/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 13:01:59,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 13:01:59,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 13:01:59,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 13:01:59,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 13:01:59,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 13:01:59,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 13:01:59,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 13:01:59,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 13:01:59,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 13:01:59,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 13:01:59,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 13:01:59,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 13:01:59,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 13:01:59,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 13:01:59,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 13:01:59,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 13:01:59,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 13:01:59,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 13:01:59,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 13:01:59,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 13:01:59,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 13:01:59,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 13:01:59,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 13:01:59,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 13:01:59,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 13:01:59,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 13:01:59,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 13:01:59,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 13:01:59,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 13:01:59,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 13:01:59,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 13:01:59,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 13:01:59,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 13:01:59,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 13:01:59,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 13:01:59,663 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-RepeatedSemanticLbe.epf [2021-03-25 13:01:59,699 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 13:01:59,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 13:01:59,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 13:01:59,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 13:01:59,702 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 13:01:59,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 13:01:59,703 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 13:01:59,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 13:01:59,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 13:01:59,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 13:01:59,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 13:01:59,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 13:01:59,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 13:01:59,704 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 13:01:59,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 13:01:59,704 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 13:01:59,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 13:01:59,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 13:01:59,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 13:01:59,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 13:01:59,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 13:01:59,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 13:01:59,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 13:01:59,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 13:01:59,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 13:01:59,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 13:01:59,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 13:01:59,706 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 13:01:59,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 13:01:59,706 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 13:02:00,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 13:02:00,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 13:02:00,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 13:02:00,040 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 13:02:00,041 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 13:02:00,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2021-03-25 13:02:00,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/587c4044d/749497689e5e4290b789f9d5dc9d0e8b/FLAG39d94cff6 [2021-03-25 13:02:00,731 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 13:02:00,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2021-03-25 13:02:00,746 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/587c4044d/749497689e5e4290b789f9d5dc9d0e8b/FLAG39d94cff6 [2021-03-25 13:02:01,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/587c4044d/749497689e5e4290b789f9d5dc9d0e8b [2021-03-25 13:02:01,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 13:02:01,145 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 13:02:01,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 13:02:01,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 13:02:01,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 13:02:01,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 01:02:01" (1/1) ... [2021-03-25 13:02:01,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d01d7b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:02:01, skipping insertion in model container [2021-03-25 13:02:01,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 01:02:01" (1/1) ... [2021-03-25 13:02:01,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 13:02:01,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 13:02:01,423 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-25 13:02:01,618 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] [2021-03-25 13:02:01,626 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] [2021-03-25 13:02:01,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 13:02:01,639 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 13:02:01,656 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-25 13:02:01,671 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] [2021-03-25 13:02:01,673 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] [2021-03-25 13:02:01,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 13:02:01,738 INFO L208 MainTranslator]: Completed translation [2021-03-25 13:02:01,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:02:01 WrapperNode [2021-03-25 13:02:01,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 13:02:01,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 13:02:01,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 13:02:01,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 13:02:01,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:02:01" (1/1) ... [2021-03-25 13:02:01,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:02:01" (1/1) ... [2021-03-25 13:02:01,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 13:02:01,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 13:02:01,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 13:02:01,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 13:02:01,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:02:01" (1/1) ... [2021-03-25 13:02:01,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:02:01" (1/1) ... [2021-03-25 13:02:01,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:02:01" (1/1) ... [2021-03-25 13:02:01,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:02:01" (1/1) ... [2021-03-25 13:02:01,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:02:01" (1/1) ... [2021-03-25 13:02:01,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:02:01" (1/1) ... [2021-03-25 13:02:01,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:02:01" (1/1) ... [2021-03-25 13:02:01,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 13:02:01,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 13:02:01,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 13:02:01,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 13:02:01,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:02:01" (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 [2021-03-25 13:02:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-25 13:02:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-03-25 13:02:01,885 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-03-25 13:02:01,885 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-25 13:02:01,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-25 13:02:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 13:02:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 13:02:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 13:02:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 13:02:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 13:02:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 13:02:01,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 13:02:01,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 13:02:01,888 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 13:02:02,140 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 13:02:02,140 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-25 13:02:02,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 01:02:02 BoogieIcfgContainer [2021-03-25 13:02:02,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 13:02:02,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 13:02:02,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 13:02:02,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 13:02:02,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 01:02:01" (1/3) ... [2021-03-25 13:02:02,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2e976c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 01:02:02, skipping insertion in model container [2021-03-25 13:02:02,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:02:01" (2/3) ... [2021-03-25 13:02:02,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2e976c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 01:02:02, skipping insertion in model container [2021-03-25 13:02:02,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 01:02:02" (3/3) ... [2021-03-25 13:02:02,149 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2021-03-25 13:02:02,153 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 13:02:02,157 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-25 13:02:02,157 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 13:02:02,183 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,184 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,184 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,184 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,184 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,185 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,186 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,187 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,188 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,189 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,189 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,189 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,189 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,190 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,203 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,204 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,204 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,204 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,204 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,204 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:02:02,211 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-25 13:02:02,229 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-25 13:02:02,263 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 13:02:02,263 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 13:02:02,263 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 13:02:02,263 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 13:02:02,263 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 13:02:02,263 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 13:02:02,264 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 13:02:02,264 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 13:02:02,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 74 transitions, 170 flow [2021-03-25 13:02:02,333 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2021-03-25 13:02:02,333 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 13:02:02,344 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. [2021-03-25 13:02:02,345 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 74 transitions, 170 flow [2021-03-25 13:02:02,350 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 62 transitions, 136 flow [2021-03-25 13:02:02,351 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:02:02,362 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 62 transitions, 136 flow [2021-03-25 13:02:02,366 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 62 transitions, 136 flow [2021-03-25 13:02:02,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 62 transitions, 136 flow [2021-03-25 13:02:02,396 INFO L129 PetriNetUnfolder]: 6/64 cut-off events. [2021-03-25 13:02:02,396 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 13:02:02,397 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. [2021-03-25 13:02:02,403 INFO L142 LiptonReduction]: Number of co-enabled transitions 1116 [2021-03-25 13:02:03,513 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-25 13:02:03,906 INFO L154 LiptonReduction]: Checked pairs total: 1435 [2021-03-25 13:02:03,907 INFO L156 LiptonReduction]: Total number of compositions: 34 [2021-03-25 13:02:03,909 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1559 [2021-03-25 13:02:03,918 INFO L129 PetriNetUnfolder]: 1/20 cut-off events. [2021-03-25 13:02:03,918 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 13:02:03,918 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:02:03,919 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:02:03,919 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 13:02:03,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:02:03,924 INFO L82 PathProgramCache]: Analyzing trace with hash -528344222, now seen corresponding path program 1 times [2021-03-25 13:02:03,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:02:03,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947720039] [2021-03-25 13:02:03,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:02:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:02:04,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:02:04,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:02:04,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:02:04,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 13:02:04,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:02:04,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947720039] [2021-03-25 13:02:04,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:02:04,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 13:02:04,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641956314] [2021-03-25 13:02:04,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 13:02:04,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:02:04,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 13:02:04,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 13:02:04,156 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 108 [2021-03-25 13:02:04,160 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 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) [2021-03-25 13:02:04,160 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:02:04,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 108 [2021-03-25 13:02:04,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:02:04,202 INFO L129 PetriNetUnfolder]: 9/69 cut-off events. [2021-03-25 13:02:04,202 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 13:02:04,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 69 events. 9/69 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 201 event pairs, 2 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 89. Up to 18 conditions per place. [2021-03-25 13:02:04,204 INFO L132 encePairwiseOnDemand]: 103/108 looper letters, 7 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2021-03-25 13:02:04,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 102 flow [2021-03-25 13:02:04,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 13:02:04,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 13:02:04,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2021-03-25 13:02:04,214 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8055555555555556 [2021-03-25 13:02:04,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2021-03-25 13:02:04,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2021-03-25 13:02:04,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:02:04,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2021-03-25 13:02:04,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 13:02:04,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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) [2021-03-25 13:02:04,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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) [2021-03-25 13:02:04,229 INFO L185 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 3 states and 261 transitions. [2021-03-25 13:02:04,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 102 flow [2021-03-25 13:02:04,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 94 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 13:02:04,233 INFO L241 Difference]: Finished difference. Result has 36 places, 33 transitions, 88 flow [2021-03-25 13:02:04,234 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2021-03-25 13:02:04,235 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2021-03-25 13:02:04,235 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:02:04,235 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 33 transitions, 88 flow [2021-03-25 13:02:04,236 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 33 transitions, 88 flow [2021-03-25 13:02:04,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 33 transitions, 88 flow [2021-03-25 13:02:04,245 INFO L129 PetriNetUnfolder]: 3/51 cut-off events. [2021-03-25 13:02:04,245 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 13:02:04,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 51 events. 3/51 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 125 event pairs, 1 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 48. Up to 8 conditions per place. [2021-03-25 13:02:04,246 INFO L142 LiptonReduction]: Number of co-enabled transitions 394 [2021-03-25 13:02:04,587 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-03-25 13:02:04,847 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-03-25 13:02:04,952 INFO L154 LiptonReduction]: Checked pairs total: 702 [2021-03-25 13:02:04,952 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 13:02:04,952 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 717 [2021-03-25 13:02:04,953 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 84 flow [2021-03-25 13:02:04,954 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) [2021-03-25 13:02:04,954 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:02:04,954 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:02:04,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 13:02:04,955 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 13:02:04,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:02:04,955 INFO L82 PathProgramCache]: Analyzing trace with hash 836917484, now seen corresponding path program 1 times [2021-03-25 13:02:04,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:02:04,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187219192] [2021-03-25 13:02:04,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:02:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:02:04,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:02:04,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:02:04,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:02:04,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 13:02:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:02:04,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187219192] [2021-03-25 13:02:04,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:02:04,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 13:02:04,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500746900] [2021-03-25 13:02:04,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 13:02:04,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:02:04,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 13:02:04,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 13:02:04,996 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 110 [2021-03-25 13:02:04,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 84 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) [2021-03-25 13:02:04,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:02:04,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 110 [2021-03-25 13:02:04,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:02:05,024 INFO L129 PetriNetUnfolder]: 4/55 cut-off events. [2021-03-25 13:02:05,024 INFO L130 PetriNetUnfolder]: For 11/14 co-relation queries the response was YES. [2021-03-25 13:02:05,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 55 events. 4/55 cut-off events. For 11/14 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 153 event pairs, 2 based on Foata normal form. 6/59 useless extension candidates. Maximal degree in co-relation 73. Up to 11 conditions per place. [2021-03-25 13:02:05,025 INFO L132 encePairwiseOnDemand]: 106/110 looper letters, 6 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2021-03-25 13:02:05,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 100 flow [2021-03-25 13:02:05,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 13:02:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 13:02:05,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2021-03-25 13:02:05,031 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7848484848484848 [2021-03-25 13:02:05,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2021-03-25 13:02:05,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2021-03-25 13:02:05,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:02:05,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2021-03-25 13:02:05,034 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) [2021-03-25 13:02:05,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2021-03-25 13:02:05,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2021-03-25 13:02:05,036 INFO L185 Difference]: Start difference. First operand has 34 places, 31 transitions, 84 flow. Second operand 3 states and 259 transitions. [2021-03-25 13:02:05,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 100 flow [2021-03-25 13:02:05,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 94 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 13:02:05,038 INFO L241 Difference]: Finished difference. Result has 35 places, 31 transitions, 88 flow [2021-03-25 13:02:05,038 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2021-03-25 13:02:05,039 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2021-03-25 13:02:05,039 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:02:05,039 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 31 transitions, 88 flow [2021-03-25 13:02:05,040 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 31 transitions, 88 flow [2021-03-25 13:02:05,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 88 flow [2021-03-25 13:02:05,052 INFO L129 PetriNetUnfolder]: 4/58 cut-off events. [2021-03-25 13:02:05,052 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-03-25 13:02:05,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 58 events. 4/58 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 175 event pairs, 2 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 64. Up to 10 conditions per place. [2021-03-25 13:02:05,055 INFO L142 LiptonReduction]: Number of co-enabled transitions 370 [2021-03-25 13:02:05,059 INFO L154 LiptonReduction]: Checked pairs total: 182 [2021-03-25 13:02:05,059 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 13:02:05,059 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-03-25 13:02:05,061 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 88 flow [2021-03-25 13:02:05,061 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) [2021-03-25 13:02:05,063 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:02:05,063 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:02:05,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 13:02:05,064 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 13:02:05,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:02:05,068 INFO L82 PathProgramCache]: Analyzing trace with hash -558616392, now seen corresponding path program 1 times [2021-03-25 13:02:05,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:02:05,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503327387] [2021-03-25 13:02:05,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:02:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:02:05,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:02:05,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:02:05,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:02:05,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 13:02:05,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:02:05,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 13:02:05,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:02:05,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 13:02:05,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:02:05,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 13:02:05,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:02:05,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:02:05,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:02:05,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503327387] [2021-03-25 13:02:05,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:02:05,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 13:02:05,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376616705] [2021-03-25 13:02:05,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 13:02:05,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:02:05,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 13:02:05,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 13:02:05,196 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 110 [2021-03-25 13:02:05,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 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) [2021-03-25 13:02:05,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:02:05,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 110 [2021-03-25 13:02:05,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:02:05,356 INFO L129 PetriNetUnfolder]: 70/226 cut-off events. [2021-03-25 13:02:05,356 INFO L130 PetriNetUnfolder]: For 88/90 co-relation queries the response was YES. [2021-03-25 13:02:05,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 226 events. 70/226 cut-off events. For 88/90 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1090 event pairs, 7 based on Foata normal form. 10/235 useless extension candidates. Maximal degree in co-relation 350. Up to 50 conditions per place. [2021-03-25 13:02:05,358 INFO L132 encePairwiseOnDemand]: 100/110 looper letters, 23 selfloop transitions, 13 changer transitions 16/69 dead transitions. [2021-03-25 13:02:05,358 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 69 transitions, 274 flow [2021-03-25 13:02:05,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 13:02:05,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 13:02:05,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 806 transitions. [2021-03-25 13:02:05,361 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7327272727272728 [2021-03-25 13:02:05,361 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 806 transitions. [2021-03-25 13:02:05,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 806 transitions. [2021-03-25 13:02:05,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:02:05,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 806 transitions. [2021-03-25 13:02:05,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.6) internal successors, (806), 10 states have internal predecessors, (806), 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) [2021-03-25 13:02:05,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 110.0) internal successors, (1210), 11 states have internal predecessors, (1210), 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) [2021-03-25 13:02:05,367 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 110.0) internal successors, (1210), 11 states have internal predecessors, (1210), 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) [2021-03-25 13:02:05,367 INFO L185 Difference]: Start difference. First operand has 35 places, 31 transitions, 88 flow. Second operand 10 states and 806 transitions. [2021-03-25 13:02:05,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 69 transitions, 274 flow [2021-03-25 13:02:05,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 69 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 13:02:05,370 INFO L241 Difference]: Finished difference. Result has 52 places, 43 transitions, 194 flow [2021-03-25 13:02:05,370 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=194, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2021-03-25 13:02:05,370 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2021-03-25 13:02:05,370 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:02:05,370 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 43 transitions, 194 flow [2021-03-25 13:02:05,371 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 43 transitions, 194 flow [2021-03-25 13:02:05,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 43 transitions, 194 flow [2021-03-25 13:02:05,382 INFO L129 PetriNetUnfolder]: 20/135 cut-off events. [2021-03-25 13:02:05,383 INFO L130 PetriNetUnfolder]: For 106/109 co-relation queries the response was YES. [2021-03-25 13:02:05,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 135 events. 20/135 cut-off events. For 106/109 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 611 event pairs, 2 based on Foata normal form. 1/135 useless extension candidates. Maximal degree in co-relation 263. Up to 18 conditions per place. [2021-03-25 13:02:05,385 INFO L142 LiptonReduction]: Number of co-enabled transitions 438 [2021-03-25 13:02:05,405 INFO L154 LiptonReduction]: Checked pairs total: 368 [2021-03-25 13:02:05,405 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 13:02:05,406 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-03-25 13:02:05,406 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 196 flow [2021-03-25 13:02:05,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 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) [2021-03-25 13:02:05,407 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:02:05,407 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:02:05,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 13:02:05,407 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 13:02:05,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:02:05,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1842089782, now seen corresponding path program 2 times [2021-03-25 13:02:05,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:02:05,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550669137] [2021-03-25 13:02:05,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:02:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:02:05,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:02:05,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:02:05,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:02:05,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 13:02:05,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:02:05,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 13:02:05,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:02:05,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 13:02:05,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:02:05,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 13:02:05,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:02:05,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:02:05,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:02:05,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550669137] [2021-03-25 13:02:05,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:02:05,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 13:02:05,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610596253] [2021-03-25 13:02:05,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 13:02:05,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:02:05,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 13:02:05,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 13:02:05,486 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 111 [2021-03-25 13:02:05,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 196 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) [2021-03-25 13:02:05,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:02:05,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 111 [2021-03-25 13:02:05,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:02:05,627 INFO L129 PetriNetUnfolder]: 93/246 cut-off events. [2021-03-25 13:02:05,628 INFO L130 PetriNetUnfolder]: For 296/318 co-relation queries the response was YES. [2021-03-25 13:02:05,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 246 events. 93/246 cut-off events. For 296/318 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1092 event pairs, 0 based on Foata normal form. 20/266 useless extension candidates. Maximal degree in co-relation 676. Up to 61 conditions per place. [2021-03-25 13:02:05,629 INFO L132 encePairwiseOnDemand]: 100/111 looper letters, 0 selfloop transitions, 0 changer transitions 82/82 dead transitions. [2021-03-25 13:02:05,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 82 transitions, 486 flow [2021-03-25 13:02:05,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 13:02:05,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 13:02:05,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 836 transitions. [2021-03-25 13:02:05,632 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7531531531531531 [2021-03-25 13:02:05,632 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 836 transitions. [2021-03-25 13:02:05,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 836 transitions. [2021-03-25 13:02:05,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:02:05,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 836 transitions. [2021-03-25 13:02:05,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 83.6) internal successors, (836), 10 states have internal predecessors, (836), 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) [2021-03-25 13:02:05,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 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) [2021-03-25 13:02:05,639 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 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) [2021-03-25 13:02:05,639 INFO L185 Difference]: Start difference. First operand has 50 places, 43 transitions, 196 flow. Second operand 10 states and 836 transitions. [2021-03-25 13:02:05,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 82 transitions, 486 flow [2021-03-25 13:02:05,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 82 transitions, 448 flow, removed 19 selfloop flow, removed 2 redundant places. [2021-03-25 13:02:05,647 INFO L241 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2021-03-25 13:02:05,649 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2021-03-25 13:02:05,650 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2021-03-25 13:02:05,650 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:02:05,650 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 0 transitions, 0 flow [2021-03-25 13:02:05,651 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 0 transitions, 0 flow [2021-03-25 13:02:05,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 13:02:05,652 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 13:02:05,652 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 13:02:05,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 13:02:05,652 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 13:02:05,652 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 13:02:05,652 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 13:02:05,652 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 13:02:05,655 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 13:02:05,656 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) [2021-03-25 13:02:05,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 13:02:05,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 01:02:05 BasicIcfg [2021-03-25 13:02:05,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 13:02:05,663 INFO L168 Benchmark]: Toolchain (without parser) took 4515.90 ms. Allocated memory was 333.4 MB in the beginning and 440.4 MB in the end (delta: 107.0 MB). Free memory was 296.2 MB in the beginning and 302.7 MB in the end (delta: -6.5 MB). Peak memory consumption was 101.6 MB. Max. memory is 16.0 GB. [2021-03-25 13:02:05,663 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 333.4 MB. Free memory was 314.5 MB in the beginning and 314.5 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 13:02:05,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 571.44 ms. Allocated memory is still 333.4 MB. Free memory was 296.0 MB in the beginning and 296.4 MB in the end (delta: -394.8 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-03-25 13:02:05,664 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.82 ms. Allocated memory is still 333.4 MB. Free memory was 296.4 MB in the beginning and 294.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 13:02:05,664 INFO L168 Benchmark]: Boogie Preprocessor took 48.19 ms. Allocated memory is still 333.4 MB. Free memory was 294.3 MB in the beginning and 293.3 MB in the end (delta: 995.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 13:02:05,664 INFO L168 Benchmark]: RCFGBuilder took 317.18 ms. Allocated memory is still 333.4 MB. Free memory was 293.3 MB in the beginning and 271.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 13:02:05,665 INFO L168 Benchmark]: TraceAbstraction took 3516.52 ms. Allocated memory was 333.4 MB in the beginning and 440.4 MB in the end (delta: 107.0 MB). Free memory was 270.2 MB in the beginning and 302.7 MB in the end (delta: -32.5 MB). Peak memory consumption was 75.5 MB. Max. memory is 16.0 GB. [2021-03-25 13:02:05,666 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 333.4 MB. Free memory was 314.5 MB in the beginning and 314.5 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 571.44 ms. Allocated memory is still 333.4 MB. Free memory was 296.0 MB in the beginning and 296.4 MB in the end (delta: -394.8 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 35.82 ms. Allocated memory is still 333.4 MB. Free memory was 296.4 MB in the beginning and 294.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 48.19 ms. Allocated memory is still 333.4 MB. Free memory was 294.3 MB in the beginning and 293.3 MB in the end (delta: 995.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 317.18 ms. Allocated memory is still 333.4 MB. Free memory was 293.3 MB in the beginning and 271.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3516.52 ms. Allocated memory was 333.4 MB in the beginning and 440.4 MB in the end (delta: 107.0 MB). Free memory was 270.2 MB in the beginning and 302.7 MB in the end (delta: -32.5 MB). Peak memory consumption was 75.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1540.3ms, 62 PlacesBefore, 36 PlacesAfterwards, 62 TransitionsBefore, 32 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 34 TotalNumberOfCompositions, 1435 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 851, positive: 795, positive conditional: 0, positive unconditional: 795, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 553, positive: 528, positive conditional: 0, positive unconditional: 528, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 553, positive: 528, positive conditional: 0, positive unconditional: 528, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 553, positive: 525, positive conditional: 0, positive unconditional: 525, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 28, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 96, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 851, positive: 267, positive conditional: 0, positive unconditional: 267, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 553, unknown conditional: 0, unknown unconditional: 553] , Statistics on independence cache: Total cache size (in pairs): 96, Positive cache size: 85, Positive conditional cache size: 0, Positive unconditional cache size: 85, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 716.5ms, 36 PlacesBefore, 34 PlacesAfterwards, 33 TransitionsBefore, 31 TransitionsAfterwards, 394 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 702 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 281, positive: 233, positive conditional: 0, positive unconditional: 233, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 22, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 22, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 22, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 11, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 281, positive: 214, positive conditional: 0, positive unconditional: 214, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 22, unknown conditional: 0, unknown unconditional: 22] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 104, Positive conditional cache size: 0, Positive unconditional cache size: 104, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.8ms, 35 PlacesBefore, 35 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 370 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 182 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 73, positive: 60, positive conditional: 0, positive unconditional: 60, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 73, positive: 59, positive conditional: 0, positive unconditional: 59, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 119, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.8ms, 52 PlacesBefore, 50 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 438 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 368 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 179, positive: 157, positive conditional: 0, positive unconditional: 157, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 179, positive: 149, positive conditional: 0, positive unconditional: 149, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 8, unknown conditional: 0, unknown unconditional: 8] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 104, Positive conditional cache size: 0, Positive unconditional cache size: 104, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9ms, 55 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 104, Positive conditional cache size: 0, Positive unconditional cache size: 104, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 67 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3397.8ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 473.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1650.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 71 SDtfs, 62 SDslu, 54 SDs, 0 SdLazy, 196 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 127.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 102.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=196occurred in iteration=3, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.7ms SsaConstructionTime, 60.5ms SatisfiabilityAnalysisTime, 265.9ms InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...