/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-16 14:08:16,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 14:08:16,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 14:08:17,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 14:08:17,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 14:08:17,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 14:08:17,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 14:08:17,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 14:08:17,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 14:08:17,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 14:08:17,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 14:08:17,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 14:08:17,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 14:08:17,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 14:08:17,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 14:08:17,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 14:08:17,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 14:08:17,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 14:08:17,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 14:08:17,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 14:08:17,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 14:08:17,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 14:08:17,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 14:08:17,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 14:08:17,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-16 14:08:17,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-16 14:08:17,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-16 14:08:17,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-16 14:08:17,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-16 14:08:17,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-16 14:08:17,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 14:08:17,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 14:08:17,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 14:08:17,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 14:08:17,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 14:08:17,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 14:08:17,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 14:08:17,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 14:08:17,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 14:08:17,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 14:08:17,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 14:08:17,047 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-16 14:08:17,075 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 14:08:17,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 14:08:17,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 14:08:17,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 14:08:17,077 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 14:08:17,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 14:08:17,078 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 14:08:17,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 14:08:17,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 14:08:17,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 14:08:17,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 14:08:17,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 14:08:17,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 14:08:17,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 14:08:17,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 14:08:17,080 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 14:08:17,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 14:08:17,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 14:08:17,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 14:08:17,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 14:08:17,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 14:08:17,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 14:08:17,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 14:08:17,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-16 14:08:17,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 14:08:17,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 14:08:17,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 14:08:17,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 14:08:17,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-16 14:08:17,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-16 14:08:17,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 14:08:17,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 14:08:17,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 14:08:17,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 14:08:17,597 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 14:08:17,599 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2020-09-16 14:08:17,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ec73d5dd/27e6abfe32ee42ecbc805429d2cbe0ce/FLAG4d3bfce54 [2020-09-16 14:08:18,438 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 14:08:18,439 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2020-09-16 14:08:18,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ec73d5dd/27e6abfe32ee42ecbc805429d2cbe0ce/FLAG4d3bfce54 [2020-09-16 14:08:18,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ec73d5dd/27e6abfe32ee42ecbc805429d2cbe0ce [2020-09-16 14:08:18,665 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 14:08:18,673 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 14:08:18,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 14:08:18,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 14:08:18,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 14:08:18,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 02:08:18" (1/1) ... [2020-09-16 14:08:18,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd75599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:08:18, skipping insertion in model container [2020-09-16 14:08:18,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 02:08:18" (1/1) ... [2020-09-16 14:08:18,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 14:08:18,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 14:08:19,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 14:08:19,397 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 14:08:19,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 14:08:19,535 INFO L208 MainTranslator]: Completed translation [2020-09-16 14:08:19,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:08:19 WrapperNode [2020-09-16 14:08:19,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 14:08:19,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 14:08:19,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 14:08:19,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 14:08:19,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:08:19" (1/1) ... [2020-09-16 14:08:19,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:08:19" (1/1) ... [2020-09-16 14:08:19,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 14:08:19,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 14:08:19,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 14:08:19,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 14:08:19,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:08:19" (1/1) ... [2020-09-16 14:08:19,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:08:19" (1/1) ... [2020-09-16 14:08:19,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:08:19" (1/1) ... [2020-09-16 14:08:19,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:08:19" (1/1) ... [2020-09-16 14:08:19,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:08:19" (1/1) ... [2020-09-16 14:08:19,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:08:19" (1/1) ... [2020-09-16 14:08:19,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:08:19" (1/1) ... [2020-09-16 14:08:19,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 14:08:19,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 14:08:19,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 14:08:19,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 14:08:19,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:08:19" (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 [2020-09-16 14:08:19,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-16 14:08:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-09-16 14:08:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-09-16 14:08:19,818 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-16 14:08:19,819 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-16 14:08:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 14:08:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 14:08:19,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 14:08:19,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 14:08:19,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 14:08:19,822 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 14:08:20,173 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 14:08:20,174 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-16 14:08:20,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 02:08:20 BoogieIcfgContainer [2020-09-16 14:08:20,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 14:08:20,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 14:08:20,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 14:08:20,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 14:08:20,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 02:08:18" (1/3) ... [2020-09-16 14:08:20,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147eb4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 02:08:20, skipping insertion in model container [2020-09-16 14:08:20,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:08:19" (2/3) ... [2020-09-16 14:08:20,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@147eb4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 02:08:20, skipping insertion in model container [2020-09-16 14:08:20,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 02:08:20" (3/3) ... [2020-09-16 14:08:20,193 INFO L109 eAbstractionObserver]: Analyzing ICFG peterson.i [2020-09-16 14:08:20,208 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 14:08:20,208 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-16 14:08:20,220 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-16 14:08:20,222 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 14:08:20,259 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,260 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,260 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,260 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,262 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,264 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,271 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,271 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,271 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,272 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,276 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,277 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,288 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,289 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,289 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,306 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,306 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,309 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,309 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:08:20,346 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-16 14:08:20,375 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 14:08:20,375 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 14:08:20,375 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-16 14:08:20,376 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-16 14:08:20,376 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 14:08:20,376 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 14:08:20,376 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 14:08:20,376 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 14:08:20,398 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 62 transitions, 146 flow [2020-09-16 14:08:20,401 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions, 146 flow [2020-09-16 14:08:20,450 INFO L129 PetriNetUnfolder]: 7/62 cut-off events. [2020-09-16 14:08:20,450 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-09-16 14:08:20,461 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 62 events. 7/62 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2020-09-16 14:08:20,464 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions, 146 flow [2020-09-16 14:08:20,487 INFO L129 PetriNetUnfolder]: 7/62 cut-off events. [2020-09-16 14:08:20,487 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-09-16 14:08:20,488 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 62 events. 7/62 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2020-09-16 14:08:20,490 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 756 [2020-09-16 14:08:20,492 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-16 14:08:21,530 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-09-16 14:08:21,595 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1396 [2020-09-16 14:08:21,596 INFO L214 etLargeBlockEncoding]: Total number of compositions: 33 [2020-09-16 14:08:21,602 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 34 transitions, 90 flow [2020-09-16 14:08:21,627 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 197 states. [2020-09-16 14:08:21,630 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-09-16 14:08:21,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-16 14:08:21,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:08:21,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-09-16 14:08:21,642 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:08:21,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:08:21,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1379963486, now seen corresponding path program 1 times [2020-09-16 14:08:21,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:08:21,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856116825] [2020-09-16 14:08:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:08:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:08:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:08:21,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856116825] [2020-09-16 14:08:21,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:08:21,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 14:08:21,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668384102] [2020-09-16 14:08:21,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-16 14:08:21,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:08:21,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-16 14:08:21,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-16 14:08:21,973 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 2 states. [2020-09-16 14:08:22,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:08:22,011 INFO L93 Difference]: Finished difference Result 197 states and 454 transitions. [2020-09-16 14:08:22,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-16 14:08:22,013 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-09-16 14:08:22,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:08:22,031 INFO L225 Difference]: With dead ends: 197 [2020-09-16 14:08:22,031 INFO L226 Difference]: Without dead ends: 174 [2020-09-16 14:08:22,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-16 14:08:22,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-09-16 14:08:22,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-09-16 14:08:22,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-16 14:08:22,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 406 transitions. [2020-09-16 14:08:22,099 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 406 transitions. Word has length 6 [2020-09-16 14:08:22,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:08:22,100 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 406 transitions. [2020-09-16 14:08:22,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-16 14:08:22,100 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 406 transitions. [2020-09-16 14:08:22,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-16 14:08:22,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:08:22,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:08:22,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 14:08:22,102 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:08:22,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:08:22,103 INFO L82 PathProgramCache]: Analyzing trace with hash 170777462, now seen corresponding path program 1 times [2020-09-16 14:08:22,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:08:22,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783134737] [2020-09-16 14:08:22,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:08:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:08:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:08:22,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783134737] [2020-09-16 14:08:22,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:08:22,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 14:08:22,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730343651] [2020-09-16 14:08:22,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 14:08:22,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:08:22,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 14:08:22,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:08:22,196 INFO L87 Difference]: Start difference. First operand 174 states and 406 transitions. Second operand 3 states. [2020-09-16 14:08:22,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:08:22,238 INFO L93 Difference]: Finished difference Result 189 states and 416 transitions. [2020-09-16 14:08:22,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 14:08:22,239 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-09-16 14:08:22,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:08:22,242 INFO L225 Difference]: With dead ends: 189 [2020-09-16 14:08:22,242 INFO L226 Difference]: Without dead ends: 154 [2020-09-16 14:08:22,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:08:22,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-16 14:08:22,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2020-09-16 14:08:22,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-16 14:08:22,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 317 transitions. [2020-09-16 14:08:22,264 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 317 transitions. Word has length 7 [2020-09-16 14:08:22,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:08:22,265 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 317 transitions. [2020-09-16 14:08:22,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 14:08:22,265 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 317 transitions. [2020-09-16 14:08:22,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 14:08:22,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:08:22,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:08:22,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 14:08:22,268 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:08:22,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:08:22,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1618546552, now seen corresponding path program 1 times [2020-09-16 14:08:22,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:08:22,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704862617] [2020-09-16 14:08:22,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:08:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:08:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:08:22,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704862617] [2020-09-16 14:08:22,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:08:22,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 14:08:22,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61564644] [2020-09-16 14:08:22,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 14:08:22,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:08:22,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 14:08:22,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:08:22,358 INFO L87 Difference]: Start difference. First operand 140 states and 317 transitions. Second operand 3 states. [2020-09-16 14:08:22,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:08:22,388 INFO L93 Difference]: Finished difference Result 135 states and 290 transitions. [2020-09-16 14:08:22,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 14:08:22,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-16 14:08:22,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:08:22,391 INFO L225 Difference]: With dead ends: 135 [2020-09-16 14:08:22,391 INFO L226 Difference]: Without dead ends: 96 [2020-09-16 14:08:22,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:08:22,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-16 14:08:22,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-09-16 14:08:22,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-16 14:08:22,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 204 transitions. [2020-09-16 14:08:22,402 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 204 transitions. Word has length 9 [2020-09-16 14:08:22,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:08:22,404 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 204 transitions. [2020-09-16 14:08:22,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 14:08:22,404 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 204 transitions. [2020-09-16 14:08:22,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-16 14:08:22,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:08:22,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:08:22,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 14:08:22,407 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:08:22,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:08:22,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1612301587, now seen corresponding path program 1 times [2020-09-16 14:08:22,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:08:22,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506388452] [2020-09-16 14:08:22,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:08:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:08:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:08:22,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506388452] [2020-09-16 14:08:22,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:08:22,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 14:08:22,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549225760] [2020-09-16 14:08:22,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 14:08:22,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:08:22,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 14:08:22,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-16 14:08:22,493 INFO L87 Difference]: Start difference. First operand 96 states and 204 transitions. Second operand 4 states. [2020-09-16 14:08:22,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:08:22,523 INFO L93 Difference]: Finished difference Result 106 states and 227 transitions. [2020-09-16 14:08:22,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 14:08:22,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-16 14:08:22,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:08:22,525 INFO L225 Difference]: With dead ends: 106 [2020-09-16 14:08:22,525 INFO L226 Difference]: Without dead ends: 82 [2020-09-16 14:08:22,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-16 14:08:22,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-16 14:08:22,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-09-16 14:08:22,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-16 14:08:22,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 160 transitions. [2020-09-16 14:08:22,534 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 160 transitions. Word has length 13 [2020-09-16 14:08:22,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:08:22,534 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 160 transitions. [2020-09-16 14:08:22,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 14:08:22,535 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 160 transitions. [2020-09-16 14:08:22,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-16 14:08:22,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:08:22,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:08:22,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 14:08:22,537 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:08:22,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:08:22,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1894970123, now seen corresponding path program 2 times [2020-09-16 14:08:22,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:08:22,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944799651] [2020-09-16 14:08:22,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:08:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:08:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:08:22,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944799651] [2020-09-16 14:08:22,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:08:22,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 14:08:22,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827736810] [2020-09-16 14:08:22,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 14:08:22,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:08:22,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 14:08:22,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-16 14:08:22,613 INFO L87 Difference]: Start difference. First operand 82 states and 160 transitions. Second operand 4 states. [2020-09-16 14:08:22,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:08:22,629 INFO L93 Difference]: Finished difference Result 36 states and 77 transitions. [2020-09-16 14:08:22,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 14:08:22,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-16 14:08:22,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:08:22,630 INFO L225 Difference]: With dead ends: 36 [2020-09-16 14:08:22,630 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 14:08:22,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-16 14:08:22,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 14:08:22,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 14:08:22,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 14:08:22,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 14:08:22,633 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-09-16 14:08:22,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:08:22,633 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 14:08:22,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 14:08:22,633 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 14:08:22,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 14:08:22,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 14:08:22,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 02:08:22 BasicIcfg [2020-09-16 14:08:22,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 14:08:22,646 INFO L168 Benchmark]: Toolchain (without parser) took 3976.23 ms. Allocated memory was 138.4 MB in the beginning and 233.3 MB in the end (delta: 94.9 MB). Free memory was 99.0 MB in the beginning and 79.6 MB in the end (delta: 19.3 MB). Peak memory consumption was 114.2 MB. Max. memory is 7.1 GB. [2020-09-16 14:08:22,648 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-16 14:08:22,651 INFO L168 Benchmark]: CACSL2BoogieTranslator took 864.35 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 98.3 MB in the beginning and 163.4 MB in the end (delta: -65.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-09-16 14:08:22,658 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.68 ms. Allocated memory is still 202.4 MB. Free memory was 163.4 MB in the beginning and 161.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-16 14:08:22,658 INFO L168 Benchmark]: Boogie Preprocessor took 74.19 ms. Allocated memory is still 202.4 MB. Free memory was 161.3 MB in the beginning and 159.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-16 14:08:22,659 INFO L168 Benchmark]: RCFGBuilder took 462.61 ms. Allocated memory is still 202.4 MB. Free memory was 159.8 MB in the beginning and 139.5 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-09-16 14:08:22,661 INFO L168 Benchmark]: TraceAbstraction took 2458.87 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 139.5 MB in the beginning and 79.6 MB in the end (delta: 59.9 MB). Peak memory consumption was 90.8 MB. Max. memory is 7.1 GB. [2020-09-16 14:08:22,671 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 138.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 864.35 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 98.3 MB in the beginning and 163.4 MB in the end (delta: -65.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 103.68 ms. Allocated memory is still 202.4 MB. Free memory was 163.4 MB in the beginning and 161.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.19 ms. Allocated memory is still 202.4 MB. Free memory was 161.3 MB in the beginning and 159.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.61 ms. Allocated memory is still 202.4 MB. Free memory was 159.8 MB in the beginning and 139.5 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2458.87 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 139.5 MB in the beginning and 79.6 MB in the end (delta: 59.9 MB). Peak memory consumption was 90.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.1s, 61 ProgramPointsBefore, 34 ProgramPointsAfterwards, 62 TransitionsBefore, 34 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 330 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 1396 CheckedPairsTotal, 33 TotalNumberOfCompositions - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 139 SDtfs, 60 SDslu, 60 SDs, 0 SdLazy, 33 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred 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, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 801 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...