]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 127]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 963 locations, 80 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 66.2s, OverallIterations: 23, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 16.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 42.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2306 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1772 mSDsluCounter, 136 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 221 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3817 IncrementalHoareTripleChecker+Invalid, 4038 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 221 mSolverCounterUnsat, 136 mSDtfsCounter, 3817 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 278 GetRequests, 201 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=332occurred in iteration=16, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 505 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 536 ConstructedInterpolants, 0 QuantifiedInterpolants, 1268 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2192 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 39 InterpolantComputations, 18 PerfectInterpolantSequences, 745/841 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 42 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 14:57:22,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE