/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/pthread-deagle/circular_buffer_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 12:17:30,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 12:17:30,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 12:17:30,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 12:17:30,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 12:17:30,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 12:17:30,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 12:17:30,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 12:17:30,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 12:17:30,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 12:17:30,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 12:17:30,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 12:17:30,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 12:17:30,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 12:17:30,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 12:17:30,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 12:17:30,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 12:17:30,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 12:17:30,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 12:17:30,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 12:17:30,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 12:17:30,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 12:17:30,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 12:17:30,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 12:17:30,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 12:17:30,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 12:17:30,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 12:17:30,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 12:17:30,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 12:17:30,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 12:17:30,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 12:17:30,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 12:17:30,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 12:17:30,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 12:17:30,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 12:17:30,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 12:17:30,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 12:17:30,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 12:17:30,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 12:17:30,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 12:17:30,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 12:17:30,098 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 12:17:30,122 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 12:17:30,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 12:17:30,122 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 12:17:30,123 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 12:17:30,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 12:17:30,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 12:17:30,123 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 12:17:30,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 12:17:30,124 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 12:17:30,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 12:17:30,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 12:17:30,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 12:17:30,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 12:17:30,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 12:17:30,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 12:17:30,125 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 12:17:30,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 12:17:30,125 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 12:17:30,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 12:17:30,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 12:17:30,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 12:17:30,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 12:17:30,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 12:17:30,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:17:30,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 12:17:30,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 12:17:30,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 12:17:30,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 12:17:30,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 12:17:30,126 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 12:17:30,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 12:17:30,126 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 12:17:30,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 12:17:30,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 12:17:30,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 12:17:30,317 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 12:17:30,319 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 12:17:30,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2023-01-28 12:17:31,215 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 12:17:31,386 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 12:17:31,386 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2023-01-28 12:17:31,397 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40d16e22d/0a0c681a3d39430cabb3d8f3eff854d8/FLAG2a2b47334 [2023-01-28 12:17:31,412 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40d16e22d/0a0c681a3d39430cabb3d8f3eff854d8 [2023-01-28 12:17:31,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 12:17:31,415 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 12:17:31,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 12:17:31,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 12:17:31,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 12:17:31,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:17:31" (1/1) ... [2023-01-28 12:17:31,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38dfe7d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:31, skipping insertion in model container [2023-01-28 12:17:31,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:17:31" (1/1) ... [2023-01-28 12:17:31,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 12:17:31,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 12:17:31,690 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30451,30464] [2023-01-28 12:17:31,696 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30681,30694] [2023-01-28 12:17:31,701 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30979,30992] [2023-01-28 12:17:31,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:17:31,716 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 12:17:31,741 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30451,30464] [2023-01-28 12:17:31,742 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30681,30694] [2023-01-28 12:17:31,743 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i[30979,30992] [2023-01-28 12:17:31,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:17:31,772 INFO L208 MainTranslator]: Completed translation [2023-01-28 12:17:31,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:31 WrapperNode [2023-01-28 12:17:31,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 12:17:31,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 12:17:31,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 12:17:31,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 12:17:31,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:31" (1/1) ... [2023-01-28 12:17:31,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:31" (1/1) ... [2023-01-28 12:17:31,827 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 142 [2023-01-28 12:17:31,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 12:17:31,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 12:17:31,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 12:17:31,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 12:17:31,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:31" (1/1) ... [2023-01-28 12:17:31,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:31" (1/1) ... [2023-01-28 12:17:31,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:31" (1/1) ... [2023-01-28 12:17:31,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:31" (1/1) ... [2023-01-28 12:17:31,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:31" (1/1) ... [2023-01-28 12:17:31,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:31" (1/1) ... [2023-01-28 12:17:31,854 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:31" (1/1) ... [2023-01-28 12:17:31,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:31" (1/1) ... [2023-01-28 12:17:31,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 12:17:31,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 12:17:31,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 12:17:31,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 12:17:31,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:31" (1/1) ... [2023-01-28 12:17:31,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:17:31,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:31,887 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 12:17:31,888 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 12:17:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 12:17:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-28 12:17:31,916 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-28 12:17:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-28 12:17:31,916 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-28 12:17:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 12:17:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 12:17:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 12:17:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 12:17:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 12:17:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-01-28 12:17:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 12:17:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 12:17:31,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 12:17:31,917 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 12:17:32,084 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 12:17:32,085 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 12:17:32,243 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 12:17:32,248 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 12:17:32,248 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-28 12:17:32,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:17:32 BoogieIcfgContainer [2023-01-28 12:17:32,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 12:17:32,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 12:17:32,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 12:17:32,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 12:17:32,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:17:31" (1/3) ... [2023-01-28 12:17:32,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476be409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:17:32, skipping insertion in model container [2023-01-28 12:17:32,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:17:31" (2/3) ... [2023-01-28 12:17:32,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476be409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:17:32, skipping insertion in model container [2023-01-28 12:17:32,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:17:32" (3/3) ... [2023-01-28 12:17:32,255 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2023-01-28 12:17:32,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 12:17:32,266 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-01-28 12:17:32,266 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 12:17:32,322 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 12:17:32,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 148 transitions, 312 flow [2023-01-28 12:17:32,388 INFO L130 PetriNetUnfolder]: 11/146 cut-off events. [2023-01-28 12:17:32,389 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:17:32,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 146 events. 11/146 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 281 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-01-28 12:17:32,393 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 148 transitions, 312 flow [2023-01-28 12:17:32,396 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 137 transitions, 283 flow [2023-01-28 12:17:32,402 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 12:17:32,407 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 137 transitions, 283 flow [2023-01-28 12:17:32,409 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 137 transitions, 283 flow [2023-01-28 12:17:32,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 137 transitions, 283 flow [2023-01-28 12:17:32,444 INFO L130 PetriNetUnfolder]: 11/137 cut-off events. [2023-01-28 12:17:32,444 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 12:17:32,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 137 events. 11/137 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 266 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-01-28 12:17:32,447 INFO L119 LiptonReduction]: Number of co-enabled transitions 4498 [2023-01-28 12:17:36,333 INFO L134 LiptonReduction]: Checked pairs total: 9988 [2023-01-28 12:17:36,333 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-01-28 12:17:36,342 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 12:17:36,346 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;@1c6026dc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 12:17:36,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-01-28 12:17:36,348 INFO L130 PetriNetUnfolder]: 1/16 cut-off events. [2023-01-28 12:17:36,348 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 12:17:36,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:36,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-28 12:17:36,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 12:17:36,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:36,352 INFO L85 PathProgramCache]: Analyzing trace with hash -249038413, now seen corresponding path program 1 times [2023-01-28 12:17:36,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:36,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234556578] [2023-01-28 12:17:36,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:36,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:36,619 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 12:17:36,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:36,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234556578] [2023-01-28 12:17:36,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234556578] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:36,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:17:36,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 12:17:36,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957272122] [2023-01-28 12:17:36,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:36,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:17:36,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:36,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:17:36,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:17:36,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 263 [2023-01-28 12:17:36,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 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 12:17:36,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:36,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 263 [2023-01-28 12:17:36,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:36,811 INFO L130 PetriNetUnfolder]: 691/1209 cut-off events. [2023-01-28 12:17:36,811 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2023-01-28 12:17:36,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2360 conditions, 1209 events. 691/1209 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5241 event pairs, 225 based on Foata normal form. 36/944 useless extension candidates. Maximal degree in co-relation 2149. Up to 671 conditions per place. [2023-01-28 12:17:36,820 INFO L137 encePairwiseOnDemand]: 257/263 looper letters, 51 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-01-28 12:17:36,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 239 flow [2023-01-28 12:17:36,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:17:36,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:17:36,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-01-28 12:17:36,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541191381495564 [2023-01-28 12:17:36,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-01-28 12:17:36,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-01-28 12:17:36,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:36,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-01-28 12:17:36,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 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 12:17:36,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 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 12:17:36,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 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 12:17:36,847 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 85 flow. Second operand 3 states and 427 transitions. [2023-01-28 12:17:36,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 239 flow [2023-01-28 12:17:36,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 59 transitions, 231 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 12:17:36,852 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 94 flow [2023-01-28 12:17:36,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2023-01-28 12:17:36,856 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2023-01-28 12:17:36,856 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 94 flow [2023-01-28 12:17:36,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 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 12:17:36,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:36,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:36,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 12:17:36,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 12:17:36,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:36,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1190865823, now seen corresponding path program 1 times [2023-01-28 12:17:36,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:36,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764480652] [2023-01-28 12:17:36,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:36,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:36,906 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 12:17:36,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423591225] [2023-01-28 12:17:36,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:36,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:36,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:36,917 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 12:17:36,923 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 12:17:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:36,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 12:17:36,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:37,012 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 12:17:37,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 12:17:37,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:37,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764480652] [2023-01-28 12:17:37,012 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 12:17:37,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423591225] [2023-01-28 12:17:37,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423591225] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:37,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:17:37,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 12:17:37,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376176670] [2023-01-28 12:17:37,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:37,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:17:37,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:37,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:17:37,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:17:37,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 263 [2023-01-28 12:17:37,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 0 states have call successors, (0), 0 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 12:17:37,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:37,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 263 [2023-01-28 12:17:37,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:37,241 INFO L130 PetriNetUnfolder]: 768/1353 cut-off events. [2023-01-28 12:17:37,242 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-01-28 12:17:37,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2746 conditions, 1353 events. 768/1353 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6290 event pairs, 289 based on Foata normal form. 0/1085 useless extension candidates. Maximal degree in co-relation 2118. Up to 631 conditions per place. [2023-01-28 12:17:37,248 INFO L137 encePairwiseOnDemand]: 256/263 looper letters, 72 selfloop transitions, 7 changer transitions 0/85 dead transitions. [2023-01-28 12:17:37,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 85 transitions, 358 flow [2023-01-28 12:17:37,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:17:37,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:17:37,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 669 transitions. [2023-01-28 12:17:37,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508745247148289 [2023-01-28 12:17:37,251 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 669 transitions. [2023-01-28 12:17:37,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 669 transitions. [2023-01-28 12:17:37,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:37,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 669 transitions. [2023-01-28 12:17:37,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.8) internal successors, (669), 5 states have internal predecessors, (669), 0 states have call successors, (0), 0 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 12:17:37,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 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 12:17:37,256 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 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 12:17:37,256 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 94 flow. Second operand 5 states and 669 transitions. [2023-01-28 12:17:37,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 85 transitions, 358 flow [2023-01-28 12:17:37,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 85 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 12:17:37,260 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 125 flow [2023-01-28 12:17:37,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-01-28 12:17:37,262 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2023-01-28 12:17:37,262 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 125 flow [2023-01-28 12:17:37,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 0 states have call successors, (0), 0 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 12:17:37,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:37,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:37,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 12:17:37,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:37,468 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 12:17:37,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:37,469 INFO L85 PathProgramCache]: Analyzing trace with hash -975244755, now seen corresponding path program 1 times [2023-01-28 12:17:37,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:37,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264010714] [2023-01-28 12:17:37,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:37,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:37,553 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 12:17:37,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:37,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264010714] [2023-01-28 12:17:37,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264010714] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:37,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:17:37,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 12:17:37,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429483880] [2023-01-28 12:17:37,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:37,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:17:37,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:37,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:17:37,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:17:37,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 263 [2023-01-28 12:17:37,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 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 12:17:37,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:37,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 263 [2023-01-28 12:17:37,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:37,678 INFO L130 PetriNetUnfolder]: 938/1602 cut-off events. [2023-01-28 12:17:37,679 INFO L131 PetriNetUnfolder]: For 569/569 co-relation queries the response was YES. [2023-01-28 12:17:37,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3797 conditions, 1602 events. 938/1602 cut-off events. For 569/569 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6932 event pairs, 394 based on Foata normal form. 0/1357 useless extension candidates. Maximal degree in co-relation 3311. Up to 909 conditions per place. [2023-01-28 12:17:37,684 INFO L137 encePairwiseOnDemand]: 259/263 looper letters, 54 selfloop transitions, 3 changer transitions 3/64 dead transitions. [2023-01-28 12:17:37,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 64 transitions, 327 flow [2023-01-28 12:17:37,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:17:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:17:37,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-01-28 12:17:37,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652724968314322 [2023-01-28 12:17:37,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-01-28 12:17:37,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-01-28 12:17:37,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:37,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-01-28 12:17:37,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 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 12:17:37,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 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 12:17:37,688 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 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 12:17:37,689 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 125 flow. Second operand 3 states and 446 transitions. [2023-01-28 12:17:37,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 64 transitions, 327 flow [2023-01-28 12:17:37,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 64 transitions, 317 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 12:17:37,691 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 135 flow [2023-01-28 12:17:37,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2023-01-28 12:17:37,692 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2023-01-28 12:17:37,692 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 135 flow [2023-01-28 12:17:37,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 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 12:17:37,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:37,692 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:37,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 12:17:37,692 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 12:17:37,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:37,693 INFO L85 PathProgramCache]: Analyzing trace with hash 462982722, now seen corresponding path program 1 times [2023-01-28 12:17:37,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:37,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254867177] [2023-01-28 12:17:37,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:37,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:37,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 12:17:37,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396978834] [2023-01-28 12:17:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:37,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:37,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:37,706 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 12:17:37,708 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 12:17:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:37,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 12:17:37,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:37,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:37,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 12:17:37,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:37,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254867177] [2023-01-28 12:17:37,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 12:17:37,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396978834] [2023-01-28 12:17:37,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396978834] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:37,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:17:37,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 12:17:37,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105262363] [2023-01-28 12:17:37,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:37,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 12:17:37,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:37,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 12:17:37,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 12:17:37,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 263 [2023-01-28 12:17:37,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 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 12:17:37,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:37,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 263 [2023-01-28 12:17:37,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:37,930 INFO L130 PetriNetUnfolder]: 629/1157 cut-off events. [2023-01-28 12:17:37,930 INFO L131 PetriNetUnfolder]: For 421/421 co-relation queries the response was YES. [2023-01-28 12:17:37,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2605 conditions, 1157 events. 629/1157 cut-off events. For 421/421 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4983 event pairs, 467 based on Foata normal form. 64/1036 useless extension candidates. Maximal degree in co-relation 2203. Up to 988 conditions per place. [2023-01-28 12:17:37,936 INFO L137 encePairwiseOnDemand]: 260/263 looper letters, 29 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-01-28 12:17:37,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 177 flow [2023-01-28 12:17:37,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:17:37,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:17:37,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-01-28 12:17:37,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057034220532319 [2023-01-28 12:17:37,938 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-01-28 12:17:37,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-01-28 12:17:37,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:37,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-01-28 12:17:37,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 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 12:17:37,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 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 12:17:37,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 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 12:17:37,942 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 135 flow. Second operand 3 states and 399 transitions. [2023-01-28 12:17:37,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 177 flow [2023-01-28 12:17:37,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 12:17:37,944 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 110 flow [2023-01-28 12:17:37,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-01-28 12:17:37,945 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2023-01-28 12:17:37,945 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 110 flow [2023-01-28 12:17:37,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 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 12:17:37,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:37,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:37,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 12:17:38,151 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 12:17:38,152 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 12:17:38,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:38,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2106315209, now seen corresponding path program 1 times [2023-01-28 12:17:38,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:38,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351926075] [2023-01-28 12:17:38,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:38,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:38,186 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 12:17:38,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904739309] [2023-01-28 12:17:38,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:38,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:38,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:38,188 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 12:17:38,190 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 12:17:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:38,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 12:17:38,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:38,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 12:17:38,303 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 12:17:38,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 12:17:38,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:38,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351926075] [2023-01-28 12:17:38,304 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 12:17:38,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904739309] [2023-01-28 12:17:38,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904739309] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:38,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:17:38,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 12:17:38,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722031664] [2023-01-28 12:17:38,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:38,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:17:38,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:38,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:17:38,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:17:38,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 263 [2023-01-28 12:17:38,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 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 12:17:38,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:38,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 263 [2023-01-28 12:17:38,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:38,429 INFO L130 PetriNetUnfolder]: 509/940 cut-off events. [2023-01-28 12:17:38,429 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-01-28 12:17:38,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 940 events. 509/940 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4025 event pairs, 135 based on Foata normal form. 0/838 useless extension candidates. Maximal degree in co-relation 2067. Up to 552 conditions per place. [2023-01-28 12:17:38,432 INFO L137 encePairwiseOnDemand]: 259/263 looper letters, 38 selfloop transitions, 4 changer transitions 2/49 dead transitions. [2023-01-28 12:17:38,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 229 flow [2023-01-28 12:17:38,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:17:38,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:17:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2023-01-28 12:17:38,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183776932826363 [2023-01-28 12:17:38,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2023-01-28 12:17:38,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2023-01-28 12:17:38,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:38,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2023-01-28 12:17:38,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 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 12:17:38,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 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 12:17:38,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 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 12:17:38,436 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 110 flow. Second operand 3 states and 409 transitions. [2023-01-28 12:17:38,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 229 flow [2023-01-28 12:17:38,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 226 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 12:17:38,437 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 113 flow [2023-01-28 12:17:38,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2023-01-28 12:17:38,438 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2023-01-28 12:17:38,438 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 113 flow [2023-01-28 12:17:38,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 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 12:17:38,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:38,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:38,447 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 12:17:38,643 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 12:17:38,643 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 12:17:38,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:38,643 INFO L85 PathProgramCache]: Analyzing trace with hash 80410237, now seen corresponding path program 1 times [2023-01-28 12:17:38,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:38,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120675657] [2023-01-28 12:17:38,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:38,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:38,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 12:17:38,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261854864] [2023-01-28 12:17:38,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:38,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:38,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:38,655 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 12:17:38,657 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 12:17:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:38,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-28 12:17:38,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:38,925 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 12:17:38,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 12:17:38,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:38,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120675657] [2023-01-28 12:17:38,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 12:17:38,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261854864] [2023-01-28 12:17:38,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261854864] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:38,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:17:38,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 12:17:38,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782213779] [2023-01-28 12:17:38,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:38,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 12:17:38,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:38,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 12:17:38,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 12:17:38,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 263 [2023-01-28 12:17:38,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 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 12:17:38,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:38,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 263 [2023-01-28 12:17:38,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:39,058 INFO L130 PetriNetUnfolder]: 602/1172 cut-off events. [2023-01-28 12:17:39,058 INFO L131 PetriNetUnfolder]: For 176/178 co-relation queries the response was YES. [2023-01-28 12:17:39,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 1172 events. 602/1172 cut-off events. For 176/178 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5226 event pairs, 138 based on Foata normal form. 0/1113 useless extension candidates. Maximal degree in co-relation 2665. Up to 529 conditions per place. [2023-01-28 12:17:39,062 INFO L137 encePairwiseOnDemand]: 259/263 looper letters, 56 selfloop transitions, 4 changer transitions 5/72 dead transitions. [2023-01-28 12:17:39,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 72 transitions, 347 flow [2023-01-28 12:17:39,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 12:17:39,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 12:17:39,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 540 transitions. [2023-01-28 12:17:39,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133079847908745 [2023-01-28 12:17:39,063 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 540 transitions. [2023-01-28 12:17:39,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 540 transitions. [2023-01-28 12:17:39,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:39,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 540 transitions. [2023-01-28 12:17:39,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 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 12:17:39,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 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 12:17:39,067 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 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 12:17:39,067 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 113 flow. Second operand 4 states and 540 transitions. [2023-01-28 12:17:39,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 72 transitions, 347 flow [2023-01-28 12:17:39,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 72 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 12:17:39,069 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 134 flow [2023-01-28 12:17:39,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-01-28 12:17:39,071 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2023-01-28 12:17:39,071 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 134 flow [2023-01-28 12:17:39,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 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 12:17:39,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:39,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:39,077 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 12:17:39,276 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 12:17:39,277 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 12:17:39,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:39,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1189813252, now seen corresponding path program 1 times [2023-01-28 12:17:39,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:39,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734266960] [2023-01-28 12:17:39,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:39,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:39,288 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 12:17:39,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443674284] [2023-01-28 12:17:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:39,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:39,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:39,289 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 12:17:39,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 12:17:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:39,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 12:17:39,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:39,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 12:17:39,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2023-01-28 12:17:39,468 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-28 12:17:39,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-01-28 12:17:39,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-01-28 12:17:39,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2023-01-28 12:17:39,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2023-01-28 12:17:39,680 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 12:17:39,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 12:17:39,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:39,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734266960] [2023-01-28 12:17:39,680 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 12:17:39,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443674284] [2023-01-28 12:17:39,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443674284] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:39,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:17:39,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 12:17:39,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112067254] [2023-01-28 12:17:39,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:39,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 12:17:39,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:39,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 12:17:39,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 12:17:39,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 263 [2023-01-28 12:17:39,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 134 flow. Second operand has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 12:17:39,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:39,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 263 [2023-01-28 12:17:39,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:39,971 INFO L130 PetriNetUnfolder]: 922/1795 cut-off events. [2023-01-28 12:17:39,971 INFO L131 PetriNetUnfolder]: For 372/378 co-relation queries the response was YES. [2023-01-28 12:17:39,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4097 conditions, 1795 events. 922/1795 cut-off events. For 372/378 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 9196 event pairs, 288 based on Foata normal form. 12/1731 useless extension candidates. Maximal degree in co-relation 4083. Up to 833 conditions per place. [2023-01-28 12:17:39,979 INFO L137 encePairwiseOnDemand]: 254/263 looper letters, 66 selfloop transitions, 11 changer transitions 8/92 dead transitions. [2023-01-28 12:17:39,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 92 transitions, 462 flow [2023-01-28 12:17:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 12:17:39,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 12:17:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 756 transitions. [2023-01-28 12:17:39,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41064638783269963 [2023-01-28 12:17:39,981 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 756 transitions. [2023-01-28 12:17:39,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 756 transitions. [2023-01-28 12:17:39,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:39,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 756 transitions. [2023-01-28 12:17:39,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 0 states have call successors, (0), 0 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 12:17:39,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 states have internal predecessors, (2104), 0 states have call successors, (0), 0 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 12:17:39,985 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 states have internal predecessors, (2104), 0 states have call successors, (0), 0 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 12:17:39,985 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 134 flow. Second operand 7 states and 756 transitions. [2023-01-28 12:17:39,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 92 transitions, 462 flow [2023-01-28 12:17:39,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 92 transitions, 452 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 12:17:39,988 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 217 flow [2023-01-28 12:17:39,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-01-28 12:17:39,988 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2023-01-28 12:17:39,989 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 217 flow [2023-01-28 12:17:39,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 12:17:39,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:39,989 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:39,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 12:17:40,194 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 12:17:40,196 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 12:17:40,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:40,197 INFO L85 PathProgramCache]: Analyzing trace with hash 839130447, now seen corresponding path program 1 times [2023-01-28 12:17:40,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:40,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633061200] [2023-01-28 12:17:40,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:40,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:40,207 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 12:17:40,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1314228809] [2023-01-28 12:17:40,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:40,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:40,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:40,209 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:17:40,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 12:17:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:40,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 2 conjunts are in the unsatisfiable core [2023-01-28 12:17:40,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:40,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 12:17:40,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:40,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633061200] [2023-01-28 12:17:40,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 12:17:40,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314228809] [2023-01-28 12:17:40,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314228809] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:17:40,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:17:40,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 12:17:40,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471795487] [2023-01-28 12:17:40,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:17:40,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:17:40,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:40,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:17:40,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:17:40,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 263 [2023-01-28 12:17:40,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 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 12:17:40,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:40,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 263 [2023-01-28 12:17:40,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:40,454 INFO L130 PetriNetUnfolder]: 739/1428 cut-off events. [2023-01-28 12:17:40,454 INFO L131 PetriNetUnfolder]: For 880/880 co-relation queries the response was YES. [2023-01-28 12:17:40,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3581 conditions, 1428 events. 739/1428 cut-off events. For 880/880 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5820 event pairs, 232 based on Foata normal form. 38/1466 useless extension candidates. Maximal degree in co-relation 3563. Up to 837 conditions per place. [2023-01-28 12:17:40,458 INFO L137 encePairwiseOnDemand]: 259/263 looper letters, 47 selfloop transitions, 2 changer transitions 6/59 dead transitions. [2023-01-28 12:17:40,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 361 flow [2023-01-28 12:17:40,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:17:40,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:17:40,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-01-28 12:17:40,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487959442332065 [2023-01-28 12:17:40,460 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-01-28 12:17:40,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-01-28 12:17:40,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:40,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-01-28 12:17:40,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 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 12:17:40,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 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 12:17:40,462 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 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 12:17:40,462 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 217 flow. Second operand 3 states and 433 transitions. [2023-01-28 12:17:40,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 361 flow [2023-01-28 12:17:40,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 352 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 12:17:40,464 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 196 flow [2023-01-28 12:17:40,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2023-01-28 12:17:40,464 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2023-01-28 12:17:40,465 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 196 flow [2023-01-28 12:17:40,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 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 12:17:40,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:40,465 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:40,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 12:17:40,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:40,670 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 12:17:40,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:40,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1317669106, now seen corresponding path program 1 times [2023-01-28 12:17:40,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:40,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950863113] [2023-01-28 12:17:40,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:40,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:40,689 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 12:17:40,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315928538] [2023-01-28 12:17:40,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:40,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:40,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:40,690 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:17:40,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 12:17:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:41,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-28 12:17:41,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:41,150 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:41,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:17:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:41,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:17:41,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950863113] [2023-01-28 12:17:41,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 12:17:41,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315928538] [2023-01-28 12:17:41,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315928538] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:17:41,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-28 12:17:41,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-01-28 12:17:41,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920469570] [2023-01-28 12:17:41,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-28 12:17:41,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 12:17:41,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:17:41,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 12:17:41,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-01-28 12:17:41,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 263 [2023-01-28 12:17:41,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 196 flow. Second operand has 12 states, 12 states have (on average 121.58333333333333) internal successors, (1459), 12 states have internal predecessors, (1459), 0 states have call successors, (0), 0 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 12:17:41,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:17:41,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 263 [2023-01-28 12:17:41,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:17:42,434 INFO L130 PetriNetUnfolder]: 650/1323 cut-off events. [2023-01-28 12:17:42,434 INFO L131 PetriNetUnfolder]: For 876/876 co-relation queries the response was YES. [2023-01-28 12:17:42,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3422 conditions, 1323 events. 650/1323 cut-off events. For 876/876 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4542 event pairs, 118 based on Foata normal form. 20/1343 useless extension candidates. Maximal degree in co-relation 3403. Up to 269 conditions per place. [2023-01-28 12:17:42,440 INFO L137 encePairwiseOnDemand]: 258/263 looper letters, 104 selfloop transitions, 11 changer transitions 7/128 dead transitions. [2023-01-28 12:17:42,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 128 transitions, 752 flow [2023-01-28 12:17:42,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 12:17:42,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 12:17:42,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1283 transitions. [2023-01-28 12:17:42,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878326996197719 [2023-01-28 12:17:42,442 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1283 transitions. [2023-01-28 12:17:42,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1283 transitions. [2023-01-28 12:17:42,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:17:42,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1283 transitions. [2023-01-28 12:17:42,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 128.3) internal successors, (1283), 10 states have internal predecessors, (1283), 0 states have call successors, (0), 0 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 12:17:42,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 263.0) internal successors, (2893), 11 states have internal predecessors, (2893), 0 states have call successors, (0), 0 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 12:17:42,447 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 263.0) internal successors, (2893), 11 states have internal predecessors, (2893), 0 states have call successors, (0), 0 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 12:17:42,448 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 196 flow. Second operand 10 states and 1283 transitions. [2023-01-28 12:17:42,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 128 transitions, 752 flow [2023-01-28 12:17:42,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 128 transitions, 732 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-01-28 12:17:42,451 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 247 flow [2023-01-28 12:17:42,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=247, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2023-01-28 12:17:42,451 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2023-01-28 12:17:42,451 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 247 flow [2023-01-28 12:17:42,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 121.58333333333333) internal successors, (1459), 12 states have internal predecessors, (1459), 0 states have call successors, (0), 0 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 12:17:42,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:17:42,452 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:17:42,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 12:17:42,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:42,658 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-01-28 12:17:42,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:17:42,658 INFO L85 PathProgramCache]: Analyzing trace with hash 100212339, now seen corresponding path program 1 times [2023-01-28 12:17:42,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:17:42,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436368628] [2023-01-28 12:17:42,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:42,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:17:42,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 12:17:42,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823274965] [2023-01-28 12:17:42,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:17:42,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:17:42,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:17:42,674 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:17:42,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 12:17:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:17:43,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 67 conjunts are in the unsatisfiable core [2023-01-28 12:17:43,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:17:43,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 12:17:43,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 12 [2023-01-28 12:17:43,120 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-28 12:17:43,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-01-28 12:17:43,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-01-28 12:17:43,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-01-28 12:17:43,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-01-28 12:17:43,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-01-28 12:17:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:17:43,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:18:13,247 WARN L222 SmtUtils]: Spent 19.81s on a formula simplification. DAG size of input: 123 DAG size of output: 84 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:18:30,908 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~buffer_size~0 4294967296))) (let ((.cse1 (mod c_~next~0 4294967296)) (.cse10 (mod (+ c_~first~0 1) 4294967296)) (.cse8 (mod (mod (mod (+ c_~next~0 1) 4294967296) .cse0) 4294967296))) (or (<= .cse0 .cse1) (= (mod c_~send~0 256) 0) (let ((.cse6 (<= .cse10 2147483647)) (.cse7 (+ |c_~#buffer~0.offset| .cse10 (- 4294967296))) (.cse2 (+ .cse1 |c_~#buffer~0.offset|)) (.cse4 (+ |c_~#buffer~0.offset| .cse10)) (.cse5 (< 2147483647 .cse10))) (and (or (let ((.cse3 (+ |c_~#buffer~0.offset| .cse8))) (and (or (forall ((v_ArrVal_630 Int) (v_ArrVal_628 (Array Int Int))) (= (select (store (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_628) |c_~#buffer~0.base|) .cse2 v_ArrVal_630) .cse3 1) .cse4) 1)) .cse5) (or .cse6 (forall ((v_ArrVal_630 Int) (v_ArrVal_628 (Array Int Int))) (= (select (store (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_628) |c_~#buffer~0.base|) .cse2 v_ArrVal_630) .cse3 1) .cse7) 1))))) (< 2147483647 .cse8)) (or (<= .cse8 2147483647) (let ((.cse9 (+ |c_~#buffer~0.offset| .cse8 (- 4294967296)))) (and (or .cse6 (forall ((v_ArrVal_630 Int) (v_ArrVal_628 (Array Int Int))) (= (select (store (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_628) |c_~#buffer~0.base|) (+ .cse1 |c_~#buffer~0.offset| (- 4294967296)) v_ArrVal_630) .cse9 1) .cse7) 1))) (or (forall ((v_ArrVal_630 Int) (v_ArrVal_628 (Array Int Int))) (= 1 (select (store (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_628) |c_~#buffer~0.base|) .cse2 v_ArrVal_630) .cse9 1) .cse4))) .cse5)))))) (<= .cse0 .cse10) (<= .cse8 0)))) is different from false [2023-01-28 12:18:31,941 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:18:31,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:18:31,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436368628] [2023-01-28 12:18:31,942 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 12:18:31,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823274965] [2023-01-28 12:18:31,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823274965] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:18:31,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-28 12:18:31,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2023-01-28 12:18:31,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749717902] [2023-01-28 12:18:31,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-28 12:18:31,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 12:18:31,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:18:31,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 12:18:31,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=697, Unknown=1, NotChecked=54, Total=870 [2023-01-28 12:18:31,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 263 [2023-01-28 12:18:31,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 48 transitions, 247 flow. Second operand has 30 states, 30 states have (on average 75.13333333333334) internal successors, (2254), 30 states have internal predecessors, (2254), 0 states have call successors, (0), 0 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 12:18:31,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:18:31,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 263 [2023-01-28 12:18:31,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:18:55,986 WARN L222 SmtUtils]: Spent 20.25s on a formula simplification. DAG size of input: 204 DAG size of output: 107 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:19:21,805 WARN L222 SmtUtils]: Spent 15.97s on a formula simplification. DAG size of input: 162 DAG size of output: 141 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:19:47,961 WARN L222 SmtUtils]: Spent 25.08s on a formula simplification. DAG size of input: 231 DAG size of output: 134 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:20:10,177 WARN L222 SmtUtils]: Spent 21.25s on a formula simplification. DAG size of input: 219 DAG size of output: 122 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:20:36,312 WARN L222 SmtUtils]: Spent 24.58s on a formula simplification. DAG size of input: 250 DAG size of output: 157 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:21:21,894 WARN L222 SmtUtils]: Spent 43.44s on a formula simplification. DAG size of input: 280 DAG size of output: 239 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:21:29,456 WARN L222 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 164 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:21:46,133 WARN L222 SmtUtils]: Spent 13.46s on a formula simplification. DAG size of input: 116 DAG size of output: 114 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:22:13,670 WARN L222 SmtUtils]: Spent 16.92s on a formula simplification. DAG size of input: 113 DAG size of output: 111 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:23:02,049 WARN L222 SmtUtils]: Spent 46.71s on a formula simplification. DAG size of input: 278 DAG size of output: 237 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:23:11,335 WARN L222 SmtUtils]: Spent 6.40s on a formula simplification that was a NOOP. DAG size: 145 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:23:42,157 WARN L222 SmtUtils]: Spent 21.26s on a formula simplification. DAG size of input: 208 DAG size of output: 187 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:24:20,321 WARN L222 SmtUtils]: Spent 34.74s on a formula simplification. DAG size of input: 276 DAG size of output: 183 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:24:50,197 WARN L222 SmtUtils]: Spent 19.93s on a formula simplification. DAG size of input: 189 DAG size of output: 168 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:25:45,333 WARN L222 SmtUtils]: Spent 53.15s on a formula simplification. DAG size of input: 212 DAG size of output: 157 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:26:10,134 WARN L222 SmtUtils]: Spent 20.38s on a formula simplification. DAG size of input: 177 DAG size of output: 156 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:27:08,559 WARN L222 SmtUtils]: Spent 54.83s on a formula simplification. DAG size of input: 209 DAG size of output: 154 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:27:25,300 WARN L222 SmtUtils]: Spent 7.46s on a formula simplification that was a NOOP. DAG size: 190 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:28:00,039 WARN L222 SmtUtils]: Spent 33.13s on a formula simplification. DAG size of input: 181 DAG size of output: 123 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:28:34,601 WARN L222 SmtUtils]: Spent 25.71s on a formula simplification. DAG size of input: 140 DAG size of output: 138 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:28:58,153 WARN L222 SmtUtils]: Spent 18.46s on a formula simplification. DAG size of input: 128 DAG size of output: 126 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:29:50,798 WARN L222 SmtUtils]: Spent 51.31s on a formula simplification. DAG size of input: 210 DAG size of output: 155 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:30:30,064 WARN L222 SmtUtils]: Spent 38.23s on a formula simplification. DAG size of input: 182 DAG size of output: 124 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:30:59,443 WARN L222 SmtUtils]: Spent 25.61s on a formula simplification. DAG size of input: 234 DAG size of output: 213 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 12:31:21,755 WARN L222 SmtUtils]: Spent 20.64s on a formula simplification. DAG size of input: 134 DAG size of output: 132 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-01-28 12:32:10,748 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 12:32:10,748 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 12:32:10,757 WARN L238 SmtUtils]: Removed 10 from assertion stack [2023-01-28 12:32:10,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-01-28 12:32:10,759 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-01-28 12:32:10,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 12:32:10,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-28 12:32:10,959 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 218 for 46986ms.. [2023-01-28 12:32:10,961 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 8 remaining) [2023-01-28 12:32:10,961 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 8 remaining) [2023-01-28 12:32:10,961 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-01-28 12:32:10,962 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-01-28 12:32:10,962 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-01-28 12:32:10,962 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2023-01-28 12:32:10,962 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2023-01-28 12:32:10,962 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:32:10,966 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 12:32:10,966 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 12:32:10,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:32:10 BasicIcfg [2023-01-28 12:32:10,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 12:32:10,968 INFO L158 Benchmark]: Toolchain (without parser) took 879552.92ms. Allocated memory was 417.3MB in the beginning and 723.5MB in the end (delta: 306.2MB). Free memory was 366.6MB in the beginning and 366.3MB in the end (delta: 278.2kB). Peak memory consumption was 309.0MB. Max. memory is 16.0GB. [2023-01-28 12:32:10,968 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 12:32:10,969 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.53ms. Allocated memory is still 417.3MB. Free memory was 366.3MB in the beginning and 346.0MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 12:32:10,969 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.30ms. Allocated memory is still 417.3MB. Free memory was 346.0MB in the beginning and 393.6MB in the end (delta: -47.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2023-01-28 12:32:10,969 INFO L158 Benchmark]: Boogie Preprocessor took 28.37ms. Allocated memory is still 417.3MB. Free memory was 393.6MB in the beginning and 391.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 12:32:10,969 INFO L158 Benchmark]: RCFGBuilder took 393.09ms. Allocated memory is still 417.3MB. Free memory was 391.7MB in the beginning and 373.6MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 12:32:10,969 INFO L158 Benchmark]: TraceAbstraction took 878716.94ms. Allocated memory was 417.3MB in the beginning and 723.5MB in the end (delta: 306.2MB). Free memory was 372.9MB in the beginning and 366.3MB in the end (delta: 6.6MB). Peak memory consumption was 313.1MB. Max. memory is 16.0GB. [2023-01-28 12:32:10,970 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 213.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 355.53ms. Allocated memory is still 417.3MB. Free memory was 366.3MB in the beginning and 346.0MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 54.30ms. Allocated memory is still 417.3MB. Free memory was 346.0MB in the beginning and 393.6MB in the end (delta: -47.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.37ms. Allocated memory is still 417.3MB. Free memory was 393.6MB in the beginning and 391.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 393.09ms. Allocated memory is still 417.3MB. Free memory was 391.7MB in the beginning and 373.6MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 878716.94ms. Allocated memory was 417.3MB in the beginning and 723.5MB in the end (delta: 306.2MB). Free memory was 372.9MB in the beginning and 366.3MB in the end (delta: 6.6MB). Peak memory consumption was 313.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 133 PlacesBefore, 38 PlacesAfterwards, 137 TransitionsBefore, 38 TransitionsAfterwards, 4498 CoEnabledTransitionPairs, 7 FixpointIterations, 42 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 115 TotalNumberOfCompositions, 9988 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5385, independent: 5083, independent conditional: 0, independent unconditional: 5083, dependent: 302, dependent conditional: 0, dependent unconditional: 302, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2544, independent: 2499, independent conditional: 0, independent unconditional: 2499, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5385, independent: 2584, independent conditional: 0, independent unconditional: 2584, dependent: 257, dependent conditional: 0, dependent unconditional: 257, unknown: 2544, unknown conditional: 0, unknown unconditional: 2544] , Statistics on independence cache: Total cache size (in pairs): 195, Positive cache size: 175, Positive conditional cache size: 0, Positive unconditional cache size: 175, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 749]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 218 for 46986ms.. - TimeoutResultAtElement [Line: 764]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 218 for 46986ms.. - TimeoutResultAtElement [Line: 763]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 218 for 46986ms.. - TimeoutResultAtElement [Line: 714]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 218 for 46986ms.. - TimeoutResultAtElement [Line: 731]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 218 for 46986ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 212 locations, 8 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: 878.6s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 821.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 942 SdHoareTripleChecker+Valid, 35.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 942 mSDsluCounter, 76 SdHoareTripleChecker+Invalid, 34.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 415 IncrementalHoareTripleChecker+Unchecked, 69 mSDsCounter, 96 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3154 IncrementalHoareTripleChecker+Invalid, 3665 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 96 mSolverCounterUnsat, 7 mSDtfsCounter, 3154 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 303 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1633 ImplicationChecksByTransitivity, 768.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247occurred in iteration=9, InterpolantAutomatonStates: 41, 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: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 50.2s InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 249 ConstructedInterpolants, 36 QuantifiedInterpolants, 11865 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1941 ConjunctsInSsa, 154 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 8/56 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