/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-divine/condvar.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:45:31,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:45:31,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:45:31,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:45:31,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:45:31,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:45:31,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:45:31,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:45:31,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:45:31,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:45:31,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:45:31,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:45:31,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:45:31,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:45:31,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:45:31,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:45:31,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:45:31,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:45:31,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:45:31,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:45:31,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:45:31,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:45:31,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:45:31,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:45:31,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 05:45:31,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:45:31,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:45:31,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:45:31,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:45:31,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:45:31,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:45:31,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:45:31,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:45:31,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:45:31,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:45:31,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:45:31,796 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-SemanticLooper.epf [2020-10-16 05:45:31,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:45:31,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:45:31,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:45:31,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:45:31,842 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:45:31,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:45:31,843 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:45:31,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:45:31,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:45:31,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:45:31,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:45:31,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:45:31,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:45:31,844 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:45:31,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:45:31,845 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:45:31,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:45:31,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:45:31,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:45:31,847 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:45:31,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:45:31,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:45:31,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:45:31,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:45:31,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:45:31,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:45:31,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:45:31,849 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:45:31,849 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:45:32,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:45:32,188 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:45:32,191 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:45:32,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:45:32,193 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:45:32,194 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar.i [2020-10-16 05:45:32,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4848c9307/889b754421f046a1970e14c49b2500f0/FLAG6f09c9a4b [2020-10-16 05:45:32,790 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:45:32,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i [2020-10-16 05:45:32,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4848c9307/889b754421f046a1970e14c49b2500f0/FLAG6f09c9a4b [2020-10-16 05:45:33,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4848c9307/889b754421f046a1970e14c49b2500f0 [2020-10-16 05:45:33,143 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:45:33,145 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:45:33,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:45:33,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:45:33,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:45:33,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:45:33" (1/1) ... [2020-10-16 05:45:33,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fce6a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:33, skipping insertion in model container [2020-10-16 05:45:33,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:45:33" (1/1) ... [2020-10-16 05:45:33,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:45:33,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:45:33,378 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-16 05:45:33,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:45:33,667 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:45:33,684 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-10-16 05:45:33,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:45:33,813 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:45:33,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:33 WrapperNode [2020-10-16 05:45:33,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:45:33,817 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:45:33,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:45:33,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:45:33,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:33" (1/1) ... [2020-10-16 05:45:33,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:33" (1/1) ... [2020-10-16 05:45:33,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:45:33,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:45:33,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:45:33,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:45:33,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:33" (1/1) ... [2020-10-16 05:45:33,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:33" (1/1) ... [2020-10-16 05:45:33,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:33" (1/1) ... [2020-10-16 05:45:33,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:33" (1/1) ... [2020-10-16 05:45:33,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:33" (1/1) ... [2020-10-16 05:45:33,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:33" (1/1) ... [2020-10-16 05:45:33,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:33" (1/1) ... [2020-10-16 05:45:33,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:45:33,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:45:33,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:45:33,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:45:33,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:33" (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 [2020-10-16 05:45:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 05:45:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:45:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-16 05:45:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:45:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:45:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 05:45:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2020-10-16 05:45:33,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2020-10-16 05:45:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:45:33,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:45:33,994 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:45:34,333 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:45:34,333 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-16 05:45:34,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:45:34 BoogieIcfgContainer [2020-10-16 05:45:34,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:45:34,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:45:34,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:45:34,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:45:34,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:45:33" (1/3) ... [2020-10-16 05:45:34,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30809905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:45:34, skipping insertion in model container [2020-10-16 05:45:34,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:45:33" (2/3) ... [2020-10-16 05:45:34,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30809905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:45:34, skipping insertion in model container [2020-10-16 05:45:34,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:45:34" (3/3) ... [2020-10-16 05:45:34,345 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar.i [2020-10-16 05:45:34,355 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:45:34,362 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:45:34,363 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:45:34,387 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:45:34,388 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:45:34,388 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:45:34,388 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:45:34,389 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:45:34,389 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:45:34,390 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:45:34,391 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:45:34,391 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:45:34,391 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:45:34,395 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:45:34,395 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:45:34,395 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:45:34,396 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:45:34,396 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:45:34,396 WARN L313 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:45:34,423 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 05:45:34,442 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:45:34,442 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:45:34,442 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:45:34,442 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:45:34,442 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:45:34,442 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:45:34,442 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:45:34,443 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:45:34,454 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 58 places, 59 transitions, 126 flow [2020-10-16 05:45:34,497 INFO L129 PetriNetUnfolder]: 5/58 cut-off events. [2020-10-16 05:45:34,497 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-16 05:45:34,502 INFO L80 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 58 events. 5/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2020-10-16 05:45:34,502 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 59 transitions, 126 flow [2020-10-16 05:45:34,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 52 transitions, 107 flow [2020-10-16 05:45:34,511 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:45:34,514 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 52 transitions, 107 flow [2020-10-16 05:45:34,517 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 52 transitions, 107 flow [2020-10-16 05:45:34,517 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 52 transitions, 107 flow [2020-10-16 05:45:34,540 INFO L129 PetriNetUnfolder]: 5/52 cut-off events. [2020-10-16 05:45:34,540 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:45:34,541 INFO L80 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 52 events. 5/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2020-10-16 05:45:34,542 INFO L117 LiptonReduction]: Number of co-enabled transitions 352 [2020-10-16 05:45:35,838 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-16 05:45:36,200 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-10-16 05:45:36,342 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-16 05:45:36,346 INFO L132 LiptonReduction]: Checked pairs total: 291 [2020-10-16 05:45:36,346 INFO L134 LiptonReduction]: Total number of compositions: 49 [2020-10-16 05:45:36,349 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1840 [2020-10-16 05:45:36,356 INFO L129 PetriNetUnfolder]: 2/8 cut-off events. [2020-10-16 05:45:36,357 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:45:36,357 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:45:36,358 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 05:45:36,358 INFO L429 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:45:36,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:45:36,365 INFO L82 PathProgramCache]: Analyzing trace with hash 7247310, now seen corresponding path program 1 times [2020-10-16 05:45:36,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:45:36,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557653778] [2020-10-16 05:45:36,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:45:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:45:36,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:45:36,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557653778] [2020-10-16 05:45:36,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:45:36,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:45:36,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887373484] [2020-10-16 05:45:36,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:45:36,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:45:36,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:45:36,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:45:36,614 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 108 [2020-10-16 05:45:36,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 9 transitions, 21 flow. Second operand 3 states. [2020-10-16 05:45:36,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:45:36,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 108 [2020-10-16 05:45:36,618 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:45:36,663 INFO L129 PetriNetUnfolder]: 5/13 cut-off events. [2020-10-16 05:45:36,664 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:45:36,664 INFO L80 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 13 events. 5/13 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 19. Up to 8 conditions per place. [2020-10-16 05:45:36,666 INFO L132 encePairwiseOnDemand]: 104/108 looper letters, 3 selfloop transitions, 2 changer transitions 1/10 dead transitions. [2020-10-16 05:45:36,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 10 transitions, 35 flow [2020-10-16 05:45:36,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:45:36,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:45:36,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2020-10-16 05:45:36,683 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7839506172839507 [2020-10-16 05:45:36,684 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2020-10-16 05:45:36,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2020-10-16 05:45:36,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:45:36,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2020-10-16 05:45:36,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:45:36,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:45:36,700 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:45:36,702 INFO L185 Difference]: Start difference. First operand has 11 places, 9 transitions, 21 flow. Second operand 3 states and 254 transitions. [2020-10-16 05:45:36,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 10 transitions, 35 flow [2020-10-16 05:45:36,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 10 transitions, 34 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:45:36,708 INFO L241 Difference]: Finished difference. Result has 13 places, 8 transitions, 26 flow [2020-10-16 05:45:36,711 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=13, PETRI_TRANSITIONS=8} [2020-10-16 05:45:36,712 INFO L342 CegarLoopForPetriNet]: 11 programPoint places, 2 predicate places. [2020-10-16 05:45:36,712 INFO L481 AbstractCegarLoop]: Abstraction has has 13 places, 8 transitions, 26 flow [2020-10-16 05:45:36,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:45:36,713 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:45:36,713 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:45:36,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:45:36,713 INFO L429 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:45:36,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:45:36,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1156012467, now seen corresponding path program 1 times [2020-10-16 05:45:36,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:45:36,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84959048] [2020-10-16 05:45:36,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:45:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:45:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 05:45:36,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84959048] [2020-10-16 05:45:36,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:45:36,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:45:36,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379980988] [2020-10-16 05:45:36,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:45:36,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:45:36,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:45:36,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:45:36,792 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 108 [2020-10-16 05:45:36,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 8 transitions, 26 flow. Second operand 3 states. [2020-10-16 05:45:36,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:45:36,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 108 [2020-10-16 05:45:36,793 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:45:36,827 INFO L129 PetriNetUnfolder]: 2/9 cut-off events. [2020-10-16 05:45:36,827 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:45:36,829 INFO L80 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 9 events. 2/9 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 14. Up to 5 conditions per place. [2020-10-16 05:45:36,829 INFO L132 encePairwiseOnDemand]: 105/108 looper letters, 3 selfloop transitions, 2 changer transitions 0/9 dead transitions. [2020-10-16 05:45:36,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 9 transitions, 38 flow [2020-10-16 05:45:36,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:45:36,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:45:36,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2020-10-16 05:45:36,834 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7685185185185185 [2020-10-16 05:45:36,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2020-10-16 05:45:36,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2020-10-16 05:45:36,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:45:36,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2020-10-16 05:45:36,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:45:36,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:45:36,842 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:45:36,843 INFO L185 Difference]: Start difference. First operand has 13 places, 8 transitions, 26 flow. Second operand 3 states and 249 transitions. [2020-10-16 05:45:36,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 9 transitions, 38 flow [2020-10-16 05:45:36,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 9 transitions, 34 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:45:36,844 INFO L241 Difference]: Finished difference. Result has 13 places, 9 transitions, 34 flow [2020-10-16 05:45:36,845 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=13, PETRI_TRANSITIONS=9} [2020-10-16 05:45:36,846 INFO L342 CegarLoopForPetriNet]: 11 programPoint places, 2 predicate places. [2020-10-16 05:45:36,846 INFO L481 AbstractCegarLoop]: Abstraction has has 13 places, 9 transitions, 34 flow [2020-10-16 05:45:36,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:45:36,847 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:45:36,847 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:45:36,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:45:36,847 INFO L429 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:45:36,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:45:36,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1156028401, now seen corresponding path program 1 times [2020-10-16 05:45:36,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:45:36,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207224022] [2020-10-16 05:45:36,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:45:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:45:36,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:45:36,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207224022] [2020-10-16 05:45:36,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884308719] [2020-10-16 05:45:36,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:45:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:45:37,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-16 05:45:37,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:45:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:45:37,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:45:37,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-16 05:45:37,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863147736] [2020-10-16 05:45:37,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:45:37,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:45:37,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:45:37,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:45:37,050 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 108 [2020-10-16 05:45:37,050 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 9 transitions, 34 flow. Second operand 5 states. [2020-10-16 05:45:37,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:45:37,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 108 [2020-10-16 05:45:37,050 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:45:37,069 INFO L129 PetriNetUnfolder]: 2/10 cut-off events. [2020-10-16 05:45:37,070 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-16 05:45:37,070 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 10 events. 2/10 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2020-10-16 05:45:37,070 INFO L132 encePairwiseOnDemand]: 105/108 looper letters, 3 selfloop transitions, 3 changer transitions 0/10 dead transitions. [2020-10-16 05:45:37,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 10 transitions, 50 flow [2020-10-16 05:45:37,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:45:37,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:45:37,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2020-10-16 05:45:37,073 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7662037037037037 [2020-10-16 05:45:37,074 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 331 transitions. [2020-10-16 05:45:37,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 331 transitions. [2020-10-16 05:45:37,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:45:37,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 331 transitions. [2020-10-16 05:45:37,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:45:37,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:45:37,077 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:45:37,078 INFO L185 Difference]: Start difference. First operand has 13 places, 9 transitions, 34 flow. Second operand 4 states and 331 transitions. [2020-10-16 05:45:37,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 10 transitions, 50 flow [2020-10-16 05:45:37,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 10 transitions, 46 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 05:45:37,079 INFO L241 Difference]: Finished difference. Result has 16 places, 10 transitions, 46 flow [2020-10-16 05:45:37,079 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=46, PETRI_PLACES=16, PETRI_TRANSITIONS=10} [2020-10-16 05:45:37,079 INFO L342 CegarLoopForPetriNet]: 11 programPoint places, 5 predicate places. [2020-10-16 05:45:37,080 INFO L481 AbstractCegarLoop]: Abstraction has has 16 places, 10 transitions, 46 flow [2020-10-16 05:45:37,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:45:37,080 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:45:37,080 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 05:45:37,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-16 05:45:37,296 INFO L429 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:45:37,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:45:37,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1068022483, now seen corresponding path program 2 times [2020-10-16 05:45:37,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:45:37,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561083122] [2020-10-16 05:45:37,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:45:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:45:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:45:37,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561083122] [2020-10-16 05:45:37,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986267994] [2020-10-16 05:45:37,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:45:37,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 05:45:37,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 05:45:37,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-16 05:45:37,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:45:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:45:37,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:45:37,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-16 05:45:37,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184520627] [2020-10-16 05:45:37,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:45:37,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:45:37,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:45:37,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:45:37,432 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 108 [2020-10-16 05:45:37,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 10 transitions, 46 flow. Second operand 6 states. [2020-10-16 05:45:37,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:45:37,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 108 [2020-10-16 05:45:37,433 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:45:37,459 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2020-10-16 05:45:37,460 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-16 05:45:37,460 INFO L80 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 11 events. 2/11 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 29. Up to 6 conditions per place. [2020-10-16 05:45:37,461 INFO L132 encePairwiseOnDemand]: 105/108 looper letters, 3 selfloop transitions, 4 changer transitions 0/11 dead transitions. [2020-10-16 05:45:37,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 11 transitions, 66 flow [2020-10-16 05:45:37,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:45:37,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:45:37,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 413 transitions. [2020-10-16 05:45:37,463 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7648148148148148 [2020-10-16 05:45:37,463 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 413 transitions. [2020-10-16 05:45:37,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 413 transitions. [2020-10-16 05:45:37,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:45:37,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 413 transitions. [2020-10-16 05:45:37,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:45:37,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:45:37,467 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:45:37,467 INFO L185 Difference]: Start difference. First operand has 16 places, 10 transitions, 46 flow. Second operand 5 states and 413 transitions. [2020-10-16 05:45:37,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 11 transitions, 66 flow [2020-10-16 05:45:37,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 11 transitions, 58 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 05:45:37,469 INFO L241 Difference]: Finished difference. Result has 19 places, 11 transitions, 58 flow [2020-10-16 05:45:37,469 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=19, PETRI_TRANSITIONS=11} [2020-10-16 05:45:37,469 INFO L342 CegarLoopForPetriNet]: 11 programPoint places, 8 predicate places. [2020-10-16 05:45:37,469 INFO L481 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 58 flow [2020-10-16 05:45:37,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:45:37,470 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:45:37,470 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2020-10-16 05:45:37,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:45:37,671 INFO L429 AbstractCegarLoop]: === Iteration 5 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:45:37,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:45:37,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1250544335, now seen corresponding path program 3 times [2020-10-16 05:45:37,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:45:37,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220435481] [2020-10-16 05:45:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:45:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:45:37,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:45:37,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220435481] [2020-10-16 05:45:37,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775991120] [2020-10-16 05:45:37,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:45:37,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 05:45:37,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 05:45:37,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:45:37,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:45:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-16 05:45:37,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-16 05:45:37,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2020-10-16 05:45:37,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047687874] [2020-10-16 05:45:37,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:45:37,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:45:37,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:45:37,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-16 05:45:37,819 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 108 [2020-10-16 05:45:37,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 58 flow. Second operand 4 states. [2020-10-16 05:45:37,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:45:37,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 108 [2020-10-16 05:45:37,819 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:45:37,844 INFO L129 PetriNetUnfolder]: 2/10 cut-off events. [2020-10-16 05:45:37,844 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 05:45:37,845 INFO L80 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 10 events. 2/10 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 30. Up to 5 conditions per place. [2020-10-16 05:45:37,845 INFO L132 encePairwiseOnDemand]: 105/108 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2020-10-16 05:45:37,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 10 transitions, 68 flow [2020-10-16 05:45:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:45:37,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:45:37,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 286 transitions. [2020-10-16 05:45:37,847 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6620370370370371 [2020-10-16 05:45:37,848 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 286 transitions. [2020-10-16 05:45:37,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 286 transitions. [2020-10-16 05:45:37,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:45:37,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 286 transitions. [2020-10-16 05:45:37,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:45:37,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:45:37,850 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:45:37,850 INFO L185 Difference]: Start difference. First operand has 19 places, 11 transitions, 58 flow. Second operand 4 states and 286 transitions. [2020-10-16 05:45:37,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 10 transitions, 68 flow [2020-10-16 05:45:37,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 10 transitions, 54 flow, removed 3 selfloop flow, removed 4 redundant places. [2020-10-16 05:45:37,852 INFO L241 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2020-10-16 05:45:37,852 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2020-10-16 05:45:37,852 INFO L342 CegarLoopForPetriNet]: 11 programPoint places, 6 predicate places. [2020-10-16 05:45:37,852 INFO L481 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2020-10-16 05:45:37,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:45:38,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:45:38,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:45:38 BasicIcfg [2020-10-16 05:45:38,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:45:38,072 INFO L168 Benchmark]: Toolchain (without parser) took 4926.45 ms. Allocated memory was 248.0 MB in the beginning and 367.0 MB in the end (delta: 119.0 MB). Free memory was 203.0 MB in the beginning and 243.9 MB in the end (delta: -40.9 MB). Peak memory consumption was 78.1 MB. Max. memory is 14.2 GB. [2020-10-16 05:45:38,074 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 248.0 MB. Free memory is still 224.4 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:45:38,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.42 ms. Allocated memory was 248.0 MB in the beginning and 304.1 MB in the end (delta: 56.1 MB). Free memory was 203.0 MB in the beginning and 259.6 MB in the end (delta: -56.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 14.2 GB. [2020-10-16 05:45:38,076 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.39 ms. Allocated memory is still 304.1 MB. Free memory was 259.6 MB in the beginning and 257.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:45:38,077 INFO L168 Benchmark]: Boogie Preprocessor took 27.44 ms. Allocated memory is still 304.1 MB. Free memory was 257.1 MB in the beginning and 254.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:45:38,078 INFO L168 Benchmark]: RCFGBuilder took 413.64 ms. Allocated memory is still 304.1 MB. Free memory was 254.5 MB in the beginning and 232.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-16 05:45:38,079 INFO L168 Benchmark]: TraceAbstraction took 3732.71 ms. Allocated memory was 304.1 MB in the beginning and 367.0 MB in the end (delta: 62.9 MB). Free memory was 232.4 MB in the beginning and 243.9 MB in the end (delta: -11.5 MB). Peak memory consumption was 51.4 MB. Max. memory is 14.2 GB. [2020-10-16 05:45:38,082 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 248.0 MB. Free memory is still 224.4 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 669.42 ms. Allocated memory was 248.0 MB in the beginning and 304.1 MB in the end (delta: 56.1 MB). Free memory was 203.0 MB in the beginning and 259.6 MB in the end (delta: -56.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 77.39 ms. Allocated memory is still 304.1 MB. Free memory was 259.6 MB in the beginning and 257.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.44 ms. Allocated memory is still 304.1 MB. Free memory was 257.1 MB in the beginning and 254.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 413.64 ms. Allocated memory is still 304.1 MB. Free memory was 254.5 MB in the beginning and 232.4 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3732.71 ms. Allocated memory was 304.1 MB in the beginning and 367.0 MB in the end (delta: 62.9 MB). Free memory was 232.4 MB in the beginning and 243.9 MB in the end (delta: -11.5 MB). Peak memory consumption was 51.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 226 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 3 SemBasedMoverChecksPositive, 8 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 51 PlacesBefore, 11 PlacesAfterwards, 52 TransitionsBefore, 9 TransitionsAfterwards, 352 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 49 TotalNumberOfCompositions, 291 MoverChecksTotal - PositiveResult [Line: 695]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 16 SDtfs, 2 SDslu, 1 SDs, 0 SdLazy, 34 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 59 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 729 SizeOfPredicates, 3 NumberOfNonLiveVariables, 256 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 7/21 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...