/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 18:11:11,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 18:11:11,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 18:11:11,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 18:11:11,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 18:11:11,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 18:11:11,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 18:11:11,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 18:11:11,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 18:11:11,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 18:11:11,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 18:11:11,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 18:11:11,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 18:11:11,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 18:11:11,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 18:11:11,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 18:11:11,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 18:11:11,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 18:11:11,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 18:11:11,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 18:11:11,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 18:11:11,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 18:11:11,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 18:11:11,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 18:11:11,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-15 18:11:11,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 18:11:11,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 18:11:11,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 18:11:11,284 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 18:11:11,314 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 18:11:11,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 18:11:11,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 18:11:11,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 18:11:11,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 18:11:11,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 18:11:11,316 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 18:11:11,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 18:11:11,316 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 18:11:11,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 18:11:11,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 18:11:11,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 18:11:11,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 18:11:11,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 18:11:11,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 18:11:11,318 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 18:11:11,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 18:11:11,318 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 18:11:11,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 18:11:11,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 18:11:11,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 18:11:11,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 18:11:11,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 18:11:11,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 18:11:11,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 18:11:11,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 18:11:11,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 18:11:11,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 18:11:11,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 18:11:11,320 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 18:11:11,321 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 18:11:11,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 18:11:11,321 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 18:11:11,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 18:11:11,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 18:11:11,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 18:11:11,504 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 18:11:11,505 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 18:11:11,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i [2022-03-15 18:11:11,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7510371a/e1314e4eb1ad41de8eeddd91b4c51596/FLAG448effb5f [2022-03-15 18:11:11,952 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 18:11:11,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i [2022-03-15 18:11:11,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7510371a/e1314e4eb1ad41de8eeddd91b4c51596/FLAG448effb5f [2022-03-15 18:11:12,346 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7510371a/e1314e4eb1ad41de8eeddd91b4c51596 [2022-03-15 18:11:12,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 18:11:12,349 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 18:11:12,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 18:11:12,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 18:11:12,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 18:11:12,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 06:11:12" (1/1) ... [2022-03-15 18:11:12,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aadda18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:12, skipping insertion in model container [2022-03-15 18:11:12,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 06:11:12" (1/1) ... [2022-03-15 18:11:12,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 18:11:12,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 18:11:12,563 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i[1094,1107] [2022-03-15 18:11:12,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 18:11:12,764 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 18:11:12,771 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i[1094,1107] [2022-03-15 18:11:12,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 18:11:12,835 INFO L208 MainTranslator]: Completed translation [2022-03-15 18:11:12,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:12 WrapperNode [2022-03-15 18:11:12,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 18:11:12,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 18:11:12,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 18:11:12,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 18:11:12,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:12" (1/1) ... [2022-03-15 18:11:12,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:12" (1/1) ... [2022-03-15 18:11:12,903 INFO L137 Inliner]: procedures = 162, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2022-03-15 18:11:12,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 18:11:12,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 18:11:12,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 18:11:12,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 18:11:12,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:12" (1/1) ... [2022-03-15 18:11:12,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:12" (1/1) ... [2022-03-15 18:11:12,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:12" (1/1) ... [2022-03-15 18:11:12,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:12" (1/1) ... [2022-03-15 18:11:12,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:12" (1/1) ... [2022-03-15 18:11:12,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:12" (1/1) ... [2022-03-15 18:11:12,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:12" (1/1) ... [2022-03-15 18:11:12,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 18:11:12,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 18:11:12,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 18:11:12,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 18:11:12,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:12" (1/1) ... [2022-03-15 18:11:12,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 18:11:12,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 18:11:13,021 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) [2022-03-15 18:11:13,050 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 [2022-03-15 18:11:13,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 18:11:13,062 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-03-15 18:11:13,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 18:11:13,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 18:11:13,062 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-03-15 18:11:13,062 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-03-15 18:11:13,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 18:11:13,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 18:11:13,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 18:11:13,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 18:11:13,063 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 18:11:13,124 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 18:11:13,125 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 18:11:13,213 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 18:11:13,217 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 18:11:13,217 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 18:11:13,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 06:11:13 BoogieIcfgContainer [2022-03-15 18:11:13,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 18:11:13,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 18:11:13,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 18:11:13,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 18:11:13,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 06:11:12" (1/3) ... [2022-03-15 18:11:13,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ec0b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 06:11:13, skipping insertion in model container [2022-03-15 18:11:13,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 06:11:12" (2/3) ... [2022-03-15 18:11:13,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ec0b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 06:11:13, skipping insertion in model container [2022-03-15 18:11:13,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 06:11:13" (3/3) ... [2022-03-15 18:11:13,223 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_47-refine-protected2_true.i [2022-03-15 18:11:13,226 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 18:11:13,226 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 18:11:13,226 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-03-15 18:11:13,226 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 18:11:13,245 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,245 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,245 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,246 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,246 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,246 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,246 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,246 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,246 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,247 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,247 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,247 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,248 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,248 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,248 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,248 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,250 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,251 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,251 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,251 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,251 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 18:11:13,252 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-03-15 18:11:13,279 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 18:11:13,284 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 18:11:13,284 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 18:11:13,292 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 18:11:13,297 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 66 transitions, 137 flow [2022-03-15 18:11:13,299 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 66 transitions, 137 flow [2022-03-15 18:11:13,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 66 transitions, 137 flow [2022-03-15 18:11:13,330 INFO L129 PetriNetUnfolder]: 3/65 cut-off events. [2022-03-15 18:11:13,330 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-03-15 18:11:13,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 65 events. 3/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 58 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2022-03-15 18:11:13,336 INFO L116 LiptonReduction]: Number of co-enabled transitions 462 [2022-03-15 18:11:14,899 INFO L131 LiptonReduction]: Checked pairs total: 1146 [2022-03-15 18:11:14,900 INFO L133 LiptonReduction]: Total number of compositions: 68 [2022-03-15 18:11:14,909 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 19 transitions, 43 flow [2022-03-15 18:11:14,930 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 34 states, 30 states have (on average 1.8) internal successors, (54), 33 states have internal predecessors, (54), 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) [2022-03-15 18:11:14,932 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 30 states have (on average 1.8) internal successors, (54), 33 states have internal predecessors, (54), 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) [2022-03-15 18:11:14,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-03-15 18:11:14,935 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:11:14,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-03-15 18:11:14,936 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:11:14,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:11:14,939 INFO L85 PathProgramCache]: Analyzing trace with hash 238428401, now seen corresponding path program 1 times [2022-03-15 18:11:14,952 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:11:14,953 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445645319] [2022-03-15 18:11:14,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:11:14,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:11:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:11:15,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:11:15,083 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:11:15,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445645319] [2022-03-15 18:11:15,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445645319] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:11:15,084 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:11:15,084 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-03-15 18:11:15,085 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [274856724] [2022-03-15 18:11:15,086 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:11:15,087 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:11:15,094 INFO L252 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2022-03-15 18:11:15,094 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:11:15,096 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:11:15,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 18:11:15,098 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:11:15,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 18:11:15,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:11:15,114 INFO L87 Difference]: Start difference. First operand has 34 states, 30 states have (on average 1.8) internal successors, (54), 33 states have internal predecessors, (54), 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-03-15 18:11:15,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:11:15,134 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2022-03-15 18:11:15,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 18:11:15,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2022-03-15 18:11:15,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:11:15,140 INFO L225 Difference]: With dead ends: 26 [2022-03-15 18:11:15,140 INFO L226 Difference]: Without dead ends: 20 [2022-03-15 18:11:15,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:11:15,144 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:11:15,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:11:15,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-03-15 18:11:15,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-03-15 18:11:15,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 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) [2022-03-15 18:11:15,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-03-15 18:11:15,164 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 5 [2022-03-15 18:11:15,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:11:15,164 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-03-15 18:11:15,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-03-15 18:11:15,164 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2022-03-15 18:11:15,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-03-15 18:11:15,165 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:11:15,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:11:15,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 18:11:15,165 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:11:15,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:11:15,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1496397308, now seen corresponding path program 1 times [2022-03-15 18:11:15,167 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:11:15,167 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092051797] [2022-03-15 18:11:15,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:11:15,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:11:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:11:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:11:15,223 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:11:15,223 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092051797] [2022-03-15 18:11:15,223 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092051797] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:11:15,223 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:11:15,223 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 18:11:15,223 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [397410723] [2022-03-15 18:11:15,223 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:11:15,224 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:11:15,225 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 9 transitions. [2022-03-15 18:11:15,226 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:11:15,235 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:11:15,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 18:11:15,236 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:11:15,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 18:11:15,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:11:15,237 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-03-15 18:11:15,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:11:15,248 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2022-03-15 18:11:15,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 18:11:15,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 7 [2022-03-15 18:11:15,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:11:15,249 INFO L225 Difference]: With dead ends: 11 [2022-03-15 18:11:15,249 INFO L226 Difference]: Without dead ends: 9 [2022-03-15 18:11:15,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:11:15,250 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:11:15,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:11:15,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-03-15 18:11:15,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-03-15 18:11:15,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 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) [2022-03-15 18:11:15,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2022-03-15 18:11:15,252 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 7 [2022-03-15 18:11:15,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:11:15,252 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2022-03-15 18:11:15,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-03-15 18:11:15,253 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2022-03-15 18:11:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-15 18:11:15,253 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 18:11:15,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 18:11:15,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 18:11:15,253 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-03-15 18:11:15,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 18:11:15,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1400547996, now seen corresponding path program 1 times [2022-03-15 18:11:15,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 18:11:15,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203348151] [2022-03-15 18:11:15,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 18:11:15,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 18:11:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 18:11:15,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 18:11:15,288 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 18:11:15,288 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203348151] [2022-03-15 18:11:15,288 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203348151] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 18:11:15,288 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 18:11:15,288 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 18:11:15,288 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1772469199] [2022-03-15 18:11:15,288 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 18:11:15,289 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 18:11:15,290 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2022-03-15 18:11:15,290 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 18:11:15,291 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 18:11:15,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 18:11:15,291 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 18:11:15,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 18:11:15,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:11:15,292 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-03-15 18:11:15,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 18:11:15,303 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2022-03-15 18:11:15,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 18:11:15,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2022-03-15 18:11:15,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 18:11:15,303 INFO L225 Difference]: With dead ends: 8 [2022-03-15 18:11:15,303 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 18:11:15,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 18:11:15,305 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 18:11:15,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 18:11:15,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 18:11:15,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 18:11:15,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-03-15 18:11:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 18:11:15,306 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2022-03-15 18:11:15,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 18:11:15,307 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 18:11:15,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-03-15 18:11:15,307 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 18:11:15,307 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 18:11:15,309 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-15 18:11:15,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-03-15 18:11:15,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 18:11:15,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 18:11:15,311 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-15 18:11:15,313 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 18:11:15,313 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 18:11:15,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 06:11:15 BasicIcfg [2022-03-15 18:11:15,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 18:11:15,316 INFO L158 Benchmark]: Toolchain (without parser) took 2967.09ms. Allocated memory was 202.4MB in the beginning and 243.3MB in the end (delta: 40.9MB). Free memory was 150.1MB in the beginning and 109.5MB in the end (delta: 40.6MB). Peak memory consumption was 82.6MB. Max. memory is 8.0GB. [2022-03-15 18:11:15,316 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 202.4MB. Free memory is still 167.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 18:11:15,316 INFO L158 Benchmark]: CACSL2BoogieTranslator took 485.88ms. Allocated memory is still 202.4MB. Free memory was 149.8MB in the beginning and 168.5MB in the end (delta: -18.6MB). Peak memory consumption was 13.7MB. Max. memory is 8.0GB. [2022-03-15 18:11:15,317 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.39ms. Allocated memory is still 202.4MB. Free memory was 168.5MB in the beginning and 166.8MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 18:11:15,317 INFO L158 Benchmark]: Boogie Preprocessor took 35.39ms. Allocated memory is still 202.4MB. Free memory was 166.8MB in the beginning and 165.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 18:11:15,317 INFO L158 Benchmark]: RCFGBuilder took 268.48ms. Allocated memory is still 202.4MB. Free memory was 165.3MB in the beginning and 154.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-15 18:11:15,317 INFO L158 Benchmark]: TraceAbstraction took 2095.87ms. Allocated memory was 202.4MB in the beginning and 243.3MB in the end (delta: 40.9MB). Free memory was 153.8MB in the beginning and 109.5MB in the end (delta: 44.3MB). Peak memory consumption was 85.6MB. Max. memory is 8.0GB. [2022-03-15 18:11:15,319 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 202.4MB. Free memory is still 167.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 485.88ms. Allocated memory is still 202.4MB. Free memory was 149.8MB in the beginning and 168.5MB in the end (delta: -18.6MB). Peak memory consumption was 13.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 76.39ms. Allocated memory is still 202.4MB. Free memory was 168.5MB in the beginning and 166.8MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.39ms. Allocated memory is still 202.4MB. Free memory was 166.8MB in the beginning and 165.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 268.48ms. Allocated memory is still 202.4MB. Free memory was 165.3MB in the beginning and 154.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2095.87ms. Allocated memory was 202.4MB in the beginning and 243.3MB in the end (delta: 40.9MB). Free memory was 153.8MB in the beginning and 109.5MB in the end (delta: 44.3MB). Peak memory consumption was 85.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 67 PlacesBefore, 20 PlacesAfterwards, 66 TransitionsBefore, 19 TransitionsAfterwards, 462 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 0 ChoiceCompositions, 68 TotalNumberOfCompositions, 1146 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 529, positive: 389, positive conditional: 0, positive unconditional: 389, negative: 140, negative conditional: 0, negative unconditional: 140, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 281, positive: 251, positive conditional: 0, positive unconditional: 251, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 529, positive: 138, positive conditional: 0, positive unconditional: 138, negative: 110, negative conditional: 0, negative unconditional: 110, unknown: 281, unknown conditional: 0, unknown unconditional: 281] , Statistics on independence cache: Total cache size (in pairs): 23, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - 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: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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, 73 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 40 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2022-03-15 18:11:15,348 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...