./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_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_86-lists_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 db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a --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 14:28:00,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:28:00,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:28:00,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:28:00,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:28:00,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:28:00,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:28:00,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:28:00,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:28:00,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:28:00,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:28:00,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:28:00,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:28:00,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:28:00,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:28:00,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:28:00,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:28:00,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:28:00,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:28:00,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:28:00,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:28:00,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:28:00,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:28:00,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:28:00,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:28:00,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:28:00,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:28:00,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:28:00,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:28:00,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:28:00,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:28:00,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:28:00,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:28:00,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:28:00,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:28:00,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:28:00,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:28:00,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:28:00,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:28:00,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:28:00,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:28:00,916 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:28:00,931 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:28:00,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:28:00,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:28:00,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:28:00,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:28:00,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:28:00,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:28:00,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:28:00,933 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:28:00,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:28:00,934 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:28:00,934 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:28:00,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:28:00,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:28:00,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:28:00,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:28:00,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:28:00,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:28:00,935 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:28:00,935 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:28:00,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:28:00,935 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:28:00,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:28:00,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:28:00,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:28:00,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:28:00,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:28:00,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:28:00,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:28:00,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:28:00,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:28:00,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:28:00,937 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:28:00,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:28:00,937 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:28:00,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:28:00,938 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:28:00,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:28:01,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:28:01,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:28:01,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:28:01,206 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:28:01,207 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:28:01,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-08-30 14:28:02,120 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:28:02,348 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:28:02,348 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-08-30 14:28:02,369 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcc26b7d7/529e9d7f14b4415384bc265f593a3cdf/FLAGc09fa2be0 [2023-08-30 14:28:02,381 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcc26b7d7/529e9d7f14b4415384bc265f593a3cdf [2023-08-30 14:28:02,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:28:02,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:28:02,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:28:02,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:28:02,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:28:02,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:28:02" (1/1) ... [2023-08-30 14:28:02,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33e12bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:02, skipping insertion in model container [2023-08-30 14:28:02,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:28:02" (1/1) ... [2023-08-30 14:28:02,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:28:02,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:28:02,785 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_86-lists_racing.i[47038,47051] [2023-08-30 14:28:02,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:28:02,890 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:28:02,932 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_86-lists_racing.i[47038,47051] [2023-08-30 14:28:02,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:28:02,999 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:28:02,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:02 WrapperNode [2023-08-30 14:28:02,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:28:03,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:28:03,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:28:03,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:28:03,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:02" (1/1) ... [2023-08-30 14:28:03,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:02" (1/1) ... [2023-08-30 14:28:03,039 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 246 [2023-08-30 14:28:03,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:28:03,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:28:03,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:28:03,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:28:03,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:02" (1/1) ... [2023-08-30 14:28:03,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:02" (1/1) ... [2023-08-30 14:28:03,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:02" (1/1) ... [2023-08-30 14:28:03,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:02" (1/1) ... [2023-08-30 14:28:03,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:02" (1/1) ... [2023-08-30 14:28:03,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:02" (1/1) ... [2023-08-30 14:28:03,072 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:02" (1/1) ... [2023-08-30 14:28:03,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:02" (1/1) ... [2023-08-30 14:28:03,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:28:03,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:28:03,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:28:03,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:28:03,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:02" (1/1) ... [2023-08-30 14:28:03,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:28:03,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:28:03,107 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 14:28:03,130 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 14:28:03,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:28:03,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 14:28:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-30 14:28:03,144 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-30 14:28:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:28:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:28:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-30 14:28:03,144 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-30 14:28:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:28:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 14:28:03,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:28:03,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:28:03,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 14:28:03,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:28:03,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:28:03,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:28:03,148 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 14:28:03,290 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:28:03,293 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:28:03,624 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:28:03,630 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:28:03,631 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-30 14:28:03,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:28:03 BoogieIcfgContainer [2023-08-30 14:28:03,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:28:03,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:28:03,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:28:03,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:28:03,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:28:02" (1/3) ... [2023-08-30 14:28:03,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4f22da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:28:03, skipping insertion in model container [2023-08-30 14:28:03,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:28:02" (2/3) ... [2023-08-30 14:28:03,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4f22da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:28:03, skipping insertion in model container [2023-08-30 14:28:03,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:28:03" (3/3) ... [2023-08-30 14:28:03,637 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2023-08-30 14:28:03,643 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:28:03,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:28:03,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 14:28:03,654 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:28:03,765 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 14:28:03,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 260 transitions, 542 flow [2023-08-30 14:28:03,936 INFO L130 PetriNetUnfolder]: 54/489 cut-off events. [2023-08-30 14:28:03,936 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-30 14:28:03,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 489 events. 54/489 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2024 event pairs, 0 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 231. Up to 8 conditions per place. [2023-08-30 14:28:03,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 240 places, 260 transitions, 542 flow [2023-08-30 14:28:03,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 240 places, 260 transitions, 542 flow [2023-08-30 14:28:03,957 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:28:03,966 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 240 places, 260 transitions, 542 flow [2023-08-30 14:28:03,968 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 240 places, 260 transitions, 542 flow [2023-08-30 14:28:03,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 260 transitions, 542 flow [2023-08-30 14:28:04,013 INFO L130 PetriNetUnfolder]: 54/489 cut-off events. [2023-08-30 14:28:04,014 INFO L131 PetriNetUnfolder]: For 8/16 co-relation queries the response was YES. [2023-08-30 14:28:04,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 489 events. 54/489 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2024 event pairs, 0 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 231. Up to 8 conditions per place. [2023-08-30 14:28:04,037 INFO L119 LiptonReduction]: Number of co-enabled transitions 20860 [2023-08-30 14:28:10,109 INFO L134 LiptonReduction]: Checked pairs total: 35025 [2023-08-30 14:28:10,110 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-08-30 14:28:10,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:28:10,128 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;@65219d0b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:28:10,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 14:28:10,133 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 14:28:10,133 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:28:10,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:28:10,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:28:10,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 14:28:10,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:28:10,137 INFO L85 PathProgramCache]: Analyzing trace with hash 32602, now seen corresponding path program 1 times [2023-08-30 14:28:10,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:28:10,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054606964] [2023-08-30 14:28:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:10,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:28:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:10,363 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 14:28:10,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:28:10,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054606964] [2023-08-30 14:28:10,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054606964] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:28:10,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:28:10,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:28:10,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167881825] [2023-08-30 14:28:10,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:28:10,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:28:10,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:28:10,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:28:10,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:28:10,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 488 [2023-08-30 14:28:10,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 82 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:10,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:28:10,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 488 [2023-08-30 14:28:10,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:28:11,060 INFO L130 PetriNetUnfolder]: 4997/8227 cut-off events. [2023-08-30 14:28:11,060 INFO L131 PetriNetUnfolder]: For 149/149 co-relation queries the response was YES. [2023-08-30 14:28:11,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16184 conditions, 8227 events. 4997/8227 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 48585 event pairs, 4694 based on Foata normal form. 232/6341 useless extension candidates. Maximal degree in co-relation 14315. Up to 7855 conditions per place. [2023-08-30 14:28:11,091 INFO L137 encePairwiseOnDemand]: 472/488 looper letters, 62 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-30 14:28:11,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 292 flow [2023-08-30 14:28:11,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:28:11,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:28:11,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 775 transitions. [2023-08-30 14:28:11,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5293715846994536 [2023-08-30 14:28:11,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 775 transitions. [2023-08-30 14:28:11,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 775 transitions. [2023-08-30 14:28:11,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:28:11,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 775 transitions. [2023-08-30 14:28:11,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 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 14:28:11,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 488.0) internal successors, (1952), 4 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:11,113 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 488.0) internal successors, (1952), 4 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:11,114 INFO L175 Difference]: Start difference. First operand has 69 places, 82 transitions, 186 flow. Second operand 3 states and 775 transitions. [2023-08-30 14:28:11,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 292 flow [2023-08-30 14:28:11,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:28:11,120 INFO L231 Difference]: Finished difference. Result has 71 places, 71 transitions, 176 flow [2023-08-30 14:28:11,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=71, PETRI_TRANSITIONS=71} [2023-08-30 14:28:11,124 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 2 predicate places. [2023-08-30 14:28:11,124 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 176 flow [2023-08-30 14:28:11,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:11,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:28:11,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:28:11,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:28:11,125 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 14:28:11,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:28:11,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1011737, now seen corresponding path program 1 times [2023-08-30 14:28:11,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:28:11,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832842013] [2023-08-30 14:28:11,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:11,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:28:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:11,228 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 14:28:11,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:28:11,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832842013] [2023-08-30 14:28:11,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832842013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:28:11,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:28:11,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:28:11,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100624637] [2023-08-30 14:28:11,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:28:11,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:28:11,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:28:11,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:28:11,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:28:11,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 488 [2023-08-30 14:28:11,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 71 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:11,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:28:11,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 488 [2023-08-30 14:28:11,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:28:11,827 INFO L130 PetriNetUnfolder]: 4997/8226 cut-off events. [2023-08-30 14:28:11,827 INFO L131 PetriNetUnfolder]: For 149/149 co-relation queries the response was YES. [2023-08-30 14:28:11,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16189 conditions, 8226 events. 4997/8226 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 48600 event pairs, 4694 based on Foata normal form. 0/6109 useless extension candidates. Maximal degree in co-relation 16176. Up to 7854 conditions per place. [2023-08-30 14:28:11,858 INFO L137 encePairwiseOnDemand]: 486/488 looper letters, 62 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-08-30 14:28:11,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 70 transitions, 298 flow [2023-08-30 14:28:11,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:28:11,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:28:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 759 transitions. [2023-08-30 14:28:11,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184426229508197 [2023-08-30 14:28:11,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 759 transitions. [2023-08-30 14:28:11,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 759 transitions. [2023-08-30 14:28:11,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:28:11,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 759 transitions. [2023-08-30 14:28:11,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:11,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 488.0) internal successors, (1952), 4 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:11,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 488.0) internal successors, (1952), 4 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:11,865 INFO L175 Difference]: Start difference. First operand has 71 places, 71 transitions, 176 flow. Second operand 3 states and 759 transitions. [2023-08-30 14:28:11,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 70 transitions, 298 flow [2023-08-30 14:28:11,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 294 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 14:28:11,868 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 170 flow [2023-08-30 14:28:11,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2023-08-30 14:28:11,869 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 2 predicate places. [2023-08-30 14:28:11,869 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 170 flow [2023-08-30 14:28:11,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:11,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:28:11,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:28:11,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:28:11,870 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 14:28:11,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:28:11,871 INFO L85 PathProgramCache]: Analyzing trace with hash 75492271, now seen corresponding path program 1 times [2023-08-30 14:28:11,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:28:11,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787061115] [2023-08-30 14:28:11,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:11,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:28:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:11,912 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 14:28:11,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:28:11,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787061115] [2023-08-30 14:28:11,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787061115] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:28:11,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316276901] [2023-08-30 14:28:11,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:11,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:28:11,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:28:11,915 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 14:28:11,945 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 14:28:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:12,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 14:28:12,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:28:12,097 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 14:28:12,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:28:12,108 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 14:28:12,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316276901] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:28:12,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:28:12,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:28:12,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031351300] [2023-08-30 14:28:12,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:28:12,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:28:12,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:28:12,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:28:12,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:28:12,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 488 [2023-08-30 14:28:12,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 232.57142857142858) internal successors, (1628), 7 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:12,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:28:12,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 488 [2023-08-30 14:28:12,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:28:12,792 INFO L130 PetriNetUnfolder]: 4997/8229 cut-off events. [2023-08-30 14:28:12,792 INFO L131 PetriNetUnfolder]: For 149/149 co-relation queries the response was YES. [2023-08-30 14:28:12,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16197 conditions, 8229 events. 4997/8229 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 48608 event pairs, 4694 based on Foata normal form. 0/6112 useless extension candidates. Maximal degree in co-relation 16187. Up to 7854 conditions per place. [2023-08-30 14:28:12,819 INFO L137 encePairwiseOnDemand]: 485/488 looper letters, 61 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2023-08-30 14:28:12,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 73 transitions, 314 flow [2023-08-30 14:28:12,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:28:12,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:28:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1455 transitions. [2023-08-30 14:28:12,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4969262295081967 [2023-08-30 14:28:12,822 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1455 transitions. [2023-08-30 14:28:12,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1455 transitions. [2023-08-30 14:28:12,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:28:12,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1455 transitions. [2023-08-30 14:28:12,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:12,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 488.0) internal successors, (3416), 7 states have internal predecessors, (3416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:12,830 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 488.0) internal successors, (3416), 7 states have internal predecessors, (3416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:12,830 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 170 flow. Second operand 6 states and 1455 transitions. [2023-08-30 14:28:12,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 73 transitions, 314 flow [2023-08-30 14:28:12,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:28:12,834 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 205 flow [2023-08-30 14:28:12,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2023-08-30 14:28:12,836 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 9 predicate places. [2023-08-30 14:28:12,836 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 205 flow [2023-08-30 14:28:12,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 232.57142857142858) internal successors, (1628), 7 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:12,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:28:12,837 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 14:28:12,844 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 14:28:13,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:28:13,042 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 14:28:13,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:28:13,042 INFO L85 PathProgramCache]: Analyzing trace with hash -995084018, now seen corresponding path program 2 times [2023-08-30 14:28:13,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:28:13,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866060561] [2023-08-30 14:28:13,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:13,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:28:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:13,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:28:13,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:28:13,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866060561] [2023-08-30 14:28:13,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866060561] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:28:13,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:28:13,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:28:13,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312681172] [2023-08-30 14:28:13,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:28:13,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:28:13,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:28:13,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:28:13,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:28:13,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 488 [2023-08-30 14:28:13,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:13,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:28:13,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 488 [2023-08-30 14:28:13,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:28:13,620 INFO L130 PetriNetUnfolder]: 4854/7860 cut-off events. [2023-08-30 14:28:13,621 INFO L131 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2023-08-30 14:28:13,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15575 conditions, 7860 events. 4854/7860 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 45833 event pairs, 2346 based on Foata normal form. 0/5889 useless extension candidates. Maximal degree in co-relation 15561. Up to 7569 conditions per place. [2023-08-30 14:28:13,644 INFO L137 encePairwiseOnDemand]: 483/488 looper letters, 71 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-08-30 14:28:13,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 80 transitions, 365 flow [2023-08-30 14:28:13,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:28:13,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:28:13,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 768 transitions. [2023-08-30 14:28:13,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245901639344263 [2023-08-30 14:28:13,646 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 768 transitions. [2023-08-30 14:28:13,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 768 transitions. [2023-08-30 14:28:13,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:28:13,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 768 transitions. [2023-08-30 14:28:13,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:13,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 488.0) internal successors, (1952), 4 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:13,651 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 488.0) internal successors, (1952), 4 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:13,651 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 205 flow. Second operand 3 states and 768 transitions. [2023-08-30 14:28:13,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 80 transitions, 365 flow [2023-08-30 14:28:13,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 351 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:28:13,653 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 195 flow [2023-08-30 14:28:13,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2023-08-30 14:28:13,654 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 9 predicate places. [2023-08-30 14:28:13,654 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 195 flow [2023-08-30 14:28:13,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:13,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:28:13,655 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-30 14:28:13,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:28:13,655 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 14:28:13,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:28:13,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1502030822, now seen corresponding path program 1 times [2023-08-30 14:28:13,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:28:13,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597944642] [2023-08-30 14:28:13,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:13,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:28:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:28:13,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:28:13,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597944642] [2023-08-30 14:28:13,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597944642] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:28:13,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815064957] [2023-08-30 14:28:13,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:13,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:28:13,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:28:13,751 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 14:28:13,753 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 14:28:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:13,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:28:13,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:28:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:28:13,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:28:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:28:13,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815064957] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:28:13,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:28:13,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 14:28:13,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865194732] [2023-08-30 14:28:13,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:28:13,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 14:28:13,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:28:13,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 14:28:13,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 14:28:13,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 488 [2023-08-30 14:28:13,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 195 flow. Second operand has 13 states, 13 states have (on average 232.30769230769232) internal successors, (3020), 13 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:13,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:28:13,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 488 [2023-08-30 14:28:13,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:28:14,500 INFO L130 PetriNetUnfolder]: 4854/7899 cut-off events. [2023-08-30 14:28:14,500 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2023-08-30 14:28:14,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15645 conditions, 7899 events. 4854/7899 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 45933 event pairs, 4586 based on Foata normal form. 6/5932 useless extension candidates. Maximal degree in co-relation 15630. Up to 7576 conditions per place. [2023-08-30 14:28:14,529 INFO L137 encePairwiseOnDemand]: 485/488 looper letters, 59 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2023-08-30 14:28:14,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 77 transitions, 371 flow [2023-08-30 14:28:14,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 14:28:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 14:28:14,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2848 transitions. [2023-08-30 14:28:14,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48633879781420764 [2023-08-30 14:28:14,534 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2848 transitions. [2023-08-30 14:28:14,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2848 transitions. [2023-08-30 14:28:14,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:28:14,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2848 transitions. [2023-08-30 14:28:14,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 237.33333333333334) internal successors, (2848), 12 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:14,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 488.0) internal successors, (6344), 13 states have internal predecessors, (6344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:14,546 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 488.0) internal successors, (6344), 13 states have internal predecessors, (6344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:14,546 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 195 flow. Second operand 12 states and 2848 transitions. [2023-08-30 14:28:14,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 77 transitions, 371 flow [2023-08-30 14:28:14,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 77 transitions, 367 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:28:14,548 INFO L231 Difference]: Finished difference. Result has 93 places, 77 transitions, 275 flow [2023-08-30 14:28:14,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=275, PETRI_PLACES=93, PETRI_TRANSITIONS=77} [2023-08-30 14:28:14,549 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 24 predicate places. [2023-08-30 14:28:14,549 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 77 transitions, 275 flow [2023-08-30 14:28:14,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 232.30769230769232) internal successors, (3020), 13 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:14,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:28:14,550 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-30 14:28:14,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 14:28:14,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:28:14,756 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 14:28:14,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:28:14,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1771298886, now seen corresponding path program 2 times [2023-08-30 14:28:14,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:28:14,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36686997] [2023-08-30 14:28:14,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:14,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:28:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:28:15,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:28:15,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36686997] [2023-08-30 14:28:15,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36686997] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:28:15,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070720989] [2023-08-30 14:28:15,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:28:15,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:28:15,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:28:15,061 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 14:28:15,065 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 14:28:15,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 14:28:15,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:28:15,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 14:28:15,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:28:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:28:15,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:28:15,479 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:28:15,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070720989] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:28:15,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:28:15,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-30 14:28:15,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207381201] [2023-08-30 14:28:15,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:28:15,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 14:28:15,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:28:15,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 14:28:15,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-30 14:28:15,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 488 [2023-08-30 14:28:15,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 77 transitions, 275 flow. Second operand has 25 states, 25 states have (on average 232.16) internal successors, (5804), 25 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:15,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:28:15,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 488 [2023-08-30 14:28:15,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:28:16,385 INFO L130 PetriNetUnfolder]: 4854/7911 cut-off events. [2023-08-30 14:28:16,385 INFO L131 PetriNetUnfolder]: For 745/745 co-relation queries the response was YES. [2023-08-30 14:28:16,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15725 conditions, 7911 events. 4854/7911 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 45965 event pairs, 4586 based on Foata normal form. 12/5950 useless extension candidates. Maximal degree in co-relation 15703. Up to 7576 conditions per place. [2023-08-30 14:28:16,424 INFO L137 encePairwiseOnDemand]: 485/488 looper letters, 59 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2023-08-30 14:28:16,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 89 transitions, 535 flow [2023-08-30 14:28:16,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 14:28:16,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 14:28:16,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5638 transitions. [2023-08-30 14:28:16,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813866120218579 [2023-08-30 14:28:16,435 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5638 transitions. [2023-08-30 14:28:16,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5638 transitions. [2023-08-30 14:28:16,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:28:16,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5638 transitions. [2023-08-30 14:28:16,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 234.91666666666666) internal successors, (5638), 24 states have internal predecessors, (5638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:16,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 488.0) internal successors, (12200), 25 states have internal predecessors, (12200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:16,459 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 488.0) internal successors, (12200), 25 states have internal predecessors, (12200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:16,459 INFO L175 Difference]: Start difference. First operand has 93 places, 77 transitions, 275 flow. Second operand 24 states and 5638 transitions. [2023-08-30 14:28:16,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 89 transitions, 535 flow [2023-08-30 14:28:16,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 89 transitions, 463 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-08-30 14:28:16,463 INFO L231 Difference]: Finished difference. Result has 123 places, 89 transitions, 395 flow [2023-08-30 14:28:16,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=395, PETRI_PLACES=123, PETRI_TRANSITIONS=89} [2023-08-30 14:28:16,464 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 54 predicate places. [2023-08-30 14:28:16,464 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 89 transitions, 395 flow [2023-08-30 14:28:16,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 232.16) internal successors, (5804), 25 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:28:16,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:28:16,471 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-08-30 14:28:16,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:28:16,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:28:16,678 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 14:28:16,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:28:16,681 INFO L85 PathProgramCache]: Analyzing trace with hash -396300026, now seen corresponding path program 3 times [2023-08-30 14:28:16,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:28:16,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791689493] [2023-08-30 14:28:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:28:16,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:28:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:28:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:28:17,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:28:17,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791689493] [2023-08-30 14:28:17,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791689493] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:28:17,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479607260] [2023-08-30 14:28:17,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 14:28:17,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:28:17,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:28:17,518 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 14:28:17,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process Killed by 15