/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 08:16:46,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 08:16:46,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 08:16:46,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 08:16:46,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 08:16:46,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 08:16:46,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 08:16:46,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 08:16:46,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 08:16:46,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 08:16:46,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 08:16:46,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 08:16:46,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 08:16:46,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 08:16:46,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 08:16:46,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 08:16:46,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 08:16:46,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 08:16:46,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 08:16:46,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 08:16:46,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 08:16:46,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 08:16:46,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 08:16:46,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 08:16:46,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 08:16:46,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 08:16:46,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 08:16:46,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 08:16:46,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 08:16:46,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 08:16:46,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 08:16:46,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 08:16:46,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 08:16:46,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 08:16:46,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 08:16:46,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 08:16:46,954 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 08:16:46,979 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 08:16:46,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 08:16:46,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 08:16:46,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 08:16:46,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 08:16:46,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 08:16:46,981 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 08:16:46,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 08:16:46,981 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 08:16:46,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 08:16:46,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 08:16:46,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 08:16:46,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 08:16:46,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 08:16:46,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 08:16:46,982 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 08:16:46,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 08:16:46,983 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 08:16:46,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 08:16:46,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 08:16:46,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 08:16:46,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 08:16:46,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 08:16:46,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 08:16:46,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 08:16:46,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 08:16:46,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 08:16:46,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 08:16:46,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 08:16:46,984 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 08:16:46,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 08:16:46,984 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 08:16:47,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 08:16:47,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 08:16:47,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 08:16:47,201 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 08:16:47,202 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 08:16:47,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-01-28 08:16:48,265 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 08:16:48,481 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 08:16:48,481 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-01-28 08:16:48,490 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e0d2241/a0eed889f95649f0a749e572a372c492/FLAG5f9165c3b [2023-01-28 08:16:48,500 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29e0d2241/a0eed889f95649f0a749e572a372c492 [2023-01-28 08:16:48,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 08:16:48,503 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 08:16:48,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 08:16:48,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 08:16:48,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 08:16:48,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:16:48" (1/1) ... [2023-01-28 08:16:48,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15df6d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:48, skipping insertion in model container [2023-01-28 08:16:48,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:16:48" (1/1) ... [2023-01-28 08:16:48,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 08:16:48,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 08:16:48,833 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_90-arrayloop2_racing.i[47038,47051] [2023-01-28 08:16:48,845 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 08:16:48,845 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 08:16:48,845 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 08:16:48,846 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 08:16:48,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 08:16:48,904 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 08:16:48,928 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_90-arrayloop2_racing.i[47038,47051] [2023-01-28 08:16:48,930 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 08:16:48,930 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 08:16:48,930 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 08:16:48,931 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 08:16:48,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 08:16:48,979 INFO L208 MainTranslator]: Completed translation [2023-01-28 08:16:48,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:48 WrapperNode [2023-01-28 08:16:48,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 08:16:48,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 08:16:48,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 08:16:48,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 08:16:48,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:48" (1/1) ... [2023-01-28 08:16:49,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:48" (1/1) ... [2023-01-28 08:16:49,037 INFO L138 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 304 [2023-01-28 08:16:49,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 08:16:49,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 08:16:49,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 08:16:49,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 08:16:49,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:48" (1/1) ... [2023-01-28 08:16:49,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:48" (1/1) ... [2023-01-28 08:16:49,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:48" (1/1) ... [2023-01-28 08:16:49,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:48" (1/1) ... [2023-01-28 08:16:49,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:48" (1/1) ... [2023-01-28 08:16:49,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:48" (1/1) ... [2023-01-28 08:16:49,072 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:48" (1/1) ... [2023-01-28 08:16:49,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:48" (1/1) ... [2023-01-28 08:16:49,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 08:16:49,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 08:16:49,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 08:16:49,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 08:16:49,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:48" (1/1) ... [2023-01-28 08:16:49,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 08:16:49,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:16:49,103 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) [2023-01-28 08:16:49,122 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 [2023-01-28 08:16:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 08:16:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-28 08:16:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-01-28 08:16:49,132 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-01-28 08:16:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 08:16:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 08:16:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-01-28 08:16:49,132 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-01-28 08:16:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 08:16:49,132 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 08:16:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 08:16:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 08:16:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 08:16:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 08:16:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 08:16:49,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 08:16:49,134 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 08:16:49,256 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 08:16:49,257 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 08:16:49,636 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 08:16:49,642 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 08:16:49,642 INFO L302 CfgBuilder]: Removed 30 assume(true) statements. [2023-01-28 08:16:49,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:16:49 BoogieIcfgContainer [2023-01-28 08:16:49,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 08:16:49,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 08:16:49,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 08:16:49,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 08:16:49,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 08:16:48" (1/3) ... [2023-01-28 08:16:49,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77178d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:16:49, skipping insertion in model container [2023-01-28 08:16:49,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:16:48" (2/3) ... [2023-01-28 08:16:49,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77178d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:16:49, skipping insertion in model container [2023-01-28 08:16:49,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:16:49" (3/3) ... [2023-01-28 08:16:49,651 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2023-01-28 08:16:49,663 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 08:16:49,663 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 08:16:49,664 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 08:16:49,759 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 08:16:49,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 302 transitions, 626 flow [2023-01-28 08:16:49,930 INFO L130 PetriNetUnfolder]: 77/493 cut-off events. [2023-01-28 08:16:49,930 INFO L131 PetriNetUnfolder]: For 8/14 co-relation queries the response was YES. [2023-01-28 08:16:49,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 493 events. 77/493 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2235 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 255. Up to 8 conditions per place. [2023-01-28 08:16:49,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 302 transitions, 626 flow [2023-01-28 08:16:49,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 302 transitions, 626 flow [2023-01-28 08:16:49,953 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 08:16:49,962 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 302 transitions, 626 flow [2023-01-28 08:16:49,966 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 302 transitions, 626 flow [2023-01-28 08:16:49,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 302 transitions, 626 flow [2023-01-28 08:16:50,007 INFO L130 PetriNetUnfolder]: 77/493 cut-off events. [2023-01-28 08:16:50,008 INFO L131 PetriNetUnfolder]: For 8/14 co-relation queries the response was YES. [2023-01-28 08:16:50,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 493 events. 77/493 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2235 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 255. Up to 8 conditions per place. [2023-01-28 08:16:50,024 INFO L119 LiptonReduction]: Number of co-enabled transitions 31320 [2023-01-28 08:17:04,425 WARN L222 SmtUtils]: Spent 7.41s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 08:17:11,672 WARN L222 SmtUtils]: Spent 7.25s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 08:17:17,448 WARN L222 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 08:17:22,805 WARN L222 SmtUtils]: Spent 5.36s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 08:17:22,810 INFO L134 LiptonReduction]: Checked pairs total: 50902 [2023-01-28 08:17:22,810 INFO L136 LiptonReduction]: Total number of compositions: 256 [2023-01-28 08:17:22,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 08:17:22,855 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=false, 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;@7beaa1d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 08:17:22,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 08:17:22,868 INFO L130 PetriNetUnfolder]: 16/75 cut-off events. [2023-01-28 08:17:22,868 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 08:17:22,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:17:22,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:17:22,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 08:17:22,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:17:22,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1212576408, now seen corresponding path program 1 times [2023-01-28 08:17:22,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:17:22,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142534305] [2023-01-28 08:17:22,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:17:22,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:17:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:17:23,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:17:23,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:17:23,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142534305] [2023-01-28 08:17:23,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142534305] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:17:23,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:17:23,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 08:17:23,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827671542] [2023-01-28 08:17:23,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:17:23,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:17:23,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:17:23,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:17:23,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 08:17:23,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 558 [2023-01-28 08:17:23,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 93 transitions, 208 flow. Second operand has 3 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) [2023-01-28 08:17:23,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:17:23,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 558 [2023-01-28 08:17:23,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:17:24,016 INFO L130 PetriNetUnfolder]: 5341/8583 cut-off events. [2023-01-28 08:17:24,016 INFO L131 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2023-01-28 08:17:24,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16472 conditions, 8583 events. 5341/8583 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 51439 event pairs, 4400 based on Foata normal form. 1159/7780 useless extension candidates. Maximal degree in co-relation 15575. Up to 7762 conditions per place. [2023-01-28 08:17:24,053 INFO L137 encePairwiseOnDemand]: 535/558 looper letters, 60 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-01-28 08:17:24,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 76 transitions, 298 flow [2023-01-28 08:17:24,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 08:17:24,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 08:17:24,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 833 transitions. [2023-01-28 08:17:24,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.497610513739546 [2023-01-28 08:17:24,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 833 transitions. [2023-01-28 08:17:24,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 833 transitions. [2023-01-28 08:17:24,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:17:24,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 833 transitions. [2023-01-28 08:17:24,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:24,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:24,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:24,078 INFO L175 Difference]: Start difference. First operand has 66 places, 93 transitions, 208 flow. Second operand 3 states and 833 transitions. [2023-01-28 08:17:24,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 76 transitions, 298 flow [2023-01-28 08:17:24,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 298 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 08:17:24,083 INFO L231 Difference]: Finished difference. Result has 69 places, 74 transitions, 180 flow [2023-01-28 08:17:24,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=69, PETRI_TRANSITIONS=74} [2023-01-28 08:17:24,087 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-01-28 08:17:24,087 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 180 flow [2023-01-28 08:17:24,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-01-28 08:17:24,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:17:24,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:17:24,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 08:17:24,088 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 08:17:24,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:17:24,088 INFO L85 PathProgramCache]: Analyzing trace with hash 92120860, now seen corresponding path program 1 times [2023-01-28 08:17:24,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:17:24,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581468237] [2023-01-28 08:17:24,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:17:24,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:17:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:17:24,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:17:24,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:17:24,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581468237] [2023-01-28 08:17:24,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581468237] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:17:24,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:17:24,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 08:17:24,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91929123] [2023-01-28 08:17:24,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:17:24,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:17:24,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:17:24,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:17:24,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 08:17:24,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 558 [2023-01-28 08:17:24,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:24,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:17:24,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 558 [2023-01-28 08:17:24,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:17:24,997 INFO L130 PetriNetUnfolder]: 5341/8585 cut-off events. [2023-01-28 08:17:24,997 INFO L131 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2023-01-28 08:17:25,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16483 conditions, 8585 events. 5341/8585 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 51437 event pairs, 4400 based on Foata normal form. 2/6628 useless extension candidates. Maximal degree in co-relation 16464. Up to 7765 conditions per place. [2023-01-28 08:17:25,047 INFO L137 encePairwiseOnDemand]: 555/558 looper letters, 59 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-01-28 08:17:25,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 304 flow [2023-01-28 08:17:25,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 08:17:25,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 08:17:25,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 820 transitions. [2023-01-28 08:17:25,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48984468339307047 [2023-01-28 08:17:25,050 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 820 transitions. [2023-01-28 08:17:25,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 820 transitions. [2023-01-28 08:17:25,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:17:25,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 820 transitions. [2023-01-28 08:17:25,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:25,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:25,057 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:25,057 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 180 flow. Second operand 3 states and 820 transitions. [2023-01-28 08:17:25,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 304 flow [2023-01-28 08:17:25,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 75 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 08:17:25,060 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 192 flow [2023-01-28 08:17:25,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2023-01-28 08:17:25,061 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2023-01-28 08:17:25,061 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 192 flow [2023-01-28 08:17:25,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:25,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:17:25,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:17:25,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 08:17:25,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 08:17:25,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:17:25,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1317204216, now seen corresponding path program 1 times [2023-01-28 08:17:25,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:17:25,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869069769] [2023-01-28 08:17:25,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:17:25,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:17:25,090 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 08:17:25,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [567441750] [2023-01-28 08:17:25,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:17:25,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:17:25,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:17:25,094 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) [2023-01-28 08:17:25,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 08:17:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:17:25,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 08:17:25,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:17:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:17:25,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:17:25,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:17:25,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:17:25,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869069769] [2023-01-28 08:17:25,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 08:17:25,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567441750] [2023-01-28 08:17:25,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567441750] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:17:25,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-28 08:17:25,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-01-28 08:17:25,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366352838] [2023-01-28 08:17:25,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-28 08:17:25,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 08:17:25,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:17:25,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 08:17:25,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-28 08:17:25,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 558 [2023-01-28 08:17:25,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 255.5) internal successors, (1533), 6 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:25,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:17:25,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 558 [2023-01-28 08:17:25,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:17:26,185 INFO L130 PetriNetUnfolder]: 5341/8591 cut-off events. [2023-01-28 08:17:26,186 INFO L131 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2023-01-28 08:17:26,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16511 conditions, 8591 events. 5341/8591 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 51480 event pairs, 4400 based on Foata normal form. 6/6638 useless extension candidates. Maximal degree in co-relation 16471. Up to 7765 conditions per place. [2023-01-28 08:17:26,222 INFO L137 encePairwiseOnDemand]: 555/558 looper letters, 59 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2023-01-28 08:17:26,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 78 transitions, 332 flow [2023-01-28 08:17:26,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 08:17:26,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 08:17:26,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1584 transitions. [2023-01-28 08:17:26,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2023-01-28 08:17:26,226 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1584 transitions. [2023-01-28 08:17:26,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1584 transitions. [2023-01-28 08:17:26,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:17:26,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1584 transitions. [2023-01-28 08:17:26,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:26,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:26,233 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:26,234 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 192 flow. Second operand 6 states and 1584 transitions. [2023-01-28 08:17:26,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 78 transitions, 332 flow [2023-01-28 08:17:26,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 78 transitions, 328 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 08:17:26,238 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 230 flow [2023-01-28 08:17:26,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2023-01-28 08:17:26,239 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2023-01-28 08:17:26,239 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 230 flow [2023-01-28 08:17:26,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 255.5) internal successors, (1533), 6 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:26,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:17:26,240 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:17:26,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 08:17:26,445 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 [2023-01-28 08:17:26,446 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 08:17:26,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:17:26,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1106361828, now seen corresponding path program 2 times [2023-01-28 08:17:26,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:17:26,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465272534] [2023-01-28 08:17:26,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:17:26,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:17:26,500 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 08:17:26,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061655687] [2023-01-28 08:17:26,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:17:26,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:17:26,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:17:26,523 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) [2023-01-28 08:17:26,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 08:17:26,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:17:26,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:17:26,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 08:17:26,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:17:26,812 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:17:26,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:17:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 08:17:26,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:17:26,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465272534] [2023-01-28 08:17:26,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 08:17:26,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061655687] [2023-01-28 08:17:26,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061655687] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:17:26,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-28 08:17:26,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-01-28 08:17:26,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493854702] [2023-01-28 08:17:26,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-28 08:17:26,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 08:17:26,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:17:26,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 08:17:26,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-01-28 08:17:26,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 558 [2023-01-28 08:17:26,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 230 flow. Second operand has 12 states, 12 states have (on average 254.75) internal successors, (3057), 12 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:26,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:17:26,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 558 [2023-01-28 08:17:26,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:17:27,964 INFO L130 PetriNetUnfolder]: 5341/8603 cut-off events. [2023-01-28 08:17:27,964 INFO L131 PetriNetUnfolder]: For 257/257 co-relation queries the response was YES. [2023-01-28 08:17:27,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16582 conditions, 8603 events. 5341/8603 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 51562 event pairs, 4400 based on Foata normal form. 12/6656 useless extension candidates. Maximal degree in co-relation 16467. Up to 7765 conditions per place. [2023-01-28 08:17:27,997 INFO L137 encePairwiseOnDemand]: 555/558 looper letters, 59 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2023-01-28 08:17:27,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 406 flow [2023-01-28 08:17:27,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 08:17:27,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 08:17:28,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3111 transitions. [2023-01-28 08:17:28,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646057347670251 [2023-01-28 08:17:28,002 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3111 transitions. [2023-01-28 08:17:28,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3111 transitions. [2023-01-28 08:17:28,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:17:28,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3111 transitions. [2023-01-28 08:17:28,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 259.25) internal successors, (3111), 12 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:28,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:28,016 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:28,016 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 230 flow. Second operand 12 states and 3111 transitions. [2023-01-28 08:17:28,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 406 flow [2023-01-28 08:17:28,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 84 transitions, 392 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-28 08:17:28,021 INFO L231 Difference]: Finished difference. Result has 94 places, 84 transitions, 312 flow [2023-01-28 08:17:28,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=312, PETRI_PLACES=94, PETRI_TRANSITIONS=84} [2023-01-28 08:17:28,023 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 28 predicate places. [2023-01-28 08:17:28,023 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 84 transitions, 312 flow [2023-01-28 08:17:28,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 254.75) internal successors, (3057), 12 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:28,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:17:28,025 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:17:28,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 08:17:28,234 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,SelfDestructingSolverStorable3 [2023-01-28 08:17:28,234 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 08:17:28,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:17:28,235 INFO L85 PathProgramCache]: Analyzing trace with hash -827270500, now seen corresponding path program 3 times [2023-01-28 08:17:28,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:17:28,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315407215] [2023-01-28 08:17:28,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:17:28,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:17:28,356 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 08:17:28,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198335131] [2023-01-28 08:17:28,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 08:17:28,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:17:28,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:17:28,358 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) [2023-01-28 08:17:28,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 08:17:28,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 08:17:28,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:17:28,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 08:17:28,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:17:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-01-28 08:17:28,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:17:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-01-28 08:17:28,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:17:28,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315407215] [2023-01-28 08:17:28,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 08:17:28,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198335131] [2023-01-28 08:17:28,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198335131] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:17:28,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-28 08:17:28,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-01-28 08:17:28,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403246180] [2023-01-28 08:17:28,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-28 08:17:28,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 08:17:28,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:17:28,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 08:17:28,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-28 08:17:28,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 558 [2023-01-28 08:17:28,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 84 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 252.83333333333334) internal successors, (1517), 6 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:28,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:17:28,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 558 [2023-01-28 08:17:28,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:17:30,071 INFO L130 PetriNetUnfolder]: 5351/8689 cut-off events. [2023-01-28 08:17:30,071 INFO L131 PetriNetUnfolder]: For 363/363 co-relation queries the response was YES. [2023-01-28 08:17:30,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16830 conditions, 8689 events. 5351/8689 cut-off events. For 363/363 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 52052 event pairs, 4400 based on Foata normal form. 3/6764 useless extension candidates. Maximal degree in co-relation 16523. Up to 7759 conditions per place. [2023-01-28 08:17:30,109 INFO L137 encePairwiseOnDemand]: 554/558 looper letters, 103 selfloop transitions, 6 changer transitions 0/123 dead transitions. [2023-01-28 08:17:30,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 123 transitions, 879 flow [2023-01-28 08:17:30,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 08:17:30,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 08:17:30,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1572 transitions. [2023-01-28 08:17:30,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46953405017921146 [2023-01-28 08:17:30,114 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1572 transitions. [2023-01-28 08:17:30,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1572 transitions. [2023-01-28 08:17:30,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:17:30,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1572 transitions. [2023-01-28 08:17:30,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:30,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:30,124 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:30,124 INFO L175 Difference]: Start difference. First operand has 94 places, 84 transitions, 312 flow. Second operand 6 states and 1572 transitions. [2023-01-28 08:17:30,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 123 transitions, 879 flow [2023-01-28 08:17:30,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 685 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-01-28 08:17:30,129 INFO L231 Difference]: Finished difference. Result has 98 places, 87 transitions, 347 flow [2023-01-28 08:17:30,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=347, PETRI_PLACES=98, PETRI_TRANSITIONS=87} [2023-01-28 08:17:30,130 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 32 predicate places. [2023-01-28 08:17:30,130 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 87 transitions, 347 flow [2023-01-28 08:17:30,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.83333333333334) internal successors, (1517), 6 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:30,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:17:30,131 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:17:30,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 08:17:30,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:17:30,338 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 08:17:30,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:17:30,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1775611448, now seen corresponding path program 4 times [2023-01-28 08:17:30,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:17:30,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334242094] [2023-01-28 08:17:30,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:17:30,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:17:30,758 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 08:17:30,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438491644] [2023-01-28 08:17:30,759 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 08:17:30,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:17:30,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:17:30,760 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) [2023-01-28 08:17:30,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 08:17:33,104 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 08:17:33,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:17:33,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 9528 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 08:17:33,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:17:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2023-01-28 08:17:33,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:17:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2023-01-28 08:17:33,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:17:33,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334242094] [2023-01-28 08:17:33,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 08:17:33,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438491644] [2023-01-28 08:17:33,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438491644] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:17:33,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-28 08:17:33,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-01-28 08:17:33,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694694112] [2023-01-28 08:17:33,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-28 08:17:33,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 08:17:33,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:17:33,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 08:17:33,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-01-28 08:17:33,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 558 [2023-01-28 08:17:33,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 87 transitions, 347 flow. Second operand has 24 states, 24 states have (on average 254.5) internal successors, (6108), 24 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:33,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:17:33,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 558 [2023-01-28 08:17:33,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:17:35,701 INFO L130 PetriNetUnfolder]: 5351/8737 cut-off events. [2023-01-28 08:17:35,701 INFO L131 PetriNetUnfolder]: For 3689/3689 co-relation queries the response was YES. [2023-01-28 08:17:35,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16946 conditions, 8737 events. 5351/8737 cut-off events. For 3689/3689 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 52001 event pairs, 4400 based on Foata normal form. 48/6857 useless extension candidates. Maximal degree in co-relation 16528. Up to 7771 conditions per place. [2023-01-28 08:17:35,735 INFO L137 encePairwiseOnDemand]: 555/558 looper letters, 61 selfloop transitions, 24 changer transitions 0/99 dead transitions. [2023-01-28 08:17:35,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 99 transitions, 589 flow [2023-01-28 08:17:35,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 08:17:35,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 08:17:35,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6165 transitions. [2023-01-28 08:17:35,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603494623655914 [2023-01-28 08:17:35,746 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6165 transitions. [2023-01-28 08:17:35,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6165 transitions. [2023-01-28 08:17:35,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:17:35,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6165 transitions. [2023-01-28 08:17:35,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 256.875) internal successors, (6165), 24 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:35,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 558.0) internal successors, (13950), 25 states have internal predecessors, (13950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:35,772 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 558.0) internal successors, (13950), 25 states have internal predecessors, (13950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:35,772 INFO L175 Difference]: Start difference. First operand has 98 places, 87 transitions, 347 flow. Second operand 24 states and 6165 transitions. [2023-01-28 08:17:35,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 99 transitions, 589 flow [2023-01-28 08:17:35,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 99 transitions, 581 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-28 08:17:35,775 INFO L231 Difference]: Finished difference. Result has 132 places, 99 transitions, 581 flow [2023-01-28 08:17:35,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=581, PETRI_PLACES=132, PETRI_TRANSITIONS=99} [2023-01-28 08:17:35,886 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 66 predicate places. [2023-01-28 08:17:35,887 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 99 transitions, 581 flow [2023-01-28 08:17:35,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 254.5) internal successors, (6108), 24 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 08:17:35,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:17:35,888 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:17:35,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 08:17:36,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:17:36,089 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 08:17:36,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:17:36,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1993810376, now seen corresponding path program 5 times [2023-01-28 08:17:36,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:17:36,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134328119] [2023-01-28 08:17:36,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:17:36,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:17:36,779 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 08:17:36,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450233275] [2023-01-28 08:17:36,780 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 08:17:36,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:17:36,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:17:36,794 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:17:36,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-01-28 08:31:29,543 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 08:31:29,543 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 08:31:30,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-01-28 08:31:30,748 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-01-28 08:31:30,784 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-01-28 08:31:30,785 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 08:31:30,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:31:30,786 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 108 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-01-28 08:31:30,787 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-01-28 08:31:30,787 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-01-28 08:31:30,787 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-01-28 08:31:30,788 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-01-28 08:31:30,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-01-28 08:31:30,796 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT (1/2) [2023-01-28 08:31:30,805 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 08:31:30,805 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 08:31:30,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 08:31:30 BasicIcfg [2023-01-28 08:31:30,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 08:31:30,807 INFO L158 Benchmark]: Toolchain (without parser) took 882304.57ms. Allocated memory was 597.7MB in the beginning and 1.1GB in the end (delta: 532.7MB). Free memory was 544.7MB in the beginning and 740.6MB in the end (delta: -195.9MB). Peak memory consumption was 339.5MB. Max. memory is 16.0GB. [2023-01-28 08:31:30,807 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 346.0MB. Free memory is still 292.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 08:31:30,807 INFO L158 Benchmark]: CACSL2BoogieTranslator took 474.92ms. Allocated memory is still 597.7MB. Free memory was 544.3MB in the beginning and 513.0MB in the end (delta: 31.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-01-28 08:31:30,808 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.88ms. Allocated memory is still 597.7MB. Free memory was 512.8MB in the beginning and 509.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 08:31:30,808 INFO L158 Benchmark]: Boogie Preprocessor took 37.73ms. Allocated memory is still 597.7MB. Free memory was 509.6MB in the beginning and 506.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 08:31:30,808 INFO L158 Benchmark]: RCFGBuilder took 567.59ms. Allocated memory is still 597.7MB. Free memory was 506.7MB in the beginning and 558.5MB in the end (delta: -51.8MB). Peak memory consumption was 33.0MB. Max. memory is 16.0GB. [2023-01-28 08:31:30,808 INFO L158 Benchmark]: TraceAbstraction took 881161.77ms. Allocated memory was 597.7MB in the beginning and 1.1GB in the end (delta: 532.7MB). Free memory was 557.4MB in the beginning and 740.6MB in the end (delta: -183.2MB). Peak memory consumption was 350.5MB. Max. memory is 16.0GB. [2023-01-28 08:31:30,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 346.0MB. Free memory is still 292.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 474.92ms. Allocated memory is still 597.7MB. Free memory was 544.3MB in the beginning and 513.0MB in the end (delta: 31.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.88ms. Allocated memory is still 597.7MB. Free memory was 512.8MB in the beginning and 509.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 37.73ms. Allocated memory is still 597.7MB. Free memory was 509.6MB in the beginning and 506.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 567.59ms. Allocated memory is still 597.7MB. Free memory was 506.7MB in the beginning and 558.5MB in the end (delta: -51.8MB). Peak memory consumption was 33.0MB. Max. memory is 16.0GB. * TraceAbstraction took 881161.77ms. Allocated memory was 597.7MB in the beginning and 1.1GB in the end (delta: 532.7MB). Free memory was 557.4MB in the beginning and 740.6MB in the end (delta: -183.2MB). Peak memory consumption was 350.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.8s, 261 PlacesBefore, 66 PlacesAfterwards, 302 TransitionsBefore, 93 TransitionsAfterwards, 31320 CoEnabledTransitionPairs, 7 FixpointIterations, 62 TrivialSequentialCompositions, 138 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 38 ConcurrentYvCompositions, 14 ChoiceCompositions, 256 TotalNumberOfCompositions, 50902 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 27873, independent: 27467, independent conditional: 0, independent unconditional: 27467, dependent: 406, dependent conditional: 0, dependent unconditional: 406, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 15708, independent: 15630, independent conditional: 0, independent unconditional: 15630, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 27873, independent: 11837, independent conditional: 0, independent unconditional: 11837, dependent: 328, dependent conditional: 0, dependent unconditional: 328, unknown: 15708, unknown conditional: 0, unknown unconditional: 15708] , Statistics on independence cache: Total cache size (in pairs): 515, Positive cache size: 479, Positive conditional cache size: 0, Positive unconditional cache size: 479, Negative cache size: 36, Negative conditional cache size: 0, Negative unconditional cache size: 36, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 108 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 108 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 399 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 881.0s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 33.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 968 IncrementalHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 968 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=581occurred in iteration=6, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 137 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 240 ConstructedInterpolants, 0 QuantifiedInterpolants, 368 SizeOfPredicates, 0 NumberOfNonLiveVariables, 11205 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 1917/2051 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown