/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/19_time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 14:35:50,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 14:35:50,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 14:35:50,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 14:35:50,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 14:35:50,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 14:35:50,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 14:35:50,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 14:35:50,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 14:35:50,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 14:35:50,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 14:35:50,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 14:35:50,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 14:35:50,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 14:35:50,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 14:35:50,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 14:35:50,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 14:35:50,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 14:35:50,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 14:35:50,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 14:35:50,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 14:35:50,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 14:35:50,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 14:35:50,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 14:35:50,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 14:35:50,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 14:35:50,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 14:35:50,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 14:35:50,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 14:35:50,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 14:35:50,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 14:35:50,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 14:35:50,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 14:35:50,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 14:35:50,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 14:35:50,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 14:35:50,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 14:35:50,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 14:35:50,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 14:35:50,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 14:35:50,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 14:35:50,329 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 14:35:50,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 14:35:50,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 14:35:50,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 14:35:50,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 14:35:50,356 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 14:35:50,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 14:35:50,356 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 14:35:50,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 14:35:50,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 14:35:50,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 14:35:50,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 14:35:50,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 14:35:50,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 14:35:50,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 14:35:50,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 14:35:50,358 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 14:35:50,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 14:35:50,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 14:35:50,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 14:35:50,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 14:35:50,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 14:35:50,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 14:35:50,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 14:35:50,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 14:35:50,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 14:35:50,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 14:35:50,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 14:35:50,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 14:35:50,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 14:35:50,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 14:35:50,633 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 14:35:50,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 14:35:50,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 14:35:50,649 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 14:35:50,650 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 14:35:50,651 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/19_time_var_mutex.i [2020-04-17 14:35:50,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a00261d06/44bde99db88b49b2aa211def8613253c/FLAG8ccf0536b [2020-04-17 14:35:51,284 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 14:35:51,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/19_time_var_mutex.i [2020-04-17 14:35:51,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a00261d06/44bde99db88b49b2aa211def8613253c/FLAG8ccf0536b [2020-04-17 14:35:51,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a00261d06/44bde99db88b49b2aa211def8613253c [2020-04-17 14:35:51,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 14:35:51,626 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 14:35:51,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 14:35:51,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 14:35:51,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 14:35:51,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 02:35:51" (1/1) ... [2020-04-17 14:35:51,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c7e11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:51, skipping insertion in model container [2020-04-17 14:35:51,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 02:35:51" (1/1) ... [2020-04-17 14:35:51,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 14:35:51,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 14:35:52,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 14:35:52,212 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 14:35:52,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 14:35:52,355 INFO L208 MainTranslator]: Completed translation [2020-04-17 14:35:52,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:52 WrapperNode [2020-04-17 14:35:52,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 14:35:52,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 14:35:52,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 14:35:52,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 14:35:52,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:52" (1/1) ... [2020-04-17 14:35:52,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:52" (1/1) ... [2020-04-17 14:35:52,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 14:35:52,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 14:35:52,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 14:35:52,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 14:35:52,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:52" (1/1) ... [2020-04-17 14:35:52,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:52" (1/1) ... [2020-04-17 14:35:52,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:52" (1/1) ... [2020-04-17 14:35:52,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:52" (1/1) ... [2020-04-17 14:35:52,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:52" (1/1) ... [2020-04-17 14:35:52,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:52" (1/1) ... [2020-04-17 14:35:52,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:52" (1/1) ... [2020-04-17 14:35:52,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 14:35:52,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 14:35:52,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 14:35:52,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 14:35:52,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:52" (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 [2020-04-17 14:35:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-17 14:35:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-17 14:35:52,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-17 14:35:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 14:35:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 14:35:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 14:35:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-04-17 14:35:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 14:35:52,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 14:35:52,525 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 14:35:53,586 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 14:35:53,586 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-04-17 14:35:53,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 02:35:53 BoogieIcfgContainer [2020-04-17 14:35:53,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 14:35:53,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 14:35:53,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 14:35:53,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 14:35:53,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 02:35:51" (1/3) ... [2020-04-17 14:35:53,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbcd474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 02:35:53, skipping insertion in model container [2020-04-17 14:35:53,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 02:35:52" (2/3) ... [2020-04-17 14:35:53,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbcd474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 02:35:53, skipping insertion in model container [2020-04-17 14:35:53,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 02:35:53" (3/3) ... [2020-04-17 14:35:53,599 INFO L109 eAbstractionObserver]: Analyzing ICFG 19_time_var_mutex.i [2020-04-17 14:35:53,611 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 14:35:53,611 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 14:35:53,621 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-04-17 14:35:53,623 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 14:35:53,652 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,652 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,652 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,653 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,653 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,654 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,654 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,654 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,654 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,654 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,654 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,655 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,655 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,655 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,655 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,656 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,656 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,656 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,657 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,657 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,657 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,657 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,657 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,658 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,658 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,658 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,659 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,659 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,659 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,659 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,659 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,659 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,661 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,662 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,669 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,670 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,670 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,670 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,670 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,670 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,671 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,672 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,672 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,673 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,673 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,673 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,674 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,674 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,674 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,674 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 14:35:53,688 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 14:35:53,705 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 14:35:53,705 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 14:35:53,705 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 14:35:53,705 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 14:35:53,706 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 14:35:53,706 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 14:35:53,706 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 14:35:53,706 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 14:35:53,721 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 54 transitions, 113 flow [2020-04-17 14:35:53,723 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 54 places, 54 transitions, 113 flow [2020-04-17 14:35:53,758 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2020-04-17 14:35:53,758 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 14:35:53,763 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 53 events. 4/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 38. Up to 3 conditions per place. [2020-04-17 14:35:53,765 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 54 places, 54 transitions, 113 flow [2020-04-17 14:35:53,779 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2020-04-17 14:35:53,780 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 14:35:53,780 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 53 events. 4/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 38. Up to 3 conditions per place. [2020-04-17 14:35:53,782 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 704 [2020-04-17 14:35:53,783 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 14:35:56,204 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-04-17 14:35:56,631 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1545 [2020-04-17 14:35:56,631 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2020-04-17 14:35:56,635 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 20 transitions, 45 flow [2020-04-17 14:35:56,646 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 65 states. [2020-04-17 14:35:56,648 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-04-17 14:35:56,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-17 14:35:56,655 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:35:56,656 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-17 14:35:56,656 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 14:35:56,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:35:56,664 INFO L82 PathProgramCache]: Analyzing trace with hash 437579698, now seen corresponding path program 1 times [2020-04-17 14:35:56,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:35:56,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32715608] [2020-04-17 14:35:56,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:35:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:35:56,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 14:35:56,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32715608] [2020-04-17 14:35:56,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:35:56,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 14:35:56,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904539392] [2020-04-17 14:35:56,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 14:35:56,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:35:56,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 14:35:56,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 14:35:56,955 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-04-17 14:35:56,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:35:56,993 INFO L93 Difference]: Finished difference Result 65 states and 121 transitions. [2020-04-17 14:35:56,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 14:35:56,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-04-17 14:35:56,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:35:57,030 INFO L225 Difference]: With dead ends: 65 [2020-04-17 14:35:57,030 INFO L226 Difference]: Without dead ends: 59 [2020-04-17 14:35:57,034 INFO L678 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 [2020-04-17 14:35:57,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-04-17 14:35:57,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-04-17 14:35:57,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-04-17 14:35:57,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 107 transitions. [2020-04-17 14:35:57,096 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 107 transitions. Word has length 5 [2020-04-17 14:35:57,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:35:57,104 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 107 transitions. [2020-04-17 14:35:57,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 14:35:57,104 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 107 transitions. [2020-04-17 14:35:57,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-04-17 14:35:57,105 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:35:57,105 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-04-17 14:35:57,106 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 14:35:57,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:35:57,107 INFO L82 PathProgramCache]: Analyzing trace with hash 437606162, now seen corresponding path program 1 times [2020-04-17 14:35:57,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:35:57,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23977304] [2020-04-17 14:35:57,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:35:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:35:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 14:35:57,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23977304] [2020-04-17 14:35:57,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:35:57,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 14:35:57,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393656541] [2020-04-17 14:35:57,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 14:35:57,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:35:57,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 14:35:57,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 14:35:57,199 INFO L87 Difference]: Start difference. First operand 59 states and 107 transitions. Second operand 3 states. [2020-04-17 14:35:57,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:35:57,223 INFO L93 Difference]: Finished difference Result 62 states and 103 transitions. [2020-04-17 14:35:57,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 14:35:57,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-04-17 14:35:57,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:35:57,227 INFO L225 Difference]: With dead ends: 62 [2020-04-17 14:35:57,228 INFO L226 Difference]: Without dead ends: 56 [2020-04-17 14:35:57,229 INFO L678 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 [2020-04-17 14:35:57,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-04-17 14:35:57,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-04-17 14:35:57,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-17 14:35:57,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 90 transitions. [2020-04-17 14:35:57,242 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 90 transitions. Word has length 5 [2020-04-17 14:35:57,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:35:57,242 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 90 transitions. [2020-04-17 14:35:57,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 14:35:57,243 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 90 transitions. [2020-04-17 14:35:57,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 14:35:57,243 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:35:57,244 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 14:35:57,244 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 14:35:57,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:35:57,244 INFO L82 PathProgramCache]: Analyzing trace with hash 717788710, now seen corresponding path program 1 times [2020-04-17 14:35:57,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:35:57,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041743052] [2020-04-17 14:35:57,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:35:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:35:57,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 14:35:57,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041743052] [2020-04-17 14:35:57,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:35:57,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 14:35:57,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733290183] [2020-04-17 14:35:57,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 14:35:57,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:35:57,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 14:35:57,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 14:35:57,333 INFO L87 Difference]: Start difference. First operand 52 states and 90 transitions. Second operand 3 states. [2020-04-17 14:35:57,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:35:57,350 INFO L93 Difference]: Finished difference Result 49 states and 80 transitions. [2020-04-17 14:35:57,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 14:35:57,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 14:35:57,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:35:57,355 INFO L225 Difference]: With dead ends: 49 [2020-04-17 14:35:57,356 INFO L226 Difference]: Without dead ends: 31 [2020-04-17 14:35:57,356 INFO L678 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 [2020-04-17 14:35:57,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-04-17 14:35:57,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-04-17 14:35:57,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-04-17 14:35:57,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-04-17 14:35:57,370 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 8 [2020-04-17 14:35:57,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:35:57,371 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-04-17 14:35:57,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 14:35:57,372 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-04-17 14:35:57,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 14:35:57,373 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:35:57,373 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 14:35:57,373 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 14:35:57,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:35:57,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1694752226, now seen corresponding path program 1 times [2020-04-17 14:35:57,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:35:57,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823845432] [2020-04-17 14:35:57,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:35:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:35:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 14:35:57,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823845432] [2020-04-17 14:35:57,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:35:57,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 14:35:57,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899232100] [2020-04-17 14:35:57,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 14:35:57,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:35:57,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 14:35:57,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 14:35:57,454 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 3 states. [2020-04-17 14:35:57,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:35:57,462 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2020-04-17 14:35:57,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 14:35:57,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 14:35:57,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:35:57,465 INFO L225 Difference]: With dead ends: 31 [2020-04-17 14:35:57,466 INFO L226 Difference]: Without dead ends: 28 [2020-04-17 14:35:57,466 INFO L678 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 [2020-04-17 14:35:57,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-04-17 14:35:57,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-04-17 14:35:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-04-17 14:35:57,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2020-04-17 14:35:57,472 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 10 [2020-04-17 14:35:57,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:35:57,472 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2020-04-17 14:35:57,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 14:35:57,472 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2020-04-17 14:35:57,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 14:35:57,472 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 14:35:57,473 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 14:35:57,473 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 14:35:57,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 14:35:57,473 INFO L82 PathProgramCache]: Analyzing trace with hash -124250076, now seen corresponding path program 1 times [2020-04-17 14:35:57,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 14:35:57,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778429496] [2020-04-17 14:35:57,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 14:35:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 14:35:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 14:35:57,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778429496] [2020-04-17 14:35:57,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 14:35:57,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 14:35:57,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117851660] [2020-04-17 14:35:57,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 14:35:57,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 14:35:57,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 14:35:57,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 14:35:57,503 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand 3 states. [2020-04-17 14:35:57,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 14:35:57,514 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2020-04-17 14:35:57,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 14:35:57,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 14:35:57,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 14:35:57,515 INFO L225 Difference]: With dead ends: 9 [2020-04-17 14:35:57,515 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 14:35:57,515 INFO L678 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 [2020-04-17 14:35:57,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 14:35:57,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 14:35:57,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 14:35:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 14:35:57,516 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-04-17 14:35:57,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 14:35:57,516 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 14:35:57,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 14:35:57,517 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 14:35:57,517 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 14:35:57,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 02:35:57 BasicIcfg [2020-04-17 14:35:57,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 14:35:57,523 INFO L168 Benchmark]: Toolchain (without parser) took 5918.77 ms. Allocated memory was 145.2 MB in the beginning and 281.5 MB in the end (delta: 136.3 MB). Free memory was 101.5 MB in the beginning and 125.4 MB in the end (delta: -23.9 MB). Peak memory consumption was 112.4 MB. Max. memory is 7.1 GB. [2020-04-17 14:35:57,524 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 14:35:57,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 728.93 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 99.6 MB in the beginning and 159.9 MB in the end (delta: -60.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-04-17 14:35:57,526 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.38 ms. Allocated memory is still 203.4 MB. Free memory was 159.9 MB in the beginning and 157.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 14:35:57,526 INFO L168 Benchmark]: Boogie Preprocessor took 30.86 ms. Allocated memory is still 203.4 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 14:35:57,527 INFO L168 Benchmark]: RCFGBuilder took 1136.35 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 155.9 MB in the beginning and 184.9 MB in the end (delta: -29.0 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. [2020-04-17 14:35:57,528 INFO L168 Benchmark]: TraceAbstraction took 3928.99 ms. Allocated memory was 235.9 MB in the beginning and 281.5 MB in the end (delta: 45.6 MB). Free memory was 183.5 MB in the beginning and 125.4 MB in the end (delta: 58.1 MB). Peak memory consumption was 103.7 MB. Max. memory is 7.1 GB. [2020-04-17 14:35:57,533 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 728.93 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 99.6 MB in the beginning and 159.9 MB in the end (delta: -60.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 66.38 ms. Allocated memory is still 203.4 MB. Free memory was 159.9 MB in the beginning and 157.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.86 ms. Allocated memory is still 203.4 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1136.35 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 155.9 MB in the beginning and 184.9 MB in the end (delta: -29.0 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3928.99 ms. Allocated memory was 235.9 MB in the beginning and 281.5 MB in the end (delta: 45.6 MB). Free memory was 183.5 MB in the beginning and 125.4 MB in the end (delta: 58.1 MB). Peak memory consumption was 103.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.9s, 54 ProgramPointsBefore, 21 ProgramPointsAfterwards, 54 TransitionsBefore, 20 TransitionsAfterwards, 704 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 1 ChoiceCompositions, 400 VarBasedMoverChecksPositive, 66 VarBasedMoverChecksNegative, 45 SemBasedMoverChecksPositive, 50 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.8s, 0 MoverChecksTotal, 1545 CheckedPairsTotal, 47 TotalNumberOfCompositions - PositiveResult [Line: 702]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 711]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 51 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 77 SDtfs, 36 SDslu, 29 SDs, 0 SdLazy, 20 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 397 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...