/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 11:02:15,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 11:02:15,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 11:02:15,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 11:02:15,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 11:02:15,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 11:02:15,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 11:02:15,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 11:02:15,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 11:02:15,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 11:02:15,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 11:02:15,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 11:02:15,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 11:02:15,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 11:02:15,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 11:02:15,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 11:02:15,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 11:02:15,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 11:02:15,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 11:02:15,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 11:02:15,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 11:02:15,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 11:02:15,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 11:02:15,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 11:02:15,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 11:02:15,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 11:02:15,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 11:02:15,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 11:02:15,957 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-VariableLbe.epf [2021-03-24 11:02:15,991 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 11:02:15,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 11:02:15,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 11:02:15,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 11:02:15,994 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 11:02:15,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 11:02:15,995 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 11:02:15,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 11:02:15,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 11:02:15,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 11:02:15,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 11:02:15,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 11:02:15,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 11:02:15,996 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 11:02:15,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 11:02:15,996 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 11:02:15,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 11:02:15,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 11:02:15,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 11:02:15,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 11:02:15,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 11:02:15,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:02:15,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 11:02:15,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 11:02:15,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 11:02:15,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 11:02:15,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 11:02:15,998 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 11:02:15,998 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 11:02:15,998 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 11:02:16,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 11:02:16,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 11:02:16,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 11:02:16,319 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 11:02:16,320 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 11:02:16,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i [2021-03-24 11:02:16,370 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce804b6d0/ce4e2c8bef3645debf6ddf04ea87d4c0/FLAG0ec053ad8 [2021-03-24 11:02:16,858 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 11:02:16,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.opt.i [2021-03-24 11:02:16,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce804b6d0/ce4e2c8bef3645debf6ddf04ea87d4c0/FLAG0ec053ad8 [2021-03-24 11:02:17,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce804b6d0/ce4e2c8bef3645debf6ddf04ea87d4c0 [2021-03-24 11:02:17,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 11:02:17,346 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 11:02:17,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 11:02:17,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 11:02:17,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 11:02:17,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:02:17" (1/1) ... [2021-03-24 11:02:17,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37da303a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:02:17, skipping insertion in model container [2021-03-24 11:02:17,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:02:17" (1/1) ... [2021-03-24 11:02:17,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 11:02:17,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 11:02:17,572 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/safe010_tso.opt.i[949,962] [2021-03-24 11:02:17,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:02:17,679 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 11:02:17,688 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/safe010_tso.opt.i[949,962] [2021-03-24 11:02:17,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:02:17,763 INFO L208 MainTranslator]: Completed translation [2021-03-24 11:02:17,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:02:17 WrapperNode [2021-03-24 11:02:17,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 11:02:17,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 11:02:17,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 11:02:17,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 11:02:17,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:02:17" (1/1) ... [2021-03-24 11:02:17,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:02:17" (1/1) ... [2021-03-24 11:02:17,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 11:02:17,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 11:02:17,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 11:02:17,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 11:02:17,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:02:17" (1/1) ... [2021-03-24 11:02:17,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:02:17" (1/1) ... [2021-03-24 11:02:17,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:02:17" (1/1) ... [2021-03-24 11:02:17,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:02:17" (1/1) ... [2021-03-24 11:02:17,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:02:17" (1/1) ... [2021-03-24 11:02:17,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:02:17" (1/1) ... [2021-03-24 11:02:17,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:02:17" (1/1) ... [2021-03-24 11:02:17,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 11:02:17,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 11:02:17,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 11:02:17,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 11:02:17,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:02:17" (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 [2021-03-24 11:02:17,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 11:02:17,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 11:02:17,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 11:02:17,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 11:02:17,880 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 11:02:17,880 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 11:02:17,880 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 11:02:17,881 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 11:02:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 11:02:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 11:02:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 11:02:17,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 11:02:17,883 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 11:02:18,265 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 11:02:18,266 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 11:02:18,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:02:18 BoogieIcfgContainer [2021-03-24 11:02:18,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 11:02:18,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 11:02:18,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 11:02:18,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 11:02:18,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 11:02:17" (1/3) ... [2021-03-24 11:02:18,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b6de90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:02:18, skipping insertion in model container [2021-03-24 11:02:18,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:02:17" (2/3) ... [2021-03-24 11:02:18,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b6de90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:02:18, skipping insertion in model container [2021-03-24 11:02:18,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:02:18" (3/3) ... [2021-03-24 11:02:18,273 INFO L111 eAbstractionObserver]: Analyzing ICFG safe010_tso.opt.i [2021-03-24 11:02:18,277 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 11:02:18,281 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 11:02:18,282 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 11:02:18,309 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,310 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,310 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,310 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,311 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,311 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,311 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,311 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,312 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,313 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,313 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,313 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,314 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,314 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,314 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,314 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,314 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,315 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,315 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,316 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,316 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,318 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,318 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,319 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,319 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,324 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,324 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,324 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,324 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:02:18,329 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 11:02:18,343 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-24 11:02:18,363 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 11:02:18,363 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 11:02:18,363 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 11:02:18,364 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 11:02:18,364 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 11:02:18,364 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 11:02:18,364 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 11:02:18,364 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 11:02:18,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 60 transitions, 130 flow [2021-03-24 11:02:18,421 INFO L129 PetriNetUnfolder]: 2/58 cut-off events. [2021-03-24 11:02:18,421 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:02:18,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 58 events. 2/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-24 11:02:18,424 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 60 transitions, 130 flow [2021-03-24 11:02:18,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 48 transitions, 102 flow [2021-03-24 11:02:18,428 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 11:02:18,436 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 48 transitions, 102 flow [2021-03-24 11:02:18,438 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 48 transitions, 102 flow [2021-03-24 11:02:18,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 48 transitions, 102 flow [2021-03-24 11:02:18,450 INFO L129 PetriNetUnfolder]: 1/48 cut-off events. [2021-03-24 11:02:18,451 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:02:18,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 48 events. 1/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-03-24 11:02:18,453 INFO L142 LiptonReduction]: Number of co-enabled transitions 456 [2021-03-24 11:02:19,754 INFO L154 LiptonReduction]: Checked pairs total: 490 [2021-03-24 11:02:19,754 INFO L156 LiptonReduction]: Total number of compositions: 32 [2021-03-24 11:02:19,757 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1330 [2021-03-24 11:02:19,772 INFO L129 PetriNetUnfolder]: 1/18 cut-off events. [2021-03-24 11:02:19,772 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:02:19,773 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:02:19,773 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:02:19,773 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:02:19,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:02:19,781 INFO L82 PathProgramCache]: Analyzing trace with hash 451168722, now seen corresponding path program 1 times [2021-03-24 11:02:19,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:02:19,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339114985] [2021-03-24 11:02:19,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:02:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:02:19,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:19,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:02:19,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:19,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:02:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:02:19,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339114985] [2021-03-24 11:02:19,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:02:19,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 11:02:19,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892531518] [2021-03-24 11:02:19,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-24 11:02:19,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:02:19,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-24 11:02:19,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-24 11:02:19,935 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 92 [2021-03-24 11:02:19,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 19 transitions, 44 flow. Second operand has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 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) [2021-03-24 11:02:19,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:02:19,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 92 [2021-03-24 11:02:19,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:02:19,944 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-24 11:02:19,944 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:02:19,944 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-24 11:02:19,945 INFO L132 encePairwiseOnDemand]: 91/92 looper letters, 0 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2021-03-24 11:02:19,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 17 transitions, 40 flow [2021-03-24 11:02:19,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-24 11:02:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-24 11:02:19,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 175 transitions. [2021-03-24 11:02:19,954 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9510869565217391 [2021-03-24 11:02:19,955 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 175 transitions. [2021-03-24 11:02:19,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 175 transitions. [2021-03-24 11:02:19,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:02:19,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 175 transitions. [2021-03-24 11:02:19,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 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) [2021-03-24 11:02:19,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2021-03-24 11:02:19,964 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2021-03-24 11:02:19,965 INFO L185 Difference]: Start difference. First operand has 25 places, 19 transitions, 44 flow. Second operand 2 states and 175 transitions. [2021-03-24 11:02:19,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 17 transitions, 40 flow [2021-03-24 11:02:19,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 17 transitions, 38 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:02:19,969 INFO L241 Difference]: Finished difference. Result has 23 places, 17 transitions, 38 flow [2021-03-24 11:02:19,970 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2021-03-24 11:02:19,971 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2021-03-24 11:02:19,971 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 38 flow [2021-03-24 11:02:19,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 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) [2021-03-24 11:02:19,971 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:02:19,971 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:02:19,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 11:02:19,972 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:02:19,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:02:19,972 INFO L82 PathProgramCache]: Analyzing trace with hash 451165808, now seen corresponding path program 1 times [2021-03-24 11:02:19,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:02:19,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415949098] [2021-03-24 11:02:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:02:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:02:20,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:02:20,058 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-24 11:02:20,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:02:20,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:02:20,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:02:20,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415949098] [2021-03-24 11:02:20,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:02:20,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:02:20,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900666713] [2021-03-24 11:02:20,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:02:20,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:02:20,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:02:20,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:02:20,073 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 92 [2021-03-24 11:02:20,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 38 flow. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2021-03-24 11:02:20,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:02:20,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 92 [2021-03-24 11:02:20,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:02:20,107 INFO L129 PetriNetUnfolder]: 12/64 cut-off events. [2021-03-24 11:02:20,107 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:02:20,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 64 events. 12/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 225 event pairs, 4 based on Foata normal form. 7/68 useless extension candidates. Maximal degree in co-relation 107. Up to 20 conditions per place. [2021-03-24 11:02:20,108 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 6 selfloop transitions, 4 changer transitions 6/26 dead transitions. [2021-03-24 11:02:20,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 26 transitions, 88 flow [2021-03-24 11:02:20,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:02:20,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:02:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 353 transitions. [2021-03-24 11:02:20,111 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7673913043478261 [2021-03-24 11:02:20,111 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 353 transitions. [2021-03-24 11:02:20,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 353 transitions. [2021-03-24 11:02:20,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:02:20,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 353 transitions. [2021-03-24 11:02:20,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 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) [2021-03-24 11:02:20,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 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) [2021-03-24 11:02:20,116 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 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) [2021-03-24 11:02:20,116 INFO L185 Difference]: Start difference. First operand has 23 places, 17 transitions, 38 flow. Second operand 5 states and 353 transitions. [2021-03-24 11:02:20,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 26 transitions, 88 flow [2021-03-24 11:02:20,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 26 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 11:02:20,118 INFO L241 Difference]: Finished difference. Result has 30 places, 19 transitions, 68 flow [2021-03-24 11:02:20,118 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2021-03-24 11:02:20,118 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2021-03-24 11:02:20,119 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 68 flow [2021-03-24 11:02:20,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2021-03-24 11:02:20,119 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:02:20,119 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:02:20,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 11:02:20,119 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:02:20,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:02:20,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1101218420, now seen corresponding path program 1 times [2021-03-24 11:02:20,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:02:20,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50432742] [2021-03-24 11:02:20,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:02:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:02:20,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:02:20,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:02:20,169 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-24 11:02:20,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:02:20,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:02:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:02:20,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50432742] [2021-03-24 11:02:20,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:02:20,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:02:20,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030858736] [2021-03-24 11:02:20,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:02:20,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:02:20,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:02:20,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:02:20,181 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 92 [2021-03-24 11:02:20,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 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) [2021-03-24 11:02:20,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:02:20,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 92 [2021-03-24 11:02:20,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:02:20,220 INFO L129 PetriNetUnfolder]: 7/48 cut-off events. [2021-03-24 11:02:20,220 INFO L130 PetriNetUnfolder]: For 39/53 co-relation queries the response was YES. [2021-03-24 11:02:20,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 48 events. 7/48 cut-off events. For 39/53 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 131 event pairs, 2 based on Foata normal form. 4/51 useless extension candidates. Maximal degree in co-relation 122. Up to 15 conditions per place. [2021-03-24 11:02:20,221 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 6 selfloop transitions, 5 changer transitions 3/24 dead transitions. [2021-03-24 11:02:20,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 24 transitions, 122 flow [2021-03-24 11:02:20,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:02:20,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:02:20,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 485 transitions. [2021-03-24 11:02:20,225 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7531055900621118 [2021-03-24 11:02:20,225 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 485 transitions. [2021-03-24 11:02:20,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 485 transitions. [2021-03-24 11:02:20,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:02:20,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 485 transitions. [2021-03-24 11:02:20,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 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) [2021-03-24 11:02:20,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2021-03-24 11:02:20,232 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2021-03-24 11:02:20,232 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 68 flow. Second operand 7 states and 485 transitions. [2021-03-24 11:02:20,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 24 transitions, 122 flow [2021-03-24 11:02:20,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 108 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-24 11:02:20,235 INFO L241 Difference]: Finished difference. Result has 37 places, 20 transitions, 89 flow [2021-03-24 11:02:20,235 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=89, PETRI_PLACES=37, PETRI_TRANSITIONS=20} [2021-03-24 11:02:20,235 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 12 predicate places. [2021-03-24 11:02:20,235 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 20 transitions, 89 flow [2021-03-24 11:02:20,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 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) [2021-03-24 11:02:20,236 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:02:20,236 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:02:20,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 11:02:20,236 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:02:20,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:02:20,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1084843941, now seen corresponding path program 1 times [2021-03-24 11:02:20,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:02:20,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410377128] [2021-03-24 11:02:20,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:02:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:02:20,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:02:20,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:02:20,294 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-24 11:02:20,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:02:20,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:02:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:02:20,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410377128] [2021-03-24 11:02:20,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:02:20,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:02:20,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799616136] [2021-03-24 11:02:20,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:02:20,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:02:20,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:02:20,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:02:20,306 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 92 [2021-03-24 11:02:20,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 20 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 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) [2021-03-24 11:02:20,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:02:20,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 92 [2021-03-24 11:02:20,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:02:20,364 INFO L129 PetriNetUnfolder]: 16/76 cut-off events. [2021-03-24 11:02:20,364 INFO L130 PetriNetUnfolder]: For 213/232 co-relation queries the response was YES. [2021-03-24 11:02:20,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 76 events. 16/76 cut-off events. For 213/232 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 291 event pairs, 0 based on Foata normal form. 14/89 useless extension candidates. Maximal degree in co-relation 221. Up to 16 conditions per place. [2021-03-24 11:02:20,365 INFO L132 encePairwiseOnDemand]: 84/92 looper letters, 9 selfloop transitions, 9 changer transitions 12/39 dead transitions. [2021-03-24 11:02:20,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 272 flow [2021-03-24 11:02:20,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 11:02:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 11:02:20,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 616 transitions. [2021-03-24 11:02:20,367 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7439613526570048 [2021-03-24 11:02:20,368 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 616 transitions. [2021-03-24 11:02:20,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 616 transitions. [2021-03-24 11:02:20,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:02:20,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 616 transitions. [2021-03-24 11:02:20,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.44444444444444) internal successors, (616), 9 states have internal predecessors, (616), 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) [2021-03-24 11:02:20,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2021-03-24 11:02:20,372 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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) [2021-03-24 11:02:20,372 INFO L185 Difference]: Start difference. First operand has 37 places, 20 transitions, 89 flow. Second operand 9 states and 616 transitions. [2021-03-24 11:02:20,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 272 flow [2021-03-24 11:02:20,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 39 transitions, 226 flow, removed 14 selfloop flow, removed 5 redundant places. [2021-03-24 11:02:20,374 INFO L241 Difference]: Finished difference. Result has 44 places, 23 transitions, 136 flow [2021-03-24 11:02:20,374 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=136, PETRI_PLACES=44, PETRI_TRANSITIONS=23} [2021-03-24 11:02:20,375 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 19 predicate places. [2021-03-24 11:02:20,375 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 23 transitions, 136 flow [2021-03-24 11:02:20,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 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) [2021-03-24 11:02:20,375 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:02:20,375 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:02:20,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 11:02:20,376 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:02:20,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:02:20,376 INFO L82 PathProgramCache]: Analyzing trace with hash -746893937, now seen corresponding path program 1 times [2021-03-24 11:02:20,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:02:20,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762762071] [2021-03-24 11:02:20,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:02:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:02:20,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:02:20,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:02:20,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:02:20,419 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-24 11:02:20,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:02:20,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:02:20,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:02:20,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762762071] [2021-03-24 11:02:20,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:02:20,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:02:20,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371201765] [2021-03-24 11:02:20,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 11:02:20,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:02:20,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 11:02:20,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 11:02:20,433 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 92 [2021-03-24 11:02:20,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 23 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 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) [2021-03-24 11:02:20,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:02:20,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 92 [2021-03-24 11:02:20,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:02:20,470 INFO L129 PetriNetUnfolder]: 5/47 cut-off events. [2021-03-24 11:02:20,470 INFO L130 PetriNetUnfolder]: For 197/219 co-relation queries the response was YES. [2021-03-24 11:02:20,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 47 events. 5/47 cut-off events. For 197/219 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 146 event pairs, 0 based on Foata normal form. 8/55 useless extension candidates. Maximal degree in co-relation 170. Up to 11 conditions per place. [2021-03-24 11:02:20,471 INFO L132 encePairwiseOnDemand]: 85/92 looper letters, 4 selfloop transitions, 5 changer transitions 13/31 dead transitions. [2021-03-24 11:02:20,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 31 transitions, 251 flow [2021-03-24 11:02:20,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:02:20,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:02:20,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 474 transitions. [2021-03-24 11:02:20,473 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7360248447204969 [2021-03-24 11:02:20,473 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 474 transitions. [2021-03-24 11:02:20,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 474 transitions. [2021-03-24 11:02:20,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:02:20,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 474 transitions. [2021-03-24 11:02:20,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.71428571428571) internal successors, (474), 7 states have internal predecessors, (474), 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) [2021-03-24 11:02:20,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2021-03-24 11:02:20,476 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2021-03-24 11:02:20,476 INFO L185 Difference]: Start difference. First operand has 44 places, 23 transitions, 136 flow. Second operand 7 states and 474 transitions. [2021-03-24 11:02:20,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 31 transitions, 251 flow [2021-03-24 11:02:20,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 31 transitions, 211 flow, removed 13 selfloop flow, removed 7 redundant places. [2021-03-24 11:02:20,478 INFO L241 Difference]: Finished difference. Result has 43 places, 17 transitions, 95 flow [2021-03-24 11:02:20,478 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=95, PETRI_PLACES=43, PETRI_TRANSITIONS=17} [2021-03-24 11:02:20,479 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 18 predicate places. [2021-03-24 11:02:20,479 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 17 transitions, 95 flow [2021-03-24 11:02:20,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 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) [2021-03-24 11:02:20,479 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:02:20,479 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:02:20,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 11:02:20,480 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:02:20,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:02:20,480 INFO L82 PathProgramCache]: Analyzing trace with hash -843761779, now seen corresponding path program 1 times [2021-03-24 11:02:20,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:02:20,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295558896] [2021-03-24 11:02:20,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:02:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:02:20,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:02:20,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:02:20,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:02:20,522 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 11:02:20,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:02:20,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:02:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:02:20,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295558896] [2021-03-24 11:02:20,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:02:20,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:02:20,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460597808] [2021-03-24 11:02:20,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:02:20,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:02:20,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:02:20,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:02:20,534 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2021-03-24 11:02:20,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 17 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 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) [2021-03-24 11:02:20,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:02:20,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2021-03-24 11:02:20,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:02:20,594 INFO L129 PetriNetUnfolder]: 10/42 cut-off events. [2021-03-24 11:02:20,594 INFO L130 PetriNetUnfolder]: For 58/63 co-relation queries the response was YES. [2021-03-24 11:02:20,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 42 events. 10/42 cut-off events. For 58/63 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 97 event pairs, 2 based on Foata normal form. 5/46 useless extension candidates. Maximal degree in co-relation 107. Up to 17 conditions per place. [2021-03-24 11:02:20,594 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 4 selfloop transitions, 2 changer transitions 13/30 dead transitions. [2021-03-24 11:02:20,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 30 transitions, 159 flow [2021-03-24 11:02:20,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:02:20,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:02:20,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 497 transitions. [2021-03-24 11:02:20,597 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7717391304347826 [2021-03-24 11:02:20,597 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 497 transitions. [2021-03-24 11:02:20,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 497 transitions. [2021-03-24 11:02:20,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:02:20,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 497 transitions. [2021-03-24 11:02:20,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.0) internal successors, (497), 7 states have internal predecessors, (497), 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) [2021-03-24 11:02:20,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2021-03-24 11:02:20,600 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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) [2021-03-24 11:02:20,600 INFO L185 Difference]: Start difference. First operand has 43 places, 17 transitions, 95 flow. Second operand 7 states and 497 transitions. [2021-03-24 11:02:20,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 30 transitions, 159 flow [2021-03-24 11:02:20,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 119 flow, removed 7 selfloop flow, removed 13 redundant places. [2021-03-24 11:02:20,602 INFO L241 Difference]: Finished difference. Result has 39 places, 17 transitions, 77 flow [2021-03-24 11:02:20,602 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=77, PETRI_PLACES=39, PETRI_TRANSITIONS=17} [2021-03-24 11:02:20,602 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 14 predicate places. [2021-03-24 11:02:20,602 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 17 transitions, 77 flow [2021-03-24 11:02:20,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 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) [2021-03-24 11:02:20,603 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:02:20,603 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:02:20,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 11:02:20,603 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:02:20,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:02:20,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1368986046, now seen corresponding path program 1 times [2021-03-24 11:02:20,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:02:20,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669287276] [2021-03-24 11:02:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:02:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:02:20,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:02:20,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:02:20,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:02:20,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 11:02:20,673 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 11:02:20,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:02:20,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:02:20,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:02:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:02:20,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669287276] [2021-03-24 11:02:20,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:02:20,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 11:02:20,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099070268] [2021-03-24 11:02:20,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 11:02:20,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:02:20,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 11:02:20,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 11:02:20,683 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2021-03-24 11:02:20,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 17 transitions, 77 flow. Second operand has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 6 states have internal predecessors, (413), 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) [2021-03-24 11:02:20,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:02:20,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2021-03-24 11:02:20,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:02:20,724 INFO L129 PetriNetUnfolder]: 1/20 cut-off events. [2021-03-24 11:02:20,724 INFO L130 PetriNetUnfolder]: For 36/38 co-relation queries the response was YES. [2021-03-24 11:02:20,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 20 events. 1/20 cut-off events. For 36/38 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 2/22 useless extension candidates. Maximal degree in co-relation 61. Up to 7 conditions per place. [2021-03-24 11:02:20,724 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2021-03-24 11:02:20,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 20 transitions, 117 flow [2021-03-24 11:02:20,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 11:02:20,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 11:02:20,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 555 transitions. [2021-03-24 11:02:20,726 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7540760869565217 [2021-03-24 11:02:20,727 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 555 transitions. [2021-03-24 11:02:20,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 555 transitions. [2021-03-24 11:02:20,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:02:20,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 555 transitions. [2021-03-24 11:02:20,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.375) internal successors, (555), 8 states have internal predecessors, (555), 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) [2021-03-24 11:02:20,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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) [2021-03-24 11:02:20,730 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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) [2021-03-24 11:02:20,730 INFO L185 Difference]: Start difference. First operand has 39 places, 17 transitions, 77 flow. Second operand 8 states and 555 transitions. [2021-03-24 11:02:20,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 20 transitions, 117 flow [2021-03-24 11:02:20,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 20 transitions, 99 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 11:02:20,731 INFO L241 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2021-03-24 11:02:20,731 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2021-03-24 11:02:20,731 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2021-03-24 11:02:20,731 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2021-03-24 11:02:20,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 6 states have internal predecessors, (413), 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) [2021-03-24 11:02:20,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 11:02:20,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 11:02:20 BasicIcfg [2021-03-24 11:02:20,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 11:02:20,736 INFO L168 Benchmark]: Toolchain (without parser) took 3389.73 ms. Allocated memory is still 333.4 MB. Free memory was 296.3 MB in the beginning and 156.0 MB in the end (delta: 140.3 MB). Peak memory consumption was 142.3 MB. Max. memory is 16.0 GB. [2021-03-24 11:02:20,736 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 333.4 MB. Free memory was 314.4 MB in the beginning and 314.3 MB in the end (delta: 65.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:02:20,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.90 ms. Allocated memory is still 333.4 MB. Free memory was 296.1 MB in the beginning and 295.1 MB in the end (delta: 977.1 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-03-24 11:02:20,737 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.40 ms. Allocated memory is still 333.4 MB. Free memory was 295.1 MB in the beginning and 294.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:02:20,737 INFO L168 Benchmark]: Boogie Preprocessor took 17.88 ms. Allocated memory is still 333.4 MB. Free memory was 294.1 MB in the beginning and 292.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:02:20,738 INFO L168 Benchmark]: RCFGBuilder took 453.09 ms. Allocated memory is still 333.4 MB. Free memory was 292.0 MB in the beginning and 272.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-03-24 11:02:20,738 INFO L168 Benchmark]: TraceAbstraction took 2466.20 ms. Allocated memory is still 333.4 MB. Free memory was 271.0 MB in the beginning and 156.0 MB in the end (delta: 115.0 MB). Peak memory consumption was 116.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:02:20,740 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 333.4 MB. Free memory was 314.4 MB in the beginning and 314.3 MB in the end (delta: 65.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 410.90 ms. Allocated memory is still 333.4 MB. Free memory was 296.1 MB in the beginning and 295.1 MB in the end (delta: 977.1 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 31.40 ms. Allocated memory is still 333.4 MB. Free memory was 295.1 MB in the beginning and 294.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.88 ms. Allocated memory is still 333.4 MB. Free memory was 294.1 MB in the beginning and 292.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 453.09 ms. Allocated memory is still 333.4 MB. Free memory was 292.0 MB in the beginning and 272.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2466.20 ms. Allocated memory is still 333.4 MB. Free memory was 271.0 MB in the beginning and 156.0 MB in the end (delta: 115.0 MB). Peak memory consumption was 116.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1315.9ms, 54 PlacesBefore, 25 PlacesAfterwards, 48 TransitionsBefore, 19 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 32 TotalNumberOfCompositions, 490 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 328, positive: 308, positive conditional: 0, positive unconditional: 308, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 224, positive: 214, positive conditional: 0, positive unconditional: 214, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 224, positive: 214, positive conditional: 0, positive unconditional: 214, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 328, positive: 94, positive conditional: 0, positive unconditional: 94, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 224, unknown conditional: 0, unknown unconditional: 224] , Statistics on independence cache: Total cache size (in pairs): 17, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 10.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2377.2ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 378.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1398.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 47 SDtfs, 58 SDslu, 60 SDs, 0 SdLazy, 108 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 166.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred in iteration=4, InterpolantAutomatonStates: 45, 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: 14.4ms SsaConstructionTime, 118.5ms SatisfiabilityAnalysisTime, 299.9ms InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 311 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...