/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 14:52:47,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 14:52:47,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 14:52:47,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 14:52:47,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 14:52:47,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 14:52:47,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 14:52:47,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 14:52:47,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 14:52:47,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 14:52:47,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 14:52:47,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 14:52:47,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 14:52:47,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 14:52:47,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 14:52:47,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 14:52:47,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 14:52:47,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 14:52:47,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 14:52:47,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 14:52:47,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 14:52:47,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 14:52:47,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 14:52:47,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 14:52:47,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 14:52:47,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 14:52:47,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 14:52:47,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 14:52:47,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 14:52:47,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 14:52:47,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 14:52:47,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 14:52:47,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 14:52:47,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 14:52:47,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 14:52:47,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 14:52:47,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 14:52:47,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 14:52:47,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 14:52:47,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 14:52:47,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 14:52:47,185 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 14:52:47,208 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 14:52:47,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 14:52:47,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 14:52:47,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 14:52:47,209 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 14:52:47,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 14:52:47,210 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 14:52:47,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 14:52:47,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 14:52:47,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 14:52:47,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 14:52:47,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 14:52:47,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 14:52:47,211 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 14:52:47,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 14:52:47,212 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 14:52:47,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 14:52:47,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 14:52:47,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 14:52:47,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 14:52:47,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 14:52:47,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 14:52:47,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 14:52:47,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 14:52:47,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 14:52:47,214 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 14:52:47,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 14:52:47,214 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 14:52:47,214 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 14:52:47,214 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 14:52:47,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 14:52:47,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 14:52:47,530 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 14:52:47,531 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 14:52:47,532 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 14:52:47,532 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2020-10-09 14:52:47,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7af8cd26d/b23cf4891815484ea9cbf971718f0abe/FLAGc818965ce [2020-10-09 14:52:48,103 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 14:52:48,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2020-10-09 14:52:48,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7af8cd26d/b23cf4891815484ea9cbf971718f0abe/FLAGc818965ce [2020-10-09 14:52:48,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7af8cd26d/b23cf4891815484ea9cbf971718f0abe [2020-10-09 14:52:48,498 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 14:52:48,499 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 14:52:48,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 14:52:48,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 14:52:48,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 14:52:48,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 02:52:48" (1/1) ... [2020-10-09 14:52:48,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f4500e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:52:48, skipping insertion in model container [2020-10-09 14:52:48,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 02:52:48" (1/1) ... [2020-10-09 14:52:48,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 14:52:48,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 14:52:49,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 14:52:49,024 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 14:52:49,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 14:52:49,170 INFO L208 MainTranslator]: Completed translation [2020-10-09 14:52:49,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:52:49 WrapperNode [2020-10-09 14:52:49,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 14:52:49,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 14:52:49,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 14:52:49,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 14:52:49,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:52:49" (1/1) ... [2020-10-09 14:52:49,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:52:49" (1/1) ... [2020-10-09 14:52:49,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 14:52:49,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 14:52:49,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 14:52:49,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 14:52:49,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:52:49" (1/1) ... [2020-10-09 14:52:49,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:52:49" (1/1) ... [2020-10-09 14:52:49,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:52:49" (1/1) ... [2020-10-09 14:52:49,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:52:49" (1/1) ... [2020-10-09 14:52:49,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:52:49" (1/1) ... [2020-10-09 14:52:49,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:52:49" (1/1) ... [2020-10-09 14:52:49,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:52:49" (1/1) ... [2020-10-09 14:52:49,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 14:52:49,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 14:52:49,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 14:52:49,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 14:52:49,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:52:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 14:52:49,313 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2020-10-09 14:52:49,314 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2020-10-09 14:52:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-09 14:52:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2020-10-09 14:52:49,315 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2020-10-09 14:52:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 14:52:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-09 14:52:49,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 14:52:49,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 14:52:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-09 14:52:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 14:52:49,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 14:52:49,319 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 14:52:49,677 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 14:52:49,677 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-09 14:52:49,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 02:52:49 BoogieIcfgContainer [2020-10-09 14:52:49,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 14:52:49,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 14:52:49,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 14:52:49,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 14:52:49,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 02:52:48" (1/3) ... [2020-10-09 14:52:49,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efe0424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 02:52:49, skipping insertion in model container [2020-10-09 14:52:49,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:52:49" (2/3) ... [2020-10-09 14:52:49,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efe0424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 02:52:49, skipping insertion in model container [2020-10-09 14:52:49,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 02:52:49" (3/3) ... [2020-10-09 14:52:49,687 INFO L111 eAbstractionObserver]: Analyzing ICFG time_var_mutex.i [2020-10-09 14:52:49,698 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 14:52:49,705 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-09 14:52:49,706 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 14:52:49,742 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,742 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,743 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,743 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,743 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,744 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,744 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,745 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,745 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,745 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,746 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,746 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,747 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,747 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,747 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,748 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,748 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,748 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,752 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,752 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,752 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,753 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,753 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,753 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,763 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,763 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,763 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,764 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,764 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:52:49,797 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-09 14:52:49,817 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 14:52:49,817 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 14:52:49,817 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 14:52:49,818 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 14:52:49,818 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 14:52:49,818 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 14:52:49,818 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 14:52:49,818 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 14:52:49,832 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 84 transitions, 190 flow [2020-10-09 14:52:49,880 INFO L129 PetriNetUnfolder]: 6/84 cut-off events. [2020-10-09 14:52:49,881 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-09 14:52:49,886 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 84 events. 6/84 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 54. Up to 3 conditions per place. [2020-10-09 14:52:49,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 84 transitions, 190 flow [2020-10-09 14:52:49,893 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 72 transitions, 156 flow [2020-10-09 14:52:49,910 INFO L129 PetriNetUnfolder]: 2/51 cut-off events. [2020-10-09 14:52:49,910 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 14:52:49,911 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:52:49,912 INFO L255 CegarLoopForPetriNet]: 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] [2020-10-09 14:52:49,912 INFO L429 AbstractCegarLoop]: === Iteration 1 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:52:49,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:52:49,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1013860672, now seen corresponding path program 1 times [2020-10-09 14:52:49,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:52:49,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727525951] [2020-10-09 14:52:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 14:52:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:52:50,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-09 14:52:50,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:52:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:52:50,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:52:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:52:50,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727525951] [2020-10-09 14:52:50,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:52:50,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-09 14:52:50,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713814460] [2020-10-09 14:52:50,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 14:52:50,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:52:50,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 14:52:50,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 14:52:50,170 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 84 [2020-10-09 14:52:50,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 156 flow. Second operand 3 states. [2020-10-09 14:52:50,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:52:50,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 84 [2020-10-09 14:52:50,174 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:52:50,208 INFO L129 PetriNetUnfolder]: 1/70 cut-off events. [2020-10-09 14:52:50,208 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-09 14:52:50,209 INFO L80 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 70 events. 1/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 4/70 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2020-10-09 14:52:50,210 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 1 selfloop transitions, 2 changer transitions 1/68 dead transitions. [2020-10-09 14:52:50,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 68 transitions, 154 flow [2020-10-09 14:52:50,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 14:52:50,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-09 14:52:50,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2020-10-09 14:52:50,227 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9484126984126984 [2020-10-09 14:52:50,227 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2020-10-09 14:52:50,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2020-10-09 14:52:50,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:52:50,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2020-10-09 14:52:50,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-09 14:52:50,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-09 14:52:50,243 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-09 14:52:50,245 INFO L185 Difference]: Start difference. First operand has 73 places, 72 transitions, 156 flow. Second operand 3 states and 239 transitions. [2020-10-09 14:52:50,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 68 transitions, 154 flow [2020-10-09 14:52:50,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 146 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-09 14:52:50,256 INFO L241 Difference]: Finished difference. Result has 71 places, 67 transitions, 142 flow [2020-10-09 14:52:50,258 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2020-10-09 14:52:50,259 INFO L341 CegarLoopForPetriNet]: 73 programPoint places, -2 predicate places. [2020-10-09 14:52:50,260 INFO L481 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 142 flow [2020-10-09 14:52:50,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 14:52:50,260 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:52:50,260 INFO L255 CegarLoopForPetriNet]: 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] [2020-10-09 14:52:50,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 14:52:50,473 INFO L429 AbstractCegarLoop]: === Iteration 2 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:52:50,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:52:50,474 INFO L82 PathProgramCache]: Analyzing trace with hash 222356983, now seen corresponding path program 1 times [2020-10-09 14:52:50,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:52:50,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564205955] [2020-10-09 14:52:50,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 14:52:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:52:50,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-09 14:52:50,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:52:50,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:52:50,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:52:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:52:50,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564205955] [2020-10-09 14:52:50,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:52:50,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-09 14:52:50,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453110629] [2020-10-09 14:52:50,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 14:52:50,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:52:50,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 14:52:50,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 14:52:50,644 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 84 [2020-10-09 14:52:50,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 142 flow. Second operand 3 states. [2020-10-09 14:52:50,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:52:50,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 84 [2020-10-09 14:52:50,645 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:52:50,699 INFO L129 PetriNetUnfolder]: 4/100 cut-off events. [2020-10-09 14:52:50,699 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 14:52:50,700 INFO L80 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 100 events. 4/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 198 event pairs, 1 based on Foata normal form. 2/98 useless extension candidates. Maximal degree in co-relation 77. Up to 9 conditions per place. [2020-10-09 14:52:50,700 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 4 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2020-10-09 14:52:50,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 162 flow [2020-10-09 14:52:50,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 14:52:50,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-09 14:52:50,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2020-10-09 14:52:50,706 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9325396825396826 [2020-10-09 14:52:50,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2020-10-09 14:52:50,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2020-10-09 14:52:50,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:52:50,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2020-10-09 14:52:50,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-09 14:52:50,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-09 14:52:50,714 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-09 14:52:50,717 INFO L185 Difference]: Start difference. First operand has 71 places, 67 transitions, 142 flow. Second operand 3 states and 235 transitions. [2020-10-09 14:52:50,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 162 flow [2020-10-09 14:52:50,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-09 14:52:50,721 INFO L241 Difference]: Finished difference. Result has 72 places, 69 transitions, 166 flow [2020-10-09 14:52:50,722 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2020-10-09 14:52:50,722 INFO L341 CegarLoopForPetriNet]: 73 programPoint places, -1 predicate places. [2020-10-09 14:52:50,723 INFO L481 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 166 flow [2020-10-09 14:52:50,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 14:52:50,723 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:52:50,723 INFO L255 CegarLoopForPetriNet]: 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, 1] [2020-10-09 14:52:50,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 14:52:50,924 INFO L429 AbstractCegarLoop]: === Iteration 3 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:52:50,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:52:50,925 INFO L82 PathProgramCache]: Analyzing trace with hash 802211903, now seen corresponding path program 1 times [2020-10-09 14:52:50,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:52:50,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987769747] [2020-10-09 14:52:50,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 14:52:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:52:51,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-09 14:52:51,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:52:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:52:51,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:52:51,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:52:51,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987769747] [2020-10-09 14:52:51,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:52:51,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-09 14:52:51,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278458276] [2020-10-09 14:52:51,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 14:52:51,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:52:51,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 14:52:51,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 14:52:51,075 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 84 [2020-10-09 14:52:51,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 166 flow. Second operand 3 states. [2020-10-09 14:52:51,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:52:51,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 84 [2020-10-09 14:52:51,076 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:52:51,116 INFO L129 PetriNetUnfolder]: 3/99 cut-off events. [2020-10-09 14:52:51,117 INFO L130 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2020-10-09 14:52:51,117 INFO L80 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 99 events. 3/99 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 195 event pairs, 2 based on Foata normal form. 4/101 useless extension candidates. Maximal degree in co-relation 81. Up to 11 conditions per place. [2020-10-09 14:52:51,118 INFO L132 encePairwiseOnDemand]: 80/84 looper letters, 5 selfloop transitions, 2 changer transitions 1/68 dead transitions. [2020-10-09 14:52:51,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 174 flow [2020-10-09 14:52:51,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 14:52:51,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-09 14:52:51,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2020-10-09 14:52:51,123 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9285714285714286 [2020-10-09 14:52:51,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 234 transitions. [2020-10-09 14:52:51,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 234 transitions. [2020-10-09 14:52:51,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:52:51,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 234 transitions. [2020-10-09 14:52:51,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-09 14:52:51,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-09 14:52:51,129 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-09 14:52:51,129 INFO L185 Difference]: Start difference. First operand has 72 places, 69 transitions, 166 flow. Second operand 3 states and 234 transitions. [2020-10-09 14:52:51,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 174 flow [2020-10-09 14:52:51,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 68 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-09 14:52:51,133 INFO L241 Difference]: Finished difference. Result has 73 places, 67 transitions, 160 flow [2020-10-09 14:52:51,133 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2020-10-09 14:52:51,133 INFO L341 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2020-10-09 14:52:51,134 INFO L481 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 160 flow [2020-10-09 14:52:51,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 14:52:51,134 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:52:51,134 INFO L255 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:52:51,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 14:52:51,346 INFO L429 AbstractCegarLoop]: === Iteration 4 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:52:51,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:52:51,346 INFO L82 PathProgramCache]: Analyzing trace with hash 224993065, now seen corresponding path program 1 times [2020-10-09 14:52:51,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:52:51,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197487295] [2020-10-09 14:52:51,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 14:52:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:52:51,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-09 14:52:51,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:52:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:52:51,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:52:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:52:51,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197487295] [2020-10-09 14:52:51,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:52:51,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-09 14:52:51,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86631087] [2020-10-09 14:52:51,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-09 14:52:51,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:52:51,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-09 14:52:51,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-09 14:52:51,488 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 84 [2020-10-09 14:52:51,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 160 flow. Second operand 3 states. [2020-10-09 14:52:51,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:52:51,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 84 [2020-10-09 14:52:51,489 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:52:51,510 INFO L129 PetriNetUnfolder]: 1/114 cut-off events. [2020-10-09 14:52:51,511 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2020-10-09 14:52:51,511 INFO L80 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 114 events. 1/114 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 272 event pairs, 1 based on Foata normal form. 1/113 useless extension candidates. Maximal degree in co-relation 87. Up to 12 conditions per place. [2020-10-09 14:52:51,512 INFO L132 encePairwiseOnDemand]: 82/84 looper letters, 2 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2020-10-09 14:52:51,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 67 transitions, 166 flow [2020-10-09 14:52:51,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-09 14:52:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-09 14:52:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2020-10-09 14:52:51,513 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2020-10-09 14:52:51,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2020-10-09 14:52:51,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2020-10-09 14:52:51,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:52:51,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2020-10-09 14:52:51,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-09 14:52:51,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-09 14:52:51,516 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-09 14:52:51,516 INFO L185 Difference]: Start difference. First operand has 73 places, 67 transitions, 160 flow. Second operand 3 states and 238 transitions. [2020-10-09 14:52:51,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 67 transitions, 166 flow [2020-10-09 14:52:51,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 67 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-09 14:52:51,519 INFO L241 Difference]: Finished difference. Result has 75 places, 67 transitions, 163 flow [2020-10-09 14:52:51,520 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2020-10-09 14:52:51,520 INFO L341 CegarLoopForPetriNet]: 73 programPoint places, 2 predicate places. [2020-10-09 14:52:51,520 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 163 flow [2020-10-09 14:52:51,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-09 14:52:51,520 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:52:51,520 INFO L255 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:52:51,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 14:52:51,732 INFO L429 AbstractCegarLoop]: === Iteration 5 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:52:51,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:52:51,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1878729515, now seen corresponding path program 2 times [2020-10-09 14:52:51,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:52:51,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206667737] [2020-10-09 14:52:51,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-09 14:52:51,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-09 14:52:51,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:52:51,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 14:52:51,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:52:51,870 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-09 14:52:51,871 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 14:52:51,882 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 14:52:51,882 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-09 14:52:51,883 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-10-09 14:52:51,930 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 14:52:51,931 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 45 [2020-10-09 14:52:51,935 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:52:51,939 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 14:52:51,960 INFO L625 ElimStorePlain]: treesize reduction 16, result has 57.9 percent of original size [2020-10-09 14:52:51,963 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-09 14:52:51,963 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2020-10-09 14:52:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:52:52,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:52:52,071 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 14:52:52,072 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 14:52:52,072 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-09 14:52:52,073 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:47, output treesize:1 [2020-10-09 14:52:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:52:52,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206667737] [2020-10-09 14:52:52,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:52:52,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2020-10-09 14:52:52,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455490969] [2020-10-09 14:52:52,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 14:52:52,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:52:52,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 14:52:52,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-09 14:52:54,271 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 84 [2020-10-09 14:52:54,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 163 flow. Second operand 8 states. [2020-10-09 14:52:54,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:52:54,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 84 [2020-10-09 14:52:54,272 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:52:54,331 INFO L129 PetriNetUnfolder]: 2/100 cut-off events. [2020-10-09 14:52:54,331 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-09 14:52:54,332 INFO L80 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 100 events. 2/100 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 193 event pairs, 1 based on Foata normal form. 3/102 useless extension candidates. Maximal degree in co-relation 104. Up to 13 conditions per place. [2020-10-09 14:52:54,332 INFO L132 encePairwiseOnDemand]: 76/84 looper letters, 0 selfloop transitions, 0 changer transitions 65/65 dead transitions. [2020-10-09 14:52:54,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 65 transitions, 177 flow [2020-10-09 14:52:54,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 14:52:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-09 14:52:54,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 442 transitions. [2020-10-09 14:52:54,335 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.876984126984127 [2020-10-09 14:52:54,335 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 442 transitions. [2020-10-09 14:52:54,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 442 transitions. [2020-10-09 14:52:54,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:52:54,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 442 transitions. [2020-10-09 14:52:54,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-09 14:52:54,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-09 14:52:54,339 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-09 14:52:54,339 INFO L185 Difference]: Start difference. First operand has 75 places, 67 transitions, 163 flow. Second operand 6 states and 442 transitions. [2020-10-09 14:52:54,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 65 transitions, 177 flow [2020-10-09 14:52:54,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 65 transitions, 165 flow, removed 3 selfloop flow, removed 4 redundant places. [2020-10-09 14:52:54,343 INFO L241 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2020-10-09 14:52:54,343 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=72, PETRI_TRANSITIONS=0} [2020-10-09 14:52:54,343 INFO L341 CegarLoopForPetriNet]: 73 programPoint places, -1 predicate places. [2020-10-09 14:52:54,344 INFO L481 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2020-10-09 14:52:54,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 14:52:54,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 14:52:54,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 02:52:54 BasicIcfg [2020-10-09 14:52:54,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 14:52:54,566 INFO L168 Benchmark]: Toolchain (without parser) took 6066.89 ms. Allocated memory was 248.5 MB in the beginning and 368.6 MB in the end (delta: 120.1 MB). Free memory was 203.9 MB in the beginning and 272.5 MB in the end (delta: -68.6 MB). Peak memory consumption was 51.5 MB. Max. memory is 14.2 GB. [2020-10-09 14:52:54,567 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 248.5 MB. Free memory is still 224.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 14:52:54,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.22 ms. Allocated memory was 248.5 MB in the beginning and 306.2 MB in the end (delta: 57.7 MB). Free memory was 203.9 MB in the beginning and 259.5 MB in the end (delta: -55.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. [2020-10-09 14:52:54,568 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.46 ms. Allocated memory is still 306.2 MB. Free memory was 259.5 MB in the beginning and 256.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 14:52:54,569 INFO L168 Benchmark]: Boogie Preprocessor took 28.62 ms. Allocated memory is still 306.2 MB. Free memory was 256.9 MB in the beginning and 254.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 14:52:54,570 INFO L168 Benchmark]: RCFGBuilder took 430.83 ms. Allocated memory is still 306.2 MB. Free memory was 254.4 MB in the beginning and 230.1 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-09 14:52:54,571 INFO L168 Benchmark]: TraceAbstraction took 4883.94 ms. Allocated memory was 306.2 MB in the beginning and 368.6 MB in the end (delta: 62.4 MB). Free memory was 230.1 MB in the beginning and 272.5 MB in the end (delta: -42.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 14.2 GB. [2020-10-09 14:52:54,580 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 248.5 MB. Free memory is still 224.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 671.22 ms. Allocated memory was 248.5 MB in the beginning and 306.2 MB in the end (delta: 57.7 MB). Free memory was 203.9 MB in the beginning and 259.5 MB in the end (delta: -55.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.46 ms. Allocated memory is still 306.2 MB. Free memory was 259.5 MB in the beginning and 256.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.62 ms. Allocated memory is still 306.2 MB. Free memory was 256.9 MB in the beginning and 254.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 430.83 ms. Allocated memory is still 306.2 MB. Free memory was 254.4 MB in the beginning and 230.1 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4883.94 ms. Allocated memory was 306.2 MB in the beginning and 368.6 MB in the end (delta: 62.4 MB). Free memory was 230.1 MB in the beginning and 272.5 MB in the end (delta: -42.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 691]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 699]: 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 3 procedures, 78 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 88 SDslu, 0 SDs, 0 SdLazy, 150 SolverSat, 24 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 429 GetRequests, 417 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=2, 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, 0.4s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 428 ConstructedInterpolants, 8 QuantifiedInterpolants, 44855 SizeOfPredicates, 8 NumberOfNonLiveVariables, 579 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...