/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-18 22:07:45,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 22:07:45,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 22:07:45,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 22:07:45,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 22:07:45,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 22:07:45,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 22:07:45,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 22:07:45,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 22:07:45,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 22:07:45,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 22:07:45,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 22:07:45,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 22:07:45,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 22:07:45,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 22:07:45,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 22:07:45,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 22:07:45,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 22:07:45,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 22:07:45,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 22:07:45,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 22:07:45,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 22:07:45,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 22:07:45,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 22:07:45,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 22:07:45,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 22:07:45,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 22:07:45,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 22:07:45,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 22:07:45,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 22:07:45,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 22:07:45,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 22:07:45,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 22:07:45,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 22:07:45,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 22:07:45,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 22:07:45,164 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-NoLbe.epf [2022-01-18 22:07:45,184 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 22:07:45,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 22:07:45,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 22:07:45,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 22:07:45,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 22:07:45,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 22:07:45,186 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 22:07:45,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 22:07:45,186 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 22:07:45,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 22:07:45,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 22:07:45,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 22:07:45,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 22:07:45,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 22:07:45,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 22:07:45,187 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 22:07:45,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 22:07:45,188 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 22:07:45,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 22:07:45,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 22:07:45,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 22:07:45,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 22:07:45,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 22:07:45,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:07:45,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 22:07:45,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 22:07:45,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 22:07:45,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 22:07:45,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 22:07:45,190 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 22:07:45,190 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-18 22:07:45,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 22:07:45,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 22:07:45,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 22:07:45,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 22:07:45,396 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 22:07:45,399 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 22:07:45,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2022-01-18 22:07:45,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51aebd1f7/992d5d59b82c4291a76925935e45a02d/FLAG07ed19ab4 [2022-01-18 22:07:45,938 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 22:07:45,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2022-01-18 22:07:45,960 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51aebd1f7/992d5d59b82c4291a76925935e45a02d/FLAG07ed19ab4 [2022-01-18 22:07:46,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51aebd1f7/992d5d59b82c4291a76925935e45a02d [2022-01-18 22:07:46,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 22:07:46,430 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 22:07:46,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 22:07:46,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 22:07:46,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 22:07:46,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:07:46" (1/1) ... [2022-01-18 22:07:46,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71c69b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:07:46, skipping insertion in model container [2022-01-18 22:07:46,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:07:46" (1/1) ... [2022-01-18 22:07:46,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 22:07:46,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 22:07:46,620 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-18 22:07:46,709 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[30997,31010] [2022-01-18 22:07:46,716 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[31682,31695] [2022-01-18 22:07:46,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:07:46,729 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 22:07:46,753 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-18 22:07:46,781 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[30997,31010] [2022-01-18 22:07:46,783 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i[31682,31695] [2022-01-18 22:07:46,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:07:46,823 INFO L208 MainTranslator]: Completed translation [2022-01-18 22:07:46,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:07:46 WrapperNode [2022-01-18 22:07:46,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 22:07:46,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 22:07:46,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 22:07:46,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 22:07:46,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:07:46" (1/1) ... [2022-01-18 22:07:46,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:07:46" (1/1) ... [2022-01-18 22:07:46,877 INFO L137 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2022-01-18 22:07:46,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 22:07:46,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 22:07:46,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 22:07:46,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 22:07:46,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:07:46" (1/1) ... [2022-01-18 22:07:46,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:07:46" (1/1) ... [2022-01-18 22:07:46,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:07:46" (1/1) ... [2022-01-18 22:07:46,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:07:46" (1/1) ... [2022-01-18 22:07:46,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:07:46" (1/1) ... [2022-01-18 22:07:46,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:07:46" (1/1) ... [2022-01-18 22:07:46,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:07:46" (1/1) ... [2022-01-18 22:07:46,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 22:07:46,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 22:07:46,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 22:07:46,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 22:07:46,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:07:46" (1/1) ... [2022-01-18 22:07:46,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:07:46,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 22:07:46,954 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) [2022-01-18 22:07:46,960 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 [2022-01-18 22:07:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 22:07:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-01-18 22:07:46,980 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-01-18 22:07:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-01-18 22:07:46,980 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-01-18 22:07:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 22:07:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 22:07:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 22:07:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 22:07:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 22:07:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 22:07:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 22:07:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 22:07:46,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 22:07:46,983 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 22:07:47,098 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 22:07:47,099 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 22:07:47,240 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 22:07:47,245 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 22:07:47,246 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 22:07:47,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:07:47 BoogieIcfgContainer [2022-01-18 22:07:47,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 22:07:47,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 22:07:47,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 22:07:47,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 22:07:47,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 10:07:46" (1/3) ... [2022-01-18 22:07:47,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262de48e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:07:47, skipping insertion in model container [2022-01-18 22:07:47,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:07:46" (2/3) ... [2022-01-18 22:07:47,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262de48e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:07:47, skipping insertion in model container [2022-01-18 22:07:47,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:07:47" (3/3) ... [2022-01-18 22:07:47,254 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2022-01-18 22:07:47,257 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 22:07:47,257 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-18 22:07:47,258 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 22:07:47,281 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,281 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,281 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,281 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,282 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,282 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,282 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,282 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,282 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,283 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,283 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,283 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,283 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,283 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,284 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,284 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,284 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,284 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,284 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,285 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,285 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,285 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,286 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,286 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,286 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,286 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,287 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,287 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,287 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,287 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,288 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,288 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,288 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,288 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,288 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,288 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,289 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,289 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,289 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,289 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,289 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,289 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,290 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,290 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,290 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,290 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,290 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,290 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,291 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,291 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,291 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,292 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,292 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,292 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,292 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,292 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,295 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,295 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,295 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,295 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,296 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,296 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,298 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,298 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,298 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,298 WARN L322 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,298 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,298 WARN L322 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:07:47,301 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 22:07:47,339 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 22:07:47,344 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 22:07:47,344 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-18 22:07:47,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 180 flow [2022-01-18 22:07:47,380 INFO L129 PetriNetUnfolder]: 6/80 cut-off events. [2022-01-18 22:07:47,381 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-18 22:07:47,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 6/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-01-18 22:07:47,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 82 transitions, 180 flow [2022-01-18 22:07:47,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 70 transitions, 149 flow [2022-01-18 22:07:47,398 INFO L129 PetriNetUnfolder]: 3/49 cut-off events. [2022-01-18 22:07:47,399 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:07:47,399 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:07:47,399 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:07:47,400 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-01-18 22:07:47,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:07:47,404 INFO L85 PathProgramCache]: Analyzing trace with hash -319828652, now seen corresponding path program 1 times [2022-01-18 22:07:47,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:07:47,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931286186] [2022-01-18 22:07:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:07:47,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:07:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:07:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:07:47,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:07:47,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931286186] [2022-01-18 22:07:47,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931286186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:07:47,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:07:47,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 22:07:47,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056883998] [2022-01-18 22:07:47,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:07:47,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 22:07:47,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:07:47,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 22:07:47,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 22:07:47,660 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2022-01-18 22:07:47,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:47,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:07:47,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2022-01-18 22:07:47,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:07:47,728 INFO L129 PetriNetUnfolder]: 16/145 cut-off events. [2022-01-18 22:07:47,729 INFO L130 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-01-18 22:07:47,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 145 events. 16/145 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 475 event pairs, 4 based on Foata normal form. 19/152 useless extension candidates. Maximal degree in co-relation 138. Up to 24 conditions per place. [2022-01-18 22:07:47,731 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 11 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2022-01-18 22:07:47,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 70 transitions, 180 flow [2022-01-18 22:07:47,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 22:07:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-18 22:07:47,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2022-01-18 22:07:47,750 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9065040650406504 [2022-01-18 22:07:47,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2022-01-18 22:07:47,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2022-01-18 22:07:47,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:07:47,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2022-01-18 22:07:47,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:47,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:47,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:47,766 INFO L186 Difference]: Start difference. First operand has 71 places, 70 transitions, 149 flow. Second operand 3 states and 223 transitions. [2022-01-18 22:07:47,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 70 transitions, 180 flow [2022-01-18 22:07:47,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 173 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-18 22:07:47,772 INFO L242 Difference]: Finished difference. Result has 72 places, 67 transitions, 156 flow [2022-01-18 22:07:47,773 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2022-01-18 22:07:47,776 INFO L334 CegarLoopForPetriNet]: 71 programPoint places, 1 predicate places. [2022-01-18 22:07:47,776 INFO L470 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 156 flow [2022-01-18 22:07:47,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:47,777 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:07:47,777 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:07:47,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 22:07:47,777 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-01-18 22:07:47,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:07:47,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1668992913, now seen corresponding path program 1 times [2022-01-18 22:07:47,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:07:47,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570330351] [2022-01-18 22:07:47,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:07:47,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:07:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:07:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:07:47,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:07:47,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570330351] [2022-01-18 22:07:47,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570330351] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:07:47,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:07:47,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 22:07:47,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99415573] [2022-01-18 22:07:47,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:07:47,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 22:07:47,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:07:47,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 22:07:47,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 22:07:47,854 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2022-01-18 22:07:47,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:47,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:07:47,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2022-01-18 22:07:47,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:07:47,902 INFO L129 PetriNetUnfolder]: 10/127 cut-off events. [2022-01-18 22:07:47,903 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-01-18 22:07:47,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 127 events. 10/127 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 377 event pairs, 5 based on Foata normal form. 7/129 useless extension candidates. Maximal degree in co-relation 82. Up to 22 conditions per place. [2022-01-18 22:07:47,904 INFO L132 encePairwiseOnDemand]: 78/82 looper letters, 9 selfloop transitions, 2 changer transitions 1/68 dead transitions. [2022-01-18 22:07:47,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 183 flow [2022-01-18 22:07:47,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 22:07:47,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-18 22:07:47,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2022-01-18 22:07:47,911 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8739837398373984 [2022-01-18 22:07:47,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2022-01-18 22:07:47,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2022-01-18 22:07:47,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:07:47,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2022-01-18 22:07:47,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:47,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:47,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:47,915 INFO L186 Difference]: Start difference. First operand has 72 places, 67 transitions, 156 flow. Second operand 3 states and 215 transitions. [2022-01-18 22:07:47,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 183 flow [2022-01-18 22:07:47,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 68 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-18 22:07:47,918 INFO L242 Difference]: Finished difference. Result has 73 places, 67 transitions, 160 flow [2022-01-18 22:07:47,918 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2022-01-18 22:07:47,918 INFO L334 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places. [2022-01-18 22:07:47,919 INFO L470 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 160 flow [2022-01-18 22:07:47,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:47,922 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:07:47,922 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:07:47,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 22:07:47,923 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-01-18 22:07:47,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:07:47,924 INFO L85 PathProgramCache]: Analyzing trace with hash -814098879, now seen corresponding path program 1 times [2022-01-18 22:07:47,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:07:47,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472112379] [2022-01-18 22:07:47,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:07:47,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:07:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:07:48,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:07:48,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:07:48,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472112379] [2022-01-18 22:07:48,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472112379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:07:48,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:07:48,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 22:07:48,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180654100] [2022-01-18 22:07:48,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:07:48,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 22:07:48,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:07:48,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 22:07:48,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 22:07:48,062 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 82 [2022-01-18 22:07:48,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:48,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:07:48,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 82 [2022-01-18 22:07:48,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:07:48,264 INFO L129 PetriNetUnfolder]: 83/326 cut-off events. [2022-01-18 22:07:48,264 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-01-18 22:07:48,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 326 events. 83/326 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1521 event pairs, 9 based on Foata normal form. 0/307 useless extension candidates. Maximal degree in co-relation 465. Up to 48 conditions per place. [2022-01-18 22:07:48,267 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 26 selfloop transitions, 13 changer transitions 19/108 dead transitions. [2022-01-18 22:07:48,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 108 transitions, 363 flow [2022-01-18 22:07:48,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:07:48,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:07:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 662 transitions. [2022-01-18 22:07:48,271 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8073170731707318 [2022-01-18 22:07:48,271 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 662 transitions. [2022-01-18 22:07:48,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 662 transitions. [2022-01-18 22:07:48,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:07:48,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 662 transitions. [2022-01-18 22:07:48,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 66.2) internal successors, (662), 10 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:48,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:48,277 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:48,278 INFO L186 Difference]: Start difference. First operand has 73 places, 67 transitions, 160 flow. Second operand 10 states and 662 transitions. [2022-01-18 22:07:48,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 108 transitions, 363 flow [2022-01-18 22:07:48,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 108 transitions, 361 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-18 22:07:48,281 INFO L242 Difference]: Finished difference. Result has 90 places, 79 transitions, 266 flow [2022-01-18 22:07:48,281 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=266, PETRI_PLACES=90, PETRI_TRANSITIONS=79} [2022-01-18 22:07:48,282 INFO L334 CegarLoopForPetriNet]: 71 programPoint places, 19 predicate places. [2022-01-18 22:07:48,282 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 79 transitions, 266 flow [2022-01-18 22:07:48,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:48,282 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:07:48,283 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:07:48,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 22:07:48,283 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION (and 2 more)] === [2022-01-18 22:07:48,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:07:48,283 INFO L85 PathProgramCache]: Analyzing trace with hash 520676303, now seen corresponding path program 2 times [2022-01-18 22:07:48,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:07:48,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364090183] [2022-01-18 22:07:48,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:07:48,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:07:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:07:48,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:07:48,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:07:48,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364090183] [2022-01-18 22:07:48,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364090183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:07:48,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:07:48,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 22:07:48,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28578600] [2022-01-18 22:07:48,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:07:48,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 22:07:48,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:07:48,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 22:07:48,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 22:07:48,386 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 82 [2022-01-18 22:07:48,387 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 79 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:48,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:07:48,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 82 [2022-01-18 22:07:48,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:07:48,534 INFO L129 PetriNetUnfolder]: 93/310 cut-off events. [2022-01-18 22:07:48,534 INFO L130 PetriNetUnfolder]: For 205/218 co-relation queries the response was YES. [2022-01-18 22:07:48,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 310 events. 93/310 cut-off events. For 205/218 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1329 event pairs, 9 based on Foata normal form. 7/308 useless extension candidates. Maximal degree in co-relation 702. Up to 55 conditions per place. [2022-01-18 22:07:48,538 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2022-01-18 22:07:48,538 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 114 transitions, 523 flow [2022-01-18 22:07:48,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:07:48,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:07:48,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 656 transitions. [2022-01-18 22:07:48,541 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-01-18 22:07:48,541 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 656 transitions. [2022-01-18 22:07:48,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 656 transitions. [2022-01-18 22:07:48,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:07:48,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 656 transitions. [2022-01-18 22:07:48,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.6) internal successors, (656), 10 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:48,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:48,549 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:48,549 INFO L186 Difference]: Start difference. First operand has 90 places, 79 transitions, 266 flow. Second operand 10 states and 656 transitions. [2022-01-18 22:07:48,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 114 transitions, 523 flow [2022-01-18 22:07:48,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 114 transitions, 493 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-01-18 22:07:48,558 INFO L242 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2022-01-18 22:07:48,558 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2022-01-18 22:07:48,559 INFO L334 CegarLoopForPetriNet]: 71 programPoint places, 19 predicate places. [2022-01-18 22:07:48,559 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2022-01-18 22:07:48,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:07:48,562 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-01-18 22:07:48,563 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-01-18 22:07:48,563 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 6 remaining) [2022-01-18 22:07:48,564 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 6 remaining) [2022-01-18 22:07:48,565 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-01-18 22:07:48,565 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-01-18 22:07:48,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 22:07:48,568 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-01-18 22:07:48,571 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 22:07:48,571 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 22:07:48,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 10:07:48 BasicIcfg [2022-01-18 22:07:48,574 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 22:07:48,575 INFO L158 Benchmark]: Toolchain (without parser) took 2145.13ms. Allocated memory was 360.7MB in the beginning and 434.1MB in the end (delta: 73.4MB). Free memory was 305.8MB in the beginning and 271.8MB in the end (delta: 33.9MB). Peak memory consumption was 106.9MB. Max. memory is 16.0GB. [2022-01-18 22:07:48,575 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 360.7MB. Free memory is still 323.6MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 22:07:48,577 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.55ms. Allocated memory was 360.7MB in the beginning and 434.1MB in the end (delta: 73.4MB). Free memory was 305.6MB in the beginning and 396.2MB in the end (delta: -90.6MB). Peak memory consumption was 11.5MB. Max. memory is 16.0GB. [2022-01-18 22:07:48,577 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.68ms. Allocated memory is still 434.1MB. Free memory was 396.2MB in the beginning and 394.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 22:07:48,578 INFO L158 Benchmark]: Boogie Preprocessor took 32.90ms. Allocated memory is still 434.1MB. Free memory was 394.8MB in the beginning and 393.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:07:48,578 INFO L158 Benchmark]: RCFGBuilder took 336.61ms. Allocated memory is still 434.1MB. Free memory was 393.4MB in the beginning and 380.2MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 22:07:48,578 INFO L158 Benchmark]: TraceAbstraction took 1325.48ms. Allocated memory is still 434.1MB. Free memory was 379.5MB in the beginning and 271.8MB in the end (delta: 107.6MB). Peak memory consumption was 107.0MB. Max. memory is 16.0GB. [2022-01-18 22:07:48,580 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 360.7MB. Free memory is still 323.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 391.55ms. Allocated memory was 360.7MB in the beginning and 434.1MB in the end (delta: 73.4MB). Free memory was 305.6MB in the beginning and 396.2MB in the end (delta: -90.6MB). Peak memory consumption was 11.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.68ms. Allocated memory is still 434.1MB. Free memory was 396.2MB in the beginning and 394.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 32.90ms. Allocated memory is still 434.1MB. Free memory was 394.8MB in the beginning and 393.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 336.61ms. Allocated memory is still 434.1MB. Free memory was 393.4MB in the beginning and 380.2MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 1325.48ms. Allocated memory is still 434.1MB. Free memory was 379.5MB in the beginning and 271.8MB in the end (delta: 107.6MB). Peak memory consumption was 107.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 753]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 725]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 111 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 83 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 243 IncrementalHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 61 mSDtfsCounter, 243 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=266occurred in iteration=3, InterpolantAutomatonStates: 26, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 236 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-18 22:07:48,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...