/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-ext/16_peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:46:22,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:46:22,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:46:22,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:46:22,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:46:22,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:46:22,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:46:22,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:46:22,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:46:22,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:46:22,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:46:22,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:46:22,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:46:22,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:46:22,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:46:22,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:46:22,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:46:22,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:46:22,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:46:22,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:46:22,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:46:22,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:46:22,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:46:22,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:46:22,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:46:22,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:46:22,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:46:22,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:46:22,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:46:22,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:46:22,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:46:22,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:46:22,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:46:22,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:46:22,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:46:22,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:46:22,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:46:22,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:46:22,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:46:22,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:46:22,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:46:22,884 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-16 11:46:22,906 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:46:22,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:46:22,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:46:22,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:46:22,907 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:46:22,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:46:22,908 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:46:22,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:46:22,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:46:22,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:46:22,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:46:22,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:46:22,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:46:22,909 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:46:22,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:46:22,909 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:46:22,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:46:22,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:46:22,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:46:22,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:46:22,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:46:22,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:46:22,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:46:22,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 11:46:22,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:46:22,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:46:22,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:46:22,912 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 11:46:22,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:46:23,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:46:23,240 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:46:23,243 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:46:23,245 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:46:23,245 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:46:23,246 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-10-16 11:46:23,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccb4f3855/81c92dd1888c4092b19da06480aaac70/FLAG8188c7d0b [2020-10-16 11:46:23,807 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:46:23,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/16_peterson.i [2020-10-16 11:46:23,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccb4f3855/81c92dd1888c4092b19da06480aaac70/FLAG8188c7d0b [2020-10-16 11:46:24,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccb4f3855/81c92dd1888c4092b19da06480aaac70 [2020-10-16 11:46:24,145 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:46:24,146 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:46:24,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:46:24,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:46:24,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:46:24,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:46:24" (1/1) ... [2020-10-16 11:46:24,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45090060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:24, skipping insertion in model container [2020-10-16 11:46:24,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:46:24" (1/1) ... [2020-10-16 11:46:24,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:46:24,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:46:24,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:46:24,676 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:46:24,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:46:24,814 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:46:24,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:24 WrapperNode [2020-10-16 11:46:24,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:46:24,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:46:24,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:46:24,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:46:24,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:24" (1/1) ... [2020-10-16 11:46:24,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:24" (1/1) ... [2020-10-16 11:46:24,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:46:24,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:46:24,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:46:24,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:46:24,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:24" (1/1) ... [2020-10-16 11:46:24,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:24" (1/1) ... [2020-10-16 11:46:24,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:24" (1/1) ... [2020-10-16 11:46:24,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:24" (1/1) ... [2020-10-16 11:46:24,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:24" (1/1) ... [2020-10-16 11:46:24,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:24" (1/1) ... [2020-10-16 11:46:24,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:24" (1/1) ... [2020-10-16 11:46:24,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:46:24,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:46:24,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:46:24,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:46:24,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:46:24,954 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 11:46:24,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 11:46:24,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:46:24,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:46:24,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:46:24,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:46:24,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:46:24,959 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:46:25,235 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:46:25,235 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:46:25,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:46:25 BoogieIcfgContainer [2020-10-16 11:46:25,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:46:25,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:46:25,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:46:25,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:46:25,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:46:24" (1/3) ... [2020-10-16 11:46:25,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b03180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:46:25, skipping insertion in model container [2020-10-16 11:46:25,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:24" (2/3) ... [2020-10-16 11:46:25,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b03180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:46:25, skipping insertion in model container [2020-10-16 11:46:25,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:46:25" (3/3) ... [2020-10-16 11:46:25,245 INFO L111 eAbstractionObserver]: Analyzing ICFG 16_peterson.i [2020-10-16 11:46:25,258 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:46:25,258 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:46:25,266 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 11:46:25,267 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:46:25,291 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:25,291 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:25,292 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:25,292 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:25,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:25,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:25,297 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:25,297 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:25,297 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:25,298 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:25,303 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:46:25,316 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:46:25,342 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:46:25,343 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:46:25,343 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 11:46:25,343 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:46:25,343 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:46:25,343 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:46:25,344 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:46:25,344 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:46:25,354 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 11:46:25,355 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 51 transitions, 107 flow [2020-10-16 11:46:25,358 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 51 transitions, 107 flow [2020-10-16 11:46:25,359 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 107 flow [2020-10-16 11:46:25,393 INFO L129 PetriNetUnfolder]: 6/50 cut-off events. [2020-10-16 11:46:25,393 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:46:25,398 INFO L80 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 6/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2020-10-16 11:46:25,400 INFO L117 LiptonReduction]: Number of co-enabled transitions 672 [2020-10-16 11:46:26,063 INFO L132 LiptonReduction]: Checked pairs total: 1328 [2020-10-16 11:46:26,063 INFO L134 LiptonReduction]: Total number of compositions: 36 [2020-10-16 11:46:26,070 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 23 transitions, 51 flow [2020-10-16 11:46:26,083 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-10-16 11:46:26,086 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-16 11:46:26,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 11:46:26,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:26,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 11:46:26,094 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:26,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:26,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1942834628, now seen corresponding path program 1 times [2020-10-16 11:46:26,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:26,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755415746] [2020-10-16 11:46:26,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:46:26,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755415746] [2020-10-16 11:46:26,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:26,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:46:26,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442485227] [2020-10-16 11:46:26,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 11:46:26,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:26,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 11:46:26,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 11:46:26,285 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2020-10-16 11:46:26,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:26,299 INFO L93 Difference]: Finished difference Result 74 states and 146 transitions. [2020-10-16 11:46:26,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 11:46:26,301 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-16 11:46:26,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:26,311 INFO L225 Difference]: With dead ends: 74 [2020-10-16 11:46:26,312 INFO L226 Difference]: Without dead ends: 68 [2020-10-16 11:46:26,313 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 [2020-10-16 11:46:26,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-16 11:46:26,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-16 11:46:26,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-16 11:46:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 134 transitions. [2020-10-16 11:46:26,350 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 134 transitions. Word has length 6 [2020-10-16 11:46:26,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:26,351 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 134 transitions. [2020-10-16 11:46:26,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 11:46:26,351 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 134 transitions. [2020-10-16 11:46:26,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 11:46:26,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:26,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:46:26,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:46:26,353 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:26,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:26,353 INFO L82 PathProgramCache]: Analyzing trace with hash 98318518, now seen corresponding path program 1 times [2020-10-16 11:46:26,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:26,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680597505] [2020-10-16 11:46:26,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:26,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:46:26,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680597505] [2020-10-16 11:46:26,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:26,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:46:26,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201419178] [2020-10-16 11:46:26,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:46:26,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:26,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:46:26,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:26,419 INFO L87 Difference]: Start difference. First operand 68 states and 134 transitions. Second operand 3 states. [2020-10-16 11:46:26,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:26,447 INFO L93 Difference]: Finished difference Result 73 states and 134 transitions. [2020-10-16 11:46:26,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:46:26,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-16 11:46:26,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:26,449 INFO L225 Difference]: With dead ends: 73 [2020-10-16 11:46:26,449 INFO L226 Difference]: Without dead ends: 58 [2020-10-16 11:46:26,450 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 [2020-10-16 11:46:26,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-16 11:46:26,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-10-16 11:46:26,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-16 11:46:26,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 101 transitions. [2020-10-16 11:46:26,460 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 101 transitions. Word has length 7 [2020-10-16 11:46:26,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:26,460 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 101 transitions. [2020-10-16 11:46:26,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:46:26,461 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 101 transitions. [2020-10-16 11:46:26,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-16 11:46:26,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:26,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:46:26,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:46:26,462 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:26,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:26,463 INFO L82 PathProgramCache]: Analyzing trace with hash 114699826, now seen corresponding path program 1 times [2020-10-16 11:46:26,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:26,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674405621] [2020-10-16 11:46:26,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:46:26,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674405621] [2020-10-16 11:46:26,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:26,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:46:26,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959402909] [2020-10-16 11:46:26,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:46:26,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:26,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:46:26,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:26,537 INFO L87 Difference]: Start difference. First operand 54 states and 101 transitions. Second operand 3 states. [2020-10-16 11:46:26,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:26,563 INFO L93 Difference]: Finished difference Result 48 states and 85 transitions. [2020-10-16 11:46:26,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:46:26,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-16 11:46:26,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:26,566 INFO L225 Difference]: With dead ends: 48 [2020-10-16 11:46:26,567 INFO L226 Difference]: Without dead ends: 38 [2020-10-16 11:46:26,569 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 [2020-10-16 11:46:26,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-16 11:46:26,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-16 11:46:26,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-16 11:46:26,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 66 transitions. [2020-10-16 11:46:26,577 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 66 transitions. Word has length 7 [2020-10-16 11:46:26,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:26,579 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 66 transitions. [2020-10-16 11:46:26,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:46:26,579 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 66 transitions. [2020-10-16 11:46:26,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:46:26,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:26,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:46:26,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:46:26,582 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:26,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:26,582 INFO L82 PathProgramCache]: Analyzing trace with hash -480213144, now seen corresponding path program 1 times [2020-10-16 11:46:26,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:26,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978286008] [2020-10-16 11:46:26,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:26,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:46:26,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978286008] [2020-10-16 11:46:26,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:26,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:46:26,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614033806] [2020-10-16 11:46:26,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:46:26,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:26,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:46:26,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:46:26,678 INFO L87 Difference]: Start difference. First operand 38 states and 66 transitions. Second operand 4 states. [2020-10-16 11:46:26,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:26,711 INFO L93 Difference]: Finished difference Result 43 states and 75 transitions. [2020-10-16 11:46:26,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:46:26,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 11:46:26,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:26,713 INFO L225 Difference]: With dead ends: 43 [2020-10-16 11:46:26,713 INFO L226 Difference]: Without dead ends: 34 [2020-10-16 11:46:26,714 INFO L677 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 [2020-10-16 11:46:26,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-16 11:46:26,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-16 11:46:26,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-16 11:46:26,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 53 transitions. [2020-10-16 11:46:26,725 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 53 transitions. Word has length 11 [2020-10-16 11:46:26,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:26,726 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 53 transitions. [2020-10-16 11:46:26,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:46:26,726 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 53 transitions. [2020-10-16 11:46:26,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:46:26,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:26,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:46:26,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:46:26,729 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:26,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:26,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1657399704, now seen corresponding path program 2 times [2020-10-16 11:46:26,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:26,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264387669] [2020-10-16 11:46:26,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:46:26,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264387669] [2020-10-16 11:46:26,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:26,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:46:26,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677035518] [2020-10-16 11:46:26,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:46:26,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:26,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:46:26,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:46:26,783 INFO L87 Difference]: Start difference. First operand 34 states and 53 transitions. Second operand 4 states. [2020-10-16 11:46:26,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:26,799 INFO L93 Difference]: Finished difference Result 17 states and 29 transitions. [2020-10-16 11:46:26,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:46:26,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 11:46:26,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:26,801 INFO L225 Difference]: With dead ends: 17 [2020-10-16 11:46:26,801 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:46:26,801 INFO L677 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 [2020-10-16 11:46:26,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:46:26,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:46:26,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:46:26,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:46:26,802 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-16 11:46:26,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:26,803 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:46:26,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:46:26,803 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:46:26,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:46:26,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:46:26,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:46:26 BasicIcfg [2020-10-16 11:46:26,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:46:26,810 INFO L168 Benchmark]: Toolchain (without parser) took 2662.64 ms. Allocated memory was 145.2 MB in the beginning and 230.7 MB in the end (delta: 85.5 MB). Free memory was 99.7 MB in the beginning and 116.3 MB in the end (delta: -16.6 MB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:26,810 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 11:46:26,811 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.39 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 99.3 MB in the beginning and 158.7 MB in the end (delta: -59.4 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:26,812 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.09 ms. Allocated memory is still 200.8 MB. Free memory was 158.7 MB in the beginning and 156.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:26,813 INFO L168 Benchmark]: Boogie Preprocessor took 26.17 ms. Allocated memory is still 200.8 MB. Free memory was 156.6 MB in the beginning and 155.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:26,814 INFO L168 Benchmark]: RCFGBuilder took 350.42 ms. Allocated memory is still 200.8 MB. Free memory was 155.2 MB in the beginning and 136.0 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:26,815 INFO L168 Benchmark]: TraceAbstraction took 1568.58 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 136.0 MB in the beginning and 117.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:26,819 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 668.39 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 99.3 MB in the beginning and 158.7 MB in the end (delta: -59.4 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.09 ms. Allocated memory is still 200.8 MB. Free memory was 158.7 MB in the beginning and 156.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.17 ms. Allocated memory is still 200.8 MB. Free memory was 156.6 MB in the beginning and 155.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 350.42 ms. Allocated memory is still 200.8 MB. Free memory was 155.2 MB in the beginning and 136.0 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1568.58 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 136.0 MB in the beginning and 117.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 346 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 54 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.7s, 49 PlacesBefore, 22 PlacesAfterwards, 51 TransitionsBefore, 23 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 4 FixpointIterations, 10 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 36 TotalNumberOfCompositions, 1328 MoverChecksTotal - PositiveResult [Line: 681]: 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 2 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 95 SDtfs, 45 SDslu, 33 SDs, 0 SdLazy, 35 SolverSat, 8 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=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 521 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...