/usr/bin/java -Xmx16000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 19:03:39,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 19:03:39,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 19:03:39,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 19:03:39,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 19:03:39,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 19:03:39,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 19:03:39,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 19:03:39,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 19:03:39,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 19:03:39,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 19:03:39,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 19:03:39,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 19:03:39,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 19:03:39,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 19:03:39,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 19:03:39,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 19:03:39,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 19:03:39,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 19:03:39,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 19:03:39,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 19:03:39,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 19:03:39,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 19:03:39,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 19:03:39,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 19:03:39,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 19:03:39,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 19:03:39,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 19:03:39,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 19:03:39,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 19:03:39,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 19:03:39,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 19:03:39,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 19:03:39,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 19:03:39,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 19:03:39,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 19:03:39,241 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-SemanticLbe.epf [2021-03-11 19:03:39,268 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 19:03:39,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 19:03:39,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 19:03:39,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 19:03:39,271 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 19:03:39,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 19:03:39,271 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 19:03:39,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 19:03:39,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 19:03:39,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 19:03:39,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 19:03:39,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 19:03:39,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 19:03:39,272 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 19:03:39,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 19:03:39,273 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 19:03:39,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 19:03:39,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 19:03:39,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 19:03:39,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 19:03:39,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 19:03:39,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 19:03:39,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 19:03:39,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 19:03:39,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 19:03:39,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 19:03:39,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 19:03:39,274 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 19:03:39,274 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 19:03:39,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 19:03:39,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 19:03:39,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 19:03:39,513 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 19:03:39,513 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 19:03:39,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2021-03-11 19:03:39,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a95a658/986d1a6d6cc74e638e569f7256a68b4b/FLAG472091f34 [2021-03-11 19:03:39,952 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 19:03:39,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2021-03-11 19:03:39,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a95a658/986d1a6d6cc74e638e569f7256a68b4b/FLAG472091f34 [2021-03-11 19:03:40,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a95a658/986d1a6d6cc74e638e569f7256a68b4b [2021-03-11 19:03:40,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 19:03:40,316 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 19:03:40,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 19:03:40,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 19:03:40,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 19:03:40,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 07:03:40" (1/1) ... [2021-03-11 19:03:40,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ed9238a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:03:40, skipping insertion in model container [2021-03-11 19:03:40,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 07:03:40" (1/1) ... [2021-03-11 19:03:40,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 19:03:40,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 19:03:40,439 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-11 19:03:40,554 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-03-11 19:03:40,560 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-03-11 19:03:40,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 19:03:40,573 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 19:03:40,581 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-11 19:03:40,593 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[31403,31416] [2021-03-11 19:03:40,595 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i[32483,32496] [2021-03-11 19:03:40,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 19:03:40,636 INFO L208 MainTranslator]: Completed translation [2021-03-11 19:03:40,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:03:40 WrapperNode [2021-03-11 19:03:40,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 19:03:40,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 19:03:40,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 19:03:40,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 19:03:40,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:03:40" (1/1) ... [2021-03-11 19:03:40,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:03:40" (1/1) ... [2021-03-11 19:03:40,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 19:03:40,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 19:03:40,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 19:03:40,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 19:03:40,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:03:40" (1/1) ... [2021-03-11 19:03:40,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:03:40" (1/1) ... [2021-03-11 19:03:40,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:03:40" (1/1) ... [2021-03-11 19:03:40,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:03:40" (1/1) ... [2021-03-11 19:03:40,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:03:40" (1/1) ... [2021-03-11 19:03:40,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:03:40" (1/1) ... [2021-03-11 19:03:40,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:03:40" (1/1) ... [2021-03-11 19:03:40,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 19:03:40,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 19:03:40,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 19:03:40,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 19:03:40,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:03:40" (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 [2021-03-11 19:03:40,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-11 19:03:40,722 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-03-11 19:03:40,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-03-11 19:03:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-11 19:03:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-11 19:03:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 19:03:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 19:03:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 19:03:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 19:03:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 19:03:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 19:03:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 19:03:40,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 19:03:40,726 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 19:03:41,071 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 19:03:41,071 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-11 19:03:41,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 07:03:41 BoogieIcfgContainer [2021-03-11 19:03:41,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 19:03:41,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 19:03:41,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 19:03:41,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 19:03:41,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 07:03:40" (1/3) ... [2021-03-11 19:03:41,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24dcab62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 07:03:41, skipping insertion in model container [2021-03-11 19:03:41,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:03:40" (2/3) ... [2021-03-11 19:03:41,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24dcab62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 07:03:41, skipping insertion in model container [2021-03-11 19:03:41,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 07:03:41" (3/3) ... [2021-03-11 19:03:41,079 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2021-03-11 19:03:41,082 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 19:03:41,085 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-11 19:03:41,086 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 19:03:41,116 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,117 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,117 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,117 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,117 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,117 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,117 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,117 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,118 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,118 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,118 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,118 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,118 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,118 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,118 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,119 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,119 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,119 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,119 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,119 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,120 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,120 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,120 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,120 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,120 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,121 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,121 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,121 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,121 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,121 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,122 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,123 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,124 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,124 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,125 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,125 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,125 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,125 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,125 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,125 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,125 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,125 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,125 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,125 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,126 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,126 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,126 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,126 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,128 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,128 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,128 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,128 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,128 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,128 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,129 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,129 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,129 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,129 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,130 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,130 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,130 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,130 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,130 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,130 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,130 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,131 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,131 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,131 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,132 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,133 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,133 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,133 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,133 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,133 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,136 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,136 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,136 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,137 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,137 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,137 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:03:41,148 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-11 19:03:41,160 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-11 19:03:41,174 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 19:03:41,174 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 19:03:41,174 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 19:03:41,174 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 19:03:41,174 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 19:03:41,174 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 19:03:41,174 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 19:03:41,174 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 19:03:41,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 96 transitions, 214 flow [2021-03-11 19:03:41,212 INFO L129 PetriNetUnfolder]: 14/96 cut-off events. [2021-03-11 19:03:41,212 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 19:03:41,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 96 events. 14/96 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 160 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-03-11 19:03:41,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 96 transitions, 214 flow [2021-03-11 19:03:41,223 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 84 transitions, 180 flow [2021-03-11 19:03:41,226 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 19:03:41,232 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 84 transitions, 180 flow [2021-03-11 19:03:41,234 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 84 transitions, 180 flow [2021-03-11 19:03:41,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 84 transitions, 180 flow [2021-03-11 19:03:41,246 INFO L129 PetriNetUnfolder]: 13/86 cut-off events. [2021-03-11 19:03:41,246 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-11 19:03:41,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 86 events. 13/86 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 154 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-03-11 19:03:41,248 INFO L116 LiptonReduction]: Number of co-enabled transitions 2028 [2021-03-11 19:03:42,950 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2021-03-11 19:03:43,194 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2021-03-11 19:03:43,299 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-03-11 19:03:43,325 INFO L131 LiptonReduction]: Checked pairs total: 5577 [2021-03-11 19:03:43,325 INFO L133 LiptonReduction]: Total number of compositions: 63 [2021-03-11 19:03:43,326 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2102 [2021-03-11 19:03:43,332 INFO L129 PetriNetUnfolder]: 2/17 cut-off events. [2021-03-11 19:03:43,332 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-11 19:03:43,332 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 19:03:43,333 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-11 19:03:43,333 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 19:03:43,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 19:03:43,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1264024377, now seen corresponding path program 1 times [2021-03-11 19:03:43,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 19:03:43,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913443553] [2021-03-11 19:03:43,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 19:03:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 19:03:43,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:03:43,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:03:43,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:03:43,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 19:03:43,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 19:03:43,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913443553] [2021-03-11 19:03:43,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 19:03:43,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 19:03:43,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50688786] [2021-03-11 19:03:43,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 19:03:43,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 19:03:43,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 19:03:43,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 19:03:43,456 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 159 [2021-03-11 19:03:43,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 38 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2021-03-11 19:03:43,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 19:03:43,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 159 [2021-03-11 19:03:43,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 19:03:43,484 INFO L129 PetriNetUnfolder]: 9/81 cut-off events. [2021-03-11 19:03:43,484 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-11 19:03:43,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 81 events. 9/81 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 335 event pairs, 1 based on Foata normal form. 4/72 useless extension candidates. Maximal degree in co-relation 95. Up to 14 conditions per place. [2021-03-11 19:03:43,485 INFO L132 encePairwiseOnDemand]: 152/159 looper letters, 5 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2021-03-11 19:03:43,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 112 flow [2021-03-11 19:03:43,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 19:03:43,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 19:03:43,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 370 transitions. [2021-03-11 19:03:43,493 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7756813417190775 [2021-03-11 19:03:43,494 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 370 transitions. [2021-03-11 19:03:43,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 370 transitions. [2021-03-11 19:03:43,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 19:03:43,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 370 transitions. [2021-03-11 19:03:43,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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) [2021-03-11 19:03:43,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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) [2021-03-11 19:03:43,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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) [2021-03-11 19:03:43,504 INFO L185 Difference]: Start difference. First operand has 37 places, 38 transitions, 88 flow. Second operand 3 states and 370 transitions. [2021-03-11 19:03:43,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 112 flow [2021-03-11 19:03:43,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 104 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 19:03:43,507 INFO L241 Difference]: Finished difference. Result has 37 places, 39 transitions, 108 flow [2021-03-11 19:03:43,508 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=37, PETRI_TRANSITIONS=39} [2021-03-11 19:03:43,509 INFO L335 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2021-03-11 19:03:43,509 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 39 transitions, 108 flow [2021-03-11 19:03:43,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2021-03-11 19:03:43,509 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 19:03:43,510 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 19:03:43,510 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 19:03:43,510 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 19:03:43,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 19:03:43,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1087870772, now seen corresponding path program 1 times [2021-03-11 19:03:43,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 19:03:43,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149053749] [2021-03-11 19:03:43,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 19:03:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 19:03:43,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:03:43,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:03:43,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:03:43,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 19:03:43,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 19:03:43,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149053749] [2021-03-11 19:03:43,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 19:03:43,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 19:03:43,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356865225] [2021-03-11 19:03:43,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 19:03:43,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 19:03:43,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 19:03:43,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 19:03:43,567 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 159 [2021-03-11 19:03:43,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 39 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2021-03-11 19:03:43,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 19:03:43,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 159 [2021-03-11 19:03:43,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 19:03:43,588 INFO L129 PetriNetUnfolder]: 6/69 cut-off events. [2021-03-11 19:03:43,589 INFO L130 PetriNetUnfolder]: For 10/16 co-relation queries the response was YES. [2021-03-11 19:03:43,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 69 events. 6/69 cut-off events. For 10/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 279 event pairs, 0 based on Foata normal form. 4/61 useless extension candidates. Maximal degree in co-relation 86. Up to 10 conditions per place. [2021-03-11 19:03:43,589 INFO L132 encePairwiseOnDemand]: 154/159 looper letters, 5 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2021-03-11 19:03:43,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 39 transitions, 126 flow [2021-03-11 19:03:43,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 19:03:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 19:03:43,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2021-03-11 19:03:43,592 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7693920335429769 [2021-03-11 19:03:43,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2021-03-11 19:03:43,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2021-03-11 19:03:43,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 19:03:43,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2021-03-11 19:03:43,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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) [2021-03-11 19:03:43,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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) [2021-03-11 19:03:43,597 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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) [2021-03-11 19:03:43,597 INFO L185 Difference]: Start difference. First operand has 37 places, 39 transitions, 108 flow. Second operand 3 states and 367 transitions. [2021-03-11 19:03:43,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 39 transitions, 126 flow [2021-03-11 19:03:43,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 39 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 19:03:43,598 INFO L241 Difference]: Finished difference. Result has 38 places, 39 transitions, 112 flow [2021-03-11 19:03:43,599 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2021-03-11 19:03:43,599 INFO L335 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2021-03-11 19:03:43,599 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 112 flow [2021-03-11 19:03:43,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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) [2021-03-11 19:03:43,600 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 19:03:43,600 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 19:03:43,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 19:03:43,600 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 19:03:43,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 19:03:43,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1905078660, now seen corresponding path program 1 times [2021-03-11 19:03:43,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 19:03:43,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551884130] [2021-03-11 19:03:43,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 19:03:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 19:03:43,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:03:43,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:03:43,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:03:43,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 19:03:43,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:03:43,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 19:03:43,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:03:43,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:03:43,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 19:03:43,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551884130] [2021-03-11 19:03:43,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 19:03:43,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 19:03:43,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44794232] [2021-03-11 19:03:43,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 19:03:43,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 19:03:43,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 19:03:43,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 19:03:43,654 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 159 [2021-03-11 19:03:43,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 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) [2021-03-11 19:03:43,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 19:03:43,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 159 [2021-03-11 19:03:43,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 19:03:43,713 INFO L129 PetriNetUnfolder]: 60/210 cut-off events. [2021-03-11 19:03:43,713 INFO L130 PetriNetUnfolder]: For 72/74 co-relation queries the response was YES. [2021-03-11 19:03:43,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 210 events. 60/210 cut-off events. For 72/74 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1066 event pairs, 9 based on Foata normal form. 6/186 useless extension candidates. Maximal degree in co-relation 276. Up to 41 conditions per place. [2021-03-11 19:03:43,715 INFO L132 encePairwiseOnDemand]: 150/159 looper letters, 16 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2021-03-11 19:03:43,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 55 transitions, 211 flow [2021-03-11 19:03:43,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 19:03:43,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 19:03:43,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 607 transitions. [2021-03-11 19:03:43,720 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7635220125786164 [2021-03-11 19:03:43,720 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 607 transitions. [2021-03-11 19:03:43,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 607 transitions. [2021-03-11 19:03:43,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 19:03:43,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 607 transitions. [2021-03-11 19:03:43,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.4) internal successors, (607), 5 states have internal predecessors, (607), 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) [2021-03-11 19:03:43,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 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) [2021-03-11 19:03:43,724 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 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) [2021-03-11 19:03:43,724 INFO L185 Difference]: Start difference. First operand has 38 places, 39 transitions, 112 flow. Second operand 5 states and 607 transitions. [2021-03-11 19:03:43,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 55 transitions, 211 flow [2021-03-11 19:03:43,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 19:03:43,726 INFO L241 Difference]: Finished difference. Result has 44 places, 47 transitions, 184 flow [2021-03-11 19:03:43,726 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2021-03-11 19:03:43,726 INFO L335 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2021-03-11 19:03:43,726 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 184 flow [2021-03-11 19:03:43,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 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) [2021-03-11 19:03:43,727 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 19:03:43,727 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 19:03:43,727 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 19:03:43,727 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 19:03:43,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 19:03:43,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1094497290, now seen corresponding path program 2 times [2021-03-11 19:03:43,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 19:03:43,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506901495] [2021-03-11 19:03:43,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 19:03:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 19:03:43,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:03:43,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:03:43,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:03:43,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 19:03:43,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:03:43,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 19:03:43,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:03:43,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:03:43,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 19:03:43,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506901495] [2021-03-11 19:03:43,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 19:03:43,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 19:03:43,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067944273] [2021-03-11 19:03:43,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 19:03:43,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 19:03:43,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 19:03:43,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 19:03:43,756 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 159 [2021-03-11 19:03:43,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 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) [2021-03-11 19:03:43,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 19:03:43,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 159 [2021-03-11 19:03:43,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 19:03:43,794 INFO L129 PetriNetUnfolder]: 115/283 cut-off events. [2021-03-11 19:03:43,795 INFO L130 PetriNetUnfolder]: For 84/90 co-relation queries the response was YES. [2021-03-11 19:03:43,796 INFO L84 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 283 events. 115/283 cut-off events. For 84/90 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1387 event pairs, 9 based on Foata normal form. 9/263 useless extension candidates. Maximal degree in co-relation 539. Up to 49 conditions per place. [2021-03-11 19:03:43,796 INFO L132 encePairwiseOnDemand]: 151/159 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2021-03-11 19:03:43,796 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 60 transitions, 268 flow [2021-03-11 19:03:43,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 19:03:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 19:03:43,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 611 transitions. [2021-03-11 19:03:43,798 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7685534591194969 [2021-03-11 19:03:43,798 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 611 transitions. [2021-03-11 19:03:43,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 611 transitions. [2021-03-11 19:03:43,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 19:03:43,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 611 transitions. [2021-03-11 19:03:43,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 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) [2021-03-11 19:03:43,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 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) [2021-03-11 19:03:43,801 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 159.0) internal successors, (954), 6 states have internal predecessors, (954), 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) [2021-03-11 19:03:43,801 INFO L185 Difference]: Start difference. First operand has 44 places, 47 transitions, 184 flow. Second operand 5 states and 611 transitions. [2021-03-11 19:03:43,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 60 transitions, 268 flow [2021-03-11 19:03:43,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 60 transitions, 259 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 19:03:43,804 INFO L241 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2021-03-11 19:03:43,804 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2021-03-11 19:03:43,805 INFO L335 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2021-03-11 19:03:43,805 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2021-03-11 19:03:43,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 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) [2021-03-11 19:03:43,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 19:03:43,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 07:03:43 BasicIcfg [2021-03-11 19:03:43,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 19:03:43,809 INFO L168 Benchmark]: Toolchain (without parser) took 3495.38 ms. Allocated memory was 255.9 MB in the beginning and 415.2 MB in the end (delta: 159.4 MB). Free memory was 237.0 MB in the beginning and 249.1 MB in the end (delta: -12.1 MB). Peak memory consumption was 146.7 MB. Max. memory is 16.0 GB. [2021-03-11 19:03:43,812 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.4 MB in the beginning and 237.4 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 19:03:43,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.75 ms. Allocated memory was 255.9 MB in the beginning and 346.0 MB in the end (delta: 90.2 MB). Free memory was 236.1 MB in the beginning and 310.0 MB in the end (delta: -73.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 19:03:43,813 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.19 ms. Allocated memory is still 346.0 MB. Free memory was 310.0 MB in the beginning and 307.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 19:03:43,813 INFO L168 Benchmark]: Boogie Preprocessor took 17.22 ms. Allocated memory is still 346.0 MB. Free memory was 307.9 MB in the beginning and 306.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 19:03:43,814 INFO L168 Benchmark]: RCFGBuilder took 394.36 ms. Allocated memory is still 346.0 MB. Free memory was 306.3 MB in the beginning and 282.7 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 19:03:43,816 INFO L168 Benchmark]: TraceAbstraction took 2733.26 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 282.7 MB in the beginning and 249.1 MB in the end (delta: 33.6 MB). Peak memory consumption was 105.9 MB. Max. memory is 16.0 GB. [2021-03-11 19:03:43,819 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.4 MB in the beginning and 237.4 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 320.75 ms. Allocated memory was 255.9 MB in the beginning and 346.0 MB in the end (delta: 90.2 MB). Free memory was 236.1 MB in the beginning and 310.0 MB in the end (delta: -73.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.19 ms. Allocated memory is still 346.0 MB. Free memory was 310.0 MB in the beginning and 307.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.22 ms. Allocated memory is still 346.0 MB. Free memory was 307.9 MB in the beginning and 306.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 394.36 ms. Allocated memory is still 346.0 MB. Free memory was 306.3 MB in the beginning and 282.7 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2733.26 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 282.7 MB in the beginning and 249.1 MB in the end (delta: 33.6 MB). Peak memory consumption was 105.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2091.2ms, 77 PlacesBefore, 37 PlacesAfterwards, 84 TransitionsBefore, 38 TransitionsAfterwards, 2028 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 13 ConcurrentYvCompositions, 6 ChoiceCompositions, 63 TotalNumberOfCompositions, 5577 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2694, positive: 2511, positive conditional: 0, positive unconditional: 2511, negative: 183, negative conditional: 0, negative unconditional: 183, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1299, positive: 1253, positive conditional: 0, positive unconditional: 1253, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1299, positive: 1229, positive conditional: 0, positive unconditional: 1229, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 70, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 122, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 84, negative conditional: 0, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2694, positive: 1258, positive conditional: 0, positive unconditional: 1258, negative: 137, negative conditional: 0, negative unconditional: 137, unknown: 1299, unknown conditional: 0, unknown unconditional: 1299] , Statistics on independence cache: Total cache size (in pairs): 250, Positive cache size: 222, Positive conditional cache size: 0, Positive unconditional cache size: 222, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28 - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 739]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 82 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2634.7ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 213.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2155.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 26 SDslu, 19 SDs, 0 SdLazy, 69 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 51.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=3, 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: 5.5ms SsaConstructionTime, 39.4ms SatisfiabilityAnalysisTime, 124.4ms InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 58 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...