/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/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 00:05:49,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 00:05:49,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 00:05:49,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 00:05:49,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 00:05:49,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 00:05:49,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 00:05:49,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 00:05:49,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 00:05:49,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 00:05:49,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 00:05:49,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 00:05:49,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 00:05:49,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 00:05:49,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 00:05:49,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 00:05:49,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 00:05:49,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 00:05:49,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 00:05:49,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 00:05:49,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 00:05:49,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 00:05:49,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 00:05:49,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 00:05:49,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-06 00:05:49,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-06 00:05:49,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-06 00:05:49,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-06 00:05:49,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-06 00:05:49,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-06 00:05:49,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 00:05:49,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 00:05:49,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 00:05:49,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 00:05:49,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 00:05:49,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 00:05:49,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 00:05:49,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 00:05:49,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 00:05:49,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 00:05:49,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 00:05:49,319 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 00:05:49,345 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 00:05:49,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 00:05:49,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 00:05:49,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 00:05:49,349 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 00:05:49,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 00:05:49,349 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 00:05:49,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 00:05:49,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 00:05:49,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 00:05:49,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 00:05:49,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 00:05:49,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 00:05:49,351 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 00:05:49,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 00:05:49,351 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 00:05:49,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 00:05:49,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 00:05:49,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 00:05:49,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 00:05:49,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 00:05:49,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 00:05:49,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 00:05:49,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 00:05:49,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 00:05:49,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 00:05:49,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 00:05:49,354 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 00:05:49,355 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 00:05:49,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 00:05:49,355 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 00:05:49,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 00:05:49,651 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 00:05:49,655 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 00:05:49,656 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 00:05:49,657 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 00:05:49,659 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2020-10-06 00:05:49,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb69f5975/8b653113cd6c46d792669f697daf3b94/FLAG2dff1f63f [2020-10-06 00:05:50,235 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 00:05:50,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2020-10-06 00:05:50,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb69f5975/8b653113cd6c46d792669f697daf3b94/FLAG2dff1f63f [2020-10-06 00:05:50,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb69f5975/8b653113cd6c46d792669f697daf3b94 [2020-10-06 00:05:50,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 00:05:50,552 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 00:05:50,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 00:05:50,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 00:05:50,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 00:05:50,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 12:05:50" (1/1) ... [2020-10-06 00:05:50,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f67026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:50, skipping insertion in model container [2020-10-06 00:05:50,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 12:05:50" (1/1) ... [2020-10-06 00:05:50,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 00:05:50,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 00:05:51,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 00:05:51,042 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 00:05:51,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 00:05:51,212 INFO L208 MainTranslator]: Completed translation [2020-10-06 00:05:51,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:51 WrapperNode [2020-10-06 00:05:51,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 00:05:51,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 00:05:51,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 00:05:51,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 00:05:51,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:51" (1/1) ... [2020-10-06 00:05:51,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:51" (1/1) ... [2020-10-06 00:05:51,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 00:05:51,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 00:05:51,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 00:05:51,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 00:05:51,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:51" (1/1) ... [2020-10-06 00:05:51,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:51" (1/1) ... [2020-10-06 00:05:51,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:51" (1/1) ... [2020-10-06 00:05:51,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:51" (1/1) ... [2020-10-06 00:05:51,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:51" (1/1) ... [2020-10-06 00:05:51,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:51" (1/1) ... [2020-10-06 00:05:51,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:51" (1/1) ... [2020-10-06 00:05:51,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 00:05:51,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 00:05:51,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 00:05:51,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 00:05:51,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:51" (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 00:05:51,382 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-06 00:05:51,382 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-06 00:05:51,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 00:05:51,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 00:05:51,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 00:05:51,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 00:05:51,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 00:05:51,384 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 00:05:51,937 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 00:05:51,938 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-06 00:05:51,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 12:05:51 BoogieIcfgContainer [2020-10-06 00:05:51,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 00:05:51,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 00:05:51,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 00:05:51,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 00:05:51,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 12:05:50" (1/3) ... [2020-10-06 00:05:51,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0b1344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 12:05:51, skipping insertion in model container [2020-10-06 00:05:51,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:05:51" (2/3) ... [2020-10-06 00:05:51,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0b1344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 12:05:51, skipping insertion in model container [2020-10-06 00:05:51,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 12:05:51" (3/3) ... [2020-10-06 00:05:51,948 INFO L109 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2020-10-06 00:05:51,958 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 00:05:51,959 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 00:05:51,966 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-06 00:05:51,967 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 00:05:51,989 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,989 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,989 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,990 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,990 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,990 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,991 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,991 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,991 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,991 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,992 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,992 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,992 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,992 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,993 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,993 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,997 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,997 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,998 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,998 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,998 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,999 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,999 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:51,999 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:05:52,017 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 00:05:52,038 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:05:52,039 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:05:52,039 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:05:52,039 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:05:52,039 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:05:52,039 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:05:52,040 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:05:52,040 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:05:52,053 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 43 transitions, 91 flow [2020-10-06 00:05:52,055 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 45 places, 43 transitions, 91 flow [2020-10-06 00:05:52,086 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2020-10-06 00:05:52,087 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 00:05:52,091 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 42 events. 2/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2020-10-06 00:05:52,092 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 45 places, 43 transitions, 91 flow [2020-10-06 00:05:52,104 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2020-10-06 00:05:52,105 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 00:05:52,106 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 42 events. 2/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2020-10-06 00:05:52,107 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 378 [2020-10-06 00:05:52,108 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:05:52,850 INFO L206 etLargeBlockEncoding]: Checked pairs total: 840 [2020-10-06 00:05:52,851 INFO L214 etLargeBlockEncoding]: Total number of compositions: 28 [2020-10-06 00:05:52,857 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 16 transitions, 37 flow [2020-10-06 00:05:52,869 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-06 00:05:52,871 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-06 00:05:52,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-06 00:05:52,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:52,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-06 00:05:52,886 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:52,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:52,897 INFO L82 PathProgramCache]: Analyzing trace with hash 313153214, now seen corresponding path program 1 times [2020-10-06 00:05:52,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:52,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027925507] [2020-10-06 00:05:52,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:53,088 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 00:05:53,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027925507] [2020-10-06 00:05:53,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:05:53,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 00:05:53,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1723319420] [2020-10-06 00:05:53,092 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:53,095 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:53,108 INFO L258 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-06 00:05:53,108 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:53,112 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:05:53,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:05:53,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:53,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:05:53,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:05:53,135 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-06 00:05:53,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:53,158 INFO L93 Difference]: Finished difference Result 34 states and 59 transitions. [2020-10-06 00:05:53,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:05:53,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-06 00:05:53,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:53,168 INFO L225 Difference]: With dead ends: 34 [2020-10-06 00:05:53,169 INFO L226 Difference]: Without dead ends: 32 [2020-10-06 00:05:53,170 INFO L675 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 [2020-10-06 00:05:53,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-06 00:05:53,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-06 00:05:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-06 00:05:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 56 transitions. [2020-10-06 00:05:53,207 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 56 transitions. Word has length 5 [2020-10-06 00:05:53,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:53,208 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 56 transitions. [2020-10-06 00:05:53,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:05:53,208 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 56 transitions. [2020-10-06 00:05:53,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-06 00:05:53,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:53,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:53,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 00:05:53,210 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:53,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:53,211 INFO L82 PathProgramCache]: Analyzing trace with hash 297773264, now seen corresponding path program 1 times [2020-10-06 00:05:53,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:53,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798828808] [2020-10-06 00:05:53,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:53,261 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 00:05:53,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798828808] [2020-10-06 00:05:53,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:05:53,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:05:53,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [506547795] [2020-10-06 00:05:53,263 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:53,263 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:53,265 INFO L258 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-10-06 00:05:53,265 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:53,266 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:05:53,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:05:53,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:53,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:05:53,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:05:53,268 INFO L87 Difference]: Start difference. First operand 32 states and 56 transitions. Second operand 3 states. [2020-10-06 00:05:53,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:53,275 INFO L93 Difference]: Finished difference Result 27 states and 45 transitions. [2020-10-06 00:05:53,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:05:53,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-06 00:05:53,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:53,277 INFO L225 Difference]: With dead ends: 27 [2020-10-06 00:05:53,277 INFO L226 Difference]: Without dead ends: 24 [2020-10-06 00:05:53,278 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 00:05:53,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-06 00:05:53,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-06 00:05:53,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-06 00:05:53,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 37 transitions. [2020-10-06 00:05:53,283 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 37 transitions. Word has length 7 [2020-10-06 00:05:53,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:53,283 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 37 transitions. [2020-10-06 00:05:53,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:05:53,284 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 37 transitions. [2020-10-06 00:05:53,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 00:05:53,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:53,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:53,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 00:05:53,285 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:53,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:53,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1982953930, now seen corresponding path program 1 times [2020-10-06 00:05:53,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:53,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806910328] [2020-10-06 00:05:53,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:53,396 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 00:05:53,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806910328] [2020-10-06 00:05:53,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:05:53,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-06 00:05:53,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1573442237] [2020-10-06 00:05:53,397 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:53,398 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:53,401 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-10-06 00:05:53,401 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:53,409 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:05:53,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:05:53,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:53,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:05:53,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:05:53,411 INFO L87 Difference]: Start difference. First operand 24 states and 37 transitions. Second operand 4 states. [2020-10-06 00:05:53,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:53,430 INFO L93 Difference]: Finished difference Result 18 states and 25 transitions. [2020-10-06 00:05:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 00:05:53,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-06 00:05:53,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:53,432 INFO L225 Difference]: With dead ends: 18 [2020-10-06 00:05:53,432 INFO L226 Difference]: Without dead ends: 18 [2020-10-06 00:05:53,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:05:53,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-06 00:05:53,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-06 00:05:53,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-06 00:05:53,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2020-10-06 00:05:53,436 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 9 [2020-10-06 00:05:53,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:53,436 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-10-06 00:05:53,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:05:53,437 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2020-10-06 00:05:53,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 00:05:53,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:05:53,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:05:53,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 00:05:53,438 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:05:53,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:05:53,439 INFO L82 PathProgramCache]: Analyzing trace with hash -970597882, now seen corresponding path program 1 times [2020-10-06 00:05:53,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:05:53,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376036246] [2020-10-06 00:05:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:05:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:05:53,558 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 00:05:53,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376036246] [2020-10-06 00:05:53,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:05:53,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:05:53,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [379915903] [2020-10-06 00:05:53,560 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:05:53,561 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:05:53,565 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 19 transitions. [2020-10-06 00:05:53,565 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:05:53,593 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:05:53,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:05:53,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:05:53,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:05:53,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:05:53,594 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 4 states. [2020-10-06 00:05:53,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:05:53,602 INFO L93 Difference]: Finished difference Result 17 states and 24 transitions. [2020-10-06 00:05:53,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 00:05:53,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-06 00:05:53,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:05:53,604 INFO L225 Difference]: With dead ends: 17 [2020-10-06 00:05:53,605 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 00:05:53,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:05:53,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 00:05:53,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 00:05:53,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 00:05:53,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 00:05:53,606 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-06 00:05:53,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:05:53,606 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 00:05:53,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:05:53,607 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 00:05:53,607 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 00:05:53,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 00:05:53,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 12:05:53 BasicIcfg [2020-10-06 00:05:53,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 00:05:53,614 INFO L168 Benchmark]: Toolchain (without parser) took 3060.77 ms. Allocated memory was 140.0 MB in the beginning and 248.5 MB in the end (delta: 108.5 MB). Free memory was 101.7 MB in the beginning and 205.9 MB in the end (delta: -104.2 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-10-06 00:05:53,614 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-06 00:05:53,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.12 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.5 MB in the beginning and 162.0 MB in the end (delta: -60.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-10-06 00:05:53,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.59 ms. Allocated memory is still 202.9 MB. Free memory was 162.0 MB in the beginning and 160.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-06 00:05:53,617 INFO L168 Benchmark]: Boogie Preprocessor took 27.27 ms. Allocated memory is still 202.9 MB. Free memory was 160.0 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-06 00:05:53,618 INFO L168 Benchmark]: RCFGBuilder took 623.45 ms. Allocated memory is still 202.9 MB. Free memory was 158.0 MB in the beginning and 114.6 MB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. [2020-10-06 00:05:53,619 INFO L168 Benchmark]: TraceAbstraction took 1669.90 ms. Allocated memory was 202.9 MB in the beginning and 248.5 MB in the end (delta: 45.6 MB). Free memory was 114.6 MB in the beginning and 205.9 MB in the end (delta: -91.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-06 00:05:53,623 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 661.12 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.5 MB in the beginning and 162.0 MB in the end (delta: -60.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 74.59 ms. Allocated memory is still 202.9 MB. Free memory was 162.0 MB in the beginning and 160.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.27 ms. Allocated memory is still 202.9 MB. Free memory was 160.0 MB in the beginning and 158.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 623.45 ms. Allocated memory is still 202.9 MB. Free memory was 158.0 MB in the beginning and 114.6 MB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1669.90 ms. Allocated memory was 202.9 MB in the beginning and 248.5 MB in the end (delta: 45.6 MB). Free memory was 114.6 MB in the beginning and 205.9 MB in the end (delta: -91.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 45 ProgramPointsBefore, 18 ProgramPointsAfterwards, 43 TransitionsBefore, 16 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 5 FixpointIterations, 10 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 181 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 840 CheckedPairsTotal, 28 TotalNumberOfCompositions - PositiveResult [Line: 696]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 710]: 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, 42 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 46 SDtfs, 19 SDslu, 29 SDs, 0 SdLazy, 22 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 844 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...