/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/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 19:04:57,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 19:04:57,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 19:04:57,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 19:04:57,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 19:04:57,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 19:04:57,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 19:04:57,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 19:04:57,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 19:04:57,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 19:04:57,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 19:04:57,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 19:04:57,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 19:04:57,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 19:04:57,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 19:04:57,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 19:04:57,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 19:04:57,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 19:04:57,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 19:04:57,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 19:04:57,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 19:04:57,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 19:04:57,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 19:04:57,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 19:04:57,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 19:04:57,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 19:04:57,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 19:04:57,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 19:04:57,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 19:04:57,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 19:04:57,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 19:04:57,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 19:04:57,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 19:04:57,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 19:04:57,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 19:04:57,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 19:04:57,825 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 19:04:57,843 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 19:04:57,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 19:04:57,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 19:04:57,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 19:04:57,844 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 19:04:57,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 19:04:57,844 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 19:04:57,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 19:04:57,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 19:04:57,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 19:04:57,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 19:04:57,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 19:04:57,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 19:04:57,845 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 19:04:57,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 19:04:57,846 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 19:04:57,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 19:04:57,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 19:04:57,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 19:04:57,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 19:04:57,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 19:04:57,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 19:04:57,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 19:04:57,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 19:04:57,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 19:04:57,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 19:04:57,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 19:04:57,852 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 19:04:57,852 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 19:04:58,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 19:04:58,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 19:04:58,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 19:04:58,187 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 19:04:58,188 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 19:04:58,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2021-03-11 19:04:58,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f9620091/816b8c0d9643473aa450275adfc72e1e/FLAG8c2203aa6 [2021-03-11 19:04:58,811 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 19:04:58,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2021-03-11 19:04:58,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f9620091/816b8c0d9643473aa450275adfc72e1e/FLAG8c2203aa6 [2021-03-11 19:04:59,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f9620091/816b8c0d9643473aa450275adfc72e1e [2021-03-11 19:04:59,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 19:04:59,236 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 19:04:59,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 19:04:59,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 19:04:59,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 19:04:59,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 07:04:59" (1/1) ... [2021-03-11 19:04:59,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b2c0c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:04:59, skipping insertion in model container [2021-03-11 19:04:59,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 07:04:59" (1/1) ... [2021-03-11 19:04:59,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 19:04:59,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 19:04:59,403 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-11 19:04:59,526 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/peterson.i[30997,31010] [2021-03-11 19:04:59,531 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/peterson.i[31682,31695] [2021-03-11 19:04:59,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 19:04:59,539 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 19:04:59,551 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-11 19:04:59,568 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/peterson.i[30997,31010] [2021-03-11 19:04:59,570 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/peterson.i[31682,31695] [2021-03-11 19:04:59,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 19:04:59,632 INFO L208 MainTranslator]: Completed translation [2021-03-11 19:04:59,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:04:59 WrapperNode [2021-03-11 19:04:59,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 19:04:59,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 19:04:59,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 19:04:59,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 19:04:59,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:04:59" (1/1) ... [2021-03-11 19:04:59,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:04:59" (1/1) ... [2021-03-11 19:04:59,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 19:04:59,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 19:04:59,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 19:04:59,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 19:04:59,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:04:59" (1/1) ... [2021-03-11 19:04:59,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:04:59" (1/1) ... [2021-03-11 19:04:59,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:04:59" (1/1) ... [2021-03-11 19:04:59,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:04:59" (1/1) ... [2021-03-11 19:04:59,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:04:59" (1/1) ... [2021-03-11 19:04:59,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:04:59" (1/1) ... [2021-03-11 19:04:59,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:04:59" (1/1) ... [2021-03-11 19:04:59,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 19:04:59,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 19:04:59,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 19:04:59,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 19:04:59,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:04:59" (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 19:04:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-11 19:04:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-03-11 19:04:59,744 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-03-11 19:04:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-11 19:04:59,744 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-11 19:04:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 19:04:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 19:04:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 19:04:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 19:04:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 19:04:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 19:04:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 19:04:59,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 19:04:59,747 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 19:05:00,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 19:05:00,130 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-11 19:05:00,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 07:05:00 BoogieIcfgContainer [2021-03-11 19:05:00,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 19:05:00,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 19:05:00,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 19:05:00,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 19:05:00,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 07:04:59" (1/3) ... [2021-03-11 19:05:00,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e0815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 07:05:00, skipping insertion in model container [2021-03-11 19:05:00,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:04:59" (2/3) ... [2021-03-11 19:05:00,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e0815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 07:05:00, skipping insertion in model container [2021-03-11 19:05:00,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 07:05:00" (3/3) ... [2021-03-11 19:05:00,140 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2021-03-11 19:05:00,145 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 19:05:00,149 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-11 19:05:00,150 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 19:05:00,180 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,180 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,180 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,180 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,181 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,181 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,181 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,181 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,181 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,181 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,182 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,182 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,182 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,182 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,183 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,185 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,186 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,186 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,186 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,188 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,189 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,196 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,205 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,205 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,205 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,205 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,206 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,206 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:05:00,217 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-11 19:05:00,234 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-11 19:05:00,265 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 19:05:00,266 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 19:05:00,266 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 19:05:00,266 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 19:05:00,266 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 19:05:00,266 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 19:05:00,266 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 19:05:00,266 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 19:05:00,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 74 transitions, 170 flow [2021-03-11 19:05:00,317 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2021-03-11 19:05:00,318 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 19:05:00,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 74 events. 7/74 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2021-03-11 19:05:00,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 74 transitions, 170 flow [2021-03-11 19:05:00,350 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 62 transitions, 136 flow [2021-03-11 19:05:00,353 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 19:05:00,364 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 62 transitions, 136 flow [2021-03-11 19:05:00,367 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 62 transitions, 136 flow [2021-03-11 19:05:00,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 62 transitions, 136 flow [2021-03-11 19:05:00,391 INFO L129 PetriNetUnfolder]: 6/64 cut-off events. [2021-03-11 19:05:00,391 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-11 19:05:00,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 64 events. 6/64 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2021-03-11 19:05:00,395 INFO L116 LiptonReduction]: Number of co-enabled transitions 1116 [2021-03-11 19:05:02,074 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2021-03-11 19:05:02,323 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2021-03-11 19:05:02,414 INFO L131 LiptonReduction]: Checked pairs total: 3584 [2021-03-11 19:05:02,415 INFO L133 LiptonReduction]: Total number of compositions: 41 [2021-03-11 19:05:02,416 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2065 [2021-03-11 19:05:02,435 INFO L129 PetriNetUnfolder]: 2/19 cut-off events. [2021-03-11 19:05:02,438 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-11 19:05:02,438 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 19:05:02,438 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 19:05:02,439 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 19:05:02,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 19:05:02,450 INFO L82 PathProgramCache]: Analyzing trace with hash 71383460, now seen corresponding path program 1 times [2021-03-11 19:05:02,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 19:05:02,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993242348] [2021-03-11 19:05:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 19:05:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 19:05:02,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:05:02,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:05:02,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:05:02,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 19:05:02,661 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 19:05:02,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993242348] [2021-03-11 19:05:02,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 19:05:02,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 19:05:02,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875382460] [2021-03-11 19:05:02,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 19:05:02,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 19:05:02,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 19:05:02,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 19:05:02,684 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 115 [2021-03-11 19:05:02,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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 19:05:02,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 19:05:02,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 115 [2021-03-11 19:05:02,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 19:05:02,729 INFO L129 PetriNetUnfolder]: 5/68 cut-off events. [2021-03-11 19:05:02,729 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-11 19:05:02,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 68 events. 5/68 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 255 event pairs, 1 based on Foata normal form. 4/63 useless extension candidates. Maximal degree in co-relation 82. Up to 14 conditions per place. [2021-03-11 19:05:02,732 INFO L132 encePairwiseOnDemand]: 108/115 looper letters, 5 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2021-03-11 19:05:02,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 96 flow [2021-03-11 19:05:02,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 19:05:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 19:05:02,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2021-03-11 19:05:02,741 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7594202898550725 [2021-03-11 19:05:02,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2021-03-11 19:05:02,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2021-03-11 19:05:02,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 19:05:02,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2021-03-11 19:05:02,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2021-03-11 19:05:02,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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 19:05:02,752 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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 19:05:02,753 INFO L185 Difference]: Start difference. First operand has 33 places, 30 transitions, 72 flow. Second operand 3 states and 262 transitions. [2021-03-11 19:05:02,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 96 flow [2021-03-11 19:05:02,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 19:05:02,757 INFO L241 Difference]: Finished difference. Result has 33 places, 31 transitions, 92 flow [2021-03-11 19:05:02,758 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2021-03-11 19:05:02,759 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2021-03-11 19:05:02,759 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 92 flow [2021-03-11 19:05:02,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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 19:05:02,759 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 19:05:02,760 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 19:05:02,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 19:05:02,760 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 19:05:02,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 19:05:02,760 INFO L82 PathProgramCache]: Analyzing trace with hash 990888352, now seen corresponding path program 1 times [2021-03-11 19:05:02,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 19:05:02,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615771673] [2021-03-11 19:05:02,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 19:05:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 19:05:02,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:05:02,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:05:02,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:05:02,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 19:05:02,800 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 19:05:02,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615771673] [2021-03-11 19:05:02,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 19:05:02,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 19:05:02,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244530473] [2021-03-11 19:05:02,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 19:05:02,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 19:05:02,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 19:05:02,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 19:05:02,803 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 115 [2021-03-11 19:05:02,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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 19:05:02,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 19:05:02,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 115 [2021-03-11 19:05:02,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 19:05:02,830 INFO L129 PetriNetUnfolder]: 2/57 cut-off events. [2021-03-11 19:05:02,830 INFO L130 PetriNetUnfolder]: For 10/16 co-relation queries the response was YES. [2021-03-11 19:05:02,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 57 events. 2/57 cut-off events. For 10/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 200 event pairs, 0 based on Foata normal form. 4/53 useless extension candidates. Maximal degree in co-relation 74. Up to 10 conditions per place. [2021-03-11 19:05:02,831 INFO L132 encePairwiseOnDemand]: 110/115 looper letters, 5 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2021-03-11 19:05:02,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 110 flow [2021-03-11 19:05:02,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 19:05:02,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 19:05:02,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2021-03-11 19:05:02,837 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7507246376811594 [2021-03-11 19:05:02,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2021-03-11 19:05:02,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2021-03-11 19:05:02,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 19:05:02,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2021-03-11 19:05:02,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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 19:05:02,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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 19:05:02,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 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 19:05:02,840 INFO L185 Difference]: Start difference. First operand has 33 places, 31 transitions, 92 flow. Second operand 3 states and 259 transitions. [2021-03-11 19:05:02,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 110 flow [2021-03-11 19:05:02,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 100 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 19:05:02,841 INFO L241 Difference]: Finished difference. Result has 34 places, 31 transitions, 96 flow [2021-03-11 19:05:02,842 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2021-03-11 19:05:02,842 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2021-03-11 19:05:02,842 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 96 flow [2021-03-11 19:05:02,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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 19:05:02,843 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 19:05:02,843 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 19:05:02,843 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 19:05:02,843 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 19:05:02,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 19:05:02,843 INFO L82 PathProgramCache]: Analyzing trace with hash -33459333, now seen corresponding path program 1 times [2021-03-11 19:05:02,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 19:05:02,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908400490] [2021-03-11 19:05:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 19:05:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 19:05:02,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:05:02,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:05:02,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:05:02,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 19:05:02,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:05:02,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 19:05:02,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:05:02,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 19:05:02,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:05:02,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 19:05:02,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:05:02,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:05:02,937 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 19:05:02,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908400490] [2021-03-11 19:05:02,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 19:05:02,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 19:05:02,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870935575] [2021-03-11 19:05:02,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 19:05:02,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 19:05:02,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 19:05:02,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 19:05:02,940 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 115 [2021-03-11 19:05:02,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 79.5) internal successors, (477), 6 states have internal predecessors, (477), 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 19:05:02,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 19:05:02,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 115 [2021-03-11 19:05:02,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 19:05:03,050 INFO L129 PetriNetUnfolder]: 64/219 cut-off events. [2021-03-11 19:05:03,050 INFO L130 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2021-03-11 19:05:03,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 219 events. 64/219 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1083 event pairs, 5 based on Foata normal form. 9/212 useless extension candidates. Maximal degree in co-relation 339. Up to 59 conditions per place. [2021-03-11 19:05:03,052 INFO L132 encePairwiseOnDemand]: 105/115 looper letters, 23 selfloop transitions, 10 changer transitions 16/66 dead transitions. [2021-03-11 19:05:03,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 66 transitions, 275 flow [2021-03-11 19:05:03,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 19:05:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 19:05:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 837 transitions. [2021-03-11 19:05:03,055 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7278260869565217 [2021-03-11 19:05:03,055 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 837 transitions. [2021-03-11 19:05:03,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 837 transitions. [2021-03-11 19:05:03,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 19:05:03,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 837 transitions. [2021-03-11 19:05:03,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 83.7) internal successors, (837), 10 states have internal predecessors, (837), 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 19:05:03,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 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 19:05:03,062 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 115.0) internal successors, (1265), 11 states have internal predecessors, (1265), 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 19:05:03,063 INFO L185 Difference]: Start difference. First operand has 34 places, 31 transitions, 96 flow. Second operand 10 states and 837 transitions. [2021-03-11 19:05:03,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 66 transitions, 275 flow [2021-03-11 19:05:03,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 66 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 19:05:03,066 INFO L241 Difference]: Finished difference. Result has 50 places, 40 transitions, 186 flow [2021-03-11 19:05:03,066 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=186, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2021-03-11 19:05:03,067 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2021-03-11 19:05:03,067 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 186 flow [2021-03-11 19:05:03,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 79.5) internal successors, (477), 6 states have internal predecessors, (477), 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 19:05:03,067 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 19:05:03,067 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 19:05:03,067 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 19:05:03,068 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 19:05:03,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 19:05:03,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1549376085, now seen corresponding path program 2 times [2021-03-11 19:05:03,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 19:05:03,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959188660] [2021-03-11 19:05:03,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 19:05:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 19:05:03,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:05:03,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:05:03,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:05:03,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 19:05:03,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:05:03,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 19:05:03,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:05:03,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 19:05:03,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:05:03,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 19:05:03,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:05:03,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:05:03,132 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 19:05:03,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959188660] [2021-03-11 19:05:03,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 19:05:03,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 19:05:03,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990152792] [2021-03-11 19:05:03,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 19:05:03,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 19:05:03,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 19:05:03,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 19:05:03,135 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 115 [2021-03-11 19:05:03,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 80.5) internal successors, (483), 6 states have internal predecessors, (483), 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 19:05:03,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 19:05:03,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 115 [2021-03-11 19:05:03,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 19:05:03,251 INFO L129 PetriNetUnfolder]: 73/208 cut-off events. [2021-03-11 19:05:03,251 INFO L130 PetriNetUnfolder]: For 208/236 co-relation queries the response was YES. [2021-03-11 19:05:03,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 208 events. 73/208 cut-off events. For 208/236 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 924 event pairs, 0 based on Foata normal form. 13/212 useless extension candidates. Maximal degree in co-relation 560. Up to 55 conditions per place. [2021-03-11 19:05:03,254 INFO L132 encePairwiseOnDemand]: 105/115 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2021-03-11 19:05:03,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 426 flow [2021-03-11 19:05:03,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 19:05:03,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 19:05:03,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 762 transitions. [2021-03-11 19:05:03,257 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.736231884057971 [2021-03-11 19:05:03,257 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 762 transitions. [2021-03-11 19:05:03,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 762 transitions. [2021-03-11 19:05:03,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 19:05:03,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 762 transitions. [2021-03-11 19:05:03,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 84.66666666666667) internal successors, (762), 9 states have internal predecessors, (762), 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 19:05:03,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 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 19:05:03,263 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 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 19:05:03,263 INFO L185 Difference]: Start difference. First operand has 50 places, 40 transitions, 186 flow. Second operand 9 states and 762 transitions. [2021-03-11 19:05:03,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 426 flow [2021-03-11 19:05:03,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 72 transitions, 385 flow, removed 15 selfloop flow, removed 6 redundant places. [2021-03-11 19:05:03,269 INFO L241 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2021-03-11 19:05:03,269 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2021-03-11 19:05:03,269 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2021-03-11 19:05:03,269 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2021-03-11 19:05:03,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 80.5) internal successors, (483), 6 states have internal predecessors, (483), 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 19:05:03,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 19:05:03,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 07:05:03 BasicIcfg [2021-03-11 19:05:03,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 19:05:03,275 INFO L168 Benchmark]: Toolchain (without parser) took 4041.18 ms. Allocated memory was 255.9 MB in the beginning and 436.2 MB in the end (delta: 180.4 MB). Free memory was 234.4 MB in the beginning and 251.7 MB in the end (delta: -17.2 MB). Peak memory consumption was 162.9 MB. Max. memory is 16.0 GB. [2021-03-11 19:05:03,278 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 19:05:03,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.17 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 233.6 MB in the beginning and 326.0 MB in the end (delta: -92.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 19:05:03,279 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.60 ms. Allocated memory is still 362.8 MB. Free memory was 326.0 MB in the beginning and 324.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 19:05:03,279 INFO L168 Benchmark]: Boogie Preprocessor took 19.35 ms. Allocated memory is still 362.8 MB. Free memory was 324.4 MB in the beginning and 322.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 19:05:03,280 INFO L168 Benchmark]: RCFGBuilder took 446.84 ms. Allocated memory is still 362.8 MB. Free memory was 322.9 MB in the beginning and 301.8 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 19:05:03,282 INFO L168 Benchmark]: TraceAbstraction took 3138.78 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 301.3 MB in the beginning and 251.7 MB in the end (delta: 49.6 MB). Peak memory consumption was 124.6 MB. Max. memory is 16.0 GB. [2021-03-11 19:05:03,287 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 396.17 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 233.6 MB in the beginning and 326.0 MB in the end (delta: -92.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 30.60 ms. Allocated memory is still 362.8 MB. Free memory was 326.0 MB in the beginning and 324.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.35 ms. Allocated memory is still 362.8 MB. Free memory was 324.4 MB in the beginning and 322.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 446.84 ms. Allocated memory is still 362.8 MB. Free memory was 322.9 MB in the beginning and 301.8 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3138.78 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 301.3 MB in the beginning and 251.7 MB in the end (delta: 49.6 MB). Peak memory consumption was 124.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2048.1ms, 62 PlacesBefore, 33 PlacesAfterwards, 62 TransitionsBefore, 30 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 41 TotalNumberOfCompositions, 3584 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2182, positive: 2035, positive conditional: 0, positive unconditional: 2035, negative: 147, negative conditional: 0, negative unconditional: 147, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 806, positive: 768, positive conditional: 0, positive unconditional: 768, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 806, positive: 760, positive conditional: 0, positive unconditional: 760, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 46, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 116, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 100, negative conditional: 0, negative unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2182, positive: 1267, positive conditional: 0, positive unconditional: 1267, negative: 109, negative conditional: 0, negative unconditional: 109, unknown: 806, unknown conditional: 0, unknown unconditional: 806] , Statistics on independence cache: Total cache size (in pairs): 219, Positive cache size: 196, Positive conditional cache size: 0, Positive unconditional cache size: 196, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23 - PositiveResult [Line: 753]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 725]: 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, 67 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 9.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3008.5ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 385.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2161.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 68 SDtfs, 51 SDslu, 49 SDs, 0 SdLazy, 184 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 106.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 87.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=3, InterpolantAutomatonStates: 25, 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: 9.1ms SsaConstructionTime, 58.7ms SatisfiabilityAnalysisTime, 234.6ms InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 110 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...