/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-ext/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-18 22:16:42,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 22:16:42,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 22:16:42,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 22:16:42,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 22:16:42,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 22:16:42,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 22:16:42,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 22:16:42,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 22:16:42,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 22:16:42,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 22:16:42,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 22:16:42,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 22:16:42,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 22:16:42,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 22:16:42,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 22:16:42,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 22:16:42,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 22:16:42,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 22:16:42,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 22:16:42,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 22:16:42,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 22:16:42,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 22:16:42,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 22:16:42,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 22:16:42,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 22:16:42,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 22:16:42,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 22:16:42,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 22:16:42,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 22:16:42,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 22:16:42,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 22:16:42,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 22:16:42,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 22:16:42,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 22:16:42,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 22:16:42,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 22:16:42,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 22:16:42,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 22:16:42,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 22:16:42,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 22:16:42,775 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 22:16:42,792 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 22:16:42,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 22:16:42,793 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 22:16:42,794 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 22:16:42,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 22:16:42,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 22:16:42,794 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 22:16:42,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 22:16:42,794 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 22:16:42,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 22:16:42,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 22:16:42,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 22:16:42,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 22:16:42,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 22:16:42,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 22:16:42,795 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 22:16:42,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 22:16:42,796 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 22:16:42,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 22:16:42,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 22:16:42,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 22:16:42,796 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 22:16:42,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 22:16:42,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:16:42,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 22:16:42,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 22:16:42,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 22:16:42,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 22:16:42,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 22:16:42,797 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 22:16:42,797 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-18 22:16:42,797 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 22:16:42,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 22:16:42,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 22:16:42,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 22:16:42,962 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 22:16:42,963 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 22:16:42,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2022-01-18 22:16:43,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7214b1871/9cd6b71303034a23998910783c005d1f/FLAG7ee25a910 [2022-01-18 22:16:43,386 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 22:16:43,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2022-01-18 22:16:43,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7214b1871/9cd6b71303034a23998910783c005d1f/FLAG7ee25a910 [2022-01-18 22:16:43,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7214b1871/9cd6b71303034a23998910783c005d1f [2022-01-18 22:16:43,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 22:16:43,407 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 22:16:43,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 22:16:43,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 22:16:43,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 22:16:43,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:16:43" (1/1) ... [2022-01-18 22:16:43,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b9fc71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:16:43, skipping insertion in model container [2022-01-18 22:16:43,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:16:43" (1/1) ... [2022-01-18 22:16:43,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 22:16:43,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 22:16:43,673 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-ext/23_lu-fig2.fixed.i[30382,30395] [2022-01-18 22:16:43,678 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-ext/23_lu-fig2.fixed.i[30752,30765] [2022-01-18 22:16:43,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:16:43,690 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 22:16:43,737 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-ext/23_lu-fig2.fixed.i[30382,30395] [2022-01-18 22:16:43,741 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-ext/23_lu-fig2.fixed.i[30752,30765] [2022-01-18 22:16:43,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:16:43,777 INFO L208 MainTranslator]: Completed translation [2022-01-18 22:16:43,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:16:43 WrapperNode [2022-01-18 22:16:43,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 22:16:43,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 22:16:43,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 22:16:43,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 22:16:43,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:16:43" (1/1) ... [2022-01-18 22:16:43,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:16:43" (1/1) ... [2022-01-18 22:16:43,821 INFO L137 Inliner]: procedures = 172, calls = 20, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 88 [2022-01-18 22:16:43,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 22:16:43,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 22:16:43,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 22:16:43,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 22:16:43,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:16:43" (1/1) ... [2022-01-18 22:16:43,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:16:43" (1/1) ... [2022-01-18 22:16:43,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:16:43" (1/1) ... [2022-01-18 22:16:43,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:16:43" (1/1) ... [2022-01-18 22:16:43,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:16:43" (1/1) ... [2022-01-18 22:16:43,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:16:43" (1/1) ... [2022-01-18 22:16:43,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:16:43" (1/1) ... [2022-01-18 22:16:43,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 22:16:43,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 22:16:43,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 22:16:43,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 22:16:43,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:16:43" (1/1) ... [2022-01-18 22:16:43,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:16:43,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 22:16:43,878 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 22:16:43,893 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 22:16:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-01-18 22:16:43,905 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-01-18 22:16:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 22:16:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 22:16:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 22:16:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 22:16:43,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 22:16:43,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 22:16:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 22:16:43,906 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 22:16:44,009 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 22:16:44,010 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 22:16:44,133 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 22:16:44,181 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 22:16:44,181 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-18 22:16:44,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:16:44 BoogieIcfgContainer [2022-01-18 22:16:44,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 22:16:44,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 22:16:44,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 22:16:44,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 22:16:44,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 10:16:43" (1/3) ... [2022-01-18 22:16:44,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b6d061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:16:44, skipping insertion in model container [2022-01-18 22:16:44,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:16:43" (2/3) ... [2022-01-18 22:16:44,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b6d061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:16:44, skipping insertion in model container [2022-01-18 22:16:44,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:16:44" (3/3) ... [2022-01-18 22:16:44,193 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2022-01-18 22:16:44,197 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 22:16:44,197 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-18 22:16:44,197 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 22:16:44,223 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,224 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,224 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,224 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,224 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,224 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,224 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,224 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,224 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~PR_CreateThread__RES~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,225 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~PR_CreateThread__RES~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,225 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,225 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,225 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,225 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,225 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~PR_CreateThread__RES~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,225 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,226 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,226 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~PR_CreateThread__RES~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,226 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,226 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,226 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~PR_CreateThread__RES~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,226 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,226 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,226 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~PR_CreateThread__RES~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,227 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,227 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,227 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,227 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,227 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,227 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,227 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,228 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,228 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,228 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,230 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,230 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,230 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,230 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,231 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~PR_CreateThread__RES~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,231 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,231 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,231 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,231 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:16:44,231 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 22:16:44,281 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 22:16:44,285 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 22:16:44,286 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 22:16:44,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 56 transitions, 117 flow [2022-01-18 22:16:44,333 INFO L129 PetriNetUnfolder]: 2/55 cut-off events. [2022-01-18 22:16:44,333 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:16:44,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 55 events. 2/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2022-01-18 22:16:44,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 56 transitions, 117 flow [2022-01-18 22:16:44,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 55 transitions, 113 flow [2022-01-18 22:16:44,351 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2022-01-18 22:16:44,351 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:16:44,351 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:16:44,352 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] [2022-01-18 22:16:44,352 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:16:44,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:16:44,358 INFO L85 PathProgramCache]: Analyzing trace with hash 33523167, now seen corresponding path program 1 times [2022-01-18 22:16:44,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:16:44,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381328534] [2022-01-18 22:16:44,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:16:44,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:16:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:16:44,541 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 22:16:44,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:16:44,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381328534] [2022-01-18 22:16:44,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381328534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:16:44,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:16:44,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 22:16:44,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258531951] [2022-01-18 22:16:44,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:16:44,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 22:16:44,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:16:44,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 22:16:44,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 22:16:44,568 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 56 [2022-01-18 22:16:44,575 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 22:16:44,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:16:44,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 56 [2022-01-18 22:16:44,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:16:44,615 INFO L129 PetriNetUnfolder]: 11/86 cut-off events. [2022-01-18 22:16:44,615 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-18 22:16:44,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 86 events. 11/86 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 7 based on Foata normal form. 2/83 useless extension candidates. Maximal degree in co-relation 92. Up to 18 conditions per place. [2022-01-18 22:16:44,617 INFO L132 encePairwiseOnDemand]: 51/56 looper letters, 9 selfloop transitions, 2 changer transitions 11/56 dead transitions. [2022-01-18 22:16:44,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 139 flow [2022-01-18 22:16:44,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 22:16:44,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-18 22:16:44,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2022-01-18 22:16:44,627 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8988095238095238 [2022-01-18 22:16:44,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2022-01-18 22:16:44,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2022-01-18 22:16:44,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:16:44,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2022-01-18 22:16:44,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 22:16:44,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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 22:16:44,634 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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 22:16:44,635 INFO L186 Difference]: Start difference. First operand has 57 places, 55 transitions, 113 flow. Second operand 3 states and 151 transitions. [2022-01-18 22:16:44,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 139 flow [2022-01-18 22:16:44,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-18 22:16:44,639 INFO L242 Difference]: Finished difference. Result has 57 places, 42 transitions, 90 flow [2022-01-18 22:16:44,640 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2022-01-18 22:16:44,643 INFO L334 CegarLoopForPetriNet]: 57 programPoint places, 0 predicate places. [2022-01-18 22:16:44,643 INFO L470 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 90 flow [2022-01-18 22:16:44,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 22:16:44,643 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:16:44,643 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] [2022-01-18 22:16:44,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 22:16:44,644 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:16:44,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:16:44,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2076482913, now seen corresponding path program 1 times [2022-01-18 22:16:44,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:16:44,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514560886] [2022-01-18 22:16:44,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:16:44,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:16:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:16:44,683 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 22:16:44,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:16:44,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514560886] [2022-01-18 22:16:44,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514560886] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:16:44,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:16:44,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 22:16:44,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835468367] [2022-01-18 22:16:44,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:16:44,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 22:16:44,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:16:44,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 22:16:44,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 22:16:44,686 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 56 [2022-01-18 22:16:44,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 22:16:44,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:16:44,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 56 [2022-01-18 22:16:44,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:16:44,711 INFO L129 PetriNetUnfolder]: 21/81 cut-off events. [2022-01-18 22:16:44,711 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-01-18 22:16:44,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 81 events. 21/81 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 122 event pairs, 8 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 111. Up to 30 conditions per place. [2022-01-18 22:16:44,712 INFO L132 encePairwiseOnDemand]: 52/56 looper letters, 9 selfloop transitions, 2 changer transitions 3/45 dead transitions. [2022-01-18 22:16:44,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 126 flow [2022-01-18 22:16:44,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 22:16:44,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-18 22:16:44,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2022-01-18 22:16:44,714 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2022-01-18 22:16:44,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 141 transitions. [2022-01-18 22:16:44,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 141 transitions. [2022-01-18 22:16:44,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:16:44,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 141 transitions. [2022-01-18 22:16:44,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 22:16:44,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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 22:16:44,716 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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 22:16:44,716 INFO L186 Difference]: Start difference. First operand has 57 places, 42 transitions, 90 flow. Second operand 3 states and 141 transitions. [2022-01-18 22:16:44,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 126 flow [2022-01-18 22:16:44,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-18 22:16:44,718 INFO L242 Difference]: Finished difference. Result has 48 places, 42 transitions, 98 flow [2022-01-18 22:16:44,718 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2022-01-18 22:16:44,719 INFO L334 CegarLoopForPetriNet]: 57 programPoint places, -9 predicate places. [2022-01-18 22:16:44,719 INFO L470 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 98 flow [2022-01-18 22:16:44,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 22:16:44,719 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:16:44,719 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 22:16:44,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 22:16:44,720 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:16:44,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:16:44,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1459735523, now seen corresponding path program 1 times [2022-01-18 22:16:44,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:16:44,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636142386] [2022-01-18 22:16:44,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:16:44,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:16:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:16:44,783 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 22:16:44,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:16:44,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636142386] [2022-01-18 22:16:44,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636142386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:16:44,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:16:44,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 22:16:44,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972067807] [2022-01-18 22:16:44,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:16:44,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 22:16:44,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:16:44,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 22:16:44,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 22:16:44,785 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 56 [2022-01-18 22:16:44,786 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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 22:16:44,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:16:44,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 56 [2022-01-18 22:16:44,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:16:44,809 INFO L129 PetriNetUnfolder]: 8/60 cut-off events. [2022-01-18 22:16:44,809 INFO L130 PetriNetUnfolder]: For 12/17 co-relation queries the response was YES. [2022-01-18 22:16:44,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 60 events. 8/60 cut-off events. For 12/17 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 58 event pairs, 1 based on Foata normal form. 2/61 useless extension candidates. Maximal degree in co-relation 76. Up to 14 conditions per place. [2022-01-18 22:16:44,810 INFO L132 encePairwiseOnDemand]: 49/56 looper letters, 8 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2022-01-18 22:16:44,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 144 flow [2022-01-18 22:16:44,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 22:16:44,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-18 22:16:44,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2022-01-18 22:16:44,811 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8080357142857143 [2022-01-18 22:16:44,812 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 181 transitions. [2022-01-18 22:16:44,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 181 transitions. [2022-01-18 22:16:44,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:16:44,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 181 transitions. [2022-01-18 22:16:44,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 22:16:44,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:16:44,814 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:16:44,814 INFO L186 Difference]: Start difference. First operand has 48 places, 42 transitions, 98 flow. Second operand 4 states and 181 transitions. [2022-01-18 22:16:44,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 144 flow [2022-01-18 22:16:44,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-18 22:16:44,815 INFO L242 Difference]: Finished difference. Result has 50 places, 44 transitions, 125 flow [2022-01-18 22:16:44,815 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2022-01-18 22:16:44,816 INFO L334 CegarLoopForPetriNet]: 57 programPoint places, -7 predicate places. [2022-01-18 22:16:44,816 INFO L470 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 125 flow [2022-01-18 22:16:44,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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 22:16:44,816 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:16:44,816 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] [2022-01-18 22:16:44,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 22:16:44,817 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2022-01-18 22:16:44,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:16:44,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1330142114, now seen corresponding path program 1 times [2022-01-18 22:16:44,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:16:44,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356011532] [2022-01-18 22:16:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:16:44,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:16:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:16:44,864 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 22:16:44,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:16:44,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356011532] [2022-01-18 22:16:44,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356011532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:16:44,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:16:44,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 22:16:44,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241427821] [2022-01-18 22:16:44,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:16:44,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 22:16:44,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:16:44,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 22:16:44,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 22:16:44,867 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 56 [2022-01-18 22:16:44,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 22:16:44,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:16:44,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 56 [2022-01-18 22:16:44,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:16:44,881 INFO L129 PetriNetUnfolder]: 4/51 cut-off events. [2022-01-18 22:16:44,882 INFO L130 PetriNetUnfolder]: For 8/11 co-relation queries the response was YES. [2022-01-18 22:16:44,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 51 events. 4/51 cut-off events. For 8/11 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 2/53 useless extension candidates. Maximal degree in co-relation 59. Up to 7 conditions per place. [2022-01-18 22:16:44,882 INFO L132 encePairwiseOnDemand]: 53/56 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2022-01-18 22:16:44,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 139 flow [2022-01-18 22:16:44,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 22:16:44,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-18 22:16:44,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2022-01-18 22:16:44,884 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2022-01-18 22:16:44,884 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 188 transitions. [2022-01-18 22:16:44,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 188 transitions. [2022-01-18 22:16:44,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:16:44,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 188 transitions. [2022-01-18 22:16:44,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 22:16:44,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:16:44,885 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:16:44,885 INFO L186 Difference]: Start difference. First operand has 50 places, 44 transitions, 125 flow. Second operand 4 states and 188 transitions. [2022-01-18 22:16:44,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 139 flow [2022-01-18 22:16:44,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 43 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-18 22:16:44,887 INFO L242 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2022-01-18 22:16:44,887 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2022-01-18 22:16:44,887 INFO L334 CegarLoopForPetriNet]: 57 programPoint places, -6 predicate places. [2022-01-18 22:16:44,887 INFO L470 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2022-01-18 22:16:44,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 22:16:44,889 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-18 22:16:44,890 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-01-18 22:16:44,890 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 22:16:44,890 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-01-18 22:16:44,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 22:16:44,893 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-18 22:16:44,895 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 22:16:44,895 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 22:16:44,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 10:16:44 BasicIcfg [2022-01-18 22:16:44,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 22:16:44,899 INFO L158 Benchmark]: Toolchain (without parser) took 1491.16ms. Allocated memory was 411.0MB in the beginning and 539.0MB in the end (delta: 127.9MB). Free memory was 354.1MB in the beginning and 410.2MB in the end (delta: -56.1MB). Peak memory consumption was 71.0MB. Max. memory is 16.0GB. [2022-01-18 22:16:44,899 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 411.0MB. Free memory is still 372.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 22:16:44,899 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.90ms. Allocated memory was 411.0MB in the beginning and 539.0MB in the end (delta: 127.9MB). Free memory was 354.0MB in the beginning and 501.5MB in the end (delta: -147.5MB). Peak memory consumption was 6.6MB. Max. memory is 16.0GB. [2022-01-18 22:16:44,899 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.14ms. Allocated memory is still 539.0MB. Free memory was 501.5MB in the beginning and 499.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:16:44,900 INFO L158 Benchmark]: Boogie Preprocessor took 28.15ms. Allocated memory is still 539.0MB. Free memory was 499.5MB in the beginning and 498.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:16:44,900 INFO L158 Benchmark]: RCFGBuilder took 335.07ms. Allocated memory is still 539.0MB. Free memory was 498.3MB in the beginning and 481.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-18 22:16:44,900 INFO L158 Benchmark]: TraceAbstraction took 710.86ms. Allocated memory is still 539.0MB. Free memory was 480.6MB in the beginning and 410.2MB in the end (delta: 70.4MB). Peak memory consumption was 71.3MB. Max. memory is 16.0GB. [2022-01-18 22:16:44,902 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 411.0MB. Free memory is still 372.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 365.90ms. Allocated memory was 411.0MB in the beginning and 539.0MB in the end (delta: 127.9MB). Free memory was 354.0MB in the beginning and 501.5MB in the end (delta: -147.5MB). Peak memory consumption was 6.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.14ms. Allocated memory is still 539.0MB. Free memory was 501.5MB in the beginning and 499.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.15ms. Allocated memory is still 539.0MB. Free memory was 499.5MB in the beginning and 498.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 335.07ms. Allocated memory is still 539.0MB. Free memory was 498.3MB in the beginning and 481.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 710.86ms. Allocated memory is still 539.0MB. Free memory was 480.6MB in the beginning and 410.2MB in the end (delta: 70.4MB). Peak memory consumption was 71.3MB. 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: 707]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 721]: 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 3 procedures, 66 locations, 4 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: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60 IncrementalHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 11 mSDtfsCounter, 60 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=3, InterpolantAutomatonStates: 14, 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, 0.2s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 338 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 22:16:44,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...