/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-ext/19_time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 00:05:44,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 00:05:44,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 00:05:44,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 00:05:44,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 00:05:45,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 00:05:45,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 00:05:45,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 00:05:45,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 00:05:45,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 00:05:45,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 00:05:45,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 00:05:45,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 00:05:45,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 00:05:45,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 00:05:45,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 00:05:45,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 00:05:45,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 00:05:45,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 00:05:45,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 00:05:45,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 00:05:45,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 00:05:45,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 00:05:45,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 00:05:45,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-06 00:05:45,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 00:05:45,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 00:05:45,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 00:05:45,087 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 [2020-10-06 00:05:45,125 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 00:05:45,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 00:05:45,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 00:05:45,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 00:05:45,128 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 00:05:45,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 00:05:45,128 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 00:05:45,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 00:05:45,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 00:05:45,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 00:05:45,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 00:05:45,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 00:05:45,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 00:05:45,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 00:05:45,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 00:05:45,131 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 00:05:45,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 00:05:45,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 00:05:45,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 00:05:45,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 00:05:45,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 00:05:45,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 00:05:45,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 00:05:45,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 00:05:45,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 00:05:45,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 00:05:45,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 00:05:45,134 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 00:05:45,134 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 00:05:45,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 00:05:45,134 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 00:05:45,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 00:05:45,505 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 00:05:45,509 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 00:05:45,511 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 00:05:45,512 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 00:05:45,513 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/19_time_var_mutex.i [2020-10-06 00:05:45,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c66556a36/a99155a86e2542098a8a23a073b1ce1d/FLAGf20184421 [2020-10-06 00:05:46,156 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 00:05:46,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/19_time_var_mutex.i [2020-10-06 00:05:46,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c66556a36/a99155a86e2542098a8a23a073b1ce1d/FLAGf20184421 [2020-10-06 00:05:46,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c66556a36/a99155a86e2542098a8a23a073b1ce1d [2020-10-06 00:05:46,453 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 00:05:46,455 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 00:05:46,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 00:05:46,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 00:05:46,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 00:05:46,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 12:05:46" (1/1) ... [2020-10-06 00:05:46,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d14837f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:46, skipping insertion in model container [2020-10-06 00:05:46,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 12:05:46" (1/1) ... [2020-10-06 00:05:46,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 00:05:46,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 00:05:46,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 00:05:47,009 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 00:05:47,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 00:05:47,127 INFO L208 MainTranslator]: Completed translation [2020-10-06 00:05:47,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:47 WrapperNode [2020-10-06 00:05:47,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 00:05:47,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 00:05:47,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 00:05:47,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 00:05:47,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:47" (1/1) ... [2020-10-06 00:05:47,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:47" (1/1) ... [2020-10-06 00:05:47,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 00:05:47,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 00:05:47,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 00:05:47,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 00:05:47,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:47" (1/1) ... [2020-10-06 00:05:47,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:47" (1/1) ... [2020-10-06 00:05:47,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:47" (1/1) ... [2020-10-06 00:05:47,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:47" (1/1) ... [2020-10-06 00:05:47,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:47" (1/1) ... [2020-10-06 00:05:47,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:47" (1/1) ... [2020-10-06 00:05:47,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:47" (1/1) ... [2020-10-06 00:05:47,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 00:05:47,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 00:05:47,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 00:05:47,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 00:05:47,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 00:05:47,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-06 00:05:47,305 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-06 00:05:47,305 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-06 00:05:47,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 00:05:47,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 00:05:47,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 00:05:47,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-06 00:05:47,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 00:05:47,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 00:05:47,308 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 00:05:48,234 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 00:05:48,234 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-06 00:05:48,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 12:05:48 BoogieIcfgContainer [2020-10-06 00:05:48,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 00:05:48,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 00:05:48,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 00:05:48,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 00:05:48,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 12:05:46" (1/3) ... [2020-10-06 00:05:48,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed7c320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 12:05:48, skipping insertion in model container [2020-10-06 00:05:48,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:47" (2/3) ... [2020-10-06 00:05:48,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed7c320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 12:05:48, skipping insertion in model container [2020-10-06 00:05:48,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 12:05:48" (3/3) ... [2020-10-06 00:05:48,248 INFO L109 eAbstractionObserver]: Analyzing ICFG 19_time_var_mutex.i [2020-10-06 00:05:48,259 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 00:05:48,259 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 00:05:48,267 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-06 00:05:48,268 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 00:05:48,294 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,296 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,296 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,296 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,296 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,297 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,297 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,297 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,297 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,298 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,298 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,298 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,298 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,299 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,299 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,299 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,299 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,299 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,299 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,300 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,300 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,300 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,300 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,301 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,301 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,301 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,301 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,301 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,306 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,306 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,306 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,306 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,307 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,307 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,307 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,307 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,307 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,308 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,308 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,308 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,308 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,308 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,309 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,309 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:48,328 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 00:05:48,350 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:05:48,351 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:05:48,351 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:05:48,351 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:05:48,351 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:05:48,351 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:05:48,352 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:05:48,352 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:05:48,367 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 54 transitions, 113 flow [2020-10-06 00:05:48,370 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 54 places, 54 transitions, 113 flow [2020-10-06 00:05:48,407 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2020-10-06 00:05:48,408 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 00:05:48,413 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 53 events. 4/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 38. Up to 3 conditions per place. [2020-10-06 00:05:48,415 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 54 places, 54 transitions, 113 flow [2020-10-06 00:05:48,430 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2020-10-06 00:05:48,430 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 00:05:48,431 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 53 events. 4/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 38. Up to 3 conditions per place. [2020-10-06 00:05:48,433 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 704 [2020-10-06 00:05:48,434 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:05:49,854 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-06 00:05:49,935 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2171 [2020-10-06 00:05:49,936 INFO L214 etLargeBlockEncoding]: Total number of compositions: 39 [2020-10-06 00:05:49,939 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 21 transitions, 47 flow [2020-10-06 00:05:49,950 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-10-06 00:05:49,952 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-06 00:05:49,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-06 00:05:49,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:49,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-06 00:05:49,961 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:49,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:49,967 INFO L82 PathProgramCache]: Analyzing trace with hash 403413595, now seen corresponding path program 1 times [2020-10-06 00:05:49,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:49,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412779928] [2020-10-06 00:05:49,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:50,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:50,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412779928] [2020-10-06 00:05:50,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:05:50,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:05:50,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1156458376] [2020-10-06 00:05:50,200 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:50,204 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:50,220 INFO L258 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-06 00:05:50,220 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:50,225 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:05:50,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:05:50,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:50,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:05:50,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:05:50,247 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-10-06 00:05:50,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:50,270 INFO L93 Difference]: Finished difference Result 74 states and 138 transitions. [2020-10-06 00:05:50,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:05:50,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-06 00:05:50,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:50,284 INFO L225 Difference]: With dead ends: 74 [2020-10-06 00:05:50,284 INFO L226 Difference]: Without dead ends: 68 [2020-10-06 00:05:50,286 INFO L675 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 [2020-10-06 00:05:50,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-06 00:05:50,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-06 00:05:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-06 00:05:50,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 124 transitions. [2020-10-06 00:05:50,333 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 124 transitions. Word has length 5 [2020-10-06 00:05:50,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:50,333 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 124 transitions. [2020-10-06 00:05:50,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:05:50,334 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 124 transitions. [2020-10-06 00:05:50,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-06 00:05:50,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:50,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-06 00:05:50,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 00:05:50,335 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:50,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:50,336 INFO L82 PathProgramCache]: Analyzing trace with hash -378762693, now seen corresponding path program 1 times [2020-10-06 00:05:50,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:50,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445662880] [2020-10-06 00:05:50,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:50,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445662880] [2020-10-06 00:05:50,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:05:50,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:05:50,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1929769554] [2020-10-06 00:05:50,392 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:50,393 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:50,394 INFO L258 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-06 00:05:50,394 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:50,395 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:05:50,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:05:50,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:50,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:05:50,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:05:50,397 INFO L87 Difference]: Start difference. First operand 68 states and 124 transitions. Second operand 3 states. [2020-10-06 00:05:50,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:50,420 INFO L93 Difference]: Finished difference Result 66 states and 112 transitions. [2020-10-06 00:05:50,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:05:50,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-06 00:05:50,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:50,422 INFO L225 Difference]: With dead ends: 66 [2020-10-06 00:05:50,423 INFO L226 Difference]: Without dead ends: 58 [2020-10-06 00:05:50,424 INFO L675 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 [2020-10-06 00:05:50,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-06 00:05:50,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-10-06 00:05:50,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-06 00:05:50,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 95 transitions. [2020-10-06 00:05:50,433 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 95 transitions. Word has length 6 [2020-10-06 00:05:50,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:50,433 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 95 transitions. [2020-10-06 00:05:50,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:05:50,433 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 95 transitions. [2020-10-06 00:05:50,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 00:05:50,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:50,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:50,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 00:05:50,435 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:50,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:50,435 INFO L82 PathProgramCache]: Analyzing trace with hash 778386525, now seen corresponding path program 1 times [2020-10-06 00:05:50,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:50,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222019806] [2020-10-06 00:05:50,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:50,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222019806] [2020-10-06 00:05:50,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:05:50,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:05:50,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1653078910] [2020-10-06 00:05:50,486 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:50,487 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:50,488 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 00:05:50,489 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:50,489 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:05:50,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:05:50,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:50,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:05:50,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:05:50,490 INFO L87 Difference]: Start difference. First operand 54 states and 95 transitions. Second operand 3 states. [2020-10-06 00:05:50,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:50,518 INFO L93 Difference]: Finished difference Result 50 states and 82 transitions. [2020-10-06 00:05:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:05:50,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 00:05:50,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:50,520 INFO L225 Difference]: With dead ends: 50 [2020-10-06 00:05:50,520 INFO L226 Difference]: Without dead ends: 37 [2020-10-06 00:05:50,520 INFO L675 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 [2020-10-06 00:05:50,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-06 00:05:50,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-06 00:05:50,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-06 00:05:50,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 54 transitions. [2020-10-06 00:05:50,526 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 54 transitions. Word has length 8 [2020-10-06 00:05:50,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:50,526 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 54 transitions. [2020-10-06 00:05:50,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:05:50,526 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 54 transitions. [2020-10-06 00:05:50,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 00:05:50,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:50,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:50,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 00:05:50,528 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:50,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:50,528 INFO L82 PathProgramCache]: Analyzing trace with hash 537187588, now seen corresponding path program 1 times [2020-10-06 00:05:50,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:50,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653438861] [2020-10-06 00:05:50,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:50,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653438861] [2020-10-06 00:05:50,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:05:50,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:05:50,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [517397764] [2020-10-06 00:05:50,578 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:50,580 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:50,583 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 18 transitions. [2020-10-06 00:05:50,583 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:50,592 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [725#(not (= ~busy~0 0))] [2020-10-06 00:05:50,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:05:50,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:50,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:05:50,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:05:50,593 INFO L87 Difference]: Start difference. First operand 37 states and 54 transitions. Second operand 4 states. [2020-10-06 00:05:50,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:50,603 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2020-10-06 00:05:50,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:05:50,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-06 00:05:50,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:50,604 INFO L225 Difference]: With dead ends: 37 [2020-10-06 00:05:50,604 INFO L226 Difference]: Without dead ends: 31 [2020-10-06 00:05:50,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:05:50,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-06 00:05:50,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-06 00:05:50,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-06 00:05:50,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-06 00:05:50,608 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-10-06 00:05:50,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:50,609 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-06 00:05:50,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:05:50,609 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-06 00:05:50,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 00:05:50,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:50,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:50,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 00:05:50,610 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:50,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:50,611 INFO L82 PathProgramCache]: Analyzing trace with hash 93897508, now seen corresponding path program 2 times [2020-10-06 00:05:50,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:50,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867192008] [2020-10-06 00:05:50,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:50,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:05:50,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867192008] [2020-10-06 00:05:50,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:05:50,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-06 00:05:50,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [46265353] [2020-10-06 00:05:50,698 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:50,699 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:50,701 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-10-06 00:05:50,701 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:50,783 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [831#(not (= (select (select |#memory_int| |~#m_busy~0.base|) |~#m_busy~0.offset|) 0))] [2020-10-06 00:05:50,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-06 00:05:50,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:50,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-06 00:05:50,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-06 00:05:50,786 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 7 states. [2020-10-06 00:05:50,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:50,835 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-10-06 00:05:50,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 00:05:50,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-10-06 00:05:50,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:50,837 INFO L225 Difference]: With dead ends: 11 [2020-10-06 00:05:50,837 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 00:05:50,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-06 00:05:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 00:05:50,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 00:05:50,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 00:05:50,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 00:05:50,839 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-06 00:05:50,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:50,839 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 00:05:50,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-06 00:05:50,839 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 00:05:50,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 00:05:50,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 00:05:50,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 12:05:50 BasicIcfg [2020-10-06 00:05:50,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 00:05:50,846 INFO L168 Benchmark]: Toolchain (without parser) took 4390.79 ms. Allocated memory was 142.1 MB in the beginning and 244.8 MB in the end (delta: 102.8 MB). Free memory was 102.4 MB in the beginning and 132.3 MB in the end (delta: -29.9 MB). Peak memory consumption was 72.8 MB. Max. memory is 7.1 GB. [2020-10-06 00:05:50,847 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 142.1 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-06 00:05:50,848 INFO L168 Benchmark]: CACSL2BoogieTranslator took 672.49 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 164.4 MB in the end (delta: -62.3 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-10-06 00:05:50,849 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.04 ms. Allocated memory is still 205.5 MB. Free memory was 164.4 MB in the beginning and 161.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-10-06 00:05:50,849 INFO L168 Benchmark]: Boogie Preprocessor took 33.68 ms. Allocated memory is still 205.5 MB. Free memory was 161.9 MB in the beginning and 160.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2020-10-06 00:05:50,850 INFO L168 Benchmark]: RCFGBuilder took 1021.01 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 160.7 MB in the beginning and 198.9 MB in the end (delta: -38.2 MB). Peak memory consumption was 69.8 MB. Max. memory is 7.1 GB. [2020-10-06 00:05:50,851 INFO L168 Benchmark]: TraceAbstraction took 2603.45 ms. Allocated memory was 233.8 MB in the beginning and 244.8 MB in the end (delta: 11.0 MB). Free memory was 198.9 MB in the beginning and 132.3 MB in the end (delta: 66.6 MB). Peak memory consumption was 77.6 MB. Max. memory is 7.1 GB. [2020-10-06 00:05:50,856 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 142.1 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 672.49 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 164.4 MB in the end (delta: -62.3 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.04 ms. Allocated memory is still 205.5 MB. Free memory was 164.4 MB in the beginning and 161.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.68 ms. Allocated memory is still 205.5 MB. Free memory was 161.9 MB in the beginning and 160.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1021.01 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 160.7 MB in the beginning and 198.9 MB in the end (delta: -38.2 MB). Peak memory consumption was 69.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2603.45 ms. Allocated memory was 233.8 MB in the beginning and 244.8 MB in the end (delta: 11.0 MB). Free memory was 198.9 MB in the beginning and 132.3 MB in the end (delta: 66.6 MB). Peak memory consumption was 77.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 54 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 21 TransitionsAfterwards, 704 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 374 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2171 CheckedPairsTotal, 39 TotalNumberOfCompositions - PositiveResult [Line: 702]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 711]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 51 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 77 SDtfs, 52 SDslu, 39 SDs, 0 SdLazy, 31 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, 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, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 608 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...