/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-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 11:24:53,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 11:24:53,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 11:24:53,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 11:24:53,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 11:24:53,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 11:24:53,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 11:24:53,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 11:24:53,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 11:24:53,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 11:24:53,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 11:24:53,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 11:24:53,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 11:24:53,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 11:24:53,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 11:24:53,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 11:24:53,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 11:24:53,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 11:24:53,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 11:24:53,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 11:24:53,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 11:24:53,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 11:24:53,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 11:24:53,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 11:24:53,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 11:24:53,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 11:24:53,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 11:24:53,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 11:24:53,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 11:24:53,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 11:24:53,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 11:24:53,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 11:24:53,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 11:24:53,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 11:24:53,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 11:24:53,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 11:24:53,724 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-FA-SemanticLbe.epf [2021-03-11 11:24:53,751 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 11:24:53,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 11:24:53,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 11:24:53,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 11:24:53,753 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 11:24:53,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 11:24:53,753 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 11:24:53,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 11:24:53,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 11:24:53,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 11:24:53,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 11:24:53,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 11:24:53,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 11:24:53,755 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 11:24:53,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 11:24:53,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 11:24:53,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 11:24:53,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 11:24:53,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 11:24:53,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 11:24:53,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 11:24:53,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:24:53,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 11:24:53,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 11:24:53,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 11:24:53,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 11:24:53,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 11:24:53,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 11:24:53,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 11:24:53,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 11:24:54,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 11:24:54,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 11:24:54,009 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 11:24:54,010 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 11:24:54,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i [2021-03-11 11:24:54,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e97a22eb/8df15057be7f4ab48d2a277823fe982b/FLAGbef49da19 [2021-03-11 11:24:54,462 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 11:24:54,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i [2021-03-11 11:24:54,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e97a22eb/8df15057be7f4ab48d2a277823fe982b/FLAGbef49da19 [2021-03-11 11:24:54,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e97a22eb/8df15057be7f4ab48d2a277823fe982b [2021-03-11 11:24:54,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 11:24:54,493 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 11:24:54,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 11:24:54,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 11:24:54,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 11:24:54,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:24:54" (1/1) ... [2021-03-11 11:24:54,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f332f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:54, skipping insertion in model container [2021-03-11 11:24:54,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:24:54" (1/1) ... [2021-03-11 11:24:54,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 11:24:54,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 11:24:54,660 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i[949,962] [2021-03-11 11:24:54,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:24:54,794 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 11:24:54,807 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i[949,962] [2021-03-11 11:24:54,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:24:54,892 INFO L208 MainTranslator]: Completed translation [2021-03-11 11:24:54,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:54 WrapperNode [2021-03-11 11:24:54,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 11:24:54,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 11:24:54,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 11:24:54,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 11:24:54,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:54" (1/1) ... [2021-03-11 11:24:54,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:54" (1/1) ... [2021-03-11 11:24:54,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 11:24:54,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 11:24:54,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 11:24:54,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 11:24:54,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:54" (1/1) ... [2021-03-11 11:24:54,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:54" (1/1) ... [2021-03-11 11:24:54,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:54" (1/1) ... [2021-03-11 11:24:54,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:54" (1/1) ... [2021-03-11 11:24:54,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:54" (1/1) ... [2021-03-11 11:24:54,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:54" (1/1) ... [2021-03-11 11:24:54,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:54" (1/1) ... [2021-03-11 11:24:54,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 11:24:54,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 11:24:54,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 11:24:54,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 11:24:54,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:24:54,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 11:24:54,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 11:24:54,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 11:24:54,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 11:24:54,997 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 11:24:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 11:24:54,997 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 11:24:54,997 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 11:24:54,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 11:24:54,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 11:24:54,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 11:24:54,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 11:24:54,998 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 11:24:55,258 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 11:24:55,258 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 11:24:55,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:24:55 BoogieIcfgContainer [2021-03-11 11:24:55,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 11:24:55,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 11:24:55,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 11:24:55,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 11:24:55,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 11:24:54" (1/3) ... [2021-03-11 11:24:55,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc3f356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:24:55, skipping insertion in model container [2021-03-11 11:24:55,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:24:54" (2/3) ... [2021-03-11 11:24:55,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc3f356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:24:55, skipping insertion in model container [2021-03-11 11:24:55,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:24:55" (3/3) ... [2021-03-11 11:24:55,264 INFO L111 eAbstractionObserver]: Analyzing ICFG safe022_tso.opt.i [2021-03-11 11:24:55,269 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 11:24:55,269 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 11:24:55,272 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 11:24:55,272 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 11:24:55,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,295 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,295 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,296 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,296 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,296 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,296 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,296 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,296 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,296 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,297 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,297 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,297 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,298 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,298 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,298 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,298 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,299 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,299 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,299 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,299 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,300 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,300 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,301 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,301 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,305 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,305 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,305 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:24:55,307 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 11:24:55,317 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 11:24:55,336 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 11:24:55,336 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 11:24:55,337 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 11:24:55,337 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 11:24:55,337 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 11:24:55,337 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 11:24:55,337 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 11:24:55,338 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 11:24:55,347 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 11:24:55,353 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 61 transitions, 132 flow [2021-03-11 11:24:55,355 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 61 transitions, 132 flow [2021-03-11 11:24:55,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2021-03-11 11:24:55,388 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-03-11 11:24:55,388 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 11:24:55,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-11 11:24:55,394 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2021-03-11 11:24:57,032 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-11 11:24:57,218 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-11 11:24:57,293 INFO L131 LiptonReduction]: Checked pairs total: 1188 [2021-03-11 11:24:57,293 INFO L133 LiptonReduction]: Total number of compositions: 55 [2021-03-11 11:24:57,301 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2021-03-11 11:24:57,308 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 74 states, 72 states have (on average 2.2222222222222223) internal successors, (160), 73 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:57,310 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 72 states have (on average 2.2222222222222223) internal successors, (160), 73 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:57,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-03-11 11:24:57,313 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:24:57,313 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-11 11:24:57,313 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:24:57,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:24:57,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1837244323, now seen corresponding path program 1 times [2021-03-11 11:24:57,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:24:57,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705472207] [2021-03-11 11:24:57,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:24:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:24:57,440 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 11:24:57,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:24:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:24:57,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705472207] [2021-03-11 11:24:57,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:24:57,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 11:24:57,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685041718] [2021-03-11 11:24:57,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 11:24:57,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:24:57,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 11:24:57,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:24:57,466 INFO L87 Difference]: Start difference. First operand has 74 states, 72 states have (on average 2.2222222222222223) internal successors, (160), 73 states have internal predecessors, (160), 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) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:57,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:24:57,485 INFO L93 Difference]: Finished difference Result 82 states and 166 transitions. [2021-03-11 11:24:57,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 11:24:57,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2021-03-11 11:24:57,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:24:57,492 INFO L225 Difference]: With dead ends: 82 [2021-03-11 11:24:57,492 INFO L226 Difference]: Without dead ends: 54 [2021-03-11 11:24:57,493 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 11:24:57,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-03-11 11:24:57,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-03-11 11:24:57,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.056603773584906) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 109 transitions. [2021-03-11 11:24:57,515 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 109 transitions. Word has length 6 [2021-03-11 11:24:57,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:24:57,515 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 109 transitions. [2021-03-11 11:24:57,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:57,515 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 109 transitions. [2021-03-11 11:24:57,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-03-11 11:24:57,516 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:24:57,516 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:24:57,516 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 11:24:57,516 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:24:57,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:24:57,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1120026558, now seen corresponding path program 1 times [2021-03-11 11:24:57,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:24:57,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305965211] [2021-03-11 11:24:57,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:24:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:24:57,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:57,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:24:57,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:57,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:24:57,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:24:57,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305965211] [2021-03-11 11:24:57,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:24:57,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:24:57,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605226797] [2021-03-11 11:24:57,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:24:57,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:24:57,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:24:57,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:24:57,573 INFO L87 Difference]: Start difference. First operand 54 states and 109 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:57,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:24:57,590 INFO L93 Difference]: Finished difference Result 60 states and 113 transitions. [2021-03-11 11:24:57,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 11:24:57,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) Word has length 7 [2021-03-11 11:24:57,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:24:57,592 INFO L225 Difference]: With dead ends: 60 [2021-03-11 11:24:57,592 INFO L226 Difference]: Without dead ends: 36 [2021-03-11 11:24:57,592 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:24:57,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-03-11 11:24:57,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-03-11 11:24:57,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:57,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2021-03-11 11:24:57,595 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 7 [2021-03-11 11:24:57,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:24:57,595 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2021-03-11 11:24:57,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:57,595 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2021-03-11 11:24:57,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-03-11 11:24:57,597 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:24:57,597 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:24:57,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 11:24:57,597 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:24:57,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:24:57,597 INFO L82 PathProgramCache]: Analyzing trace with hash -2017334622, now seen corresponding path program 1 times [2021-03-11 11:24:57,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:24:57,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388364109] [2021-03-11 11:24:57,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:24:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:24:57,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:57,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:24:57,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:57,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 11:24:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:24:57,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388364109] [2021-03-11 11:24:57,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:24:57,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:24:57,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546874037] [2021-03-11 11:24:57,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:24:57,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:24:57,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:24:57,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:24:57,670 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:57,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:24:57,684 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2021-03-11 11:24:57,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:24:57,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2021-03-11 11:24:57,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:24:57,685 INFO L225 Difference]: With dead ends: 39 [2021-03-11 11:24:57,685 INFO L226 Difference]: Without dead ends: 29 [2021-03-11 11:24:57,685 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:24:57,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-03-11 11:24:57,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-03-11 11:24:57,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:57,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 44 transitions. [2021-03-11 11:24:57,687 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 44 transitions. Word has length 9 [2021-03-11 11:24:57,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:24:57,688 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 44 transitions. [2021-03-11 11:24:57,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:57,688 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2021-03-11 11:24:57,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:24:57,688 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:24:57,688 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:24:57,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 11:24:57,688 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:24:57,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:24:57,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1920236357, now seen corresponding path program 1 times [2021-03-11 11:24:57,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:24:57,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396717386] [2021-03-11 11:24:57,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:24:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:24:57,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:57,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:24:57,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:57,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:24:57,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:57,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 11:24:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:24:57,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396717386] [2021-03-11 11:24:57,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:24:57,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:24:57,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301284557] [2021-03-11 11:24:57,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:24:57,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:24:57,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:24:57,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:24:57,724 INFO L87 Difference]: Start difference. First operand 29 states and 44 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:57,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:24:57,746 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2021-03-11 11:24:57,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:24:57,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) Word has length 10 [2021-03-11 11:24:57,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:24:57,747 INFO L225 Difference]: With dead ends: 27 [2021-03-11 11:24:57,748 INFO L226 Difference]: Without dead ends: 22 [2021-03-11 11:24:57,748 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:24:57,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-03-11 11:24:57,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-03-11 11:24:57,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2021-03-11 11:24:57,752 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 10 [2021-03-11 11:24:57,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:24:57,752 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2021-03-11 11:24:57,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:57,752 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2021-03-11 11:24:57,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-03-11 11:24:57,752 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:24:57,752 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:24:57,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 11:24:57,753 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:24:57,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:24:57,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1489909263, now seen corresponding path program 1 times [2021-03-11 11:24:57,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:24:57,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344518456] [2021-03-11 11:24:57,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:24:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:24:57,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:57,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:24:57,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:24:57,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:24:57,798 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 11:24:57,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 11:24:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:24:57,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344518456] [2021-03-11 11:24:57,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:24:57,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:24:57,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548879805] [2021-03-11 11:24:57,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:24:57,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:24:57,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:24:57,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:24:57,805 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:57,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:24:57,828 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2021-03-11 11:24:57,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:24:57,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) Word has length 12 [2021-03-11 11:24:57,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:24:57,829 INFO L225 Difference]: With dead ends: 21 [2021-03-11 11:24:57,829 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 11:24:57,829 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:24:57,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 11:24:57,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 11:24:57,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:57,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 11:24:57,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-03-11 11:24:57,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:24:57,830 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 11:24:57,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:24:57,830 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 11:24:57,830 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 11:24:57,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 11:24:57,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 11:24:57 BasicIcfg [2021-03-11 11:24:57,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 11:24:57,833 INFO L168 Benchmark]: Toolchain (without parser) took 3342.02 ms. Allocated memory was 255.9 MB in the beginning and 434.1 MB in the end (delta: 178.3 MB). Free memory was 235.3 MB in the beginning and 245.8 MB in the end (delta: -10.5 MB). Peak memory consumption was 168.8 MB. Max. memory is 16.0 GB. [2021-03-11 11:24:57,833 INFO L168 Benchmark]: CDTParser took 0.08 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. [2021-03-11 11:24:57,834 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.73 ms. Allocated memory was 255.9 MB in the beginning and 360.7 MB in the end (delta: 104.9 MB). Free memory was 234.7 MB in the beginning and 323.5 MB in the end (delta: -88.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 11:24:57,834 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.26 ms. Allocated memory is still 360.7 MB. Free memory was 323.5 MB in the beginning and 322.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:24:57,834 INFO L168 Benchmark]: Boogie Preprocessor took 24.13 ms. Allocated memory is still 360.7 MB. Free memory was 322.1 MB in the beginning and 320.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 11:24:57,835 INFO L168 Benchmark]: RCFGBuilder took 305.14 ms. Allocated memory is still 360.7 MB. Free memory was 320.8 MB in the beginning and 300.4 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 11:24:57,835 INFO L168 Benchmark]: TraceAbstraction took 2572.31 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 300.4 MB in the beginning and 245.8 MB in the end (delta: 54.6 MB). Peak memory consumption was 130.5 MB. Max. memory is 16.0 GB. [2021-03-11 11:24:57,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 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 398.73 ms. Allocated memory was 255.9 MB in the beginning and 360.7 MB in the end (delta: 104.9 MB). Free memory was 234.7 MB in the beginning and 323.5 MB in the end (delta: -88.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 35.26 ms. Allocated memory is still 360.7 MB. Free memory was 323.5 MB in the beginning and 322.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.13 ms. Allocated memory is still 360.7 MB. Free memory was 322.1 MB in the beginning and 320.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 305.14 ms. Allocated memory is still 360.7 MB. Free memory was 320.8 MB in the beginning and 300.4 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2572.31 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 300.4 MB in the beginning and 245.8 MB in the end (delta: 54.6 MB). Peak memory consumption was 130.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1937.9ms, 66 PlacesBefore, 22 PlacesAfterwards, 61 TransitionsBefore, 15 TransitionsAfterwards, 696 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 55 TotalNumberOfCompositions, 1188 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 739, positive: 685, positive conditional: 0, positive unconditional: 685, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 501, positive: 478, positive conditional: 0, positive unconditional: 478, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 501, positive: 475, positive conditional: 0, positive unconditional: 475, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 84, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 739, positive: 207, positive conditional: 0, positive unconditional: 207, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 501, unknown conditional: 0, unknown unconditional: 501] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2496.0ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 6.7ms, AutomataDifference: 121.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1970.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 61 SDtfs, 53 SDslu, 53 SDs, 0 SdLazy, 46 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 33.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 57.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 23.3ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.5ms SsaConstructionTime, 70.8ms SatisfiabilityAnalysisTime, 201.2ms InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 167 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...