/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:37:51,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:37:51,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:37:51,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:37:51,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:37:51,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:37:51,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:37:51,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:37:51,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:37:51,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:37:51,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:37:51,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:37:51,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:37:51,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:37:51,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:37:51,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:37:51,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:37:51,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:37:51,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:37:51,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:37:51,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:37:51,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:37:51,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:37:51,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:37:51,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 10:37:51,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 10:37:51,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 10:37:51,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 10:37:51,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 10:37:51,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 10:37:51,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 10:37:51,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 10:37:51,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 10:37:51,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:37:51,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:37:51,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:37:51,578 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:37:51,632 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:37:51,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:37:51,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:37:51,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:37:51,638 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:37:51,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:37:51,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:37:51,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:37:51,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:37:51,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:37:51,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:37:51,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:37:51,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:37:51,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:37:51,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:37:51,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:37:51,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:37:51,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:37:51,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:37:51,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:37:51,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:37:51,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:37:51,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:37:51,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:37:51,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:37:51,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:37:52,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:37:52,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:37:52,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:37:52,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:37:52,097 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:37:52,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i [2020-12-22 10:37:52,177 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2737278/eeeabb089ffc4aaebcc2dfcd0ddb0c93/FLAGa00b17f03 [2020-12-22 10:37:53,063 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:37:53,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i [2020-12-22 10:37:53,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2737278/eeeabb089ffc4aaebcc2dfcd0ddb0c93/FLAGa00b17f03 [2020-12-22 10:37:53,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2737278/eeeabb089ffc4aaebcc2dfcd0ddb0c93 [2020-12-22 10:37:53,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:37:53,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:37:53,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:37:53,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:37:53,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:37:53,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:37:53" (1/1) ... [2020-12-22 10:37:53,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35d50b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:37:53, skipping insertion in model container [2020-12-22 10:37:53,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:37:53" (1/1) ... [2020-12-22 10:37:53,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:37:53,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:37:53,684 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i[30382,30395] [2020-12-22 10:37:53,691 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i[30752,30765] [2020-12-22 10:37:53,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:37:53,708 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:37:53,751 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i[30382,30395] [2020-12-22 10:37:53,757 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i[30752,30765] [2020-12-22 10:37:53,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:37:53,965 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:37:53,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:37:53 WrapperNode [2020-12-22 10:37:53,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:37:53,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:37:53,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:37:53,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:37:53,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:37:53" (1/1) ... [2020-12-22 10:37:54,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:37:53" (1/1) ... [2020-12-22 10:37:54,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:37:54,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:37:54,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:37:54,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:37:54,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:37:53" (1/1) ... [2020-12-22 10:37:54,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:37:53" (1/1) ... [2020-12-22 10:37:54,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:37:53" (1/1) ... [2020-12-22 10:37:54,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:37:53" (1/1) ... [2020-12-22 10:37:54,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:37:53" (1/1) ... [2020-12-22 10:37:54,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:37:53" (1/1) ... [2020-12-22 10:37:54,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:37:53" (1/1) ... [2020-12-22 10:37:54,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:37:54,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:37:54,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:37:54,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:37:54,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:37:53" (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 [2020-12-22 10:37:54,221 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-12-22 10:37:54,221 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-12-22 10:37:54,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 10:37:54,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:37:54,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 10:37:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:37:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:37:54,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:37:54,224 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-22 10:37:55,143 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:37:55,143 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-22 10:37:55,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:37:55 BoogieIcfgContainer [2020-12-22 10:37:55,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:37:55,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:37:55,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:37:55,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:37:55,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:37:53" (1/3) ... [2020-12-22 10:37:55,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd27ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:37:55, skipping insertion in model container [2020-12-22 10:37:55,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:37:53" (2/3) ... [2020-12-22 10:37:55,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd27ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:37:55, skipping insertion in model container [2020-12-22 10:37:55,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:37:55" (3/3) ... [2020-12-22 10:37:55,155 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2020-12-22 10:37:55,162 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-22 10:37:55,162 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:37:55,167 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:37:55,168 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-22 10:37:55,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,204 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,206 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,206 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,208 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,208 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-22 10:37:55,210 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-22 10:37:55,230 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 10:37:55,255 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:37:55,255 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:37:55,256 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:37:55,257 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:37:55,257 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:37:55,257 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:37:55,257 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:37:55,258 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:37:55,276 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-22 10:37:55,278 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 47 transitions, 99 flow [2020-12-22 10:37:55,288 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 47 transitions, 99 flow [2020-12-22 10:37:55,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 47 transitions, 99 flow [2020-12-22 10:37:55,344 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2020-12-22 10:37:55,345 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-22 10:37:55,348 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 2/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2020-12-22 10:37:55,350 INFO L116 LiptonReduction]: Number of co-enabled transitions 378 [2020-12-22 10:37:56,110 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-12-22 10:37:58,513 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-12-22 10:37:58,806 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-12-22 10:37:58,920 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-12-22 10:37:58,936 INFO L131 LiptonReduction]: Checked pairs total: 808 [2020-12-22 10:37:58,936 INFO L133 LiptonReduction]: Total number of compositions: 36 [2020-12-22 10:37:58,943 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 14 transitions, 33 flow [2020-12-22 10:37:58,955 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 38 states. [2020-12-22 10:37:58,957 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-12-22 10:37:58,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-22 10:37:58,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:37:58,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-22 10:37:58,966 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:37:58,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:37:58,979 INFO L82 PathProgramCache]: Analyzing trace with hash 10739436, now seen corresponding path program 1 times [2020-12-22 10:37:58,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:37:58,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315356581] [2020-12-22 10:37:58,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:37:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:37:59,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:37:59,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315356581] [2020-12-22 10:37:59,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:37:59,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-22 10:37:59,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619343932] [2020-12-22 10:37:59,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:37:59,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:37:59,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:37:59,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:37:59,296 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-12-22 10:37:59,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:37:59,329 INFO L93 Difference]: Finished difference Result 29 states and 50 transitions. [2020-12-22 10:37:59,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:37:59,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-22 10:37:59,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:37:59,341 INFO L225 Difference]: With dead ends: 29 [2020-12-22 10:37:59,341 INFO L226 Difference]: Without dead ends: 22 [2020-12-22 10:37:59,343 INFO L677 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 [2020-12-22 10:37:59,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-22 10:37:59,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-22 10:37:59,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 10:37:59,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 38 transitions. [2020-12-22 10:37:59,382 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 38 transitions. Word has length 4 [2020-12-22 10:37:59,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:37:59,382 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 38 transitions. [2020-12-22 10:37:59,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:37:59,383 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 38 transitions. [2020-12-22 10:37:59,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 10:37:59,383 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:37:59,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 10:37:59,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:37:59,384 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:37:59,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:37:59,385 INFO L82 PathProgramCache]: Analyzing trace with hash 332930875, now seen corresponding path program 1 times [2020-12-22 10:37:59,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:37:59,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133087118] [2020-12-22 10:37:59,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:37:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:37:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:37:59,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133087118] [2020-12-22 10:37:59,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:37:59,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:37:59,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185675749] [2020-12-22 10:37:59,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:37:59,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:37:59,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:37:59,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:37:59,443 INFO L87 Difference]: Start difference. First operand 22 states and 38 transitions. Second operand 3 states. [2020-12-22 10:37:59,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:37:59,455 INFO L93 Difference]: Finished difference Result 21 states and 35 transitions. [2020-12-22 10:37:59,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:37:59,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-22 10:37:59,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:37:59,457 INFO L225 Difference]: With dead ends: 21 [2020-12-22 10:37:59,457 INFO L226 Difference]: Without dead ends: 18 [2020-12-22 10:37:59,458 INFO L677 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 [2020-12-22 10:37:59,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-22 10:37:59,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-22 10:37:59,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-22 10:37:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2020-12-22 10:37:59,463 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 27 transitions. Word has length 5 [2020-12-22 10:37:59,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:37:59,463 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 27 transitions. [2020-12-22 10:37:59,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:37:59,463 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 27 transitions. [2020-12-22 10:37:59,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 10:37:59,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:37:59,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:37:59,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:37:59,464 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:37:59,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:37:59,465 INFO L82 PathProgramCache]: Analyzing trace with hash 2110825467, now seen corresponding path program 1 times [2020-12-22 10:37:59,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:37:59,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118035528] [2020-12-22 10:37:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:37:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:37:59,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:37:59,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118035528] [2020-12-22 10:37:59,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:37:59,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 10:37:59,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210036646] [2020-12-22 10:37:59,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:37:59,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:37:59,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:37:59,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:37:59,611 INFO L87 Difference]: Start difference. First operand 18 states and 27 transitions. Second operand 4 states. [2020-12-22 10:37:59,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:37:59,652 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2020-12-22 10:37:59,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 10:37:59,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-22 10:37:59,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:37:59,654 INFO L225 Difference]: With dead ends: 14 [2020-12-22 10:37:59,654 INFO L226 Difference]: Without dead ends: 14 [2020-12-22 10:37:59,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:37:59,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-22 10:37:59,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-22 10:37:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-22 10:37:59,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2020-12-22 10:37:59,658 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 7 [2020-12-22 10:37:59,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:37:59,658 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2020-12-22 10:37:59,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:37:59,659 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2020-12-22 10:37:59,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 10:37:59,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:37:59,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:37:59,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:37:59,661 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:37:59,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:37:59,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1243762462, now seen corresponding path program 1 times [2020-12-22 10:37:59,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:37:59,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835305751] [2020-12-22 10:37:59,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:37:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:37:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:37:59,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835305751] [2020-12-22 10:37:59,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:37:59,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:37:59,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155702342] [2020-12-22 10:37:59,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:37:59,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:37:59,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:37:59,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:37:59,730 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand 4 states. [2020-12-22 10:37:59,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:37:59,740 INFO L93 Difference]: Finished difference Result 13 states and 18 transitions. [2020-12-22 10:37:59,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 10:37:59,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 10:37:59,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:37:59,741 INFO L225 Difference]: With dead ends: 13 [2020-12-22 10:37:59,741 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 10:37:59,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:37:59,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 10:37:59,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 10:37:59,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 10:37:59,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 10:37:59,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-12-22 10:37:59,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:37:59,743 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 10:37:59,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:37:59,743 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 10:37:59,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 10:37:59,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:37:59,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 10:37:59 BasicIcfg [2020-12-22 10:37:59,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 10:37:59,749 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 10:37:59,749 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 10:37:59,749 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 10:37:59,750 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:37:55" (3/4) ... [2020-12-22 10:37:59,754 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 10:37:59,760 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-12-22 10:37:59,767 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2020-12-22 10:37:59,767 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-22 10:37:59,767 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-22 10:37:59,768 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 10:37:59,821 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-ext/23_lu-fig2.fixed.i-witness.graphml [2020-12-22 10:37:59,821 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 10:37:59,823 INFO L168 Benchmark]: Toolchain (without parser) took 6515.27 ms. Allocated memory was 173.0 MB in the beginning and 211.8 MB in the end (delta: 38.8 MB). Free memory was 146.7 MB in the beginning and 145.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 41.4 MB. Max. memory is 8.0 GB. [2020-12-22 10:37:59,823 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 173.0 MB. Free memory is still 146.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 10:37:59,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.33 ms. Allocated memory is still 173.0 MB. Free memory was 146.6 MB in the beginning and 149.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 28.8 MB. Max. memory is 8.0 GB. [2020-12-22 10:37:59,824 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.19 ms. Allocated memory is still 173.0 MB. Free memory was 149.8 MB in the beginning and 148.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 10:37:59,825 INFO L168 Benchmark]: Boogie Preprocessor took 47.99 ms. Allocated memory is still 173.0 MB. Free memory was 148.2 MB in the beginning and 146.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 10:37:59,826 INFO L168 Benchmark]: RCFGBuilder took 1032.47 ms. Allocated memory is still 173.0 MB. Free memory was 146.6 MB in the beginning and 103.6 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. [2020-12-22 10:37:59,826 INFO L168 Benchmark]: TraceAbstraction took 4600.90 ms. Allocated memory was 173.0 MB in the beginning and 211.8 MB in the end (delta: 38.8 MB). Free memory was 103.1 MB in the beginning and 147.7 MB in the end (delta: -44.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 10:37:59,827 INFO L168 Benchmark]: Witness Printer took 72.59 ms. Allocated memory is still 211.8 MB. Free memory was 147.7 MB in the beginning and 145.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 10:37:59,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 173.0 MB. Free memory is still 146.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 654.33 ms. Allocated memory is still 173.0 MB. Free memory was 146.6 MB in the beginning and 149.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 28.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 91.19 ms. Allocated memory is still 173.0 MB. Free memory was 149.8 MB in the beginning and 148.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.99 ms. Allocated memory is still 173.0 MB. Free memory was 148.2 MB in the beginning and 146.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1032.47 ms. Allocated memory is still 173.0 MB. Free memory was 146.6 MB in the beginning and 103.6 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4600.90 ms. Allocated memory was 173.0 MB in the beginning and 211.8 MB in the end (delta: 38.8 MB). Free memory was 103.1 MB in the beginning and 147.7 MB in the end (delta: -44.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 72.59 ms. Allocated memory is still 211.8 MB. Free memory was 147.7 MB in the beginning and 145.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 242 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 23 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 40 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 49 PlacesBefore, 17 PlacesAfterwards, 47 TransitionsBefore, 14 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 36 TotalNumberOfCompositions, 808 MoverChecksTotal - PositiveResult [Line: 707]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 721]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 38 SDtfs, 18 SDslu, 20 SDs, 0 SdLazy, 21 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 525 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...