/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 06:58:01,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 06:58:01,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 06:58:01,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 06:58:01,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 06:58:01,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 06:58:01,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 06:58:01,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 06:58:01,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 06:58:01,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 06:58:01,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 06:58:01,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 06:58:01,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 06:58:01,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 06:58:01,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 06:58:01,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 06:58:01,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 06:58:01,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 06:58:01,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 06:58:01,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 06:58:01,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 06:58:01,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 06:58:01,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 06:58:01,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 06:58:01,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 06:58:01,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 06:58:01,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 06:58:01,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 06:58:01,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 06:58:01,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 06:58:01,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 06:58:01,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 06:58:01,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 06:58:01,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 06:58:01,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 06:58:01,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 06:58:01,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-13 06:58:01,203 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 06:58:01,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 06:58:01,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 06:58:01,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 06:58:01,205 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 06:58:01,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 06:58:01,205 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 06:58:01,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 06:58:01,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 06:58:01,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 06:58:01,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 06:58:01,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 06:58:01,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 06:58:01,206 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 06:58:01,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 06:58:01,206 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 06:58:01,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 06:58:01,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 06:58:01,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 06:58:01,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 06:58:01,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 06:58:01,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 06:58:01,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 06:58:01,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 06:58:01,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 06:58:01,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 06:58:01,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 06:58:01,207 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 06:58:01,207 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 06:58:01,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 06:58:01,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 06:58:01,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 06:58:01,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 06:58:01,463 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 06:58:01,464 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 06:58:01,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2021-06-13 06:58:01,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef629ca4a/8abec664c96647998faf93a54a5ba68e/FLAGe684612c1 [2021-06-13 06:58:01,886 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 06:58:01,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2021-06-13 06:58:01,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef629ca4a/8abec664c96647998faf93a54a5ba68e/FLAGe684612c1 [2021-06-13 06:58:02,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef629ca4a/8abec664c96647998faf93a54a5ba68e [2021-06-13 06:58:02,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 06:58:02,259 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 06:58:02,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 06:58:02,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 06:58:02,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 06:58:02,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 06:58:02" (1/1) ... [2021-06-13 06:58:02,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@218dd986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:58:02, skipping insertion in model container [2021-06-13 06:58:02,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 06:58:02" (1/1) ... [2021-06-13 06:58:02,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 06:58:02,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 06:58:02,482 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30247,30260] [2021-06-13 06:58:02,493 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30452,30465] [2021-06-13 06:58:02,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 06:58:02,531 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 06:58:02,567 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30247,30260] [2021-06-13 06:58:02,568 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30452,30465] [2021-06-13 06:58:02,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 06:58:02,618 INFO L208 MainTranslator]: Completed translation [2021-06-13 06:58:02,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:58:02 WrapperNode [2021-06-13 06:58:02,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 06:58:02,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 06:58:02,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 06:58:02,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 06:58:02,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:58:02" (1/1) ... [2021-06-13 06:58:02,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:58:02" (1/1) ... [2021-06-13 06:58:02,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 06:58:02,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 06:58:02,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 06:58:02,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 06:58:02,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:58:02" (1/1) ... [2021-06-13 06:58:02,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:58:02" (1/1) ... [2021-06-13 06:58:02,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:58:02" (1/1) ... [2021-06-13 06:58:02,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:58:02" (1/1) ... [2021-06-13 06:58:02,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:58:02" (1/1) ... [2021-06-13 06:58:02,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:58:02" (1/1) ... [2021-06-13 06:58:02,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:58:02" (1/1) ... [2021-06-13 06:58:02,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 06:58:02,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 06:58:02,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 06:58:02,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 06:58:02,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:58:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 06:58:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2021-06-13 06:58:02,716 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2021-06-13 06:58:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-13 06:58:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2021-06-13 06:58:02,716 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2021-06-13 06:58:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 06:58:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-06-13 06:58:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 06:58:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 06:58:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 06:58:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 06:58:02,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 06:58:02,717 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 06:58:03,089 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 06:58:03,093 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-06-13 06:58:03,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 06:58:03 BoogieIcfgContainer [2021-06-13 06:58:03,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 06:58:03,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 06:58:03,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 06:58:03,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 06:58:03,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 06:58:02" (1/3) ... [2021-06-13 06:58:03,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75af51c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 06:58:03, skipping insertion in model container [2021-06-13 06:58:03,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:58:02" (2/3) ... [2021-06-13 06:58:03,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75af51c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 06:58:03, skipping insertion in model container [2021-06-13 06:58:03,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 06:58:03" (3/3) ... [2021-06-13 06:58:03,099 INFO L111 eAbstractionObserver]: Analyzing ICFG time_var_mutex.i [2021-06-13 06:58:03,104 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 06:58:03,104 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-13 06:58:03,105 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 06:58:03,132 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,133 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,133 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,133 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,133 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,133 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,133 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,133 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,133 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,133 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,134 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,134 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,134 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,134 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,134 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,134 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,135 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,135 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,135 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,135 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,135 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,135 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,135 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,135 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,136 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,136 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,136 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,136 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,136 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,137 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,138 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,139 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,139 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,139 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,140 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,140 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,141 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,141 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,143 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,143 WARN L313 ript$VariableManager]: TermVariabe |de_allocatorThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,143 WARN L313 ript$VariableManager]: TermVariabe de_allocatorThread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,147 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,147 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,147 WARN L313 ript$VariableManager]: TermVariabe allocatorThread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,148 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,148 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,148 WARN L313 ript$VariableManager]: TermVariabe |allocatorThread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:58:03,155 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-13 06:58:03,169 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 06:58:03,190 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 06:58:03,190 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 06:58:03,190 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 06:58:03,190 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 06:58:03,190 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 06:58:03,191 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 06:58:03,191 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 06:58:03,191 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == de_allocatorThread1of1ForFork0======== [2021-06-13 06:58:03,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 214 flow [2021-06-13 06:58:03,227 INFO L129 PetriNetUnfolder]: 6/96 cut-off events. [2021-06-13 06:58:03,228 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 06:58:03,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 96 events. 6/96 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 64. Up to 3 conditions per place. [2021-06-13 06:58:03,230 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 96 transitions, 214 flow [2021-06-13 06:58:03,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 84 transitions, 180 flow [2021-06-13 06:58:03,245 INFO L129 PetriNetUnfolder]: 5/78 cut-off events. [2021-06-13 06:58:03,245 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-13 06:58:03,245 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:58:03,246 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] [2021-06-13 06:58:03,246 INFO L430 AbstractCegarLoop]: === Iteration 1 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:58:03,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:58:03,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1390554518, now seen corresponding path program 1 times [2021-06-13 06:58:03,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:58:03,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647381699] [2021-06-13 06:58:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:58:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:58:03,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:03,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:58:03,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:03,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:58:03,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:03,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:58:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:58:03,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:58:03,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647381699] [2021-06-13 06:58:03,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647381699] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:58:03,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:58:03,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 06:58:03,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101698] [2021-06-13 06:58:03,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 06:58:03,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:58:03,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 06:58:03,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 06:58:03,430 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 96 [2021-06-13 06:58:03,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:58:03,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 96 [2021-06-13 06:58:03,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:58:03,468 INFO L129 PetriNetUnfolder]: 9/126 cut-off events. [2021-06-13 06:58:03,468 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-13 06:58:03,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 126 events. 9/126 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 286 event pairs, 2 based on Foata normal form. 9/124 useless extension candidates. Maximal degree in co-relation 113. Up to 14 conditions per place. [2021-06-13 06:58:03,472 INFO L132 encePairwiseOnDemand]: 87/96 looper letters, 5 selfloop transitions, 2 changer transitions 4/82 dead transitions. [2021-06-13 06:58:03,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 196 flow [2021-06-13 06:58:03,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 06:58:03,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 06:58:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2021-06-13 06:58:03,484 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9305555555555556 [2021-06-13 06:58:03,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2021-06-13 06:58:03,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2021-06-13 06:58:03,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:58:03,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2021-06-13 06:58:03,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,500 INFO L185 Difference]: Start difference. First operand has 85 places, 84 transitions, 180 flow. Second operand 3 states and 268 transitions. [2021-06-13 06:58:03,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 196 flow [2021-06-13 06:58:03,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 82 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-13 06:58:03,508 INFO L241 Difference]: Finished difference. Result has 83 places, 78 transitions, 176 flow [2021-06-13 06:58:03,510 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2021-06-13 06:58:03,510 INFO L335 CegarLoopForPetriNet]: 85 programPoint places, -2 predicate places. [2021-06-13 06:58:03,510 INFO L482 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 176 flow [2021-06-13 06:58:03,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,511 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:58:03,511 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, 1, 1, 1, 1] [2021-06-13 06:58:03,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 06:58:03,511 INFO L430 AbstractCegarLoop]: === Iteration 2 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:58:03,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:58:03,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1899106627, now seen corresponding path program 1 times [2021-06-13 06:58:03,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:58:03,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800373159] [2021-06-13 06:58:03,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:58:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:58:03,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:03,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:58:03,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:03,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:58:03,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:03,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:58:03,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:58:03,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:58:03,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800373159] [2021-06-13 06:58:03,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800373159] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:58:03,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:58:03,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 06:58:03,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957605591] [2021-06-13 06:58:03,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 06:58:03,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:58:03,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 06:58:03,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 06:58:03,597 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 96 [2021-06-13 06:58:03,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:58:03,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 96 [2021-06-13 06:58:03,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:58:03,630 INFO L129 PetriNetUnfolder]: 2/92 cut-off events. [2021-06-13 06:58:03,630 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-13 06:58:03,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 92 events. 2/92 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 107 event pairs, 1 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2021-06-13 06:58:03,631 INFO L132 encePairwiseOnDemand]: 93/96 looper letters, 2 selfloop transitions, 2 changer transitions 6/77 dead transitions. [2021-06-13 06:58:03,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 77 transitions, 182 flow [2021-06-13 06:58:03,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 06:58:03,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 06:58:03,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2021-06-13 06:58:03,633 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9131944444444444 [2021-06-13 06:58:03,633 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2021-06-13 06:58:03,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2021-06-13 06:58:03,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:58:03,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2021-06-13 06:58:03,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,635 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,635 INFO L185 Difference]: Start difference. First operand has 83 places, 78 transitions, 176 flow. Second operand 3 states and 263 transitions. [2021-06-13 06:58:03,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 77 transitions, 182 flow [2021-06-13 06:58:03,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 06:58:03,637 INFO L241 Difference]: Finished difference. Result has 82 places, 71 transitions, 159 flow [2021-06-13 06:58:03,637 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2021-06-13 06:58:03,637 INFO L335 CegarLoopForPetriNet]: 85 programPoint places, -3 predicate places. [2021-06-13 06:58:03,637 INFO L482 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 159 flow [2021-06-13 06:58:03,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,638 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:58:03,638 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:58:03,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 06:58:03,638 INFO L430 AbstractCegarLoop]: === Iteration 3 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:58:03,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:58:03,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1122358077, now seen corresponding path program 1 times [2021-06-13 06:58:03,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:58:03,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34879920] [2021-06-13 06:58:03,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:58:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:58:03,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:03,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:58:03,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:03,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:58:03,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:03,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:58:03,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:58:03,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:58:03,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34879920] [2021-06-13 06:58:03,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34879920] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:58:03,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:58:03,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 06:58:03,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231172339] [2021-06-13 06:58:03,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 06:58:03,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:58:03,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 06:58:03,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 06:58:03,695 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 96 [2021-06-13 06:58:03,696 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:58:03,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 96 [2021-06-13 06:58:03,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:58:03,724 INFO L129 PetriNetUnfolder]: 1/97 cut-off events. [2021-06-13 06:58:03,724 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 06:58:03,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 97 events. 1/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 131 event pairs, 1 based on Foata normal form. 1/97 useless extension candidates. Maximal degree in co-relation 58. Up to 10 conditions per place. [2021-06-13 06:58:03,725 INFO L132 encePairwiseOnDemand]: 94/96 looper letters, 3 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2021-06-13 06:58:03,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 167 flow [2021-06-13 06:58:03,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 06:58:03,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 06:58:03,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2021-06-13 06:58:03,726 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9131944444444444 [2021-06-13 06:58:03,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2021-06-13 06:58:03,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2021-06-13 06:58:03,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:58:03,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2021-06-13 06:58:03,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,730 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,730 INFO L185 Difference]: Start difference. First operand has 82 places, 71 transitions, 159 flow. Second operand 3 states and 263 transitions. [2021-06-13 06:58:03,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 71 transitions, 167 flow [2021-06-13 06:58:03,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 71 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 06:58:03,733 INFO L241 Difference]: Finished difference. Result has 79 places, 71 transitions, 160 flow [2021-06-13 06:58:03,735 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2021-06-13 06:58:03,736 INFO L335 CegarLoopForPetriNet]: 85 programPoint places, -6 predicate places. [2021-06-13 06:58:03,736 INFO L482 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 160 flow [2021-06-13 06:58:03,736 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,739 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:58:03,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:58:03,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 06:58:03,740 INFO L430 AbstractCegarLoop]: === Iteration 4 === [de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:58:03,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:58:03,741 INFO L82 PathProgramCache]: Analyzing trace with hash -646336171, now seen corresponding path program 2 times [2021-06-13 06:58:03,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:58:03,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866086689] [2021-06-13 06:58:03,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:58:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:58:03,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:03,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:58:03,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:03,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 06:58:03,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:03,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:58:03,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:03,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:58:03,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:03,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:58:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:58:03,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:58:03,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866086689] [2021-06-13 06:58:03,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866086689] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:58:03,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:58:03,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 06:58:03,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042283943] [2021-06-13 06:58:03,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 06:58:03,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:58:03,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 06:58:03,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 06:58:03,793 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 96 [2021-06-13 06:58:03,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:58:03,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 96 [2021-06-13 06:58:03,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:58:03,838 INFO L129 PetriNetUnfolder]: 5/92 cut-off events. [2021-06-13 06:58:03,838 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-13 06:58:03,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 92 events. 5/92 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 158 event pairs, 0 based on Foata normal form. 3/94 useless extension candidates. Maximal degree in co-relation 86. Up to 11 conditions per place. [2021-06-13 06:58:03,839 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 0 selfloop transitions, 0 changer transitions 75/75 dead transitions. [2021-06-13 06:58:03,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 75 transitions, 218 flow [2021-06-13 06:58:03,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 06:58:03,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 06:58:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 376 transitions. [2021-06-13 06:58:03,840 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7833333333333333 [2021-06-13 06:58:03,840 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 376 transitions. [2021-06-13 06:58:03,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 376 transitions. [2021-06-13 06:58:03,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:58:03,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 376 transitions. [2021-06-13 06:58:03,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,843 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,843 INFO L185 Difference]: Start difference. First operand has 79 places, 71 transitions, 160 flow. Second operand 5 states and 376 transitions. [2021-06-13 06:58:03,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 75 transitions, 218 flow [2021-06-13 06:58:03,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 75 transitions, 205 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-06-13 06:58:03,845 INFO L241 Difference]: Finished difference. Result has 78 places, 0 transitions, 0 flow [2021-06-13 06:58:03,845 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=78, PETRI_TRANSITIONS=0} [2021-06-13 06:58:03,845 INFO L335 CegarLoopForPetriNet]: 85 programPoint places, -7 predicate places. [2021-06-13 06:58:03,845 INFO L482 AbstractCegarLoop]: Abstraction has has 78 places, 0 transitions, 0 flow [2021-06-13 06:58:03,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 06:58:03,846 INFO L301 ceAbstractionStarter]: Result for error location de_allocatorThread1of1ForFork0 was SAFE (1/5) [2021-06-13 06:58:03,848 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 06:58:03,851 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 06:58:03,852 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 06:58:03,852 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 06:58:03,852 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 06:58:03,852 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 06:58:03,852 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 06:58:03,852 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 06:58:03,852 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == allocator======== [2021-06-13 06:58:03,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 214 flow [2021-06-13 06:58:03,863 INFO L129 PetriNetUnfolder]: 6/96 cut-off events. [2021-06-13 06:58:03,863 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 06:58:03,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 96 events. 6/96 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 64. Up to 3 conditions per place. [2021-06-13 06:58:03,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 96 transitions, 214 flow [2021-06-13 06:58:03,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-13 06:58:03,864 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-13 06:58:03,864 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 06:58:03,864 INFO L301 ceAbstractionStarter]: Result for error location allocator was SAFE (2/5) [2021-06-13 06:58:03,865 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 06:58:03,865 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 06:58:03,865 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 06:58:03,865 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 06:58:03,865 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 06:58:03,865 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 06:58:03,865 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 06:58:03,866 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 06:58:03,866 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == de_allocator======== [2021-06-13 06:58:03,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 214 flow [2021-06-13 06:58:03,874 INFO L129 PetriNetUnfolder]: 6/96 cut-off events. [2021-06-13 06:58:03,875 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 06:58:03,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 96 events. 6/96 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 64. Up to 3 conditions per place. [2021-06-13 06:58:03,876 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 96 transitions, 214 flow [2021-06-13 06:58:03,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-13 06:58:03,876 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-13 06:58:03,877 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 06:58:03,877 INFO L301 ceAbstractionStarter]: Result for error location de_allocator was SAFE (3/5) [2021-06-13 06:58:03,877 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-13 06:58:03,878 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 06:58:03,878 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 06:58:03,878 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 06:58:03,878 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 06:58:03,879 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 06:58:03,879 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 06:58:03,879 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 06:58:03,879 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 06:58:03,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 214 flow [2021-06-13 06:58:03,887 INFO L129 PetriNetUnfolder]: 6/96 cut-off events. [2021-06-13 06:58:03,887 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 06:58:03,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 96 events. 6/96 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 64. Up to 3 conditions per place. [2021-06-13 06:58:03,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 96 transitions, 214 flow [2021-06-13 06:58:03,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-13 06:58:03,888 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-13 06:58:03,888 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 06:58:03,888 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (4/5) [2021-06-13 06:58:03,888 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 06:58:03,890 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 06:58:03,890 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 06:58:03,890 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 06:58:03,890 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 06:58:03,890 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 06:58:03,890 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 06:58:03,892 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 06:58:03,892 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == allocatorThread1of1ForFork1======== [2021-06-13 06:58:03,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 214 flow [2021-06-13 06:58:03,899 INFO L129 PetriNetUnfolder]: 6/96 cut-off events. [2021-06-13 06:58:03,900 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 06:58:03,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 96 events. 6/96 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 64. Up to 3 conditions per place. [2021-06-13 06:58:03,900 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 96 transitions, 214 flow [2021-06-13 06:58:03,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 84 transitions, 180 flow [2021-06-13 06:58:03,905 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-06-13 06:58:03,905 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 06:58:03,906 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:58:03,906 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] [2021-06-13 06:58:03,906 INFO L430 AbstractCegarLoop]: === Iteration 1 === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:58:03,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:58:03,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1944255627, now seen corresponding path program 1 times [2021-06-13 06:58:03,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:58:03,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278080419] [2021-06-13 06:58:03,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:58:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:58:03,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:03,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:58:03,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:03,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:58:03,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:03,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:58:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:58:03,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:58:03,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278080419] [2021-06-13 06:58:03,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278080419] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:58:03,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:58:03,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 06:58:03,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144727900] [2021-06-13 06:58:03,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 06:58:03,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:58:03,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 06:58:03,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 06:58:03,970 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 96 [2021-06-13 06:58:03,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:58:03,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 96 [2021-06-13 06:58:03,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:58:03,983 INFO L129 PetriNetUnfolder]: 1/80 cut-off events. [2021-06-13 06:58:03,983 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-13 06:58:03,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 80 events. 1/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 4/80 useless extension candidates. Maximal degree in co-relation 45. Up to 3 conditions per place. [2021-06-13 06:58:03,983 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 2 selfloop transitions, 2 changer transitions 1/78 dead transitions. [2021-06-13 06:58:03,983 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 78 transitions, 176 flow [2021-06-13 06:58:03,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 06:58:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 06:58:03,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2021-06-13 06:58:03,984 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9270833333333334 [2021-06-13 06:58:03,984 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2021-06-13 06:58:03,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2021-06-13 06:58:03,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:58:03,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2021-06-13 06:58:03,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,986 INFO L185 Difference]: Start difference. First operand has 85 places, 84 transitions, 180 flow. Second operand 3 states and 267 transitions. [2021-06-13 06:58:03,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 78 transitions, 176 flow [2021-06-13 06:58:03,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 78 transitions, 168 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-13 06:58:03,989 INFO L241 Difference]: Finished difference. Result has 81 places, 77 transitions, 162 flow [2021-06-13 06:58:03,989 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=81, PETRI_TRANSITIONS=77} [2021-06-13 06:58:03,989 INFO L335 CegarLoopForPetriNet]: 85 programPoint places, -4 predicate places. [2021-06-13 06:58:03,989 INFO L482 AbstractCegarLoop]: Abstraction has has 81 places, 77 transitions, 162 flow [2021-06-13 06:58:03,990 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:03,990 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:58:03,990 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] [2021-06-13 06:58:03,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 06:58:03,990 INFO L430 AbstractCegarLoop]: === Iteration 2 === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:58:03,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:58:03,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1041569185, now seen corresponding path program 1 times [2021-06-13 06:58:03,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:58:03,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224646092] [2021-06-13 06:58:03,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:58:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:58:04,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:04,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:58:04,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:04,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:58:04,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:04,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:58:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:58:04,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:58:04,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224646092] [2021-06-13 06:58:04,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224646092] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:58:04,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:58:04,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 06:58:04,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554008719] [2021-06-13 06:58:04,024 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 06:58:04,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:58:04,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 06:58:04,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 06:58:04,026 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 96 [2021-06-13 06:58:04,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 77 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:04,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:58:04,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 96 [2021-06-13 06:58:04,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:58:04,045 INFO L129 PetriNetUnfolder]: 7/132 cut-off events. [2021-06-13 06:58:04,045 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 06:58:04,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 132 events. 7/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 335 event pairs, 2 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 113. Up to 16 conditions per place. [2021-06-13 06:58:04,045 INFO L132 encePairwiseOnDemand]: 91/96 looper letters, 4 selfloop transitions, 2 changer transitions 9/80 dead transitions. [2021-06-13 06:58:04,046 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 80 transitions, 188 flow [2021-06-13 06:58:04,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 06:58:04,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 06:58:04,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2021-06-13 06:58:04,046 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2021-06-13 06:58:04,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2021-06-13 06:58:04,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2021-06-13 06:58:04,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:58:04,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2021-06-13 06:58:04,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:04,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:04,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:04,049 INFO L185 Difference]: Start difference. First operand has 81 places, 77 transitions, 162 flow. Second operand 3 states and 264 transitions. [2021-06-13 06:58:04,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 80 transitions, 188 flow [2021-06-13 06:58:04,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 06:58:04,050 INFO L241 Difference]: Finished difference. Result has 81 places, 71 transitions, 155 flow [2021-06-13 06:58:04,050 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2021-06-13 06:58:04,050 INFO L335 CegarLoopForPetriNet]: 85 programPoint places, -4 predicate places. [2021-06-13 06:58:04,050 INFO L482 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 155 flow [2021-06-13 06:58:04,051 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:04,051 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:58:04,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:58:04,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 06:58:04,051 INFO L430 AbstractCegarLoop]: === Iteration 3 === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:58:04,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:58:04,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1271259847, now seen corresponding path program 1 times [2021-06-13 06:58:04,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:58:04,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281826745] [2021-06-13 06:58:04,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:58:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:58:04,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:04,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:58:04,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:04,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:58:04,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:04,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:58:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:58:04,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:58:04,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281826745] [2021-06-13 06:58:04,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281826745] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:58:04,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:58:04,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 06:58:04,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572451487] [2021-06-13 06:58:04,098 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 06:58:04,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:58:04,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 06:58:04,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 06:58:04,099 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 96 [2021-06-13 06:58:04,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:04,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:58:04,100 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 96 [2021-06-13 06:58:04,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:58:04,112 INFO L129 PetriNetUnfolder]: 1/83 cut-off events. [2021-06-13 06:58:04,112 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-13 06:58:04,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 83 events. 1/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 1 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 43. Up to 6 conditions per place. [2021-06-13 06:58:04,112 INFO L132 encePairwiseOnDemand]: 94/96 looper letters, 3 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2021-06-13 06:58:04,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 71 transitions, 163 flow [2021-06-13 06:58:04,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 06:58:04,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 06:58:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2021-06-13 06:58:04,114 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9131944444444444 [2021-06-13 06:58:04,114 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2021-06-13 06:58:04,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2021-06-13 06:58:04,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:58:04,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2021-06-13 06:58:04,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:04,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:04,115 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:04,115 INFO L185 Difference]: Start difference. First operand has 81 places, 71 transitions, 155 flow. Second operand 3 states and 263 transitions. [2021-06-13 06:58:04,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 71 transitions, 163 flow [2021-06-13 06:58:04,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 71 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 06:58:04,118 INFO L241 Difference]: Finished difference. Result has 79 places, 71 transitions, 158 flow [2021-06-13 06:58:04,118 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2021-06-13 06:58:04,118 INFO L335 CegarLoopForPetriNet]: 85 programPoint places, -6 predicate places. [2021-06-13 06:58:04,118 INFO L482 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 158 flow [2021-06-13 06:58:04,118 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:04,118 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:58:04,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:58:04,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 06:58:04,119 INFO L430 AbstractCegarLoop]: === Iteration 4 === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:58:04,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:58:04,119 INFO L82 PathProgramCache]: Analyzing trace with hash -934472199, now seen corresponding path program 2 times [2021-06-13 06:58:04,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:58:04,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616328103] [2021-06-13 06:58:04,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:58:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:58:04,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:04,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:58:04,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:04,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 06:58:04,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:04,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-13 06:58:04,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:04,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-13 06:58:04,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:04,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 06:58:04,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:04,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:58:04,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:04,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:58:04,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:58:04,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:58:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:58:04,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:58:04,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616328103] [2021-06-13 06:58:04,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616328103] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:58:04,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:58:04,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 06:58:04,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431223878] [2021-06-13 06:58:04,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 06:58:04,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:58:04,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 06:58:04,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-13 06:58:04,227 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 96 [2021-06-13 06:58:04,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 60.857142857142854) internal successors, (426), 7 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:04,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:58:04,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 96 [2021-06-13 06:58:04,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:58:04,324 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2021-06-13 06:58:04,324 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-13 06:58:04,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 67 events. 2/67 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 2/68 useless extension candidates. Maximal degree in co-relation 96. Up to 12 conditions per place. [2021-06-13 06:58:04,324 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2021-06-13 06:58:04,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 62 transitions, 191 flow [2021-06-13 06:58:04,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 06:58:04,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 06:58:04,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 429 transitions. [2021-06-13 06:58:04,325 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6383928571428571 [2021-06-13 06:58:04,326 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 429 transitions. [2021-06-13 06:58:04,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 429 transitions. [2021-06-13 06:58:04,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:58:04,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 429 transitions. [2021-06-13 06:58:04,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 61.285714285714285) internal successors, (429), 7 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:04,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:04,328 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:04,328 INFO L185 Difference]: Start difference. First operand has 79 places, 71 transitions, 158 flow. Second operand 7 states and 429 transitions. [2021-06-13 06:58:04,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 62 transitions, 191 flow [2021-06-13 06:58:04,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 62 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 06:58:04,329 INFO L241 Difference]: Finished difference. Result has 71 places, 0 transitions, 0 flow [2021-06-13 06:58:04,329 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=71, PETRI_TRANSITIONS=0} [2021-06-13 06:58:04,329 INFO L335 CegarLoopForPetriNet]: 85 programPoint places, -14 predicate places. [2021-06-13 06:58:04,329 INFO L482 AbstractCegarLoop]: Abstraction has has 71 places, 0 transitions, 0 flow [2021-06-13 06:58:04,329 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 60.857142857142854) internal successors, (426), 7 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:58:04,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 06:58:04,330 INFO L301 ceAbstractionStarter]: Result for error location allocatorThread1of1ForFork1 was SAFE (5/5) [2021-06-13 06:58:04,330 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 06:58:04,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 06:58:04 BasicIcfg [2021-06-13 06:58:04,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 06:58:04,333 INFO L168 Benchmark]: Toolchain (without parser) took 2074.21 ms. Allocated memory was 178.3 MB in the beginning and 213.9 MB in the end (delta: 35.7 MB). Free memory was 141.4 MB in the beginning and 147.4 MB in the end (delta: -6.1 MB). Peak memory consumption was 30.2 MB. Max. memory is 8.0 GB. [2021-06-13 06:58:04,333 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 178.3 MB. Free memory is still 159.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 06:58:04,334 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.29 ms. Allocated memory is still 178.3 MB. Free memory was 141.2 MB in the beginning and 142.2 MB in the end (delta: -974.3 kB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. [2021-06-13 06:58:04,334 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.19 ms. Allocated memory is still 178.3 MB. Free memory was 142.2 MB in the beginning and 140.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 06:58:04,334 INFO L168 Benchmark]: Boogie Preprocessor took 14.06 ms. Allocated memory is still 178.3 MB. Free memory was 140.0 MB in the beginning and 138.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 06:58:04,334 INFO L168 Benchmark]: RCFGBuilder took 424.35 ms. Allocated memory is still 178.3 MB. Free memory was 138.5 MB in the beginning and 113.3 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-06-13 06:58:04,335 INFO L168 Benchmark]: TraceAbstraction took 1237.37 ms. Allocated memory was 178.3 MB in the beginning and 213.9 MB in the end (delta: 35.7 MB). Free memory was 112.8 MB in the beginning and 147.4 MB in the end (delta: -34.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 8.0 GB. [2021-06-13 06:58:04,336 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 178.3 MB. Free memory is still 159.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 359.29 ms. Allocated memory is still 178.3 MB. Free memory was 141.2 MB in the beginning and 142.2 MB in the end (delta: -974.3 kB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 35.19 ms. Allocated memory is still 178.3 MB. Free memory was 142.2 MB in the beginning and 140.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.06 ms. Allocated memory is still 178.3 MB. Free memory was 140.0 MB in the beginning and 138.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 424.35 ms. Allocated memory is still 178.3 MB. Free memory was 138.5 MB in the beginning and 113.3 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1237.37 ms. Allocated memory was 178.3 MB in the beginning and 213.9 MB in the end (delta: 35.7 MB). Free memory was 112.8 MB in the beginning and 147.4 MB in the end (delta: -34.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 710]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 702]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: de_allocatorThread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 123 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 11.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 659.8ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 220.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 42.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 18 SDslu, 6 SDs, 0 SdLazy, 34 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 44.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=180occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.3ms SsaConstructionTime, 84.8ms SatisfiabilityAnalysisTime, 177.8ms InterpolantComputationTime, 221 NumberOfCodeBlocks, 221 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 217 ConstructedInterpolants, 0 QuantifiedInterpolants, 381 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: allocator with 1 thread instances CFG has 5 procedures, 123 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 15.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: de_allocator with 1 thread instances CFG has 5 procedures, 123 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 11.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 123 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 10.2ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: allocatorThread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 123 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 440.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 167.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 20 SDtfs, 20 SDslu, 16 SDs, 0 SdLazy, 94 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 60.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 69.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=180occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.5ms SsaConstructionTime, 49.2ms SatisfiabilityAnalysisTime, 162.0ms InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 205 ConstructedInterpolants, 0 QuantifiedInterpolants, 494 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...