/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/sync01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 18:26:10,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 18:26:10,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 18:26:10,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 18:26:10,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 18:26:10,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 18:26:10,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 18:26:10,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 18:26:10,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 18:26:10,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 18:26:11,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 18:26:11,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 18:26:11,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 18:26:11,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 18:26:11,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 18:26:11,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 18:26:11,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 18:26:11,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 18:26:11,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 18:26:11,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 18:26:11,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 18:26:11,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 18:26:11,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 18:26:11,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 18:26:11,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 18:26:11,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 18:26:11,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 18:26:11,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 18:26:11,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 18:26:11,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 18:26:11,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 18:26:11,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 18:26:11,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 18:26:11,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 18:26:11,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 18:26:11,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 18:26:11,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-24 18:26:11,050 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 18:26:11,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 18:26:11,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 18:26:11,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 18:26:11,052 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 18:26:11,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 18:26:11,052 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 18:26:11,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 18:26:11,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 18:26:11,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 18:26:11,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 18:26:11,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 18:26:11,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 18:26:11,053 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 18:26:11,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 18:26:11,054 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 18:26:11,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 18:26:11,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 18:26:11,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 18:26:11,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 18:26:11,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 18:26:11,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 18:26:11,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 18:26:11,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 18:26:11,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 18:26:11,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 18:26:11,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 18:26:11,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 18:26:11,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 18:26:11,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 18:26:11,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 18:26:11,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 18:26:11,360 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 18:26:11,361 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 18:26:11,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sync01.i [2021-03-24 18:26:11,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea14731f6/454da647c0a84527a98b69ba6b44f296/FLAG9ccd0d03d [2021-03-24 18:26:11,870 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 18:26:11,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i [2021-03-24 18:26:11,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea14731f6/454da647c0a84527a98b69ba6b44f296/FLAG9ccd0d03d [2021-03-24 18:26:11,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea14731f6/454da647c0a84527a98b69ba6b44f296 [2021-03-24 18:26:11,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 18:26:11,901 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 18:26:11,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 18:26:11,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 18:26:11,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 18:26:11,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 06:26:11" (1/1) ... [2021-03-24 18:26:11,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ed48a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:26:11, skipping insertion in model container [2021-03-24 18:26:11,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 06:26:11" (1/1) ... [2021-03-24 18:26:11,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 18:26:11,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 18:26:12,378 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/sync01.i[42004,42017] [2021-03-24 18:26:12,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 18:26:12,392 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 18:26:12,437 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/sync01.i[42004,42017] [2021-03-24 18:26:12,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 18:26:12,572 INFO L208 MainTranslator]: Completed translation [2021-03-24 18:26:12,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:26:12 WrapperNode [2021-03-24 18:26:12,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 18:26:12,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 18:26:12,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 18:26:12,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 18:26:12,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:26:12" (1/1) ... [2021-03-24 18:26:12,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:26:12" (1/1) ... [2021-03-24 18:26:12,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 18:26:12,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 18:26:12,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 18:26:12,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 18:26:12,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:26:12" (1/1) ... [2021-03-24 18:26:12,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:26:12" (1/1) ... [2021-03-24 18:26:12,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:26:12" (1/1) ... [2021-03-24 18:26:12,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:26:12" (1/1) ... [2021-03-24 18:26:12,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:26:12" (1/1) ... [2021-03-24 18:26:12,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:26:12" (1/1) ... [2021-03-24 18:26:12,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:26:12" (1/1) ... [2021-03-24 18:26:12,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 18:26:12,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 18:26:12,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 18:26:12,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 18:26:12,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:26:12" (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 18:26:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 18:26:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 18:26:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-24 18:26:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-24 18:26:12,720 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-24 18:26:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-24 18:26:12,721 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-24 18:26:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 18:26:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-24 18:26:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 18:26:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 18:26:12,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 18:26:12,723 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 18:26:13,162 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 18:26:13,162 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-24 18:26:13,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 06:26:13 BoogieIcfgContainer [2021-03-24 18:26:13,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 18:26:13,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 18:26:13,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 18:26:13,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 18:26:13,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 06:26:11" (1/3) ... [2021-03-24 18:26:13,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdece9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 06:26:13, skipping insertion in model container [2021-03-24 18:26:13,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:26:12" (2/3) ... [2021-03-24 18:26:13,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdece9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 06:26:13, skipping insertion in model container [2021-03-24 18:26:13,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 06:26:13" (3/3) ... [2021-03-24 18:26:13,171 INFO L111 eAbstractionObserver]: Analyzing ICFG sync01.i [2021-03-24 18:26:13,176 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 18:26:13,179 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 18:26:13,180 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 18:26:13,212 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,213 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,213 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,213 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,213 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,213 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,213 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,213 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,214 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,214 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,214 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,214 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,214 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,214 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,214 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,215 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,215 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,216 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,216 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,216 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,216 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,218 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,219 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,219 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,219 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,219 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,220 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,220 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,220 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,221 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,221 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,221 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,221 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,221 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,221 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,221 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,221 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,222 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,222 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,222 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,222 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,224 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,224 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,224 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,224 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,227 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,228 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,228 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,228 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,228 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,228 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,228 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,233 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,233 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,233 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,233 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,233 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,234 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,234 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:26:13,240 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-24 18:26:13,255 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-24 18:26:13,279 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 18:26:13,279 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 18:26:13,279 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 18:26:13,279 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 18:26:13,280 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 18:26:13,280 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 18:26:13,280 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 18:26:13,280 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 18:26:13,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 214 flow [2021-03-24 18:26:13,323 INFO L129 PetriNetUnfolder]: 6/96 cut-off events. [2021-03-24 18:26:13,323 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 18:26:13,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 96 events. 6/96 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 59. Up to 3 conditions per place. [2021-03-24 18:26:13,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 96 transitions, 214 flow [2021-03-24 18:26:13,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 84 transitions, 186 flow [2021-03-24 18:26:13,331 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 18:26:13,340 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 84 transitions, 186 flow [2021-03-24 18:26:13,342 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 84 transitions, 186 flow [2021-03-24 18:26:13,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 84 transitions, 186 flow [2021-03-24 18:26:13,361 INFO L129 PetriNetUnfolder]: 5/86 cut-off events. [2021-03-24 18:26:13,361 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 18:26:13,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 86 events. 5/86 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 59. Up to 3 conditions per place. [2021-03-24 18:26:13,363 INFO L142 LiptonReduction]: Number of co-enabled transitions 840 [2021-03-24 18:26:15,488 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-03-24 18:26:15,924 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2021-03-24 18:26:16,249 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2021-03-24 18:26:16,362 INFO L154 LiptonReduction]: Checked pairs total: 1470 [2021-03-24 18:26:16,362 INFO L156 LiptonReduction]: Total number of compositions: 53 [2021-03-24 18:26:16,364 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3034 [2021-03-24 18:26:16,374 INFO L129 PetriNetUnfolder]: 5/35 cut-off events. [2021-03-24 18:26:16,374 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 18:26:16,374 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 18:26:16,375 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 18:26:16,375 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 18:26:16,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 18:26:16,379 INFO L82 PathProgramCache]: Analyzing trace with hash 333703856, now seen corresponding path program 1 times [2021-03-24 18:26:16,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 18:26:16,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127270507] [2021-03-24 18:26:16,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 18:26:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 18:26:16,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:26:16,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:26:16,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:26:16,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:26:16,535 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 18:26:16,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127270507] [2021-03-24 18:26:16,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 18:26:16,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 18:26:16,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282005986] [2021-03-24 18:26:16,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-24 18:26:16,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 18:26:16,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-24 18:26:16,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-24 18:26:16,556 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 149 [2021-03-24 18:26:16,560 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 142.0) internal successors, (284), 2 states have internal predecessors, (284), 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 18:26:16,560 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 18:26:16,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 149 [2021-03-24 18:26:16,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 18:26:16,578 INFO L129 PetriNetUnfolder]: 3/34 cut-off events. [2021-03-24 18:26:16,579 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 18:26:16,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 34 events. 3/34 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 2/34 useless extension candidates. Maximal degree in co-relation 42. Up to 3 conditions per place. [2021-03-24 18:26:16,580 INFO L132 encePairwiseOnDemand]: 147/149 looper letters, 0 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2021-03-24 18:26:16,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 84 flow [2021-03-24 18:26:16,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-24 18:26:16,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-24 18:26:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 284 transitions. [2021-03-24 18:26:16,595 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9530201342281879 [2021-03-24 18:26:16,596 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 284 transitions. [2021-03-24 18:26:16,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 284 transitions. [2021-03-24 18:26:16,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 18:26:16,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 284 transitions. [2021-03-24 18:26:16,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 142.0) internal successors, (284), 2 states have internal predecessors, (284), 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 18:26:16,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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 18:26:16,612 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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 18:26:16,613 INFO L185 Difference]: Start difference. First operand has 36 places, 35 transitions, 88 flow. Second operand 2 states and 284 transitions. [2021-03-24 18:26:16,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 84 flow [2021-03-24 18:26:16,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 18:26:16,617 INFO L241 Difference]: Finished difference. Result has 33 places, 33 transitions, 72 flow [2021-03-24 18:26:16,618 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2021-03-24 18:26:16,619 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2021-03-24 18:26:16,619 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 72 flow [2021-03-24 18:26:16,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 142.0) internal successors, (284), 2 states have internal predecessors, (284), 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 18:26:16,620 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 18:26:16,620 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 18:26:16,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 18:26:16,620 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 18:26:16,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 18:26:16,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1304102553, now seen corresponding path program 1 times [2021-03-24 18:26:16,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 18:26:16,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435856947] [2021-03-24 18:26:16,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 18:26:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 18:26:16,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:26:16,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:26:16,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:26:16,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 18:26:16,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:26:16,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 18:26:16,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:26:16,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 18:26:16,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:26:16,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 18:26:16,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:26:16,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 18:26:16,828 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-24 18:26:16,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 18:26:16,832 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 18:26:16,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435856947] [2021-03-24 18:26:16,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 18:26:16,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 18:26:16,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111545194] [2021-03-24 18:26:16,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 18:26:16,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 18:26:16,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 18:26:16,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-24 18:26:16,840 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 149 [2021-03-24 18:26:16,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 72 flow. Second operand has 7 states, 7 states have (on average 114.57142857142857) internal successors, (802), 7 states have internal predecessors, (802), 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 18:26:16,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 18:26:16,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 149 [2021-03-24 18:26:16,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 18:26:16,920 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-24 18:26:16,920 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 18:26:16,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 43 events. 5/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 2 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 64. Up to 10 conditions per place. [2021-03-24 18:26:16,921 INFO L132 encePairwiseOnDemand]: 139/149 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2021-03-24 18:26:16,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 90 flow [2021-03-24 18:26:16,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 18:26:16,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 18:26:16,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 695 transitions. [2021-03-24 18:26:16,924 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7774049217002237 [2021-03-24 18:26:16,924 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 695 transitions. [2021-03-24 18:26:16,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 695 transitions. [2021-03-24 18:26:16,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 18:26:16,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 695 transitions. [2021-03-24 18:26:16,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 18:26:16,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 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 18:26:16,930 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 149.0) internal successors, (1043), 7 states have internal predecessors, (1043), 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 18:26:16,930 INFO L185 Difference]: Start difference. First operand has 33 places, 33 transitions, 72 flow. Second operand 6 states and 695 transitions. [2021-03-24 18:26:16,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 90 flow [2021-03-24 18:26:16,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 90 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 18:26:16,932 INFO L241 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2021-03-24 18:26:16,932 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2021-03-24 18:26:16,933 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2021-03-24 18:26:16,933 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2021-03-24 18:26:16,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 114.57142857142857) internal successors, (802), 7 states have internal predecessors, (802), 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 18:26:16,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 18:26:16,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 06:26:16 BasicIcfg [2021-03-24 18:26:16,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 18:26:16,938 INFO L168 Benchmark]: Toolchain (without parser) took 5036.21 ms. Allocated memory was 255.9 MB in the beginning and 448.8 MB in the end (delta: 192.9 MB). Free memory was 234.7 MB in the beginning and 292.6 MB in the end (delta: -57.9 MB). Peak memory consumption was 134.7 MB. Max. memory is 16.0 GB. [2021-03-24 18:26:16,938 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 18:26:16,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.43 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 234.7 MB in the beginning and 312.5 MB in the end (delta: -77.8 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.0 GB. [2021-03-24 18:26:16,940 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.01 ms. Allocated memory is still 373.3 MB. Free memory was 312.5 MB in the beginning and 310.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 18:26:16,944 INFO L168 Benchmark]: Boogie Preprocessor took 27.14 ms. Allocated memory is still 373.3 MB. Free memory was 310.4 MB in the beginning and 309.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 18:26:16,944 INFO L168 Benchmark]: RCFGBuilder took 502.00 ms. Allocated memory is still 373.3 MB. Free memory was 309.0 MB in the beginning and 342.9 MB in the end (delta: -33.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-03-24 18:26:16,945 INFO L168 Benchmark]: TraceAbstraction took 3770.34 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 342.9 MB in the beginning and 292.6 MB in the end (delta: 50.3 MB). Peak memory consumption was 125.8 MB. Max. memory is 16.0 GB. [2021-03-24 18:26:16,950 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 673.43 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 234.7 MB in the beginning and 312.5 MB in the end (delta: -77.8 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 58.01 ms. Allocated memory is still 373.3 MB. Free memory was 312.5 MB in the beginning and 310.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.14 ms. Allocated memory is still 373.3 MB. Free memory was 310.4 MB in the beginning and 309.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 502.00 ms. Allocated memory is still 373.3 MB. Free memory was 309.0 MB in the beginning and 342.9 MB in the end (delta: -33.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3770.34 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 342.9 MB in the beginning and 292.6 MB in the end (delta: 50.3 MB). Peak memory consumption was 125.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3020.2ms, 85 PlacesBefore, 36 PlacesAfterwards, 84 TransitionsBefore, 35 TransitionsAfterwards, 840 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 53 TotalNumberOfCompositions, 1470 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 819, positive: 746, positive conditional: 0, positive unconditional: 746, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 462, positive: 438, positive conditional: 0, positive unconditional: 438, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 462, positive: 438, positive conditional: 0, positive unconditional: 438, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 462, positive: 428, positive conditional: 0, positive unconditional: 428, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 34, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 96, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 819, positive: 308, positive conditional: 0, positive unconditional: 308, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 462, unknown conditional: 0, unknown unconditional: 462] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - PositiveResult [Line: 966]: 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, 90 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3659.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 165.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3088.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 9 SDslu, 8 SDs, 0 SdLazy, 33 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 41.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=0, InterpolantAutomatonStates: 8, 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: 7.5ms SsaConstructionTime, 81.2ms SatisfiabilityAnalysisTime, 195.8ms InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 92 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...