/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 16:42:43,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 16:42:43,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 16:42:43,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 16:42:43,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 16:42:43,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 16:42:43,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 16:42:43,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 16:42:43,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 16:42:43,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 16:42:43,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 16:42:43,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 16:42:43,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 16:42:43,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 16:42:43,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 16:42:43,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 16:42:43,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 16:42:43,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 16:42:43,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 16:42:43,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 16:42:43,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 16:42:43,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 16:42:43,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 16:42:43,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 16:42:43,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 16:42:43,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 16:42:43,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 16:42:43,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 16:42:43,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 16:42:43,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 16:42:43,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 16:42:43,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 16:42:43,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 16:42:43,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 16:42:43,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 16:42:43,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 16:42:43,760 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 [2020-10-15 16:42:43,782 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 16:42:43,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 16:42:43,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 16:42:43,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 16:42:43,783 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 16:42:43,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 16:42:43,784 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 16:42:43,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 16:42:43,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 16:42:43,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 16:42:43,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 16:42:43,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 16:42:43,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 16:42:43,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 16:42:43,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 16:42:43,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 16:42:43,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 16:42:43,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 16:42:43,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 16:42:43,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 16:42:43,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 16:42:43,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 16:42:43,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 16:42:43,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 16:42:43,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 16:42:43,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 16:42:43,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 16:42:43,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 16:42:43,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 16:42:43,788 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 16:42:44,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 16:42:44,077 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 16:42:44,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 16:42:44,083 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 16:42:44,083 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 16:42:44,084 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2020-10-15 16:42:44,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea7f37572/9b6a479f95e74c9f89766d970cf60c18/FLAG90e901f2f [2020-10-15 16:42:44,668 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 16:42:44,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2020-10-15 16:42:44,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea7f37572/9b6a479f95e74c9f89766d970cf60c18/FLAG90e901f2f [2020-10-15 16:42:44,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea7f37572/9b6a479f95e74c9f89766d970cf60c18 [2020-10-15 16:42:44,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 16:42:44,948 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 16:42:44,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 16:42:44,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 16:42:44,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 16:42:44,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:42:44" (1/1) ... [2020-10-15 16:42:44,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29841318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:44, skipping insertion in model container [2020-10-15 16:42:44,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:42:44" (1/1) ... [2020-10-15 16:42:44,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 16:42:45,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 16:42:45,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 16:42:45,477 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 16:42:45,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 16:42:45,603 INFO L208 MainTranslator]: Completed translation [2020-10-15 16:42:45,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:45 WrapperNode [2020-10-15 16:42:45,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 16:42:45,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 16:42:45,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 16:42:45,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 16:42:45,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:45" (1/1) ... [2020-10-15 16:42:45,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:45" (1/1) ... [2020-10-15 16:42:45,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 16:42:45,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 16:42:45,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 16:42:45,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 16:42:45,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:45" (1/1) ... [2020-10-15 16:42:45,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:45" (1/1) ... [2020-10-15 16:42:45,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:45" (1/1) ... [2020-10-15 16:42:45,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:45" (1/1) ... [2020-10-15 16:42:45,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:45" (1/1) ... [2020-10-15 16:42:45,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:45" (1/1) ... [2020-10-15 16:42:45,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:45" (1/1) ... [2020-10-15 16:42:45,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 16:42:45,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 16:42:45,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 16:42:45,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 16:42:45,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 16:42:45,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 16:42:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-15 16:42:45,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-15 16:42:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-15 16:42:45,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-15 16:42:45,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 16:42:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 16:42:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 16:42:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 16:42:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 16:42:45,750 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 16:42:46,101 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 16:42:46,102 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-15 16:42:46,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:42:46 BoogieIcfgContainer [2020-10-15 16:42:46,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 16:42:46,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 16:42:46,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 16:42:46,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 16:42:46,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:42:44" (1/3) ... [2020-10-15 16:42:46,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7624735e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:42:46, skipping insertion in model container [2020-10-15 16:42:46,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:42:45" (2/3) ... [2020-10-15 16:42:46,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7624735e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:42:46, skipping insertion in model container [2020-10-15 16:42:46,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:42:46" (3/3) ... [2020-10-15 16:42:46,112 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2020-10-15 16:42:46,124 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 16:42:46,124 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 16:42:46,131 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-15 16:42:46,132 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 16:42:46,165 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,165 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,165 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,165 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,167 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,167 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,168 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,168 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,170 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,170 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,173 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,174 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,174 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,174 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,180 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,180 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,180 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,181 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 16:42:46,203 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-15 16:42:46,233 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 16:42:46,233 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 16:42:46,233 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 16:42:46,234 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 16:42:46,234 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 16:42:46,234 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 16:42:46,235 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 16:42:46,235 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 16:42:46,250 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 16:42:46,252 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 82 transitions, 186 flow [2020-10-15 16:42:46,254 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 82 transitions, 186 flow [2020-10-15 16:42:46,257 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 82 transitions, 186 flow [2020-10-15 16:42:46,303 INFO L129 PetriNetUnfolder]: 14/82 cut-off events. [2020-10-15 16:42:46,303 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-15 16:42:46,309 INFO L80 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 82 events. 14/82 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2020-10-15 16:42:46,313 INFO L117 LiptonReduction]: Number of co-enabled transitions 1428 [2020-10-15 16:42:47,318 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-15 16:42:47,661 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-10-15 16:42:47,753 INFO L132 LiptonReduction]: Checked pairs total: 5300 [2020-10-15 16:42:47,753 INFO L134 LiptonReduction]: Total number of compositions: 51 [2020-10-15 16:42:47,760 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 44 transitions, 110 flow [2020-10-15 16:42:47,788 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 335 states. [2020-10-15 16:42:47,790 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-10-15 16:42:47,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-15 16:42:47,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:42:47,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-15 16:42:47,798 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 16:42:47,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:42:47,804 INFO L82 PathProgramCache]: Analyzing trace with hash 328460490, now seen corresponding path program 1 times [2020-10-15 16:42:47,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:42:47,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330147567] [2020-10-15 16:42:47,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:42:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:42:47,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 16:42:47,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330147567] [2020-10-15 16:42:47,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 16:42:47,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 16:42:47,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064816580] [2020-10-15 16:42:47,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-15 16:42:47,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:42:48,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-15 16:42:48,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 16:42:48,005 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 2 states. [2020-10-15 16:42:48,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:42:48,037 INFO L93 Difference]: Finished difference Result 335 states and 891 transitions. [2020-10-15 16:42:48,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-15 16:42:48,038 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-10-15 16:42:48,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:42:48,055 INFO L225 Difference]: With dead ends: 335 [2020-10-15 16:42:48,055 INFO L226 Difference]: Without dead ends: 296 [2020-10-15 16:42:48,057 INFO L677 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 [2020-10-15 16:42:48,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-15 16:42:48,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2020-10-15 16:42:48,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-10-15 16:42:48,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 806 transitions. [2020-10-15 16:42:48,130 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 806 transitions. Word has length 5 [2020-10-15 16:42:48,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:42:48,131 INFO L481 AbstractCegarLoop]: Abstraction has 296 states and 806 transitions. [2020-10-15 16:42:48,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-15 16:42:48,132 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 806 transitions. [2020-10-15 16:42:48,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-15 16:42:48,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:42:48,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-15 16:42:48,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 16:42:48,133 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 16:42:48,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:42:48,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1592301590, now seen corresponding path program 1 times [2020-10-15 16:42:48,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:42:48,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466501992] [2020-10-15 16:42:48,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:42:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:42:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 16:42:48,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466501992] [2020-10-15 16:42:48,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 16:42:48,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 16:42:48,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135337531] [2020-10-15 16:42:48,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 16:42:48,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:42:48,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 16:42:48,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 16:42:48,221 INFO L87 Difference]: Start difference. First operand 296 states and 806 transitions. Second operand 3 states. [2020-10-15 16:42:48,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:42:48,251 INFO L93 Difference]: Finished difference Result 313 states and 813 transitions. [2020-10-15 16:42:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 16:42:48,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-15 16:42:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:42:48,255 INFO L225 Difference]: With dead ends: 313 [2020-10-15 16:42:48,255 INFO L226 Difference]: Without dead ends: 250 [2020-10-15 16:42:48,256 INFO L677 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 [2020-10-15 16:42:48,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-15 16:42:48,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 232. [2020-10-15 16:42:48,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-15 16:42:48,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 621 transitions. [2020-10-15 16:42:48,281 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 621 transitions. Word has length 6 [2020-10-15 16:42:48,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:42:48,281 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 621 transitions. [2020-10-15 16:42:48,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 16:42:48,281 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 621 transitions. [2020-10-15 16:42:48,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 16:42:48,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:42:48,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 16:42:48,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 16:42:48,283 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 16:42:48,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:42:48,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1271601265, now seen corresponding path program 1 times [2020-10-15 16:42:48,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:42:48,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612315222] [2020-10-15 16:42:48,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:42:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:42:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 16:42:48,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612315222] [2020-10-15 16:42:48,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 16:42:48,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 16:42:48,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898455532] [2020-10-15 16:42:48,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 16:42:48,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:42:48,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 16:42:48,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 16:42:48,342 INFO L87 Difference]: Start difference. First operand 232 states and 621 transitions. Second operand 3 states. [2020-10-15 16:42:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:42:48,362 INFO L93 Difference]: Finished difference Result 225 states and 583 transitions. [2020-10-15 16:42:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 16:42:48,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-15 16:42:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:42:48,365 INFO L225 Difference]: With dead ends: 225 [2020-10-15 16:42:48,365 INFO L226 Difference]: Without dead ends: 156 [2020-10-15 16:42:48,366 INFO L677 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 [2020-10-15 16:42:48,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-15 16:42:48,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2020-10-15 16:42:48,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-15 16:42:48,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 408 transitions. [2020-10-15 16:42:48,380 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 408 transitions. Word has length 8 [2020-10-15 16:42:48,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:42:48,380 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 408 transitions. [2020-10-15 16:42:48,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 16:42:48,381 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 408 transitions. [2020-10-15 16:42:48,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 16:42:48,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:42:48,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 16:42:48,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 16:42:48,383 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 16:42:48,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:42:48,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1709095427, now seen corresponding path program 1 times [2020-10-15 16:42:48,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:42:48,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262972248] [2020-10-15 16:42:48,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:42:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:42:48,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 16:42:48,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262972248] [2020-10-15 16:42:48,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 16:42:48,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 16:42:48,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116086983] [2020-10-15 16:42:48,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 16:42:48,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:42:48,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 16:42:48,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 16:42:48,454 INFO L87 Difference]: Start difference. First operand 156 states and 408 transitions. Second operand 3 states. [2020-10-15 16:42:48,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:42:48,475 INFO L93 Difference]: Finished difference Result 156 states and 400 transitions. [2020-10-15 16:42:48,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 16:42:48,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-15 16:42:48,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:42:48,477 INFO L225 Difference]: With dead ends: 156 [2020-10-15 16:42:48,477 INFO L226 Difference]: Without dead ends: 132 [2020-10-15 16:42:48,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 16:42:48,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-15 16:42:48,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-10-15 16:42:48,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-15 16:42:48,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 334 transitions. [2020-10-15 16:42:48,487 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 334 transitions. Word has length 11 [2020-10-15 16:42:48,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:42:48,487 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 334 transitions. [2020-10-15 16:42:48,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 16:42:48,488 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 334 transitions. [2020-10-15 16:42:48,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 16:42:48,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 16:42:48,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 16:42:48,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 16:42:48,490 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 16:42:48,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 16:42:48,491 INFO L82 PathProgramCache]: Analyzing trace with hash 662539332, now seen corresponding path program 1 times [2020-10-15 16:42:48,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 16:42:48,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915808273] [2020-10-15 16:42:48,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 16:42:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 16:42:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 16:42:48,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915808273] [2020-10-15 16:42:48,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 16:42:48,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 16:42:48,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379333320] [2020-10-15 16:42:48,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 16:42:48,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 16:42:48,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 16:42:48,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 16:42:48,525 INFO L87 Difference]: Start difference. First operand 132 states and 334 transitions. Second operand 3 states. [2020-10-15 16:42:48,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 16:42:48,539 INFO L93 Difference]: Finished difference Result 82 states and 245 transitions. [2020-10-15 16:42:48,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 16:42:48,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-15 16:42:48,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 16:42:48,540 INFO L225 Difference]: With dead ends: 82 [2020-10-15 16:42:48,540 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 16:42:48,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 16:42:48,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 16:42:48,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 16:42:48,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 16:42:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 16:42:48,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-15 16:42:48,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 16:42:48,542 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 16:42:48,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 16:42:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 16:42:48,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 16:42:48,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 16:42:48,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 04:42:48 BasicIcfg [2020-10-15 16:42:48,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 16:42:48,549 INFO L168 Benchmark]: Toolchain (without parser) took 3600.90 ms. Allocated memory was 252.7 MB in the beginning and 358.6 MB in the end (delta: 105.9 MB). Free memory was 207.0 MB in the beginning and 164.3 MB in the end (delta: 42.8 MB). Peak memory consumption was 148.7 MB. Max. memory is 14.2 GB. [2020-10-15 16:42:48,549 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 16:42:48,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 655.84 ms. Allocated memory was 252.7 MB in the beginning and 318.2 MB in the end (delta: 65.5 MB). Free memory was 207.0 MB in the beginning and 274.2 MB in the end (delta: -67.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 14.2 GB. [2020-10-15 16:42:48,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.85 ms. Allocated memory is still 318.2 MB. Free memory was 274.2 MB in the beginning and 271.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 16:42:48,555 INFO L168 Benchmark]: Boogie Preprocessor took 29.46 ms. Allocated memory is still 318.2 MB. Free memory was 271.7 MB in the beginning and 269.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 16:42:48,556 INFO L168 Benchmark]: RCFGBuilder took 420.96 ms. Allocated memory is still 318.2 MB. Free memory was 269.2 MB in the beginning and 247.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-15 16:42:48,557 INFO L168 Benchmark]: TraceAbstraction took 2441.74 ms. Allocated memory was 318.2 MB in the beginning and 358.6 MB in the end (delta: 40.4 MB). Free memory was 247.4 MB in the beginning and 164.3 MB in the end (delta: 83.1 MB). Peak memory consumption was 123.5 MB. Max. memory is 14.2 GB. [2020-10-15 16:42:48,561 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 655.84 ms. Allocated memory was 252.7 MB in the beginning and 318.2 MB in the end (delta: 65.5 MB). Free memory was 207.0 MB in the beginning and 274.2 MB in the end (delta: -67.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.85 ms. Allocated memory is still 318.2 MB. Free memory was 274.2 MB in the beginning and 271.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 29.46 ms. Allocated memory is still 318.2 MB. Free memory was 271.7 MB in the beginning and 269.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 420.96 ms. Allocated memory is still 318.2 MB. Free memory was 269.2 MB in the beginning and 247.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2441.74 ms. Allocated memory was 318.2 MB in the beginning and 358.6 MB in the end (delta: 40.4 MB). Free memory was 247.4 MB in the beginning and 164.3 MB in the end (delta: 83.1 MB). Peak memory consumption was 123.5 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 854 VarBasedMoverChecksPositive, 55 VarBasedMoverChecksNegative, 21 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 315 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 74 PlacesBefore, 40 PlacesAfterwards, 82 TransitionsBefore, 44 TransitionsAfterwards, 1428 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 5 ConcurrentYvCompositions, 4 ChoiceCompositions, 51 TotalNumberOfCompositions, 5300 MoverChecksTotal - PositiveResult [Line: 705]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 690]: 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, 68 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 197 SDtfs, 79 SDslu, 68 SDs, 0 SdLazy, 28 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=335occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 514 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...