/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.epf -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-6f57305 [2021-01-26 15:20:41,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-26 15:20:41,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-26 15:20:41,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-26 15:20:41,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-26 15:20:41,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-26 15:20:41,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-26 15:20:41,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-26 15:20:41,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-26 15:20:41,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-26 15:20:41,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-26 15:20:41,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-26 15:20:41,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-26 15:20:41,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-26 15:20:41,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-26 15:20:41,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-26 15:20:41,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-26 15:20:41,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-26 15:20:41,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-26 15:20:41,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-26 15:20:41,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-26 15:20:41,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-26 15:20:41,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-26 15:20:41,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-26 15:20:41,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-26 15:20:41,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-26 15:20:41,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-26 15:20:41,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-26 15:20:41,237 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.epf [2021-01-26 15:20:41,286 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-26 15:20:41,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-26 15:20:41,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-26 15:20:41,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-26 15:20:41,288 INFO L138 SettingsManager]: * Use SBE=true [2021-01-26 15:20:41,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-26 15:20:41,289 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-26 15:20:41,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-26 15:20:41,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-26 15:20:41,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-26 15:20:41,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-26 15:20:41,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-26 15:20:41,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-26 15:20:41,292 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-26 15:20:41,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-26 15:20:41,292 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-26 15:20:41,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-26 15:20:41,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-26 15:20:41,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-26 15:20:41,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-26 15:20:41,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-26 15:20:41,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-26 15:20:41,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-26 15:20:41,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-26 15:20:41,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-26 15:20:41,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-26 15:20:41,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-26 15:20:41,295 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-26 15:20:41,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-26 15:20:41,296 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-26 15:20:41,296 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-26 15:20:41,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-26 15:20:41,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-26 15:20:41,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-26 15:20:41,695 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-26 15:20:41,696 INFO L275 PluginConnector]: CDTParser initialized [2021-01-26 15:20:41,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-01-26 15:20:41,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13edc0206/46ab9edfce404d8e921d5198479f6a33/FLAGc477be704 [2021-01-26 15:20:42,449 INFO L306 CDTParser]: Found 1 translation units. [2021-01-26 15:20:42,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-01-26 15:20:42,473 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13edc0206/46ab9edfce404d8e921d5198479f6a33/FLAGc477be704 [2021-01-26 15:20:42,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13edc0206/46ab9edfce404d8e921d5198479f6a33 [2021-01-26 15:20:42,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-26 15:20:42,782 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-26 15:20:42,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-26 15:20:42,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-26 15:20:42,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-26 15:20:42,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 03:20:42" (1/1) ... [2021-01-26 15:20:42,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de06a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:42, skipping insertion in model container [2021-01-26 15:20:42,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 03:20:42" (1/1) ... [2021-01-26 15:20:42,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-26 15:20:42,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-26 15:20:43,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 15:20:43,277 INFO L203 MainTranslator]: Completed pre-run [2021-01-26 15:20:43,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 15:20:43,441 INFO L208 MainTranslator]: Completed translation [2021-01-26 15:20:43,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:43 WrapperNode [2021-01-26 15:20:43,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-26 15:20:43,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-26 15:20:43,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-26 15:20:43,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-26 15:20:43,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:43" (1/1) ... [2021-01-26 15:20:43,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:43" (1/1) ... [2021-01-26 15:20:43,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-26 15:20:43,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-26 15:20:43,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-26 15:20:43,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-26 15:20:43,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:43" (1/1) ... [2021-01-26 15:20:43,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:43" (1/1) ... [2021-01-26 15:20:43,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:43" (1/1) ... [2021-01-26 15:20:43,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:43" (1/1) ... [2021-01-26 15:20:43,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:43" (1/1) ... [2021-01-26 15:20:43,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:43" (1/1) ... [2021-01-26 15:20:43,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:43" (1/1) ... [2021-01-26 15:20:43,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-26 15:20:43,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-26 15:20:43,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-26 15:20:43,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-26 15:20:43,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:43" (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 [2021-01-26 15:20:43,597 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-01-26 15:20:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-01-26 15:20:43,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-26 15:20:43,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-26 15:20:43,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-26 15:20:43,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-26 15:20:43,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-26 15:20:43,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-26 15:20:43,600 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-26 15:20:44,094 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-26 15:20:44,094 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2021-01-26 15:20:44,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 03:20:44 BoogieIcfgContainer [2021-01-26 15:20:44,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-26 15:20:44,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-26 15:20:44,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-26 15:20:44,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-26 15:20:44,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.01 03:20:42" (1/3) ... [2021-01-26 15:20:44,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cad9f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 03:20:44, skipping insertion in model container [2021-01-26 15:20:44,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:20:43" (2/3) ... [2021-01-26 15:20:44,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cad9f42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 03:20:44, skipping insertion in model container [2021-01-26 15:20:44,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 03:20:44" (3/3) ... [2021-01-26 15:20:44,110 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2021-01-26 15:20:44,125 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-26 15:20:44,125 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-26 15:20:44,129 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-26 15:20:44,130 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-26 15:20:44,174 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,174 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,175 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,175 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,175 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,175 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,175 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,176 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,176 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,176 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,177 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 15:20:44,195 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-26 15:20:44,209 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-26 15:20:44,248 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-26 15:20:44,248 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-26 15:20:44,248 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-26 15:20:44,249 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-26 15:20:44,249 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-26 15:20:44,250 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-26 15:20:44,250 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-26 15:20:44,250 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-26 15:20:44,268 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 74 places, 96 transitions, 197 flow [2021-01-26 15:20:44,343 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 774 states, 770 states have (on average 2.8636363636363638) internal successors, (2205), 773 states have internal predecessors, (2205), 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) [2021-01-26 15:20:44,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 774 states, 770 states have (on average 2.8636363636363638) internal successors, (2205), 773 states have internal predecessors, (2205), 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) [2021-01-26 15:20:44,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-26 15:20:44,369 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 15:20:44,370 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] [2021-01-26 15:20:44,371 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 15:20:44,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 15:20:44,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1965527308, now seen corresponding path program 1 times [2021-01-26 15:20:44,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 15:20:44,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053348985] [2021-01-26 15:20:44,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 15:20:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 15:20:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 15:20:44,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053348985] [2021-01-26 15:20:44,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 15:20:44,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-26 15:20:44,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114611285] [2021-01-26 15:20:44,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-26 15:20:44,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 15:20:44,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-26 15:20:44,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-26 15:20:44,699 INFO L87 Difference]: Start difference. First operand has 774 states, 770 states have (on average 2.8636363636363638) internal successors, (2205), 773 states have internal predecessors, (2205), 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 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2021-01-26 15:20:44,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 15:20:44,748 INFO L93 Difference]: Finished difference Result 411 states and 1007 transitions. [2021-01-26 15:20:44,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-26 15:20:44,751 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2021-01-26 15:20:44,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 15:20:44,769 INFO L225 Difference]: With dead ends: 411 [2021-01-26 15:20:44,770 INFO L226 Difference]: Without dead ends: 411 [2021-01-26 15:20:44,771 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-26 15:20:44,772 INFO L78 Accepts]: Start accepts. Automaton has 411 states. Word has length 28 [2021-01-26 15:20:44,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 15:20:44,773 INFO L481 AbstractCegarLoop]: Abstraction has 411 states. [2021-01-26 15:20:44,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2021-01-26 15:20:44,773 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states. [2021-01-26 15:20:44,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-01-26 15:20:44,777 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 15:20:44,777 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] [2021-01-26 15:20:44,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-26 15:20:44,778 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 15:20:44,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 15:20:44,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1797642954, now seen corresponding path program 1 times [2021-01-26 15:20:44,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 15:20:44,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878448011] [2021-01-26 15:20:44,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 15:20:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 15:20:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 15:20:44,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878448011] [2021-01-26 15:20:44,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 15:20:44,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-26 15:20:44,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994774438] [2021-01-26 15:20:44,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-26 15:20:44,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 15:20:44,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-26 15:20:44,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-26 15:20:44,860 INFO L87 Difference]: Start difference. First operand 411 states. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-01-26 15:20:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 15:20:44,900 INFO L93 Difference]: Finished difference Result 622 states and 1570 transitions. [2021-01-26 15:20:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-26 15:20:44,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-01-26 15:20:44,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 15:20:44,912 INFO L225 Difference]: With dead ends: 622 [2021-01-26 15:20:44,912 INFO L226 Difference]: Without dead ends: 622 [2021-01-26 15:20:44,913 INFO L769 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 [2021-01-26 15:20:44,913 INFO L78 Accepts]: Start accepts. Automaton has 622 states. Word has length 28 [2021-01-26 15:20:44,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 15:20:44,914 INFO L481 AbstractCegarLoop]: Abstraction has 622 states. [2021-01-26 15:20:44,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-01-26 15:20:44,914 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states. [2021-01-26 15:20:44,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-26 15:20:44,917 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 15:20:44,917 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] [2021-01-26 15:20:44,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-26 15:20:44,918 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 15:20:44,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 15:20:44,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1292248925, now seen corresponding path program 1 times [2021-01-26 15:20:44,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 15:20:44,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729770884] [2021-01-26 15:20:44,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 15:20:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 15:20:45,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 15:20:45,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729770884] [2021-01-26 15:20:45,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 15:20:45,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-26 15:20:45,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850072844] [2021-01-26 15:20:45,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-26 15:20:45,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 15:20:45,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-26 15:20:45,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-26 15:20:45,031 INFO L87 Difference]: Start difference. First operand 622 states. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 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) [2021-01-26 15:20:45,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 15:20:45,075 INFO L93 Difference]: Finished difference Result 550 states and 1393 transitions. [2021-01-26 15:20:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-26 15:20:45,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 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 [2021-01-26 15:20:45,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 15:20:45,081 INFO L225 Difference]: With dead ends: 550 [2021-01-26 15:20:45,081 INFO L226 Difference]: Without dead ends: 550 [2021-01-26 15:20:45,082 INFO L769 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 [2021-01-26 15:20:45,082 INFO L78 Accepts]: Start accepts. Automaton has 550 states. Word has length 32 [2021-01-26 15:20:45,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 15:20:45,082 INFO L481 AbstractCegarLoop]: Abstraction has 550 states. [2021-01-26 15:20:45,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 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) [2021-01-26 15:20:45,083 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states. [2021-01-26 15:20:45,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-26 15:20:45,086 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 15:20:45,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 15:20:45,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-26 15:20:45,087 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 15:20:45,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 15:20:45,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1543968972, now seen corresponding path program 1 times [2021-01-26 15:20:45,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 15:20:45,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730859404] [2021-01-26 15:20:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 15:20:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 15:20:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 15:20:45,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730859404] [2021-01-26 15:20:45,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 15:20:45,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-26 15:20:45,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669074993] [2021-01-26 15:20:45,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-26 15:20:45,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 15:20:45,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-26 15:20:45,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-26 15:20:45,146 INFO L87 Difference]: Start difference. First operand 550 states. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-01-26 15:20:45,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 15:20:45,197 INFO L93 Difference]: Finished difference Result 572 states and 1391 transitions. [2021-01-26 15:20:45,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-26 15:20:45,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2021-01-26 15:20:45,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 15:20:45,203 INFO L225 Difference]: With dead ends: 572 [2021-01-26 15:20:45,203 INFO L226 Difference]: Without dead ends: 572 [2021-01-26 15:20:45,203 INFO L769 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 [2021-01-26 15:20:45,204 INFO L78 Accepts]: Start accepts. Automaton has 572 states. Word has length 41 [2021-01-26 15:20:45,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 15:20:45,204 INFO L481 AbstractCegarLoop]: Abstraction has 572 states. [2021-01-26 15:20:45,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-01-26 15:20:45,205 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states. [2021-01-26 15:20:45,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-26 15:20:45,207 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 15:20:45,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 15:20:45,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-26 15:20:45,208 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 15:20:45,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 15:20:45,209 INFO L82 PathProgramCache]: Analyzing trace with hash 24608808, now seen corresponding path program 1 times [2021-01-26 15:20:45,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 15:20:45,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573777728] [2021-01-26 15:20:45,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 15:20:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 15:20:45,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 15:20:45,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573777728] [2021-01-26 15:20:45,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 15:20:45,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-26 15:20:45,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075814547] [2021-01-26 15:20:45,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-26 15:20:45,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 15:20:45,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-26 15:20:45,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-26 15:20:45,265 INFO L87 Difference]: Start difference. First operand 572 states. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-01-26 15:20:45,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 15:20:45,322 INFO L93 Difference]: Finished difference Result 564 states and 1349 transitions. [2021-01-26 15:20:45,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-26 15:20:45,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2021-01-26 15:20:45,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 15:20:45,328 INFO L225 Difference]: With dead ends: 564 [2021-01-26 15:20:45,328 INFO L226 Difference]: Without dead ends: 564 [2021-01-26 15:20:45,329 INFO L769 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 [2021-01-26 15:20:45,329 INFO L78 Accepts]: Start accepts. Automaton has 564 states. Word has length 41 [2021-01-26 15:20:45,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 15:20:45,329 INFO L481 AbstractCegarLoop]: Abstraction has 564 states. [2021-01-26 15:20:45,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-01-26 15:20:45,330 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states. [2021-01-26 15:20:45,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-26 15:20:45,332 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 15:20:45,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-26 15:20:45,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-26 15:20:45,333 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 15:20:45,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 15:20:45,333 INFO L82 PathProgramCache]: Analyzing trace with hash -297439550, now seen corresponding path program 2 times [2021-01-26 15:20:45,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 15:20:45,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211158034] [2021-01-26 15:20:45,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 15:20:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 15:20:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 15:20:45,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211158034] [2021-01-26 15:20:45,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 15:20:45,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-26 15:20:45,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381502727] [2021-01-26 15:20:45,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-26 15:20:45,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 15:20:45,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-26 15:20:45,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-26 15:20:45,380 INFO L87 Difference]: Start difference. First operand 564 states. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-01-26 15:20:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 15:20:45,431 INFO L93 Difference]: Finished difference Result 452 states and 1059 transitions. [2021-01-26 15:20:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-26 15:20:45,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2021-01-26 15:20:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 15:20:45,432 INFO L225 Difference]: With dead ends: 452 [2021-01-26 15:20:45,432 INFO L226 Difference]: Without dead ends: 0 [2021-01-26 15:20:45,433 INFO L769 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 [2021-01-26 15:20:45,433 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 41 [2021-01-26 15:20:45,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 15:20:45,433 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-26 15:20:45,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2021-01-26 15:20:45,434 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-26 15:20:45,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-26 15:20:45,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-26 15:20:45,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.01 03:20:45 BasicIcfg [2021-01-26 15:20:45,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-26 15:20:45,442 INFO L168 Benchmark]: Toolchain (without parser) took 2668.10 ms. Allocated memory is still 302.0 MB. Free memory was 273.5 MB in the beginning and 151.1 MB in the end (delta: 122.4 MB). Peak memory consumption was 119.9 MB. Max. memory is 16.0 GB. [2021-01-26 15:20:45,443 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-26 15:20:45,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.45 ms. Allocated memory is still 302.0 MB. Free memory was 272.4 MB in the beginning and 264.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-01-26 15:20:45,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.73 ms. Allocated memory is still 302.0 MB. Free memory was 264.3 MB in the beginning and 262.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-26 15:20:45,445 INFO L168 Benchmark]: Boogie Preprocessor took 31.24 ms. Allocated memory is still 302.0 MB. Free memory was 262.2 MB in the beginning and 261.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-26 15:20:45,446 INFO L168 Benchmark]: RCFGBuilder took 574.20 ms. Allocated memory is still 302.0 MB. Free memory was 261.2 MB in the beginning and 238.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-26 15:20:45,447 INFO L168 Benchmark]: TraceAbstraction took 1337.38 ms. Allocated memory is still 302.0 MB. Free memory was 237.1 MB in the beginning and 151.1 MB in the end (delta: 86.0 MB). Peak memory consumption was 86.0 MB. Max. memory is 16.0 GB. [2021-01-26 15:20:45,451 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 302.0 MB. Free memory is still 272.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 658.45 ms. Allocated memory is still 302.0 MB. Free memory was 272.4 MB in the beginning and 264.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 47.73 ms. Allocated memory is still 302.0 MB. Free memory was 264.3 MB in the beginning and 262.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.24 ms. Allocated memory is still 302.0 MB. Free memory was 262.2 MB in the beginning and 261.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 574.20 ms. Allocated memory is still 302.0 MB. Free memory was 261.2 MB in the beginning and 238.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1337.38 ms. Allocated memory is still 302.0 MB. Free memory was 237.1 MB in the beginning and 151.1 MB in the end (delta: 86.0 MB). Peak memory consumption was 86.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: 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, 71 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 484 SDtfs, 164 SDslu, 222 SDs, 0 SdLazy, 76 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=774occurred 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, 0.2s InterpolantComputationTime, 211 NumberOfCodeBlocks, 211 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 205 ConstructedInterpolants, 0 QuantifiedInterpolants, 9175 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...