/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:36:55,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:36:55,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:36:55,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 02:36:55,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 02:36:55,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 02:36:55,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 02:36:55,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 02:36:55,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 02:36:55,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 02:36:55,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 02:36:55,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 02:36:55,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:36:55,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:36:55,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:36:55,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:36:55,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:36:55,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:36:55,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:36:55,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:36:55,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:36:55,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:36:55,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:36:55,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:36:55,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:36:55,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 02:36:55,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 02:36:55,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 02:36:55,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 02:36:55,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 02:36:55,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 02:36:55,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 02:36:55,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 02:36:55,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:36:55,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:36:55,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:36:55,860 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-03-11 02:36:55,891 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:36:55,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:36:55,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:36:55,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:36:55,894 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:36:55,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:36:55,894 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:36:55,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:36:55,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:36:55,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:36:55,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:36:55,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:36:55,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:36:55,896 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:36:55,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:36:55,896 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:36:55,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:36:55,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:36:55,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:36:55,897 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:36:55,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:36:55,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:36:55,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:36:55,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:36:55,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:36:55,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:36:55,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:36:55,898 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:36:55,898 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:36:55,898 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:36:56,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:36:56,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:36:56,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:36:56,210 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:36:56,210 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:36:56,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_pso.oepc.i [2021-03-11 02:36:56,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fde282b8/0510d382e0bf4fe2be1f330c3177f88b/FLAG4b76625be [2021-03-11 02:36:56,758 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:36:56,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_pso.oepc.i [2021-03-11 02:36:56,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fde282b8/0510d382e0bf4fe2be1f330c3177f88b/FLAG4b76625be [2021-03-11 02:36:57,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fde282b8/0510d382e0bf4fe2be1f330c3177f88b [2021-03-11 02:36:57,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:36:57,297 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:36:57,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:36:57,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:36:57,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:36:57,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:36:57" (1/1) ... [2021-03-11 02:36:57,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc650b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:57, skipping insertion in model container [2021-03-11 02:36:57,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:36:57" (1/1) ... [2021-03-11 02:36:57,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:36:57,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:36:57,476 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-wmm/safe029_pso.oepc.i[950,963] [2021-03-11 02:36:57,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:36:57,679 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:36:57,691 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-wmm/safe029_pso.oepc.i[950,963] [2021-03-11 02:36:57,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:36:57,815 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:36:57,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:57 WrapperNode [2021-03-11 02:36:57,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:36:57,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:36:57,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:36:57,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:36:57,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:57" (1/1) ... [2021-03-11 02:36:57,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:57" (1/1) ... [2021-03-11 02:36:57,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:36:57,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:36:57,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:36:57,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:36:57,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:57" (1/1) ... [2021-03-11 02:36:57,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:57" (1/1) ... [2021-03-11 02:36:57,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:57" (1/1) ... [2021-03-11 02:36:57,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:57" (1/1) ... [2021-03-11 02:36:57,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:57" (1/1) ... [2021-03-11 02:36:57,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:57" (1/1) ... [2021-03-11 02:36:57,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:57" (1/1) ... [2021-03-11 02:36:57,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:36:57,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:36:57,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:36:57,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:36:57,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:36:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:36:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:36:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:36:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:36:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:36:57,954 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:36:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:36:57,954 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:36:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:36:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:36:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:36:57,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:36:57,956 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 02:36:59,622 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:36:59,623 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-11 02:36:59,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:36:59 BoogieIcfgContainer [2021-03-11 02:36:59,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:36:59,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:36:59,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:36:59,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:36:59,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:36:57" (1/3) ... [2021-03-11 02:36:59,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6f3ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:36:59, skipping insertion in model container [2021-03-11 02:36:59,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:36:57" (2/3) ... [2021-03-11 02:36:59,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c6f3ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:36:59, skipping insertion in model container [2021-03-11 02:36:59,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:36:59" (3/3) ... [2021-03-11 02:36:59,631 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_pso.oepc.i [2021-03-11 02:36:59,639 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:36:59,643 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-11 02:36:59,644 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:36:59,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,676 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,677 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,677 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,677 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,677 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,677 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,679 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,679 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,680 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,680 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,680 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,680 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,681 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,681 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,685 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,685 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,685 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,686 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,686 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,686 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,687 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,687 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,689 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,689 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,689 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,689 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,689 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,690 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,690 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,690 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,690 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,690 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:36:59,691 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:36:59,706 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-11 02:36:59,736 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:36:59,736 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:36:59,736 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:36:59,736 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:36:59,736 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:36:59,736 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:36:59,737 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:36:59,737 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:36:59,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 79 transitions, 168 flow [2021-03-11 02:36:59,784 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2021-03-11 02:36:59,784 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:36:59,796 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-03-11 02:36:59,796 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 79 transitions, 168 flow [2021-03-11 02:36:59,801 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 77 transitions, 160 flow [2021-03-11 02:36:59,814 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2021-03-11 02:36:59,814 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:36:59,814 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:36:59,816 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:36:59,818 INFO L428 AbstractCegarLoop]: === Iteration 1 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:36:59,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:36:59,822 INFO L82 PathProgramCache]: Analyzing trace with hash 253733698, now seen corresponding path program 1 times [2021-03-11 02:36:59,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:36:59,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367482376] [2021-03-11 02:36:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:36:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:00,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:00,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:00,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:00,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:00,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:37:00,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367482376] [2021-03-11 02:37:00,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:00,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 02:37:00,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215430202] [2021-03-11 02:37:00,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 02:37:00,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:00,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 02:37:00,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 02:37:00,112 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 79 [2021-03-11 02:37:00,115 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:00,115 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:00,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 79 [2021-03-11 02:37:00,116 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:00,177 INFO L129 PetriNetUnfolder]: 16/184 cut-off events. [2021-03-11 02:37:00,177 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:37:00,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 184 events. 16/184 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 647 event pairs, 11 based on Foata normal form. 9/182 useless extension candidates. Maximal degree in co-relation 186. Up to 27 conditions per place. [2021-03-11 02:37:00,180 INFO L132 encePairwiseOnDemand]: 74/79 looper letters, 7 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2021-03-11 02:37:00,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 176 flow [2021-03-11 02:37:00,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 02:37:00,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 02:37:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 221 transitions. [2021-03-11 02:37:00,191 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9324894514767933 [2021-03-11 02:37:00,192 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 221 transitions. [2021-03-11 02:37:00,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 221 transitions. [2021-03-11 02:37:00,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:00,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 221 transitions. [2021-03-11 02:37:00,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:00,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:00,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:00,203 INFO L185 Difference]: Start difference. First operand has 82 places, 77 transitions, 160 flow. Second operand 3 states and 221 transitions. [2021-03-11 02:37:00,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 176 flow [2021-03-11 02:37:00,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 76 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 02:37:00,209 INFO L241 Difference]: Finished difference. Result has 80 places, 73 transitions, 154 flow [2021-03-11 02:37:00,210 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=80, PETRI_TRANSITIONS=73} [2021-03-11 02:37:00,211 INFO L335 CegarLoopForPetriNet]: 82 programPoint places, -2 predicate places. [2021-03-11 02:37:00,211 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 73 transitions, 154 flow [2021-03-11 02:37:00,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:00,212 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:00,212 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:37:00,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:37:00,212 INFO L428 AbstractCegarLoop]: === Iteration 2 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:00,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:00,212 INFO L82 PathProgramCache]: Analyzing trace with hash 2045888562, now seen corresponding path program 1 times [2021-03-11 02:37:00,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:00,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596870427] [2021-03-11 02:37:00,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:00,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:00,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:00,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:00,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:00,445 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:37:00,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:37:00,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:00,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:00,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:00,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:00,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:00,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:37:00,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596870427] [2021-03-11 02:37:00,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:00,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:37:00,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878298120] [2021-03-11 02:37:00,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:37:00,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:00,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:37:00,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:37:00,487 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 79 [2021-03-11 02:37:00,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 73 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:00,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:00,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 79 [2021-03-11 02:37:00,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:00,658 INFO L129 PetriNetUnfolder]: 30/211 cut-off events. [2021-03-11 02:37:00,658 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:37:00,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 211 events. 30/211 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 839 event pairs, 6 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 252. Up to 36 conditions per place. [2021-03-11 02:37:00,660 INFO L132 encePairwiseOnDemand]: 72/79 looper letters, 8 selfloop transitions, 3 changer transitions 29/96 dead transitions. [2021-03-11 02:37:00,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 96 transitions, 266 flow [2021-03-11 02:37:00,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:37:00,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:37:00,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 629 transitions. [2021-03-11 02:37:00,665 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8846694796061885 [2021-03-11 02:37:00,666 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 629 transitions. [2021-03-11 02:37:00,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 629 transitions. [2021-03-11 02:37:00,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:00,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 629 transitions. [2021-03-11 02:37:00,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 69.88888888888889) internal successors, (629), 9 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:00,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:00,673 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:00,673 INFO L185 Difference]: Start difference. First operand has 80 places, 73 transitions, 154 flow. Second operand 9 states and 629 transitions. [2021-03-11 02:37:00,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 96 transitions, 266 flow [2021-03-11 02:37:00,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 96 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 02:37:00,681 INFO L241 Difference]: Finished difference. Result has 93 places, 67 transitions, 177 flow [2021-03-11 02:37:00,682 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=177, PETRI_PLACES=93, PETRI_TRANSITIONS=67} [2021-03-11 02:37:00,682 INFO L335 CegarLoopForPetriNet]: 82 programPoint places, 11 predicate places. [2021-03-11 02:37:00,682 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 67 transitions, 177 flow [2021-03-11 02:37:00,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:00,683 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:00,683 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:37:00,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:37:00,683 INFO L428 AbstractCegarLoop]: === Iteration 3 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:00,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:00,684 INFO L82 PathProgramCache]: Analyzing trace with hash 2083401873, now seen corresponding path program 1 times [2021-03-11 02:37:00,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:00,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697459277] [2021-03-11 02:37:00,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:00,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:00,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:00,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:00,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:00,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:00,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:37:00,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:00,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 02:37:00,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:00,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:37:00,895 INFO L142 QuantifierPusher]: treesize reduction 26, result has 56.7 percent of original size [2021-03-11 02:37:00,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 02:37:00,925 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:37:00,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:37:00,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:00,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:00,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:00,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:00,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:00,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:37:00,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697459277] [2021-03-11 02:37:00,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:00,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-11 02:37:00,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736662209] [2021-03-11 02:37:00,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-11 02:37:00,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:00,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-11 02:37:00,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-03-11 02:37:00,968 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 79 [2021-03-11 02:37:00,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 67 transitions, 177 flow. Second operand has 10 states, 10 states have (on average 60.1) internal successors, (601), 10 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:00,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:00,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 79 [2021-03-11 02:37:00,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:01,351 INFO L129 PetriNetUnfolder]: 161/412 cut-off events. [2021-03-11 02:37:01,351 INFO L130 PetriNetUnfolder]: For 314/314 co-relation queries the response was YES. [2021-03-11 02:37:01,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 412 events. 161/412 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1903 event pairs, 45 based on Foata normal form. 12/410 useless extension candidates. Maximal degree in co-relation 923. Up to 173 conditions per place. [2021-03-11 02:37:01,355 INFO L132 encePairwiseOnDemand]: 67/79 looper letters, 12 selfloop transitions, 10 changer transitions 34/108 dead transitions. [2021-03-11 02:37:01,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 108 transitions, 399 flow [2021-03-11 02:37:01,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-11 02:37:01,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-11 02:37:01,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 944 transitions. [2021-03-11 02:37:01,359 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7966244725738396 [2021-03-11 02:37:01,359 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 944 transitions. [2021-03-11 02:37:01,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 944 transitions. [2021-03-11 02:37:01,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:01,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 944 transitions. [2021-03-11 02:37:01,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 62.93333333333333) internal successors, (944), 15 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:01,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 79.0) internal successors, (1264), 16 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:01,367 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 79.0) internal successors, (1264), 16 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:01,367 INFO L185 Difference]: Start difference. First operand has 93 places, 67 transitions, 177 flow. Second operand 15 states and 944 transitions. [2021-03-11 02:37:01,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 108 transitions, 399 flow [2021-03-11 02:37:01,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 108 transitions, 378 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-03-11 02:37:01,372 INFO L241 Difference]: Finished difference. Result has 100 places, 73 transitions, 254 flow [2021-03-11 02:37:01,372 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=254, PETRI_PLACES=100, PETRI_TRANSITIONS=73} [2021-03-11 02:37:01,372 INFO L335 CegarLoopForPetriNet]: 82 programPoint places, 18 predicate places. [2021-03-11 02:37:01,373 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 73 transitions, 254 flow [2021-03-11 02:37:01,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 60.1) internal successors, (601), 10 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:01,373 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:01,373 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:37:01,373 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:37:01,373 INFO L428 AbstractCegarLoop]: === Iteration 4 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:01,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:01,374 INFO L82 PathProgramCache]: Analyzing trace with hash 466918737, now seen corresponding path program 1 times [2021-03-11 02:37:01,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:01,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183091471] [2021-03-11 02:37:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:01,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:01,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:01,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:01,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:01,441 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:37:01,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:37:01,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:01,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:01,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:01,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:01,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:01,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:01,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:37:01,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183091471] [2021-03-11 02:37:01,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:01,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:37:01,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145663577] [2021-03-11 02:37:01,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:37:01,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:01,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:37:01,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:37:01,478 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 79 [2021-03-11 02:37:01,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 73 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 67.33333333333333) internal successors, (404), 6 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:01,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:01,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 79 [2021-03-11 02:37:01,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:01,636 INFO L129 PetriNetUnfolder]: 58/316 cut-off events. [2021-03-11 02:37:01,637 INFO L130 PetriNetUnfolder]: For 838/862 co-relation queries the response was YES. [2021-03-11 02:37:01,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 316 events. 58/316 cut-off events. For 838/862 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1693 event pairs, 9 based on Foata normal form. 10/317 useless extension candidates. Maximal degree in co-relation 920. Up to 66 conditions per place. [2021-03-11 02:37:01,640 INFO L132 encePairwiseOnDemand]: 73/79 looper letters, 14 selfloop transitions, 7 changer transitions 6/88 dead transitions. [2021-03-11 02:37:01,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 88 transitions, 429 flow [2021-03-11 02:37:01,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:37:01,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:37:01,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 620 transitions. [2021-03-11 02:37:01,642 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8720112517580872 [2021-03-11 02:37:01,642 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 620 transitions. [2021-03-11 02:37:01,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 620 transitions. [2021-03-11 02:37:01,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:01,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 620 transitions. [2021-03-11 02:37:01,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.88888888888889) internal successors, (620), 9 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:01,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:01,646 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:01,646 INFO L185 Difference]: Start difference. First operand has 100 places, 73 transitions, 254 flow. Second operand 9 states and 620 transitions. [2021-03-11 02:37:01,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 88 transitions, 429 flow [2021-03-11 02:37:01,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 88 transitions, 397 flow, removed 14 selfloop flow, removed 5 redundant places. [2021-03-11 02:37:01,654 INFO L241 Difference]: Finished difference. Result has 101 places, 77 transitions, 314 flow [2021-03-11 02:37:01,654 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=314, PETRI_PLACES=101, PETRI_TRANSITIONS=77} [2021-03-11 02:37:01,654 INFO L335 CegarLoopForPetriNet]: 82 programPoint places, 19 predicate places. [2021-03-11 02:37:01,655 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 77 transitions, 314 flow [2021-03-11 02:37:01,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 67.33333333333333) internal successors, (404), 6 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:01,655 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:01,655 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:37:01,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:37:01,655 INFO L428 AbstractCegarLoop]: === Iteration 5 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:01,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:01,656 INFO L82 PathProgramCache]: Analyzing trace with hash -961937743, now seen corresponding path program 1 times [2021-03-11 02:37:01,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:01,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544637318] [2021-03-11 02:37:01,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:01,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:01,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:01,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:01,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:01,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:01,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:37:01,763 INFO L142 QuantifierPusher]: treesize reduction 26, result has 51.9 percent of original size [2021-03-11 02:37:01,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 02:37:01,779 INFO L142 QuantifierPusher]: treesize reduction 26, result has 54.4 percent of original size [2021-03-11 02:37:01,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 02:37:01,797 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:37:01,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:37:01,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:01,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:01,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:01,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:01,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:01,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:01,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:37:01,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544637318] [2021-03-11 02:37:01,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:01,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-11 02:37:01,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185227635] [2021-03-11 02:37:01,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 02:37:01,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:01,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 02:37:01,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-03-11 02:37:01,836 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 79 [2021-03-11 02:37:01,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 77 transitions, 314 flow. Second operand has 9 states, 9 states have (on average 61.22222222222222) internal successors, (551), 9 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:01,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:01,836 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 79 [2021-03-11 02:37:01,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:02,263 INFO L129 PetriNetUnfolder]: 195/508 cut-off events. [2021-03-11 02:37:02,264 INFO L130 PetriNetUnfolder]: For 2136/2203 co-relation queries the response was YES. [2021-03-11 02:37:02,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1963 conditions, 508 events. 195/508 cut-off events. For 2136/2203 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2559 event pairs, 74 based on Foata normal form. 12/508 useless extension candidates. Maximal degree in co-relation 1897. Up to 276 conditions per place. [2021-03-11 02:37:02,269 INFO L132 encePairwiseOnDemand]: 69/79 looper letters, 22 selfloop transitions, 8 changer transitions 29/112 dead transitions. [2021-03-11 02:37:02,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 112 transitions, 692 flow [2021-03-11 02:37:02,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-11 02:37:02,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-11 02:37:02,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 893 transitions. [2021-03-11 02:37:02,273 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8074141048824593 [2021-03-11 02:37:02,273 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 893 transitions. [2021-03-11 02:37:02,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 893 transitions. [2021-03-11 02:37:02,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:02,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 893 transitions. [2021-03-11 02:37:02,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 63.785714285714285) internal successors, (893), 14 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:02,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 79.0) internal successors, (1185), 15 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:02,277 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 79.0) internal successors, (1185), 15 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:02,277 INFO L185 Difference]: Start difference. First operand has 101 places, 77 transitions, 314 flow. Second operand 14 states and 893 transitions. [2021-03-11 02:37:02,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 112 transitions, 692 flow [2021-03-11 02:37:02,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 112 transitions, 649 flow, removed 20 selfloop flow, removed 4 redundant places. [2021-03-11 02:37:02,286 INFO L241 Difference]: Finished difference. Result has 117 places, 76 transitions, 322 flow [2021-03-11 02:37:02,286 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=322, PETRI_PLACES=117, PETRI_TRANSITIONS=76} [2021-03-11 02:37:02,286 INFO L335 CegarLoopForPetriNet]: 82 programPoint places, 35 predicate places. [2021-03-11 02:37:02,286 INFO L480 AbstractCegarLoop]: Abstraction has has 117 places, 76 transitions, 322 flow [2021-03-11 02:37:02,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 61.22222222222222) internal successors, (551), 9 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:02,286 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:02,287 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:37:02,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:37:02,287 INFO L428 AbstractCegarLoop]: === Iteration 6 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:02,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:02,287 INFO L82 PathProgramCache]: Analyzing trace with hash -335481881, now seen corresponding path program 2 times [2021-03-11 02:37:02,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:02,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803688399] [2021-03-11 02:37:02,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:02,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:02,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:02,432 INFO L142 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-03-11 02:37:02,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:02,437 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-11 02:37:02,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:37:02,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:02,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-11 02:37:02,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:02,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 02:37:02,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:02,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:37:02,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:02,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-11 02:37:02,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:02,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:37:02,518 INFO L142 QuantifierPusher]: treesize reduction 19, result has 76.3 percent of original size [2021-03-11 02:37:02,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 02:37:02,543 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:37:02,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:37:02,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:02,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:02,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:02,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:02,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:02,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:37:02,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803688399] [2021-03-11 02:37:02,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:02,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-03-11 02:37:02,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702370058] [2021-03-11 02:37:02,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-11 02:37:02,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:02,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-11 02:37:02,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-03-11 02:37:02,598 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 79 [2021-03-11 02:37:02,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 76 transitions, 322 flow. Second operand has 13 states, 13 states have (on average 55.15384615384615) internal successors, (717), 13 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:02,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:02,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 79 [2021-03-11 02:37:02,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:03,308 INFO L129 PetriNetUnfolder]: 357/888 cut-off events. [2021-03-11 02:37:03,309 INFO L130 PetriNetUnfolder]: For 5040/5081 co-relation queries the response was YES. [2021-03-11 02:37:03,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3429 conditions, 888 events. 357/888 cut-off events. For 5040/5081 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5327 event pairs, 56 based on Foata normal form. 25/907 useless extension candidates. Maximal degree in co-relation 3351. Up to 251 conditions per place. [2021-03-11 02:37:03,317 INFO L132 encePairwiseOnDemand]: 66/79 looper letters, 37 selfloop transitions, 13 changer transitions 50/147 dead transitions. [2021-03-11 02:37:03,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 147 transitions, 1080 flow [2021-03-11 02:37:03,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-11 02:37:03,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-03-11 02:37:03,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1231 transitions. [2021-03-11 02:37:03,321 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7420132610006027 [2021-03-11 02:37:03,321 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1231 transitions. [2021-03-11 02:37:03,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1231 transitions. [2021-03-11 02:37:03,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:03,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1231 transitions. [2021-03-11 02:37:03,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 58.61904761904762) internal successors, (1231), 21 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:03,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 79.0) internal successors, (1738), 22 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:03,329 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 79.0) internal successors, (1738), 22 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:03,329 INFO L185 Difference]: Start difference. First operand has 117 places, 76 transitions, 322 flow. Second operand 21 states and 1231 transitions. [2021-03-11 02:37:03,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 147 transitions, 1080 flow [2021-03-11 02:37:03,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 147 transitions, 953 flow, removed 57 selfloop flow, removed 11 redundant places. [2021-03-11 02:37:03,340 INFO L241 Difference]: Finished difference. Result has 129 places, 80 transitions, 374 flow [2021-03-11 02:37:03,340 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=374, PETRI_PLACES=129, PETRI_TRANSITIONS=80} [2021-03-11 02:37:03,340 INFO L335 CegarLoopForPetriNet]: 82 programPoint places, 47 predicate places. [2021-03-11 02:37:03,341 INFO L480 AbstractCegarLoop]: Abstraction has has 129 places, 80 transitions, 374 flow [2021-03-11 02:37:03,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 55.15384615384615) internal successors, (717), 13 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:03,341 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:03,341 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:37:03,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:37:03,341 INFO L428 AbstractCegarLoop]: === Iteration 7 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:03,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:03,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1958708593, now seen corresponding path program 1 times [2021-03-11 02:37:03,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:03,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976427681] [2021-03-11 02:37:03,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:03,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:03,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:03,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:03,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:03,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:03,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:37:03,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:03,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 02:37:03,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:03,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:37:03,474 INFO L142 QuantifierPusher]: treesize reduction 21, result has 74.1 percent of original size [2021-03-11 02:37:03,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 02:37:03,503 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:37:03,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:37:03,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:03,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:03,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:03,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:03,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:03,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:37:03,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976427681] [2021-03-11 02:37:03,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:03,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-11 02:37:03,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097133215] [2021-03-11 02:37:03,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-11 02:37:03,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:03,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-11 02:37:03,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-03-11 02:37:03,545 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 79 [2021-03-11 02:37:03,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 80 transitions, 374 flow. Second operand has 10 states, 10 states have (on average 59.3) internal successors, (593), 10 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:03,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:03,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 79 [2021-03-11 02:37:03,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:03,852 INFO L129 PetriNetUnfolder]: 157/544 cut-off events. [2021-03-11 02:37:03,853 INFO L130 PetriNetUnfolder]: For 4035/4140 co-relation queries the response was YES. [2021-03-11 02:37:03,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2283 conditions, 544 events. 157/544 cut-off events. For 4035/4140 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3224 event pairs, 57 based on Foata normal form. 43/576 useless extension candidates. Maximal degree in co-relation 2195. Up to 162 conditions per place. [2021-03-11 02:37:03,858 INFO L132 encePairwiseOnDemand]: 68/79 looper letters, 18 selfloop transitions, 10 changer transitions 23/105 dead transitions. [2021-03-11 02:37:03,858 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 105 transitions, 702 flow [2021-03-11 02:37:03,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:37:03,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:37:03,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 800 transitions. [2021-03-11 02:37:03,861 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7789678675754625 [2021-03-11 02:37:03,861 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 800 transitions. [2021-03-11 02:37:03,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 800 transitions. [2021-03-11 02:37:03,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:03,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 800 transitions. [2021-03-11 02:37:03,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 61.53846153846154) internal successors, (800), 13 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:03,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:03,865 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:03,865 INFO L185 Difference]: Start difference. First operand has 129 places, 80 transitions, 374 flow. Second operand 13 states and 800 transitions. [2021-03-11 02:37:03,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 105 transitions, 702 flow [2021-03-11 02:37:03,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 105 transitions, 625 flow, removed 34 selfloop flow, removed 16 redundant places. [2021-03-11 02:37:03,872 INFO L241 Difference]: Finished difference. Result has 120 places, 81 transitions, 389 flow [2021-03-11 02:37:03,873 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=389, PETRI_PLACES=120, PETRI_TRANSITIONS=81} [2021-03-11 02:37:03,873 INFO L335 CegarLoopForPetriNet]: 82 programPoint places, 38 predicate places. [2021-03-11 02:37:03,873 INFO L480 AbstractCegarLoop]: Abstraction has has 120 places, 81 transitions, 389 flow [2021-03-11 02:37:03,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 59.3) internal successors, (593), 10 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:03,873 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:03,874 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:37:03,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 02:37:03,874 INFO L428 AbstractCegarLoop]: === Iteration 8 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:03,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:03,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1555234223, now seen corresponding path program 1 times [2021-03-11 02:37:03,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:03,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737081854] [2021-03-11 02:37:03,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:03,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:03,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:03,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:03,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:03,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:03,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:37:03,960 INFO L142 QuantifierPusher]: treesize reduction 21, result has 74.1 percent of original size [2021-03-11 02:37:03,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 02:37:03,971 INFO L142 QuantifierPusher]: treesize reduction 47, result has 63.3 percent of original size [2021-03-11 02:37:03,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-11 02:37:04,005 INFO L142 QuantifierPusher]: treesize reduction 47, result has 64.1 percent of original size [2021-03-11 02:37:04,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-03-11 02:37:04,040 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:37:04,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:37:04,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:04,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:04,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:04,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:04,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:04,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:37:04,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737081854] [2021-03-11 02:37:04,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:04,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-11 02:37:04,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57008188] [2021-03-11 02:37:04,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 02:37:04,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:04,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 02:37:04,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-03-11 02:37:04,082 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 79 [2021-03-11 02:37:04,083 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 81 transitions, 389 flow. Second operand has 9 states, 9 states have (on average 60.44444444444444) internal successors, (544), 9 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:04,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:04,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 79 [2021-03-11 02:37:04,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:04,458 INFO L129 PetriNetUnfolder]: 128/484 cut-off events. [2021-03-11 02:37:04,458 INFO L130 PetriNetUnfolder]: For 3729/3839 co-relation queries the response was YES. [2021-03-11 02:37:04,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2203 conditions, 484 events. 128/484 cut-off events. For 3729/3839 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2814 event pairs, 25 based on Foata normal form. 41/517 useless extension candidates. Maximal degree in co-relation 2120. Up to 98 conditions per place. [2021-03-11 02:37:04,463 INFO L132 encePairwiseOnDemand]: 68/79 looper letters, 20 selfloop transitions, 12 changer transitions 24/110 dead transitions. [2021-03-11 02:37:04,463 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 110 transitions, 845 flow [2021-03-11 02:37:04,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-11 02:37:04,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-11 02:37:04,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 874 transitions. [2021-03-11 02:37:04,466 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7902350813743219 [2021-03-11 02:37:04,466 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 874 transitions. [2021-03-11 02:37:04,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 874 transitions. [2021-03-11 02:37:04,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:04,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 874 transitions. [2021-03-11 02:37:04,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 62.42857142857143) internal successors, (874), 14 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:04,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 79.0) internal successors, (1185), 15 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:04,471 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 79.0) internal successors, (1185), 15 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:04,471 INFO L185 Difference]: Start difference. First operand has 120 places, 81 transitions, 389 flow. Second operand 14 states and 874 transitions. [2021-03-11 02:37:04,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 110 transitions, 845 flow [2021-03-11 02:37:04,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 110 transitions, 804 flow, removed 13 selfloop flow, removed 8 redundant places. [2021-03-11 02:37:04,479 INFO L241 Difference]: Finished difference. Result has 126 places, 80 transitions, 434 flow [2021-03-11 02:37:04,479 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=434, PETRI_PLACES=126, PETRI_TRANSITIONS=80} [2021-03-11 02:37:04,479 INFO L335 CegarLoopForPetriNet]: 82 programPoint places, 44 predicate places. [2021-03-11 02:37:04,479 INFO L480 AbstractCegarLoop]: Abstraction has has 126 places, 80 transitions, 434 flow [2021-03-11 02:37:04,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 60.44444444444444) internal successors, (544), 9 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:04,480 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:04,480 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:37:04,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 02:37:04,480 INFO L428 AbstractCegarLoop]: === Iteration 9 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:04,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:04,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1655584016, now seen corresponding path program 1 times [2021-03-11 02:37:04,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:04,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111283648] [2021-03-11 02:37:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:04,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:04,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:04,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:04,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:04,550 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:37:04,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:37:04,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:04,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:37:04,576 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:37:04,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:04,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:04,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:37:04,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111283648] [2021-03-11 02:37:04,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:04,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:37:04,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496835351] [2021-03-11 02:37:04,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:37:04,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:04,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:37:04,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:37:04,588 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 79 [2021-03-11 02:37:04,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 80 transitions, 434 flow. Second operand has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:04,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:04,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 79 [2021-03-11 02:37:04,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:04,756 INFO L129 PetriNetUnfolder]: 117/460 cut-off events. [2021-03-11 02:37:04,756 INFO L130 PetriNetUnfolder]: For 2457/2495 co-relation queries the response was YES. [2021-03-11 02:37:04,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 460 events. 117/460 cut-off events. For 2457/2495 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2879 event pairs, 29 based on Foata normal form. 19/446 useless extension candidates. Maximal degree in co-relation 1586. Up to 81 conditions per place. [2021-03-11 02:37:04,761 INFO L132 encePairwiseOnDemand]: 70/79 looper letters, 13 selfloop transitions, 14 changer transitions 6/96 dead transitions. [2021-03-11 02:37:04,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 96 transitions, 559 flow [2021-03-11 02:37:04,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:37:04,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:37:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 695 transitions. [2021-03-11 02:37:04,763 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.879746835443038 [2021-03-11 02:37:04,764 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 695 transitions. [2021-03-11 02:37:04,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 695 transitions. [2021-03-11 02:37:04,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:04,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 695 transitions. [2021-03-11 02:37:04,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 69.5) internal successors, (695), 10 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:04,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 79.0) internal successors, (869), 11 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:04,768 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 79.0) internal successors, (869), 11 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:04,768 INFO L185 Difference]: Start difference. First operand has 126 places, 80 transitions, 434 flow. Second operand 10 states and 695 transitions. [2021-03-11 02:37:04,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 96 transitions, 559 flow [2021-03-11 02:37:04,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 96 transitions, 502 flow, removed 16 selfloop flow, removed 17 redundant places. [2021-03-11 02:37:04,777 INFO L241 Difference]: Finished difference. Result has 115 places, 85 transitions, 427 flow [2021-03-11 02:37:04,777 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=427, PETRI_PLACES=115, PETRI_TRANSITIONS=85} [2021-03-11 02:37:04,777 INFO L335 CegarLoopForPetriNet]: 82 programPoint places, 33 predicate places. [2021-03-11 02:37:04,777 INFO L480 AbstractCegarLoop]: Abstraction has has 115 places, 85 transitions, 427 flow [2021-03-11 02:37:04,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:04,778 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:04,778 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:37:04,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 02:37:04,778 INFO L428 AbstractCegarLoop]: === Iteration 10 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:04,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:04,779 INFO L82 PathProgramCache]: Analyzing trace with hash -2115360087, now seen corresponding path program 1 times [2021-03-11 02:37:04,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:04,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350588707] [2021-03-11 02:37:04,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:04,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:04,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:04,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:04,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:04,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:04,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:04,843 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:37:04,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:37:04,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:04,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:37:04,865 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:37:04,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:04,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:04,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:04,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:37:04,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350588707] [2021-03-11 02:37:04,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:04,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:37:04,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490684840] [2021-03-11 02:37:04,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:37:04,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:04,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:37:04,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:37:04,878 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 79 [2021-03-11 02:37:04,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 85 transitions, 427 flow. Second operand has 7 states, 7 states have (on average 67.14285714285714) internal successors, (470), 7 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:04,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:04,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 79 [2021-03-11 02:37:04,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:05,066 INFO L129 PetriNetUnfolder]: 75/360 cut-off events. [2021-03-11 02:37:05,066 INFO L130 PetriNetUnfolder]: For 939/1075 co-relation queries the response was YES. [2021-03-11 02:37:05,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 360 events. 75/360 cut-off events. For 939/1075 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2363 event pairs, 0 based on Foata normal form. 70/408 useless extension candidates. Maximal degree in co-relation 1050. Up to 72 conditions per place. [2021-03-11 02:37:05,069 INFO L132 encePairwiseOnDemand]: 70/79 looper letters, 11 selfloop transitions, 17 changer transitions 16/103 dead transitions. [2021-03-11 02:37:05,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 103 transitions, 591 flow [2021-03-11 02:37:05,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:37:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:37:05,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 894 transitions. [2021-03-11 02:37:05,072 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8704965920155794 [2021-03-11 02:37:05,072 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 894 transitions. [2021-03-11 02:37:05,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 894 transitions. [2021-03-11 02:37:05,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:05,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 894 transitions. [2021-03-11 02:37:05,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.76923076923077) internal successors, (894), 13 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:05,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:05,077 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:05,077 INFO L185 Difference]: Start difference. First operand has 115 places, 85 transitions, 427 flow. Second operand 13 states and 894 transitions. [2021-03-11 02:37:05,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 103 transitions, 591 flow [2021-03-11 02:37:05,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 103 transitions, 475 flow, removed 57 selfloop flow, removed 16 redundant places. [2021-03-11 02:37:05,085 INFO L241 Difference]: Finished difference. Result has 118 places, 84 transitions, 384 flow [2021-03-11 02:37:05,086 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=384, PETRI_PLACES=118, PETRI_TRANSITIONS=84} [2021-03-11 02:37:05,086 INFO L335 CegarLoopForPetriNet]: 82 programPoint places, 36 predicate places. [2021-03-11 02:37:05,086 INFO L480 AbstractCegarLoop]: Abstraction has has 118 places, 84 transitions, 384 flow [2021-03-11 02:37:05,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 67.14285714285714) internal successors, (470), 7 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:05,086 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:05,086 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:37:05,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 02:37:05,086 INFO L428 AbstractCegarLoop]: === Iteration 11 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:05,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:05,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1190496646, now seen corresponding path program 1 times [2021-03-11 02:37:05,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:05,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929832533] [2021-03-11 02:37:05,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:05,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:05,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:05,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:05,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:05,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:05,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:37:05,190 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.6 percent of original size [2021-03-11 02:37:05,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 02:37:05,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:05,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:37:05,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:05,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-11 02:37:05,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:05,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 02:37:05,266 INFO L142 QuantifierPusher]: treesize reduction 26, result has 54.4 percent of original size [2021-03-11 02:37:05,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 02:37:05,287 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:37:05,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:37:05,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:05,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:05,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:05,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:05,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:05,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:37:05,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929832533] [2021-03-11 02:37:05,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:05,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-11 02:37:05,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778470050] [2021-03-11 02:37:05,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-11 02:37:05,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:05,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-11 02:37:05,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-03-11 02:37:05,328 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 79 [2021-03-11 02:37:05,329 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 84 transitions, 384 flow. Second operand has 12 states, 12 states have (on average 57.5) internal successors, (690), 12 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:05,329 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:05,329 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 79 [2021-03-11 02:37:05,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:05,511 INFO L129 PetriNetUnfolder]: 17/191 cut-off events. [2021-03-11 02:37:05,511 INFO L130 PetriNetUnfolder]: For 331/338 co-relation queries the response was YES. [2021-03-11 02:37:05,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 191 events. 17/191 cut-off events. For 331/338 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 900 event pairs, 0 based on Foata normal form. 3/188 useless extension candidates. Maximal degree in co-relation 511. Up to 28 conditions per place. [2021-03-11 02:37:05,512 INFO L132 encePairwiseOnDemand]: 70/79 looper letters, 15 selfloop transitions, 5 changer transitions 10/90 dead transitions. [2021-03-11 02:37:05,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 90 transitions, 457 flow [2021-03-11 02:37:05,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:37:05,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:37:05,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 587 transitions. [2021-03-11 02:37:05,514 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7430379746835443 [2021-03-11 02:37:05,514 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 587 transitions. [2021-03-11 02:37:05,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 587 transitions. [2021-03-11 02:37:05,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:05,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 587 transitions. [2021-03-11 02:37:05,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.7) internal successors, (587), 10 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:05,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 79.0) internal successors, (869), 11 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:05,522 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 79.0) internal successors, (869), 11 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:05,523 INFO L185 Difference]: Start difference. First operand has 118 places, 84 transitions, 384 flow. Second operand 10 states and 587 transitions. [2021-03-11 02:37:05,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 90 transitions, 457 flow [2021-03-11 02:37:05,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 90 transitions, 393 flow, removed 8 selfloop flow, removed 16 redundant places. [2021-03-11 02:37:05,526 INFO L241 Difference]: Finished difference. Result has 111 places, 80 transitions, 312 flow [2021-03-11 02:37:05,526 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=312, PETRI_PLACES=111, PETRI_TRANSITIONS=80} [2021-03-11 02:37:05,526 INFO L335 CegarLoopForPetriNet]: 82 programPoint places, 29 predicate places. [2021-03-11 02:37:05,526 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 80 transitions, 312 flow [2021-03-11 02:37:05,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 57.5) internal successors, (690), 12 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:05,527 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:05,527 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:37:05,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 02:37:05,527 INFO L428 AbstractCegarLoop]: === Iteration 12 === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:05,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:05,527 INFO L82 PathProgramCache]: Analyzing trace with hash 135111464, now seen corresponding path program 2 times [2021-03-11 02:37:05,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:05,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621865840] [2021-03-11 02:37:05,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 02:37:05,567 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 02:37:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 02:37:05,621 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 02:37:05,666 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 02:37:05,666 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 02:37:05,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 02:37:05,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:37:05 BasicIcfg [2021-03-11 02:37:05,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:37:05,793 INFO L168 Benchmark]: Toolchain (without parser) took 8494.98 ms. Allocated memory was 350.2 MB in the beginning and 541.1 MB in the end (delta: 190.8 MB). Free memory was 313.1 MB in the beginning and 512.4 MB in the end (delta: -199.4 MB). Peak memory consumption was 228.5 MB. Max. memory is 16.0 GB. [2021-03-11 02:37:05,794 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 350.2 MB. Free memory was 331.7 MB in the beginning and 331.6 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:37:05,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 518.68 ms. Allocated memory is still 350.2 MB. Free memory was 312.5 MB in the beginning and 310.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-03-11 02:37:05,795 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.12 ms. Allocated memory is still 350.2 MB. Free memory was 310.4 MB in the beginning and 308.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:37:05,795 INFO L168 Benchmark]: Boogie Preprocessor took 29.66 ms. Allocated memory is still 350.2 MB. Free memory was 307.4 MB in the beginning and 306.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:37:05,796 INFO L168 Benchmark]: RCFGBuilder took 1732.11 ms. Allocated memory is still 350.2 MB. Free memory was 306.3 MB in the beginning and 307.8 MB in the end (delta: -1.4 MB). Peak memory consumption was 182.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:37:05,796 INFO L168 Benchmark]: TraceAbstraction took 6161.18 ms. Allocated memory was 350.2 MB in the beginning and 541.1 MB in the end (delta: 190.8 MB). Free memory was 307.8 MB in the beginning and 512.4 MB in the end (delta: -204.7 MB). Peak memory consumption was 223.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:37:05,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 350.2 MB. Free memory was 331.7 MB in the beginning and 331.6 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 518.68 ms. Allocated memory is still 350.2 MB. Free memory was 312.5 MB in the beginning and 310.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 43.12 ms. Allocated memory is still 350.2 MB. Free memory was 310.4 MB in the beginning and 308.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.66 ms. Allocated memory is still 350.2 MB. Free memory was 307.4 MB in the beginning and 306.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1732.11 ms. Allocated memory is still 350.2 MB. Free memory was 306.3 MB in the beginning and 307.8 MB in the end (delta: -1.4 MB). Peak memory consumption was 182.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6161.18 ms. Allocated memory was 350.2 MB in the beginning and 541.1 MB in the end (delta: 190.8 MB). Free memory was 307.8 MB in the beginning and 512.4 MB in the end (delta: -204.7 MB). Peak memory consumption was 223.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; VAL [__unbuffered_cnt=0] [L709] 0 _Bool main$tmp_guard0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0] [L710] 0 _Bool main$tmp_guard1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0] [L712] 0 int x = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0] [L714] 0 int y = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L715] 0 _Bool y$flush_delayed; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0] [L716] 0 int y$mem_tmp; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0] [L717] 0 _Bool y$r_buff0_thd0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0] [L718] 0 _Bool y$r_buff0_thd1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0] [L719] 0 _Bool y$r_buff0_thd2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0] [L720] 0 _Bool y$r_buff1_thd0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0] [L721] 0 _Bool y$r_buff1_thd1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0] [L722] 0 _Bool y$r_buff1_thd2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0] [L723] 0 _Bool y$read_delayed; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0] [L724] 0 int *y$read_delayed_var; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}] [L725] 0 int y$w_buff0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0] [L726] 0 _Bool y$w_buff0_used; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0] [L727] 0 int y$w_buff1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0] [L728] 0 _Bool y$w_buff1_used; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L729] 0 _Bool weak$$choice0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L730] 0 _Bool weak$$choice2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L790] 0 pthread_t t2477; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L791] FCALL, FORK 0 pthread_create(&t2477, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L734] 1 y$w_buff1 = y$w_buff0 [L735] 1 y$w_buff0 = 2 [L736] 1 y$w_buff1_used = y$w_buff0_used [L737] 1 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 1 !(!expression) [L739] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L740] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L741] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L742] 1 y$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L745] 1 x = 1 VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L792] 0 pthread_t t2478; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L793] FCALL, FORK 0 pthread_create(&t2478, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L762] 2 x = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L765] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0] [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L768] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L768] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L769] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L769] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L770] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L770] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L771] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L771] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L772] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L772] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L748] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L748] 1 y = y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L749] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L749] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L750] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L750] 1 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L751] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L751] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L752] EXPR 1 y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L752] 1 y$r_buff1_thd1 = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 [L755] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L795] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L3] COND FALSE 0 !(!cond) VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L799] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L799] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L799] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L799] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L800] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L800] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L801] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L801] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L802] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L802] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L803] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L803] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L806] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L807] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L808] 0 y$flush_delayed = weak$$choice2 [L809] 0 y$mem_tmp = y [L810] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L810] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L811] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L811] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L812] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L812] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L813] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L813] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L814] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L814] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L815] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L815] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L816] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L816] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] 0 main$tmp_guard1 = !(x == 2 && y == 2) [L818] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L818] 0 y = y$flush_delayed ? y$mem_tmp : y [L819] 0 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L18] COND TRUE 0 !expression VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L18] 0 reach_error() VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 5935.9ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 3403.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 64.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 122 SDtfs, 390 SDslu, 433 SDs, 0 SdLazy, 788 SolverSat, 188 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 843.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 1925.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=434occurred in iteration=8, InterpolantAutomatonStates: 131, 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: 45.3ms SsaConstructionTime, 493.6ms SatisfiabilityAnalysisTime, 1619.9ms InterpolantComputationTime, 638 NumberOfCodeBlocks, 638 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 567 ConstructedInterpolants, 0 QuantifiedInterpolants, 3080 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...