/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-aa1e80b [2020-12-17 21:20:04,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-17 21:20:04,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-17 21:20:04,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-17 21:20:04,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-17 21:20:04,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-17 21:20:04,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-17 21:20:04,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-17 21:20:04,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-17 21:20:04,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-17 21:20:04,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-17 21:20:04,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-17 21:20:04,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-17 21:20:04,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-17 21:20:04,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-17 21:20:04,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-17 21:20:04,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-17 21:20:04,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-17 21:20:04,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-17 21:20:04,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-17 21:20:04,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-17 21:20:04,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-17 21:20:04,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-17 21:20:04,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-17 21:20:04,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-17 21:20:04,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-17 21:20:04,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-17 21:20:04,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-17 21:20:04,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-17 21:20:04,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-17 21:20:04,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-17 21:20:04,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-17 21:20:04,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-17 21:20:04,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-17 21:20:04,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-17 21:20:04,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-17 21:20:04,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-17 21:20:04,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-17 21:20:04,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-17 21:20:04,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-17 21:20:04,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-17 21:20:04,795 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf [2020-12-17 21:20:04,841 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-17 21:20:04,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-17 21:20:04,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-17 21:20:04,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-17 21:20:04,843 INFO L138 SettingsManager]: * Use SBE=true [2020-12-17 21:20:04,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-17 21:20:04,844 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-17 21:20:04,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-17 21:20:04,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-17 21:20:04,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-17 21:20:04,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-17 21:20:04,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-17 21:20:04,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-17 21:20:04,845 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-17 21:20:04,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-17 21:20:04,846 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-17 21:20:04,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-17 21:20:04,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-17 21:20:04,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-17 21:20:04,847 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-17 21:20:04,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-17 21:20:04,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-17 21:20:04,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-17 21:20:04,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-17 21:20:04,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-17 21:20:04,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-17 21:20:04,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-17 21:20:04,849 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-12-17 21:20:04,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-17 21:20:04,849 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2020-12-17 21:20:04,849 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2020-12-17 21:20:04,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-17 21:20:05,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-17 21:20:05,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-17 21:20:05,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-17 21:20:05,253 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-17 21:20:05,257 INFO L275 PluginConnector]: CDTParser initialized [2020-12-17 21:20:05,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2020-12-17 21:20:05,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d908a291a/bc201dfd808540cb93148e35848747b6/FLAG77d81f827 [2020-12-17 21:20:06,082 INFO L306 CDTParser]: Found 1 translation units. [2020-12-17 21:20:06,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2020-12-17 21:20:06,101 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d908a291a/bc201dfd808540cb93148e35848747b6/FLAG77d81f827 [2020-12-17 21:20:06,360 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d908a291a/bc201dfd808540cb93148e35848747b6 [2020-12-17 21:20:06,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-17 21:20:06,365 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-17 21:20:06,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-17 21:20:06,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-17 21:20:06,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-17 21:20:06,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:20:06" (1/1) ... [2020-12-17 21:20:06,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29dc2a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:20:06, skipping insertion in model container [2020-12-17 21:20:06,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:20:06" (1/1) ... [2020-12-17 21:20:06,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-17 21:20:06,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-17 21:20:06,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 21:20:06,862 INFO L203 MainTranslator]: Completed pre-run [2020-12-17 21:20:06,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 21:20:07,004 INFO L208 MainTranslator]: Completed translation [2020-12-17 21:20:07,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:20:07 WrapperNode [2020-12-17 21:20:07,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-17 21:20:07,006 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-17 21:20:07,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-17 21:20:07,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-17 21:20:07,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:20:07" (1/1) ... [2020-12-17 21:20:07,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:20:07" (1/1) ... [2020-12-17 21:20:07,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-17 21:20:07,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-17 21:20:07,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-17 21:20:07,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-17 21:20:07,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:20:07" (1/1) ... [2020-12-17 21:20:07,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:20:07" (1/1) ... [2020-12-17 21:20:07,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:20:07" (1/1) ... [2020-12-17 21:20:07,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:20:07" (1/1) ... [2020-12-17 21:20:07,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:20:07" (1/1) ... [2020-12-17 21:20:07,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:20:07" (1/1) ... [2020-12-17 21:20:07,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:20:07" (1/1) ... [2020-12-17 21:20:07,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-17 21:20:07,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-17 21:20:07,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-17 21:20:07,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-17 21:20:07,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:20:07" (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 [2020-12-17 21:20:07,227 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-12-17 21:20:07,227 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-12-17 21:20:07,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-17 21:20:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-17 21:20:07,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-17 21:20:07,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-17 21:20:07,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-17 21:20:07,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-17 21:20:07,233 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-17 21:20:07,955 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-17 21:20:07,955 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-17 21:20:07,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:20:07 BoogieIcfgContainer [2020-12-17 21:20:07,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-17 21:20:07,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-17 21:20:07,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-17 21:20:07,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-17 21:20:07,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 09:20:06" (1/3) ... [2020-12-17 21:20:07,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1249cc48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:20:07, skipping insertion in model container [2020-12-17 21:20:07,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:20:07" (2/3) ... [2020-12-17 21:20:07,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1249cc48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:20:07, skipping insertion in model container [2020-12-17 21:20:07,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:20:07" (3/3) ... [2020-12-17 21:20:07,968 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2020-12-17 21:20:07,986 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-17 21:20:07,986 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-17 21:20:07,991 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-17 21:20:07,992 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-17 21:20:08,019 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,019 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,020 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,020 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,020 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,020 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,020 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,021 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,022 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,022 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,022 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,023 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,023 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,023 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,023 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,024 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,024 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,024 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,024 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,024 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,025 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,025 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,025 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,025 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,025 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,026 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,026 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,026 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,026 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,026 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,026 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,027 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,027 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,027 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,027 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,027 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,027 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,027 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,028 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,028 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,028 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,029 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,029 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,029 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,029 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,029 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,032 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,032 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,033 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,033 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,033 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,034 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,034 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 21:20:08,036 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-17 21:20:08,051 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-17 21:20:08,076 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-17 21:20:08,076 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-17 21:20:08,076 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-17 21:20:08,076 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-17 21:20:08,077 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-17 21:20:08,077 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-17 21:20:08,077 INFO L383 AbstractCegarLoop]: Minimize is NONE [2020-12-17 21:20:08,077 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-17 21:20:08,089 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 47 transitions, 99 flow [2020-12-17 21:20:08,114 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 216 states, 212 states have (on average 1.9150943396226414) internal successors, (406), 215 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 21:20:08,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 212 states have (on average 1.9150943396226414) internal successors, (406), 215 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 21:20:08,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-17 21:20:08,126 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 21:20:08,127 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 21:20:08,127 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 21:20:08,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 21:20:08,134 INFO L82 PathProgramCache]: Analyzing trace with hash 2060083358, now seen corresponding path program 1 times [2020-12-17 21:20:08,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 21:20:08,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290126558] [2020-12-17 21:20:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 21:20:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 21:20:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 21:20:08,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290126558] [2020-12-17 21:20:08,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 21:20:08,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-17 21:20:08,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659282819] [2020-12-17 21:20:08,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-17 21:20:08,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 21:20:08,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-17 21:20:08,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-17 21:20:08,433 INFO L87 Difference]: Start difference. First operand has 216 states, 212 states have (on average 1.9150943396226414) internal successors, (406), 215 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 21:20:08,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 21:20:08,492 INFO L93 Difference]: Finished difference Result 151 states and 266 transitions. [2020-12-17 21:20:08,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-17 21:20:08,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2020-12-17 21:20:08,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 21:20:08,499 INFO L763 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 [2020-12-17 21:20:08,500 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 266 transitions. Word has length 21 [2020-12-17 21:20:08,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 21:20:08,501 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 266 transitions. [2020-12-17 21:20:08,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 21:20:08,501 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 266 transitions. [2020-12-17 21:20:08,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-17 21:20:08,506 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 21:20:08,507 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 21:20:08,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-17 21:20:08,512 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 21:20:08,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 21:20:08,515 INFO L82 PathProgramCache]: Analyzing trace with hash 457581125, now seen corresponding path program 1 times [2020-12-17 21:20:08,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 21:20:08,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334036175] [2020-12-17 21:20:08,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 21:20:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 21:20:08,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 21:20:08,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334036175] [2020-12-17 21:20:08,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 21:20:08,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-17 21:20:08,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788037740] [2020-12-17 21:20:08,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-17 21:20:08,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 21:20:08,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-17 21:20:08,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-17 21:20:08,660 INFO L87 Difference]: Start difference. First operand 151 states and 266 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 21:20:08,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 21:20:08,676 INFO L93 Difference]: Finished difference Result 140 states and 243 transitions. [2020-12-17 21:20:08,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-17 21:20:08,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2020-12-17 21:20:08,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 21:20:08,680 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-17 21:20:08,681 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 243 transitions. Word has length 26 [2020-12-17 21:20:08,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 21:20:08,681 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 243 transitions. [2020-12-17 21:20:08,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 21:20:08,682 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 243 transitions. [2020-12-17 21:20:08,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-17 21:20:08,684 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 21:20:08,684 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 21:20:08,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-17 21:20:08,684 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 21:20:08,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 21:20:08,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1252968259, now seen corresponding path program 1 times [2020-12-17 21:20:08,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 21:20:08,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771802278] [2020-12-17 21:20:08,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 21:20:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 21:20:08,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 21:20:08,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771802278] [2020-12-17 21:20:08,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 21:20:08,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-17 21:20:08,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060331544] [2020-12-17 21:20:08,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-17 21:20:08,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 21:20:08,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-17 21:20:08,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-17 21:20:08,845 INFO L87 Difference]: Start difference. First operand 140 states and 243 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 21:20:08,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 21:20:08,892 INFO L93 Difference]: Finished difference Result 123 states and 207 transitions. [2020-12-17 21:20:08,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-17 21:20:08,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2020-12-17 21:20:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 21:20:08,894 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-17 21:20:08,894 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 207 transitions. Word has length 30 [2020-12-17 21:20:08,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 21:20:08,895 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 207 transitions. [2020-12-17 21:20:08,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 21:20:08,895 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 207 transitions. [2020-12-17 21:20:08,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-17 21:20:08,897 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 21:20:08,897 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 21:20:08,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-17 21:20:08,897 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 21:20:08,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 21:20:08,898 INFO L82 PathProgramCache]: Analyzing trace with hash 337925380, now seen corresponding path program 1 times [2020-12-17 21:20:08,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 21:20:08,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113901234] [2020-12-17 21:20:08,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 21:20:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 21:20:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 21:20:08,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113901234] [2020-12-17 21:20:08,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 21:20:08,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-17 21:20:08,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263083156] [2020-12-17 21:20:08,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-17 21:20:08,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 21:20:08,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-17 21:20:08,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-17 21:20:08,996 INFO L87 Difference]: Start difference. First operand 123 states and 207 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 21:20:09,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 21:20:09,010 INFO L93 Difference]: Finished difference Result 120 states and 202 transitions. [2020-12-17 21:20:09,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-17 21:20:09,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2020-12-17 21:20:09,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 21:20:09,012 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-17 21:20:09,012 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 202 transitions. Word has length 32 [2020-12-17 21:20:09,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 21:20:09,013 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 202 transitions. [2020-12-17 21:20:09,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 21:20:09,013 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 202 transitions. [2020-12-17 21:20:09,014 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-17 21:20:09,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-17 21:20:09,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 09:20:09 BasicIcfg [2020-12-17 21:20:09,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-17 21:20:09,023 INFO L168 Benchmark]: Toolchain (without parser) took 2656.84 ms. Allocated memory is still 302.0 MB. Free memory was 277.4 MB in the beginning and 181.9 MB in the end (delta: 95.6 MB). Peak memory consumption was 94.8 MB. Max. memory is 16.0 GB. [2020-12-17 21:20:09,023 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 21:20:09,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.00 ms. Allocated memory is still 302.0 MB. Free memory was 277.2 MB in the beginning and 247.6 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2020-12-17 21:20:09,025 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.40 ms. Allocated memory is still 302.0 MB. Free memory was 247.6 MB in the beginning and 245.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-12-17 21:20:09,026 INFO L168 Benchmark]: Boogie Preprocessor took 31.89 ms. Allocated memory is still 302.0 MB. Free memory was 245.5 MB in the beginning and 244.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-12-17 21:20:09,027 INFO L168 Benchmark]: RCFGBuilder took 864.88 ms. Allocated memory is still 302.0 MB. Free memory was 244.0 MB in the beginning and 238.5 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. [2020-12-17 21:20:09,028 INFO L168 Benchmark]: TraceAbstraction took 1060.50 ms. Allocated memory is still 302.0 MB. Free memory was 238.5 MB in the beginning and 181.9 MB in the end (delta: 56.6 MB). Peak memory consumption was 56.6 MB. Max. memory is 16.0 GB. [2020-12-17 21:20:09,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 639.00 ms. Allocated memory is still 302.0 MB. Free memory was 277.2 MB in the beginning and 247.6 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 53.40 ms. Allocated memory is still 302.0 MB. Free memory was 247.6 MB in the beginning and 245.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.89 ms. Allocated memory is still 302.0 MB. Free memory was 245.5 MB in the beginning and 244.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 864.88 ms. Allocated memory is still 302.0 MB. Free memory was 244.0 MB in the beginning and 238.5 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1060.50 ms. Allocated memory is still 302.0 MB. Free memory was 238.5 MB in the beginning and 181.9 MB in the end (delta: 56.6 MB). Peak memory consumption was 56.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 16]: 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, 46 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 194 SDtfs, 45 SDslu, 245 SDs, 0 SdLazy, 32 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 6590 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...