/usr/bin/java -Xmx8000000000 -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-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:17:08,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:17:08,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:17:08,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:17:08,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:17:08,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:17:08,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:17:08,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:17:08,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:17:08,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:17:08,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:17:08,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:17:08,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:17:08,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:17:08,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:17:08,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:17:08,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:17:08,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:17:08,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:17:08,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:17:08,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:17:08,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:17:08,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:17:08,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:17:08,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:17:08,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:17:08,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:17:08,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:17:08,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:17:08,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:17:08,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:17:08,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:17:08,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:17:08,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:17:08,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:17:08,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:17:08,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:17:08,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:17:08,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:17:08,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:17:08,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:17:08,782 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 [2020-04-17 22:17:08,796 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:17:08,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:17:08,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:17:08,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:17:08,798 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:17:08,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:17:08,799 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:17:08,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:17:08,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:17:08,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:17:08,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:17:08,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:17:08,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:17:08,800 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:17:08,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:17:08,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:17:08,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:17:08,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:17:08,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:17:08,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:17:08,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:17:08,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:17:08,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:17:08,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:17:08,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:17:08,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:17:08,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:17:08,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:17:08,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:17:09,112 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:17:09,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:17:09,137 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:17:09,138 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:17:09,139 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:17:09,140 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i [2020-04-17 22:17:09,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c32bfed9/50ee61275fec4ff2b2216592841695e5/FLAG1cdfe335a [2020-04-17 22:17:09,783 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:17:09,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i [2020-04-17 22:17:09,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c32bfed9/50ee61275fec4ff2b2216592841695e5/FLAG1cdfe335a [2020-04-17 22:17:10,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c32bfed9/50ee61275fec4ff2b2216592841695e5 [2020-04-17 22:17:10,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:17:10,096 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:17:10,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:17:10,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:17:10,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:17:10,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:17:10" (1/1) ... [2020-04-17 22:17:10,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e861b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:17:10, skipping insertion in model container [2020-04-17 22:17:10,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:17:10" (1/1) ... [2020-04-17 22:17:10,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:17:10,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:17:10,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:17:10,664 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:17:10,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:17:10,800 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:17:10,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:17:10 WrapperNode [2020-04-17 22:17:10,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:17:10,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:17:10,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:17:10,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:17:10,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:17:10" (1/1) ... [2020-04-17 22:17:10,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:17:10" (1/1) ... [2020-04-17 22:17:10,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:17:10,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:17:10,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:17:10,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:17:10,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:17:10" (1/1) ... [2020-04-17 22:17:10,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:17:10" (1/1) ... [2020-04-17 22:17:10,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:17:10" (1/1) ... [2020-04-17 22:17:10,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:17:10" (1/1) ... [2020-04-17 22:17:10,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:17:10" (1/1) ... [2020-04-17 22:17:10,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:17:10" (1/1) ... [2020-04-17 22:17:10,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:17:10" (1/1) ... [2020-04-17 22:17:10,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:17:10,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:17:10,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:17:10,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:17:10,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:17:10" (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 [2020-04-17 22:17:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:17:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:17:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:17:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:17:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:17:10,958 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:17:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:17:10,959 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:17:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:17:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:17:10,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:17:10,963 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:17:11,340 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:17:11,341 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:17:11,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:17:11 BoogieIcfgContainer [2020-04-17 22:17:11,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:17:11,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:17:11,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:17:11,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:17:11,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:17:10" (1/3) ... [2020-04-17 22:17:11,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150428fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:17:11, skipping insertion in model container [2020-04-17 22:17:11,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:17:10" (2/3) ... [2020-04-17 22:17:11,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150428fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:17:11, skipping insertion in model container [2020-04-17 22:17:11,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:17:11" (3/3) ... [2020-04-17 22:17:11,354 INFO L109 eAbstractionObserver]: Analyzing ICFG safe022_tso.oepc.i [2020-04-17 22:17:11,364 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:17:11,364 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:17:11,370 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:17:11,371 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:17:11,393 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,394 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,394 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,394 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,395 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,395 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,396 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,396 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,396 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,396 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,397 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,397 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,401 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,402 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,402 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,402 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,411 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,411 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,411 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,411 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:17:11,426 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-17 22:17:11,447 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:17:11,448 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:17:11,448 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:17:11,448 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:17:11,448 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:17:11,449 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:17:11,449 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:17:11,449 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:17:11,464 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 56 transitions, 122 flow [2020-04-17 22:17:11,466 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-17 22:17:11,508 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-17 22:17:11,508 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:17:11,513 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-17 22:17:11,515 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 122 flow [2020-04-17 22:17:11,534 INFO L129 PetriNetUnfolder]: 2/54 cut-off events. [2020-04-17 22:17:11,534 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:17:11,535 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 2/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-17 22:17:11,537 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-17 22:17:11,538 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:17:13,115 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1165 [2020-04-17 22:17:13,115 INFO L214 etLargeBlockEncoding]: Total number of compositions: 48 [2020-04-17 22:17:13,122 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-17 22:17:13,138 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-17 22:17:13,140 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-17 22:17:13,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-17 22:17:13,150 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:17:13,150 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-17 22:17:13,151 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:17:13,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:17:13,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1988358065, now seen corresponding path program 1 times [2020-04-17 22:17:13,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:17:13,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748279109] [2020-04-17 22:17:13,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:17:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:17:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:17:13,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748279109] [2020-04-17 22:17:13,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:17:13,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:17:13,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134253826] [2020-04-17 22:17:13,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:17:13,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:17:13,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:17:13,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:17:13,423 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-17 22:17:13,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:17:13,470 INFO L93 Difference]: Finished difference Result 70 states and 149 transitions. [2020-04-17 22:17:13,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:17:13,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-17 22:17:13,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:17:13,498 INFO L225 Difference]: With dead ends: 70 [2020-04-17 22:17:13,498 INFO L226 Difference]: Without dead ends: 54 [2020-04-17 22:17:13,501 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:17:13,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-04-17 22:17:13,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-04-17 22:17:13,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-04-17 22:17:13,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 109 transitions. [2020-04-17 22:17:13,560 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 109 transitions. Word has length 6 [2020-04-17 22:17:13,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:17:13,561 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 109 transitions. [2020-04-17 22:17:13,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:17:13,562 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 109 transitions. [2020-04-17 22:17:13,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-17 22:17:13,563 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:17:13,563 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:17:13,564 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:17:13,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:17:13,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1509525162, now seen corresponding path program 1 times [2020-04-17 22:17:13,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:17:13,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547840816] [2020-04-17 22:17:13,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:17:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:17:13,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:17:13,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547840816] [2020-04-17 22:17:13,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:17:13,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:17:13,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708869979] [2020-04-17 22:17:13,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:17:13,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:17:13,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:17:13,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:17:13,687 INFO L87 Difference]: Start difference. First operand 54 states and 109 transitions. Second operand 4 states. [2020-04-17 22:17:13,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:17:13,715 INFO L93 Difference]: Finished difference Result 60 states and 113 transitions. [2020-04-17 22:17:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:17:13,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-04-17 22:17:13,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:17:13,719 INFO L225 Difference]: With dead ends: 60 [2020-04-17 22:17:13,719 INFO L226 Difference]: Without dead ends: 36 [2020-04-17 22:17:13,721 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:17:13,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-17 22:17:13,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-17 22:17:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-17 22:17:13,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 63 transitions. [2020-04-17 22:17:13,727 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 63 transitions. Word has length 7 [2020-04-17 22:17:13,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:17:13,728 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 63 transitions. [2020-04-17 22:17:13,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:17:13,728 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 63 transitions. [2020-04-17 22:17:13,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:17:13,729 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:17:13,730 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:17:13,730 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:17:13,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:17:13,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1014872071, now seen corresponding path program 1 times [2020-04-17 22:17:13,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:17:13,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603176898] [2020-04-17 22:17:13,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:17:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:17:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:17:13,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603176898] [2020-04-17 22:17:13,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:17:13,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:17:13,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972361470] [2020-04-17 22:17:13,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:17:13,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:17:13,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:17:13,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:17:13,820 INFO L87 Difference]: Start difference. First operand 36 states and 63 transitions. Second operand 4 states. [2020-04-17 22:17:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:17:13,851 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-04-17 22:17:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:17:13,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 22:17:13,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:17:13,852 INFO L225 Difference]: With dead ends: 39 [2020-04-17 22:17:13,852 INFO L226 Difference]: Without dead ends: 29 [2020-04-17 22:17:13,853 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:17:13,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-04-17 22:17:13,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-04-17 22:17:13,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-04-17 22:17:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 44 transitions. [2020-04-17 22:17:13,857 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 44 transitions. Word has length 9 [2020-04-17 22:17:13,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:17:13,858 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 44 transitions. [2020-04-17 22:17:13,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:17:13,858 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2020-04-17 22:17:13,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:17:13,859 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:17:13,859 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:17:13,859 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:17:13,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:17:13,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1964607327, now seen corresponding path program 1 times [2020-04-17 22:17:13,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:17:13,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866469218] [2020-04-17 22:17:13,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:17:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:17:13,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:17:13,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866469218] [2020-04-17 22:17:13,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:17:13,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:17:13,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745092181] [2020-04-17 22:17:13,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:17:13,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:17:13,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:17:13,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:17:13,934 INFO L87 Difference]: Start difference. First operand 29 states and 44 transitions. Second operand 5 states. [2020-04-17 22:17:13,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:17:13,969 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2020-04-17 22:17:13,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:17:13,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-17 22:17:13,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:17:13,970 INFO L225 Difference]: With dead ends: 27 [2020-04-17 22:17:13,970 INFO L226 Difference]: Without dead ends: 22 [2020-04-17 22:17:13,971 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:17:13,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-04-17 22:17:13,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-04-17 22:17:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-04-17 22:17:13,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2020-04-17 22:17:13,974 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 10 [2020-04-17 22:17:13,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:17:13,974 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2020-04-17 22:17:13,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:17:13,974 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-04-17 22:17:13,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:17:13,975 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:17:13,975 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:17:13,975 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:17:13,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:17:13,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1799382783, now seen corresponding path program 1 times [2020-04-17 22:17:13,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:17:13,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972198411] [2020-04-17 22:17:13,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:17:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:17:14,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:17:14,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972198411] [2020-04-17 22:17:14,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:17:14,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:17:14,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597810589] [2020-04-17 22:17:14,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:17:14,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:17:14,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:17:14,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:17:14,012 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand 4 states. [2020-04-17 22:17:14,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:17:14,026 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2020-04-17 22:17:14,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:17:14,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 22:17:14,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:17:14,026 INFO L225 Difference]: With dead ends: 21 [2020-04-17 22:17:14,026 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:17:14,027 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:17:14,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:17:14,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:17:14,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:17:14,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:17:14,028 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-17 22:17:14,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:17:14,028 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:17:14,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:17:14,028 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:17:14,028 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:17:14,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:17:14 BasicIcfg [2020-04-17 22:17:14,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:17:14,035 INFO L168 Benchmark]: Toolchain (without parser) took 3956.29 ms. Allocated memory was 143.7 MB in the beginning and 249.0 MB in the end (delta: 105.4 MB). Free memory was 100.1 MB in the beginning and 152.0 MB in the end (delta: -51.9 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:17:14,036 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-17 22:17:14,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.99 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 98.2 MB in the beginning and 156.4 MB in the end (delta: -58.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:17:14,038 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.98 ms. Allocated memory is still 201.3 MB. Free memory was 156.4 MB in the beginning and 154.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:17:14,039 INFO L168 Benchmark]: Boogie Preprocessor took 26.71 ms. Allocated memory is still 201.3 MB. Free memory was 154.3 MB in the beginning and 152.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:17:14,040 INFO L168 Benchmark]: RCFGBuilder took 466.73 ms. Allocated memory is still 201.3 MB. Free memory was 152.9 MB in the beginning and 133.2 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-04-17 22:17:14,041 INFO L168 Benchmark]: TraceAbstraction took 2686.23 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 132.6 MB in the beginning and 152.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-04-17 22:17:14,045 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 703.99 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 98.2 MB in the beginning and 156.4 MB in the end (delta: -58.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.98 ms. Allocated memory is still 201.3 MB. Free memory was 156.4 MB in the beginning and 154.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.71 ms. Allocated memory is still 201.3 MB. Free memory was 154.3 MB in the beginning and 152.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 466.73 ms. Allocated memory is still 201.3 MB. Free memory was 152.9 MB in the beginning and 133.2 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2686.23 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 132.6 MB in the beginning and 152.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 61 ProgramPointsBefore, 22 ProgramPointsAfterwards, 56 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 356 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1165 CheckedPairsTotal, 48 TotalNumberOfCompositions - PositiveResult [Line: 7]: 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 3 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 60 SDtfs, 48 SDslu, 60 SDs, 0 SdLazy, 45 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 893 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...