./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i --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/goblint-regression/28-race_reach_21-deref_read_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c --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 14:10:05,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:10:05,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:10:05,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:10:05,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:10:05,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:10:05,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:10:05,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:10:05,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:10:05,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:10:05,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:10:05,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:10:05,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:10:05,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:10:05,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:10:05,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:10:05,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:10:05,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:10:05,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:10:05,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:10:05,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:10:05,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:10:05,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:10:05,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:10:05,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:10:05,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:10:05,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:10:05,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:10:05,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:10:05,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:10:05,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:10:05,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:10:05,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:10:05,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:10:05,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:10:05,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:10:05,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:10:05,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:10:05,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:10:05,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:10:05,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:10:05,858 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:10:05,882 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:10:05,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:10:05,883 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:10:05,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:10:05,884 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:10:05,884 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:10:05,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:10:05,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:10:05,885 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:10:05,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:10:05,886 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:10:05,886 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:10:05,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:10:05,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:10:05,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:10:05,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:10:05,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:10:05,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:10:05,887 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:10:05,887 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:10:05,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:10:05,887 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:10:05,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:10:05,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:10:05,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:10:05,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:10:05,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:10:05,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:10:05,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:10:05,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:10:05,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:10:05,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:10:05,889 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:10:05,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:10:05,889 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:10:05,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:10:05,889 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:10:05,890 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:10:06,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:10:06,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:10:06,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:10:06,182 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:10:06,182 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:10:06,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-08-30 14:10:07,220 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:10:07,474 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:10:07,474 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-08-30 14:10:07,483 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26bbb6526/77a4bedc71ee45d2bf499cd961043e4d/FLAG56225efb2 [2023-08-30 14:10:07,494 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26bbb6526/77a4bedc71ee45d2bf499cd961043e4d [2023-08-30 14:10:07,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:10:07,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:10:07,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:10:07,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:10:07,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:10:07,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:10:07" (1/1) ... [2023-08-30 14:10:07,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e4197e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:07, skipping insertion in model container [2023-08-30 14:10:07,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:10:07" (1/1) ... [2023-08-30 14:10:07,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:10:07,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:10:07,749 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i[30176,30189] [2023-08-30 14:10:07,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:10:07,770 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:10:07,801 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i[30176,30189] [2023-08-30 14:10:07,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:10:07,840 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:10:07,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:07 WrapperNode [2023-08-30 14:10:07,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:10:07,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:10:07,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:10:07,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:10:07,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:07" (1/1) ... [2023-08-30 14:10:07,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:07" (1/1) ... [2023-08-30 14:10:07,889 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2023-08-30 14:10:07,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:10:07,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:10:07,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:10:07,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:10:07,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:07" (1/1) ... [2023-08-30 14:10:07,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:07" (1/1) ... [2023-08-30 14:10:07,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:07" (1/1) ... [2023-08-30 14:10:07,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:07" (1/1) ... [2023-08-30 14:10:07,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:07" (1/1) ... [2023-08-30 14:10:07,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:07" (1/1) ... [2023-08-30 14:10:07,919 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:07" (1/1) ... [2023-08-30 14:10:07,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:07" (1/1) ... [2023-08-30 14:10:07,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:10:07,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:10:07,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:10:07,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:10:07,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:07" (1/1) ... [2023-08-30 14:10:07,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:10:07,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:10:07,946 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 14:10:07,954 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 14:10:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:10:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:10:07,973 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:10:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:10:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:10:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 14:10:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 14:10:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:10:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:10:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:10:07,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:10:07,975 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 14:10:08,089 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:10:08,091 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:10:08,283 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:10:08,288 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:10:08,288 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-30 14:10:08,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:10:08 BoogieIcfgContainer [2023-08-30 14:10:08,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:10:08,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:10:08,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:10:08,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:10:08,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:10:07" (1/3) ... [2023-08-30 14:10:08,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c73a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:10:08, skipping insertion in model container [2023-08-30 14:10:08,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:10:07" (2/3) ... [2023-08-30 14:10:08,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c73a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:10:08, skipping insertion in model container [2023-08-30 14:10:08,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:10:08" (3/3) ... [2023-08-30 14:10:08,296 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_21-deref_read_racing.i [2023-08-30 14:10:08,301 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:10:08,306 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:10:08,307 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 14:10:08,307 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:10:08,368 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 14:10:08,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 108 transitions, 221 flow [2023-08-30 14:10:08,466 INFO L130 PetriNetUnfolder]: 14/135 cut-off events. [2023-08-30 14:10:08,467 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:10:08,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 14/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 310 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-08-30 14:10:08,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 108 transitions, 221 flow [2023-08-30 14:10:08,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 108 transitions, 221 flow [2023-08-30 14:10:08,478 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:10:08,490 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 108 transitions, 221 flow [2023-08-30 14:10:08,492 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 108 transitions, 221 flow [2023-08-30 14:10:08,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 108 transitions, 221 flow [2023-08-30 14:10:08,529 INFO L130 PetriNetUnfolder]: 14/135 cut-off events. [2023-08-30 14:10:08,529 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:10:08,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 14/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 310 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2023-08-30 14:10:08,532 INFO L119 LiptonReduction]: Number of co-enabled transitions 2960 [2023-08-30 14:10:11,017 INFO L134 LiptonReduction]: Checked pairs total: 5503 [2023-08-30 14:10:11,017 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-30 14:10:11,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:10:11,031 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;@546199e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:10:11,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-30 14:10:11,033 INFO L130 PetriNetUnfolder]: 2/9 cut-off events. [2023-08-30 14:10:11,033 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:10:11,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:11,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:10:11,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-30 14:10:11,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:11,038 INFO L85 PathProgramCache]: Analyzing trace with hash 13231113, now seen corresponding path program 1 times [2023-08-30 14:10:11,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:11,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87953908] [2023-08-30 14:10:11,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:11,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:11,229 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 14:10:11,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:11,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87953908] [2023-08-30 14:10:11,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87953908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:11,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:10:11,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:10:11,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681067004] [2023-08-30 14:10:11,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:11,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:10:11,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:11,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:10:11,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:10:11,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 209 [2023-08-30 14:10:11,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 34 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:11,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:11,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 209 [2023-08-30 14:10:11,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:11,346 INFO L130 PetriNetUnfolder]: 78/194 cut-off events. [2023-08-30 14:10:11,347 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:10:11,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 194 events. 78/194 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 878 event pairs, 0 based on Foata normal form. 14/166 useless extension candidates. Maximal degree in co-relation 352. Up to 163 conditions per place. [2023-08-30 14:10:11,349 INFO L137 encePairwiseOnDemand]: 196/209 looper letters, 33 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-08-30 14:10:11,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 38 transitions, 151 flow [2023-08-30 14:10:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:10:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:10:11,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-08-30 14:10:11,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231259968102073 [2023-08-30 14:10:11,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-08-30 14:10:11,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-08-30 14:10:11,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:11,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-08-30 14:10:11,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:11,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:11,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:11,377 INFO L175 Difference]: Start difference. First operand has 29 places, 34 transitions, 73 flow. Second operand 3 states and 328 transitions. [2023-08-30 14:10:11,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 38 transitions, 151 flow [2023-08-30 14:10:11,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 151 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:10:11,379 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 61 flow [2023-08-30 14:10:11,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-08-30 14:10:11,383 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2023-08-30 14:10:11,383 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 61 flow [2023-08-30 14:10:11,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:11,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:11,384 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 14:10:11,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:10:11,385 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-30 14:10:11,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:11,393 INFO L85 PathProgramCache]: Analyzing trace with hash -169772391, now seen corresponding path program 1 times [2023-08-30 14:10:11,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:11,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080946424] [2023-08-30 14:10:11,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:11,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:10:11,438 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:10:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:10:11,471 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:10:11,472 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:10:11,473 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-08-30 14:10:11,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-08-30 14:10:11,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-08-30 14:10:11,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-08-30 14:10:11,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-08-30 14:10:11,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-08-30 14:10:11,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2023-08-30 14:10:11,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-08-30 14:10:11,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-08-30 14:10:11,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-08-30 14:10:11,480 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-08-30 14:10:11,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:10:11,480 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 14:10:11,483 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:10:11,483 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 14:10:11,512 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 14:10:11,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 149 transitions, 310 flow [2023-08-30 14:10:11,533 INFO L130 PetriNetUnfolder]: 24/212 cut-off events. [2023-08-30 14:10:11,533 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:10:11,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 212 events. 24/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 601 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 136. Up to 6 conditions per place. [2023-08-30 14:10:11,536 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 149 transitions, 310 flow [2023-08-30 14:10:11,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 149 transitions, 310 flow [2023-08-30 14:10:11,537 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:10:11,537 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 149 transitions, 310 flow [2023-08-30 14:10:11,538 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 149 transitions, 310 flow [2023-08-30 14:10:11,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 149 transitions, 310 flow [2023-08-30 14:10:11,553 INFO L130 PetriNetUnfolder]: 24/212 cut-off events. [2023-08-30 14:10:11,553 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:10:11,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 212 events. 24/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 601 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 136. Up to 6 conditions per place. [2023-08-30 14:10:11,558 INFO L119 LiptonReduction]: Number of co-enabled transitions 9200 [2023-08-30 14:10:13,910 INFO L134 LiptonReduction]: Checked pairs total: 19943 [2023-08-30 14:10:13,911 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-08-30 14:10:13,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:10:13,918 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;@546199e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:10:13,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-30 14:10:13,921 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2023-08-30 14:10:13,921 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:10:13,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:13,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:10:13,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-30 14:10:13,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:13,922 INFO L85 PathProgramCache]: Analyzing trace with hash 719081544, now seen corresponding path program 1 times [2023-08-30 14:10:13,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:13,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246902724] [2023-08-30 14:10:13,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:13,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:13,975 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 14:10:13,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:13,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246902724] [2023-08-30 14:10:13,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246902724] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:13,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:10:13,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:10:13,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913355972] [2023-08-30 14:10:13,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:13,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:10:13,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:13,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:10:13,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:10:13,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 283 [2023-08-30 14:10:13,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 57 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:13,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:13,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 283 [2023-08-30 14:10:13,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:14,369 INFO L130 PetriNetUnfolder]: 3148/5083 cut-off events. [2023-08-30 14:10:14,371 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-08-30 14:10:14,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10134 conditions, 5083 events. 3148/5083 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 32725 event pairs, 2996 based on Foata normal form. 543/3987 useless extension candidates. Maximal degree in co-relation 6624. Up to 4982 conditions per place. [2023-08-30 14:10:14,398 INFO L137 encePairwiseOnDemand]: 264/283 looper letters, 49 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-30 14:10:14,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 228 flow [2023-08-30 14:10:14,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:10:14,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:10:14,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-08-30 14:10:14,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5323910482921084 [2023-08-30 14:10:14,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-08-30 14:10:14,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-08-30 14:10:14,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:14,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-08-30 14:10:14,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:14,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:14,405 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:14,405 INFO L175 Difference]: Start difference. First operand has 48 places, 57 transitions, 126 flow. Second operand 3 states and 452 transitions. [2023-08-30 14:10:14,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 228 flow [2023-08-30 14:10:14,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 226 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 14:10:14,407 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 112 flow [2023-08-30 14:10:14,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-08-30 14:10:14,407 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2023-08-30 14:10:14,408 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 112 flow [2023-08-30 14:10:14,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:14,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:14,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:10:14,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:10:14,411 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-30 14:10:14,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:14,412 INFO L85 PathProgramCache]: Analyzing trace with hash -445808798, now seen corresponding path program 1 times [2023-08-30 14:10:14,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:14,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658813436] [2023-08-30 14:10:14,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:14,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:14,615 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 14:10:14,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:14,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658813436] [2023-08-30 14:10:14,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658813436] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:14,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:10:14,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:10:14,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137460534] [2023-08-30 14:10:14,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:14,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:10:14,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:14,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:10:14,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:10:14,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 283 [2023-08-30 14:10:14,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:14,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:14,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 283 [2023-08-30 14:10:14,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:14,999 INFO L130 PetriNetUnfolder]: 2828/4572 cut-off events. [2023-08-30 14:10:14,999 INFO L131 PetriNetUnfolder]: For 403/403 co-relation queries the response was YES. [2023-08-30 14:10:15,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9858 conditions, 4572 events. 2828/4572 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 28593 event pairs, 1097 based on Foata normal form. 0/3389 useless extension candidates. Maximal degree in co-relation 9775. Up to 4214 conditions per place. [2023-08-30 14:10:15,015 INFO L137 encePairwiseOnDemand]: 275/283 looper letters, 56 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-08-30 14:10:15,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 300 flow [2023-08-30 14:10:15,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:10:15,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:10:15,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 552 transitions. [2023-08-30 14:10:15,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876325088339223 [2023-08-30 14:10:15,017 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 552 transitions. [2023-08-30 14:10:15,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 552 transitions. [2023-08-30 14:10:15,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:15,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 552 transitions. [2023-08-30 14:10:15,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:15,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:15,021 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:15,021 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 112 flow. Second operand 4 states and 552 transitions. [2023-08-30 14:10:15,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 300 flow [2023-08-30 14:10:15,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 68 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:10:15,023 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 161 flow [2023-08-30 14:10:15,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2023-08-30 14:10:15,024 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2023-08-30 14:10:15,024 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 161 flow [2023-08-30 14:10:15,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:15,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:15,024 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:10:15,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:10:15,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-30 14:10:15,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:15,025 INFO L85 PathProgramCache]: Analyzing trace with hash -874252022, now seen corresponding path program 1 times [2023-08-30 14:10:15,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:15,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032459606] [2023-08-30 14:10:15,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:15,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:10:15,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:15,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032459606] [2023-08-30 14:10:15,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032459606] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:10:15,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296379895] [2023-08-30 14:10:15,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:15,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:10:15,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:10:15,073 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 14:10:15,115 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 14:10:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:15,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:10:15,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:10:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:10:15,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:10:15,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296379895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:15,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:10:15,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:10:15,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147254025] [2023-08-30 14:10:15,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:15,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:10:15,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:15,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:10:15,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:10:15,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 283 [2023-08-30 14:10:15,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:15,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:15,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 283 [2023-08-30 14:10:15,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:15,565 INFO L130 PetriNetUnfolder]: 2502/4056 cut-off events. [2023-08-30 14:10:15,566 INFO L131 PetriNetUnfolder]: For 1068/1068 co-relation queries the response was YES. [2023-08-30 14:10:15,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9663 conditions, 4056 events. 2502/4056 cut-off events. For 1068/1068 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 24716 event pairs, 2138 based on Foata normal form. 0/3278 useless extension candidates. Maximal degree in co-relation 6833. Up to 3984 conditions per place. [2023-08-30 14:10:15,585 INFO L137 encePairwiseOnDemand]: 280/283 looper letters, 51 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-30 14:10:15,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 288 flow [2023-08-30 14:10:15,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:10:15,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:10:15,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 553 transitions. [2023-08-30 14:10:15,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48851590106007065 [2023-08-30 14:10:15,588 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 553 transitions. [2023-08-30 14:10:15,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 553 transitions. [2023-08-30 14:10:15,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:15,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 553 transitions. [2023-08-30 14:10:15,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.25) internal successors, (553), 4 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:15,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:15,592 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 283.0) internal successors, (1415), 5 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:15,592 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 161 flow. Second operand 4 states and 553 transitions. [2023-08-30 14:10:15,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 288 flow [2023-08-30 14:10:15,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 288 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:10:15,596 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 161 flow [2023-08-30 14:10:15,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2023-08-30 14:10:15,598 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2023-08-30 14:10:15,598 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 161 flow [2023-08-30 14:10:15,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:15,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:15,599 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:10:15,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 14:10:15,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:10:15,803 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-30 14:10:15,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:15,804 INFO L85 PathProgramCache]: Analyzing trace with hash -874251996, now seen corresponding path program 1 times [2023-08-30 14:10:15,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:15,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627055359] [2023-08-30 14:10:15,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:15,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:10:15,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:15,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627055359] [2023-08-30 14:10:15,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627055359] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:15,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:10:15,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:10:15,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509762044] [2023-08-30 14:10:15,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:15,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:10:15,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:15,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:10:15,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:10:15,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 283 [2023-08-30 14:10:15,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:15,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:15,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 283 [2023-08-30 14:10:15,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:16,086 INFO L130 PetriNetUnfolder]: 2176/3524 cut-off events. [2023-08-30 14:10:16,087 INFO L131 PetriNetUnfolder]: For 721/721 co-relation queries the response was YES. [2023-08-30 14:10:16,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8365 conditions, 3524 events. 2176/3524 cut-off events. For 721/721 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 21564 event pairs, 552 based on Foata normal form. 0/2996 useless extension candidates. Maximal degree in co-relation 6218. Up to 2621 conditions per place. [2023-08-30 14:10:16,099 INFO L137 encePairwiseOnDemand]: 279/283 looper letters, 66 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2023-08-30 14:10:16,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 76 transitions, 381 flow [2023-08-30 14:10:16,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:10:16,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:10:16,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-08-30 14:10:16,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159010600706714 [2023-08-30 14:10:16,100 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-08-30 14:10:16,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-08-30 14:10:16,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:16,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-08-30 14:10:16,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:16,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:16,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:16,103 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 161 flow. Second operand 3 states and 438 transitions. [2023-08-30 14:10:16,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 76 transitions, 381 flow [2023-08-30 14:10:16,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 76 transitions, 378 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:10:16,105 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 170 flow [2023-08-30 14:10:16,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=283, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2023-08-30 14:10:16,106 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2023-08-30 14:10:16,106 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 170 flow [2023-08-30 14:10:16,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:16,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:16,107 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 14:10:16,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:10:16,107 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-30 14:10:16,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:16,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1657461850, now seen corresponding path program 1 times [2023-08-30 14:10:16,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:16,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022929278] [2023-08-30 14:10:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:16,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:10:16,125 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:10:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:10:16,140 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:10:16,140 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:10:16,141 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-08-30 14:10:16,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2023-08-30 14:10:16,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2023-08-30 14:10:16,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2023-08-30 14:10:16,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2023-08-30 14:10:16,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2023-08-30 14:10:16,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2023-08-30 14:10:16,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2023-08-30 14:10:16,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2023-08-30 14:10:16,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2023-08-30 14:10:16,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2023-08-30 14:10:16,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2023-08-30 14:10:16,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2023-08-30 14:10:16,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2023-08-30 14:10:16,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2023-08-30 14:10:16,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:10:16,142 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 14:10:16,142 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:10:16,142 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 14:10:16,163 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 14:10:16,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 190 transitions, 401 flow [2023-08-30 14:10:16,192 INFO L130 PetriNetUnfolder]: 34/289 cut-off events. [2023-08-30 14:10:16,192 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 14:10:16,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 289 events. 34/289 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 898 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 216. Up to 8 conditions per place. [2023-08-30 14:10:16,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 190 transitions, 401 flow [2023-08-30 14:10:16,197 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 190 transitions, 401 flow [2023-08-30 14:10:16,197 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:10:16,197 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 190 transitions, 401 flow [2023-08-30 14:10:16,197 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 190 transitions, 401 flow [2023-08-30 14:10:16,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 190 transitions, 401 flow [2023-08-30 14:10:16,216 INFO L130 PetriNetUnfolder]: 34/289 cut-off events. [2023-08-30 14:10:16,216 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 14:10:16,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 289 events. 34/289 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 898 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 216. Up to 8 conditions per place. [2023-08-30 14:10:16,235 INFO L119 LiptonReduction]: Number of co-enabled transitions 18720 [2023-08-30 14:10:18,846 INFO L134 LiptonReduction]: Checked pairs total: 48975 [2023-08-30 14:10:18,846 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-08-30 14:10:18,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:10:18,848 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;@546199e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:10:18,848 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-30 14:10:18,850 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2023-08-30 14:10:18,852 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:10:18,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:18,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:10:18,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 14:10:18,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:18,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1094510464, now seen corresponding path program 1 times [2023-08-30 14:10:18,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:18,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736983541] [2023-08-30 14:10:18,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:18,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:18,872 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 14:10:18,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:18,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736983541] [2023-08-30 14:10:18,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736983541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:18,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:10:18,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:10:18,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132566340] [2023-08-30 14:10:18,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:18,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:10:18,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:18,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:10:18,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:10:18,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 352 [2023-08-30 14:10:18,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 79 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:18,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:18,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 352 [2023-08-30 14:10:18,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:23,755 INFO L130 PetriNetUnfolder]: 69040/97048 cut-off events. [2023-08-30 14:10:23,756 INFO L131 PetriNetUnfolder]: For 1261/1261 co-relation queries the response was YES. [2023-08-30 14:10:23,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193449 conditions, 97048 events. 69040/97048 cut-off events. For 1261/1261 co-relation queries the response was YES. Maximal size of possible extension queue 3581. Compared 721756 event pairs, 44668 based on Foata normal form. 11244/77089 useless extension candidates. Maximal degree in co-relation 18881. Up to 95444 conditions per place. [2023-08-30 14:10:24,241 INFO L137 encePairwiseOnDemand]: 327/352 looper letters, 63 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-30 14:10:24,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 73 transitions, 297 flow [2023-08-30 14:10:24,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:10:24,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:10:24,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 574 transitions. [2023-08-30 14:10:24,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5435606060606061 [2023-08-30 14:10:24,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 574 transitions. [2023-08-30 14:10:24,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 574 transitions. [2023-08-30 14:10:24,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:24,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 574 transitions. [2023-08-30 14:10:24,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:24,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:24,247 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:24,247 INFO L175 Difference]: Start difference. First operand has 66 places, 79 transitions, 179 flow. Second operand 3 states and 574 transitions. [2023-08-30 14:10:24,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 73 transitions, 297 flow [2023-08-30 14:10:24,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 73 transitions, 291 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-30 14:10:24,252 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 149 flow [2023-08-30 14:10:24,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2023-08-30 14:10:24,253 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-08-30 14:10:24,254 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 149 flow [2023-08-30 14:10:24,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:24,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:24,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:10:24,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:10:24,254 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 14:10:24,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:24,255 INFO L85 PathProgramCache]: Analyzing trace with hash -434256585, now seen corresponding path program 1 times [2023-08-30 14:10:24,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:24,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985203312] [2023-08-30 14:10:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:24,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:24,320 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 14:10:24,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:24,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985203312] [2023-08-30 14:10:24,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985203312] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:24,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:10:24,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:10:24,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687488417] [2023-08-30 14:10:24,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:24,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:10:24,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:24,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:10:24,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:10:24,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 352 [2023-08-30 14:10:24,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:24,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:24,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 352 [2023-08-30 14:10:24,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:28,859 INFO L130 PetriNetUnfolder]: 65738/91393 cut-off events. [2023-08-30 14:10:28,859 INFO L131 PetriNetUnfolder]: For 6151/6151 co-relation queries the response was YES. [2023-08-30 14:10:29,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194135 conditions, 91393 events. 65738/91393 cut-off events. For 6151/6151 co-relation queries the response was YES. Maximal size of possible extension queue 3686. Compared 661554 event pairs, 32321 based on Foata normal form. 0/65281 useless extension candidates. Maximal degree in co-relation 194051. Up to 89693 conditions per place. [2023-08-30 14:10:29,274 INFO L137 encePairwiseOnDemand]: 341/352 looper letters, 75 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2023-08-30 14:10:29,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 398 flow [2023-08-30 14:10:29,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:10:29,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:10:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 705 transitions. [2023-08-30 14:10:29,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5007102272727273 [2023-08-30 14:10:29,276 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 705 transitions. [2023-08-30 14:10:29,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 705 transitions. [2023-08-30 14:10:29,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:29,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 705 transitions. [2023-08-30 14:10:29,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:29,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 352.0) internal successors, (1760), 5 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:29,279 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 352.0) internal successors, (1760), 5 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:29,279 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 149 flow. Second operand 4 states and 705 transitions. [2023-08-30 14:10:29,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 398 flow [2023-08-30 14:10:29,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 91 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:10:29,285 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 218 flow [2023-08-30 14:10:29,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2023-08-30 14:10:29,286 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2023-08-30 14:10:29,286 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 218 flow [2023-08-30 14:10:29,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:29,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:29,287 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:10:29,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:10:29,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 14:10:29,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:29,287 INFO L85 PathProgramCache]: Analyzing trace with hash 107311737, now seen corresponding path program 1 times [2023-08-30 14:10:29,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:29,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359913468] [2023-08-30 14:10:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:29,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:29,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:10:29,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:29,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359913468] [2023-08-30 14:10:29,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359913468] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:10:29,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154248237] [2023-08-30 14:10:29,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:29,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:10:29,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:10:29,331 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 14:10:29,333 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 14:10:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:29,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:10:29,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:10:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:10:29,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:10:29,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154248237] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:29,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:10:29,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 14:10:29,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934575202] [2023-08-30 14:10:29,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:29,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:10:29,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:29,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:10:29,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:10:29,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 352 [2023-08-30 14:10:29,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:29,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:29,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 352 [2023-08-30 14:10:29,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:33,710 INFO L130 PetriNetUnfolder]: 58151/81167 cut-off events. [2023-08-30 14:10:33,710 INFO L131 PetriNetUnfolder]: For 24304/24783 co-relation queries the response was YES. [2023-08-30 14:10:33,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195000 conditions, 81167 events. 58151/81167 cut-off events. For 24304/24783 co-relation queries the response was YES. Maximal size of possible extension queue 3181. Compared 578746 event pairs, 51871 based on Foata normal form. 0/64020 useless extension candidates. Maximal degree in co-relation 135614. Up to 80561 conditions per place. [2023-08-30 14:10:34,072 INFO L137 encePairwiseOnDemand]: 349/352 looper letters, 67 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-30 14:10:34,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 77 transitions, 377 flow [2023-08-30 14:10:34,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:10:34,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:10:34,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 703 transitions. [2023-08-30 14:10:34,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4992897727272727 [2023-08-30 14:10:34,074 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 703 transitions. [2023-08-30 14:10:34,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 703 transitions. [2023-08-30 14:10:34,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:34,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 703 transitions. [2023-08-30 14:10:34,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:34,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 352.0) internal successors, (1760), 5 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:34,076 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 352.0) internal successors, (1760), 5 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:34,077 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 218 flow. Second operand 4 states and 703 transitions. [2023-08-30 14:10:34,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 77 transitions, 377 flow [2023-08-30 14:10:34,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 377 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:10:34,097 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 218 flow [2023-08-30 14:10:34,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2023-08-30 14:10:34,098 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 9 predicate places. [2023-08-30 14:10:34,098 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 218 flow [2023-08-30 14:10:34,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:34,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:34,098 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-30 14:10:34,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 14:10:34,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 14:10:34,303 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 14:10:34,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:34,303 INFO L85 PathProgramCache]: Analyzing trace with hash 107311775, now seen corresponding path program 1 times [2023-08-30 14:10:34,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:34,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616063711] [2023-08-30 14:10:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:34,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:10:34,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:34,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616063711] [2023-08-30 14:10:34,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616063711] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:34,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:10:34,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:10:34,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088704998] [2023-08-30 14:10:34,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:34,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:10:34,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:34,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:10:34,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:10:34,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 352 [2023-08-30 14:10:34,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:34,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:34,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 352 [2023-08-30 14:10:34,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:38,180 INFO L130 PetriNetUnfolder]: 50564/70401 cut-off events. [2023-08-30 14:10:38,180 INFO L131 PetriNetUnfolder]: For 20015/20255 co-relation queries the response was YES. [2023-08-30 14:10:38,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168408 conditions, 70401 events. 50564/70401 cut-off events. For 20015/20255 co-relation queries the response was YES. Maximal size of possible extension queue 2735. Compared 490217 event pairs, 18616 based on Foata normal form. 2/58021 useless extension candidates. Maximal degree in co-relation 163269. Up to 52006 conditions per place. [2023-08-30 14:10:38,519 INFO L137 encePairwiseOnDemand]: 348/352 looper letters, 96 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2023-08-30 14:10:38,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 108 transitions, 539 flow [2023-08-30 14:10:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:10:38,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:10:38,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 567 transitions. [2023-08-30 14:10:38,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5369318181818182 [2023-08-30 14:10:38,521 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 567 transitions. [2023-08-30 14:10:38,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 567 transitions. [2023-08-30 14:10:38,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:38,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 567 transitions. [2023-08-30 14:10:38,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:38,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:38,524 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:38,524 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 218 flow. Second operand 3 states and 567 transitions. [2023-08-30 14:10:38,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 108 transitions, 539 flow [2023-08-30 14:10:38,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 108 transitions, 536 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:10:38,546 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 227 flow [2023-08-30 14:10:38,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2023-08-30 14:10:38,546 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 9 predicate places. [2023-08-30 14:10:38,546 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 227 flow [2023-08-30 14:10:38,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:38,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:38,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:10:38,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 14:10:38,547 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 14:10:38,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:38,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1785684688, now seen corresponding path program 1 times [2023-08-30 14:10:38,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:38,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078659983] [2023-08-30 14:10:38,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:38,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:38,643 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 14:10:38,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:38,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078659983] [2023-08-30 14:10:38,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078659983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:38,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:10:38,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 14:10:38,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492936435] [2023-08-30 14:10:38,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:38,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:10:38,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:38,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:10:38,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:10:38,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 352 [2023-08-30 14:10:38,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 227 flow. Second operand has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:38,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:38,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 352 [2023-08-30 14:10:38,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:45,045 INFO L130 PetriNetUnfolder]: 72990/105320 cut-off events. [2023-08-30 14:10:45,045 INFO L131 PetriNetUnfolder]: For 57476/57520 co-relation queries the response was YES. [2023-08-30 14:10:45,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259792 conditions, 105320 events. 72990/105320 cut-off events. For 57476/57520 co-relation queries the response was YES. Maximal size of possible extension queue 4082. Compared 803745 event pairs, 17068 based on Foata normal form. 26/90134 useless extension candidates. Maximal degree in co-relation 259695. Up to 64111 conditions per place. [2023-08-30 14:10:45,586 INFO L137 encePairwiseOnDemand]: 330/352 looper letters, 172 selfloop transitions, 39 changer transitions 0/219 dead transitions. [2023-08-30 14:10:45,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 219 transitions, 1139 flow [2023-08-30 14:10:45,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 14:10:45,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 14:10:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1575 transitions. [2023-08-30 14:10:45,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4971590909090909 [2023-08-30 14:10:45,590 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1575 transitions. [2023-08-30 14:10:45,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1575 transitions. [2023-08-30 14:10:45,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:45,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1575 transitions. [2023-08-30 14:10:45,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 175.0) internal successors, (1575), 9 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:45,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:45,618 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 352.0) internal successors, (3520), 10 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:45,618 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 227 flow. Second operand 9 states and 1575 transitions. [2023-08-30 14:10:45,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 219 transitions, 1139 flow [2023-08-30 14:10:45,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 219 transitions, 1122 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:10:45,679 INFO L231 Difference]: Finished difference. Result has 88 places, 97 transitions, 553 flow [2023-08-30 14:10:45,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=553, PETRI_PLACES=88, PETRI_TRANSITIONS=97} [2023-08-30 14:10:45,680 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 22 predicate places. [2023-08-30 14:10:45,681 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 97 transitions, 553 flow [2023-08-30 14:10:45,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:45,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:45,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:10:45,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 14:10:45,681 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 14:10:45,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:45,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1785684731, now seen corresponding path program 1 times [2023-08-30 14:10:45,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:45,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821348859] [2023-08-30 14:10:45,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:45,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:45,724 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 14:10:45,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:45,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821348859] [2023-08-30 14:10:45,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821348859] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:45,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:10:45,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:10:45,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257447501] [2023-08-30 14:10:45,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:45,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:10:45,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:45,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:10:45,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:10:45,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 352 [2023-08-30 14:10:45,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 97 transitions, 553 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:45,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:45,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 352 [2023-08-30 14:10:45,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:10:54,347 INFO L130 PetriNetUnfolder]: 81949/122706 cut-off events. [2023-08-30 14:10:54,348 INFO L131 PetriNetUnfolder]: For 190315/193775 co-relation queries the response was YES. [2023-08-30 14:10:54,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374835 conditions, 122706 events. 81949/122706 cut-off events. For 190315/193775 co-relation queries the response was YES. Maximal size of possible extension queue 4783. Compared 1021294 event pairs, 29887 based on Foata normal form. 6603/128464 useless extension candidates. Maximal degree in co-relation 374733. Up to 80987 conditions per place. [2023-08-30 14:10:55,144 INFO L137 encePairwiseOnDemand]: 335/352 looper letters, 112 selfloop transitions, 39 changer transitions 0/159 dead transitions. [2023-08-30 14:10:55,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 159 transitions, 1194 flow [2023-08-30 14:10:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:10:55,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:10:55,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2023-08-30 14:10:55,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2023-08-30 14:10:55,146 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2023-08-30 14:10:55,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2023-08-30 14:10:55,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:10:55,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2023-08-30 14:10:55,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:55,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:55,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:55,149 INFO L175 Difference]: Start difference. First operand has 88 places, 97 transitions, 553 flow. Second operand 3 states and 564 transitions. [2023-08-30 14:10:55,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 159 transitions, 1194 flow [2023-08-30 14:10:55,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 159 transitions, 1159 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-30 14:10:55,424 INFO L231 Difference]: Finished difference. Result has 90 places, 122 transitions, 916 flow [2023-08-30 14:10:55,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=916, PETRI_PLACES=90, PETRI_TRANSITIONS=122} [2023-08-30 14:10:55,425 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2023-08-30 14:10:55,425 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 122 transitions, 916 flow [2023-08-30 14:10:55,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:55,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:10:55,425 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:10:55,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 14:10:55,426 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 14:10:55,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:10:55,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1827506, now seen corresponding path program 1 times [2023-08-30 14:10:55,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:10:55,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706316357] [2023-08-30 14:10:55,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:55,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:10:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:55,538 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 14:10:55,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:10:55,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706316357] [2023-08-30 14:10:55,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706316357] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:10:55,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065851674] [2023-08-30 14:10:55,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:10:55,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:10:55,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:10:55,540 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 14:10:55,568 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 14:10:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:10:55,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 14:10:55,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:10:55,655 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:10:55,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:10:55,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:10:55,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 14:10:56,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:10:56,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:10:56,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:10:56,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065851674] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:10:56,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:10:56,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-30 14:10:56,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70147367] [2023-08-30 14:10:56,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:10:56,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:10:56,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:10:56,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:10:56,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 14:10:56,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 352 [2023-08-30 14:10:56,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 122 transitions, 916 flow. Second operand has 6 states, 6 states have (on average 152.66666666666666) internal successors, (916), 6 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:10:56,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:10:56,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 352 [2023-08-30 14:10:56,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:04,734 INFO L130 PetriNetUnfolder]: 79994/118660 cut-off events. [2023-08-30 14:11:04,735 INFO L131 PetriNetUnfolder]: For 288693/289708 co-relation queries the response was YES. [2023-08-30 14:11:05,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406346 conditions, 118660 events. 79994/118660 cut-off events. For 288693/289708 co-relation queries the response was YES. Maximal size of possible extension queue 4683. Compared 963062 event pairs, 30738 based on Foata normal form. 510/118739 useless extension candidates. Maximal degree in co-relation 406236. Up to 110040 conditions per place. [2023-08-30 14:11:05,546 INFO L137 encePairwiseOnDemand]: 342/352 looper letters, 168 selfloop transitions, 28 changer transitions 0/204 dead transitions. [2023-08-30 14:11:05,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 204 transitions, 1799 flow [2023-08-30 14:11:05,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:11:05,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:11:05,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1028 transitions. [2023-08-30 14:11:05,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48674242424242425 [2023-08-30 14:11:05,549 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1028 transitions. [2023-08-30 14:11:05,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1028 transitions. [2023-08-30 14:11:05,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:05,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1028 transitions. [2023-08-30 14:11:05,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 171.33333333333334) internal successors, (1028), 6 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:05,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:05,553 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 352.0) internal successors, (2464), 7 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:05,553 INFO L175 Difference]: Start difference. First operand has 90 places, 122 transitions, 916 flow. Second operand 6 states and 1028 transitions. [2023-08-30 14:11:05,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 204 transitions, 1799 flow [2023-08-30 14:11:05,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 204 transitions, 1695 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:11:05,974 INFO L231 Difference]: Finished difference. Result has 95 places, 141 transitions, 1099 flow [2023-08-30 14:11:05,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1099, PETRI_PLACES=95, PETRI_TRANSITIONS=141} [2023-08-30 14:11:05,975 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 29 predicate places. [2023-08-30 14:11:05,975 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 141 transitions, 1099 flow [2023-08-30 14:11:05,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.66666666666666) internal successors, (916), 6 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:05,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:05,976 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:11:05,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 14:11:06,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:11:06,180 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 14:11:06,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:06,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1827463, now seen corresponding path program 1 times [2023-08-30 14:11:06,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:06,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856689204] [2023-08-30 14:11:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:06,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:06,320 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 14:11:06,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:06,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856689204] [2023-08-30 14:11:06,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856689204] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:11:06,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920947673] [2023-08-30 14:11:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:06,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:11:06,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:11:06,322 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 14:11:06,324 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 14:11:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:06,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 14:11:06,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:11:06,550 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:11:06,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:11:06,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 14:11:06,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:11:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:11:06,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:11:06,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920947673] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:06,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:11:06,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2023-08-30 14:11:06,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003823426] [2023-08-30 14:11:06,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:06,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:11:06,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:06,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:11:06,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 14:11:06,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 352 [2023-08-30 14:11:06,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 141 transitions, 1099 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:06,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:06,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 352 [2023-08-30 14:11:06,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:11:15,003 INFO L130 PetriNetUnfolder]: 75654/112077 cut-off events. [2023-08-30 14:11:15,003 INFO L131 PetriNetUnfolder]: For 278706/282220 co-relation queries the response was YES. [2023-08-30 14:11:15,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381583 conditions, 112077 events. 75654/112077 cut-off events. For 278706/282220 co-relation queries the response was YES. Maximal size of possible extension queue 4220. Compared 904035 event pairs, 41843 based on Foata normal form. 1443/112978 useless extension candidates. Maximal degree in co-relation 381469. Up to 78302 conditions per place. [2023-08-30 14:11:15,980 INFO L137 encePairwiseOnDemand]: 338/352 looper letters, 259 selfloop transitions, 32 changer transitions 0/299 dead transitions. [2023-08-30 14:11:15,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 299 transitions, 2772 flow [2023-08-30 14:11:15,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:11:15,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:11:15,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 913 transitions. [2023-08-30 14:11:15,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51875 [2023-08-30 14:11:15,983 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 913 transitions. [2023-08-30 14:11:15,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 913 transitions. [2023-08-30 14:11:15,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:11:15,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 913 transitions. [2023-08-30 14:11:15,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:15,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:15,987 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:15,987 INFO L175 Difference]: Start difference. First operand has 95 places, 141 transitions, 1099 flow. Second operand 5 states and 913 transitions. [2023-08-30 14:11:15,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 299 transitions, 2772 flow [2023-08-30 14:11:16,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 299 transitions, 2750 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-30 14:11:16,340 INFO L231 Difference]: Finished difference. Result has 99 places, 157 transitions, 1387 flow [2023-08-30 14:11:16,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1387, PETRI_PLACES=99, PETRI_TRANSITIONS=157} [2023-08-30 14:11:16,341 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 33 predicate places. [2023-08-30 14:11:16,341 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 157 transitions, 1387 flow [2023-08-30 14:11:16,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:16,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:16,342 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 14:11:16,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 14:11:16,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 14:11:16,545 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 14:11:16,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:16,546 INFO L85 PathProgramCache]: Analyzing trace with hash -638924160, now seen corresponding path program 1 times [2023-08-30 14:11:16,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:16,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508986537] [2023-08-30 14:11:16,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:16,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:11:16,559 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 14:11:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 14:11:16,576 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 14:11:16,576 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 14:11:16,577 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-08-30 14:11:16,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-30 14:11:16,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-30 14:11:16,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-30 14:11:16,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-30 14:11:16,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-30 14:11:16,577 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-30 14:11:16,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-30 14:11:16,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-08-30 14:11:16,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-08-30 14:11:16,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-08-30 14:11:16,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-30 14:11:16,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-30 14:11:16,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-30 14:11:16,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-30 14:11:16,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-30 14:11:16,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-30 14:11:16,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-30 14:11:16,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-30 14:11:16,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:11:16,580 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:11:16,582 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 14:11:16,582 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 14:11:16,600 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 14:11:16,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 231 transitions, 494 flow [2023-08-30 14:11:16,628 INFO L130 PetriNetUnfolder]: 44/366 cut-off events. [2023-08-30 14:11:16,628 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 14:11:16,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 366 events. 44/366 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1169 event pairs, 0 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 297. Up to 10 conditions per place. [2023-08-30 14:11:16,631 INFO L82 GeneralOperation]: Start removeDead. Operand has 212 places, 231 transitions, 494 flow [2023-08-30 14:11:16,633 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 231 transitions, 494 flow [2023-08-30 14:11:16,633 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:11:16,634 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 231 transitions, 494 flow [2023-08-30 14:11:16,634 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 231 transitions, 494 flow [2023-08-30 14:11:16,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 231 transitions, 494 flow [2023-08-30 14:11:16,657 INFO L130 PetriNetUnfolder]: 44/366 cut-off events. [2023-08-30 14:11:16,657 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 14:11:16,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 366 events. 44/366 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1169 event pairs, 0 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 297. Up to 10 conditions per place. [2023-08-30 14:11:16,671 INFO L119 LiptonReduction]: Number of co-enabled transitions 31520 [2023-08-30 14:11:19,563 INFO L134 LiptonReduction]: Checked pairs total: 73624 [2023-08-30 14:11:19,564 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-08-30 14:11:19,564 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:11:19,565 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;@546199e7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:11:19,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-30 14:11:19,566 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2023-08-30 14:11:19,566 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:11:19,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:11:19,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:11:19,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-30 14:11:19,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:11:19,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1535697042, now seen corresponding path program 1 times [2023-08-30 14:11:19,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:11:19,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152447183] [2023-08-30 14:11:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:11:19,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:11:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:11:19,585 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 14:11:19,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:11:19,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152447183] [2023-08-30 14:11:19,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152447183] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:11:19,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:11:19,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:11:19,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068751876] [2023-08-30 14:11:19,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:11:19,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:11:19,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:11:19,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:11:19,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:11:19,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 422 [2023-08-30 14:11:19,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 101 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:11:19,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:11:19,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 422 [2023-08-30 14:11:19,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand