/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/20_lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:46:28,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:46:28,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:46:28,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:46:28,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:46:28,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:46:28,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:46:28,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:46:28,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:46:28,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:46:28,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:46:28,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:46:28,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:46:28,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:46:28,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:46:28,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:46:28,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:46:28,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:46:28,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:46:28,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:46:28,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:46:29,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:46:29,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:46:29,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:46:29,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:46:29,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:46:29,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:46:29,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:46:29,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:46:29,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:46:29,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:46:29,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:46:29,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:46:29,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:46:29,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:46:29,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:46:29,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:46:29,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:46:29,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:46:29,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:46:29,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:46:29,014 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 11:46:29,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:46:29,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:46:29,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:46:29,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:46:29,037 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:46:29,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:46:29,037 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:46:29,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:46:29,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:46:29,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:46:29,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:46:29,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:46:29,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:46:29,038 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:46:29,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:46:29,039 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:46:29,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:46:29,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:46:29,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:46:29,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:46:29,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:46:29,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:46:29,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:46:29,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 11:46:29,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:46:29,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:46:29,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:46:29,041 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 11:46:29,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:46:29,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:46:29,355 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:46:29,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:46:29,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:46:29,361 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:46:29,362 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-10-16 11:46:29,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f6c71a36/d1eda574aa3b40bcb75109a35262168e/FLAG75622d735 [2020-10-16 11:46:29,960 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:46:29,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-10-16 11:46:29,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f6c71a36/d1eda574aa3b40bcb75109a35262168e/FLAG75622d735 [2020-10-16 11:46:30,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f6c71a36/d1eda574aa3b40bcb75109a35262168e [2020-10-16 11:46:30,263 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:46:30,264 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:46:30,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:46:30,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:46:30,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:46:30,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:46:30" (1/1) ... [2020-10-16 11:46:30,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70cb212e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:30, skipping insertion in model container [2020-10-16 11:46:30,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:46:30" (1/1) ... [2020-10-16 11:46:30,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:46:30,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:46:30,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:46:30,723 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:46:30,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:46:30,868 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:46:30,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:30 WrapperNode [2020-10-16 11:46:30,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:46:30,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:46:30,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:46:30,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:46:30,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:30" (1/1) ... [2020-10-16 11:46:30,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:30" (1/1) ... [2020-10-16 11:46:30,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:46:30,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:46:30,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:46:30,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:46:30,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:30" (1/1) ... [2020-10-16 11:46:30,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:30" (1/1) ... [2020-10-16 11:46:30,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:30" (1/1) ... [2020-10-16 11:46:30,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:30" (1/1) ... [2020-10-16 11:46:30,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:30" (1/1) ... [2020-10-16 11:46:30,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:30" (1/1) ... [2020-10-16 11:46:30,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:30" (1/1) ... [2020-10-16 11:46:30,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:46:30,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:46:30,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:46:30,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:46:30,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:30" (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 11:46:31,024 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 11:46:31,024 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 11:46:31,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:46:31,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:46:31,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:46:31,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:46:31,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:46:31,026 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 11:46:31,344 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:46:31,344 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-16 11:46:31,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:46:31 BoogieIcfgContainer [2020-10-16 11:46:31,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:46:31,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:46:31,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:46:31,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:46:31,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:46:30" (1/3) ... [2020-10-16 11:46:31,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1374345c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:46:31, skipping insertion in model container [2020-10-16 11:46:31,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:46:30" (2/3) ... [2020-10-16 11:46:31,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1374345c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:46:31, skipping insertion in model container [2020-10-16 11:46:31,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:46:31" (3/3) ... [2020-10-16 11:46:31,364 INFO L111 eAbstractionObserver]: Analyzing ICFG 20_lamport.i [2020-10-16 11:46:31,390 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:46:31,391 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:46:31,400 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 11:46:31,402 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:46:31,443 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:31,443 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:31,444 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:31,444 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:31,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:31,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:31,457 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:31,457 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:31,457 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:31,458 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:46:31,465 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:46:31,477 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:46:31,494 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:46:31,494 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:46:31,494 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 11:46:31,495 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:46:31,495 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:46:31,495 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:46:31,495 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:46:31,495 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:46:31,508 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 11:46:31,508 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 92 transitions, 189 flow [2020-10-16 11:46:31,510 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 92 transitions, 189 flow [2020-10-16 11:46:31,512 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions, 189 flow [2020-10-16 11:46:31,561 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2020-10-16 11:46:31,562 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:46:31,570 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 91 events. 24/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 78. Up to 5 conditions per place. [2020-10-16 11:46:31,574 INFO L117 LiptonReduction]: Number of co-enabled transitions 2992 [2020-10-16 11:46:32,341 INFO L132 LiptonReduction]: Checked pairs total: 10306 [2020-10-16 11:46:32,341 INFO L134 LiptonReduction]: Total number of compositions: 48 [2020-10-16 11:46:32,348 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 53 transitions, 111 flow [2020-10-16 11:46:32,372 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 326 states. [2020-10-16 11:46:32,374 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states. [2020-10-16 11:46:32,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 11:46:32,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:32,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 11:46:32,382 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:32,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:32,388 INFO L82 PathProgramCache]: Analyzing trace with hash 12205615, now seen corresponding path program 1 times [2020-10-16 11:46:32,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:32,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946237571] [2020-10-16 11:46:32,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:32,539 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 11:46:32,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946237571] [2020-10-16 11:46:32,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:32,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:46:32,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996186811] [2020-10-16 11:46:32,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 11:46:32,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:32,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 11:46:32,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 11:46:32,563 INFO L87 Difference]: Start difference. First operand 326 states. Second operand 2 states. [2020-10-16 11:46:32,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:32,597 INFO L93 Difference]: Finished difference Result 326 states and 830 transitions. [2020-10-16 11:46:32,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 11:46:32,599 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-16 11:46:32,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:32,623 INFO L225 Difference]: With dead ends: 326 [2020-10-16 11:46:32,624 INFO L226 Difference]: Without dead ends: 317 [2020-10-16 11:46:32,625 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 11:46:32,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-16 11:46:32,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2020-10-16 11:46:32,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-16 11:46:32,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 812 transitions. [2020-10-16 11:46:32,692 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 812 transitions. Word has length 4 [2020-10-16 11:46:32,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:32,692 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 812 transitions. [2020-10-16 11:46:32,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 11:46:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 812 transitions. [2020-10-16 11:46:32,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:46:32,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:32,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:46:32,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:46:32,695 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:32,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:32,695 INFO L82 PathProgramCache]: Analyzing trace with hash -295132035, now seen corresponding path program 1 times [2020-10-16 11:46:32,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:32,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784526959] [2020-10-16 11:46:32,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:32,758 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 11:46:32,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784526959] [2020-10-16 11:46:32,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:32,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:46:32,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207922625] [2020-10-16 11:46:32,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:46:32,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:32,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:46:32,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:32,762 INFO L87 Difference]: Start difference. First operand 317 states and 812 transitions. Second operand 3 states. [2020-10-16 11:46:32,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:32,806 INFO L93 Difference]: Finished difference Result 315 states and 792 transitions. [2020-10-16 11:46:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:46:32,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 11:46:32,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:32,810 INFO L225 Difference]: With dead ends: 315 [2020-10-16 11:46:32,810 INFO L226 Difference]: Without dead ends: 273 [2020-10-16 11:46:32,811 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 11:46:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-16 11:46:32,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 267. [2020-10-16 11:46:32,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-16 11:46:32,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 687 transitions. [2020-10-16 11:46:32,832 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 687 transitions. Word has length 10 [2020-10-16 11:46:32,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:32,833 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 687 transitions. [2020-10-16 11:46:32,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:46:32,833 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 687 transitions. [2020-10-16 11:46:32,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:46:32,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:32,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:46:32,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:46:32,835 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:32,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:32,836 INFO L82 PathProgramCache]: Analyzing trace with hash -819868373, now seen corresponding path program 1 times [2020-10-16 11:46:32,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:32,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358105520] [2020-10-16 11:46:32,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:32,881 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 11:46:32,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358105520] [2020-10-16 11:46:32,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:32,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:46:32,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937310760] [2020-10-16 11:46:32,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:46:32,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:32,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:46:32,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:32,884 INFO L87 Difference]: Start difference. First operand 267 states and 687 transitions. Second operand 3 states. [2020-10-16 11:46:32,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:32,907 INFO L93 Difference]: Finished difference Result 255 states and 652 transitions. [2020-10-16 11:46:32,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:46:32,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 11:46:32,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:32,910 INFO L225 Difference]: With dead ends: 255 [2020-10-16 11:46:32,910 INFO L226 Difference]: Without dead ends: 213 [2020-10-16 11:46:32,911 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 11:46:32,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-16 11:46:32,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-10-16 11:46:32,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-16 11:46:32,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 554 transitions. [2020-10-16 11:46:32,925 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 554 transitions. Word has length 10 [2020-10-16 11:46:32,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:32,925 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 554 transitions. [2020-10-16 11:46:32,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:46:32,925 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 554 transitions. [2020-10-16 11:46:32,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:46:32,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:32,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:46:32,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:46:32,929 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:32,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:32,929 INFO L82 PathProgramCache]: Analyzing trace with hash 839349889, now seen corresponding path program 1 times [2020-10-16 11:46:32,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:32,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827810165] [2020-10-16 11:46:32,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:32,990 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 11:46:32,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827810165] [2020-10-16 11:46:32,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:32,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:46:32,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307472374] [2020-10-16 11:46:32,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:46:32,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:32,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:46:32,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:32,995 INFO L87 Difference]: Start difference. First operand 213 states and 554 transitions. Second operand 3 states. [2020-10-16 11:46:33,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:33,047 INFO L93 Difference]: Finished difference Result 311 states and 780 transitions. [2020-10-16 11:46:33,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:46:33,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 11:46:33,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:33,050 INFO L225 Difference]: With dead ends: 311 [2020-10-16 11:46:33,050 INFO L226 Difference]: Without dead ends: 238 [2020-10-16 11:46:33,051 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 [2020-10-16 11:46:33,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-16 11:46:33,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 225. [2020-10-16 11:46:33,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-16 11:46:33,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 560 transitions. [2020-10-16 11:46:33,062 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 560 transitions. Word has length 17 [2020-10-16 11:46:33,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:33,064 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 560 transitions. [2020-10-16 11:46:33,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:46:33,064 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 560 transitions. [2020-10-16 11:46:33,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:46:33,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:33,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:46:33,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:46:33,067 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:33,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:33,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1816049141, now seen corresponding path program 2 times [2020-10-16 11:46:33,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:33,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122559079] [2020-10-16 11:46:33,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:33,106 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 11:46:33,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122559079] [2020-10-16 11:46:33,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:33,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:46:33,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434080053] [2020-10-16 11:46:33,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:46:33,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:33,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:46:33,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:33,109 INFO L87 Difference]: Start difference. First operand 225 states and 560 transitions. Second operand 3 states. [2020-10-16 11:46:33,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:33,138 INFO L93 Difference]: Finished difference Result 410 states and 994 transitions. [2020-10-16 11:46:33,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:46:33,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 11:46:33,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:33,142 INFO L225 Difference]: With dead ends: 410 [2020-10-16 11:46:33,142 INFO L226 Difference]: Without dead ends: 404 [2020-10-16 11:46:33,143 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 [2020-10-16 11:46:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-10-16 11:46:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 259. [2020-10-16 11:46:33,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-16 11:46:33,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 642 transitions. [2020-10-16 11:46:33,179 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 642 transitions. Word has length 17 [2020-10-16 11:46:33,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:33,179 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 642 transitions. [2020-10-16 11:46:33,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:46:33,179 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 642 transitions. [2020-10-16 11:46:33,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:46:33,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:33,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:46:33,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:46:33,181 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:33,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:33,182 INFO L82 PathProgramCache]: Analyzing trace with hash 360564935, now seen corresponding path program 1 times [2020-10-16 11:46:33,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:33,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855134673] [2020-10-16 11:46:33,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:33,260 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 11:46:33,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855134673] [2020-10-16 11:46:33,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:33,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:46:33,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794395389] [2020-10-16 11:46:33,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:46:33,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:33,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:46:33,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:33,264 INFO L87 Difference]: Start difference. First operand 259 states and 642 transitions. Second operand 3 states. [2020-10-16 11:46:33,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:33,319 INFO L93 Difference]: Finished difference Result 214 states and 462 transitions. [2020-10-16 11:46:33,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:46:33,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 11:46:33,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:33,322 INFO L225 Difference]: With dead ends: 214 [2020-10-16 11:46:33,322 INFO L226 Difference]: Without dead ends: 143 [2020-10-16 11:46:33,322 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 [2020-10-16 11:46:33,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-16 11:46:33,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 124. [2020-10-16 11:46:33,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-16 11:46:33,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 243 transitions. [2020-10-16 11:46:33,328 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 243 transitions. Word has length 17 [2020-10-16 11:46:33,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:33,329 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 243 transitions. [2020-10-16 11:46:33,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:46:33,329 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 243 transitions. [2020-10-16 11:46:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:46:33,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:33,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:46:33,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:46:33,332 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:33,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:33,332 INFO L82 PathProgramCache]: Analyzing trace with hash 685760811, now seen corresponding path program 2 times [2020-10-16 11:46:33,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:33,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216790059] [2020-10-16 11:46:33,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:33,385 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 11:46:33,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216790059] [2020-10-16 11:46:33,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:33,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:46:33,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38325862] [2020-10-16 11:46:33,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:46:33,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:33,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:46:33,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:33,388 INFO L87 Difference]: Start difference. First operand 124 states and 243 transitions. Second operand 3 states. [2020-10-16 11:46:33,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:33,406 INFO L93 Difference]: Finished difference Result 189 states and 359 transitions. [2020-10-16 11:46:33,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:46:33,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 11:46:33,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:33,409 INFO L225 Difference]: With dead ends: 189 [2020-10-16 11:46:33,409 INFO L226 Difference]: Without dead ends: 186 [2020-10-16 11:46:33,410 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 [2020-10-16 11:46:33,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-16 11:46:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 125. [2020-10-16 11:46:33,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-16 11:46:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 238 transitions. [2020-10-16 11:46:33,416 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 238 transitions. Word has length 17 [2020-10-16 11:46:33,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:33,416 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 238 transitions. [2020-10-16 11:46:33,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:46:33,417 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 238 transitions. [2020-10-16 11:46:33,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 11:46:33,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:33,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:46:33,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:46:33,418 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:33,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:33,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1792170110, now seen corresponding path program 1 times [2020-10-16 11:46:33,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:33,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700567831] [2020-10-16 11:46:33,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:33,471 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 11:46:33,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700567831] [2020-10-16 11:46:33,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:33,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:46:33,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23270458] [2020-10-16 11:46:33,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:46:33,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:33,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:46:33,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:33,474 INFO L87 Difference]: Start difference. First operand 125 states and 238 transitions. Second operand 3 states. [2020-10-16 11:46:33,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:33,487 INFO L93 Difference]: Finished difference Result 125 states and 234 transitions. [2020-10-16 11:46:33,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:46:33,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-16 11:46:33,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:33,489 INFO L225 Difference]: With dead ends: 125 [2020-10-16 11:46:33,489 INFO L226 Difference]: Without dead ends: 111 [2020-10-16 11:46:33,490 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 [2020-10-16 11:46:33,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-16 11:46:33,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-10-16 11:46:33,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-16 11:46:33,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 210 transitions. [2020-10-16 11:46:33,494 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 210 transitions. Word has length 20 [2020-10-16 11:46:33,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:33,495 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 210 transitions. [2020-10-16 11:46:33,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:46:33,495 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 210 transitions. [2020-10-16 11:46:33,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 11:46:33,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:46:33,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:46:33,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:46:33,496 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:46:33,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:46:33,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1787104108, now seen corresponding path program 1 times [2020-10-16 11:46:33,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:46:33,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044799865] [2020-10-16 11:46:33,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:46:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:46:33,545 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 11:46:33,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044799865] [2020-10-16 11:46:33,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:46:33,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:46:33,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125930510] [2020-10-16 11:46:33,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:46:33,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:46:33,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:46:33,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:46:33,547 INFO L87 Difference]: Start difference. First operand 111 states and 210 transitions. Second operand 3 states. [2020-10-16 11:46:33,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:46:33,553 INFO L93 Difference]: Finished difference Result 73 states and 151 transitions. [2020-10-16 11:46:33,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:46:33,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-16 11:46:33,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:46:33,554 INFO L225 Difference]: With dead ends: 73 [2020-10-16 11:46:33,554 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:46:33,554 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 [2020-10-16 11:46:33,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:46:33,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:46:33,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:46:33,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:46:33,555 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-16 11:46:33,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:46:33,556 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:46:33,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:46:33,556 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:46:33,556 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:46:33,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 11:46:33,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:46:33 BasicIcfg [2020-10-16 11:46:33,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:46:33,563 INFO L168 Benchmark]: Toolchain (without parser) took 3297.67 ms. Allocated memory was 138.9 MB in the beginning and 249.0 MB in the end (delta: 110.1 MB). Free memory was 100.6 MB in the beginning and 175.6 MB in the end (delta: -75.0 MB). Peak memory consumption was 35.1 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:33,564 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-16 11:46:33,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.29 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 100.6 MB in the beginning and 159.7 MB in the end (delta: -59.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:33,566 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.43 ms. Allocated memory is still 201.3 MB. Free memory was 159.7 MB in the beginning and 157.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:33,566 INFO L168 Benchmark]: Boogie Preprocessor took 27.96 ms. Allocated memory is still 201.3 MB. Free memory was 157.5 MB in the beginning and 155.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:33,567 INFO L168 Benchmark]: RCFGBuilder took 377.10 ms. Allocated memory is still 201.3 MB. Free memory was 155.5 MB in the beginning and 132.9 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:33,568 INFO L168 Benchmark]: TraceAbstraction took 2212.12 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 131.9 MB in the beginning and 175.6 MB in the end (delta: -43.7 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:46:33,573 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.0 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 604.29 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 100.6 MB in the beginning and 159.7 MB in the end (delta: -59.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 70.43 ms. Allocated memory is still 201.3 MB. Free memory was 159.7 MB in the beginning and 157.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.96 ms. Allocated memory is still 201.3 MB. Free memory was 157.5 MB in the beginning and 155.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 377.10 ms. Allocated memory is still 201.3 MB. Free memory was 155.5 MB in the beginning and 132.9 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2212.12 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 131.9 MB in the beginning and 175.6 MB in the end (delta: -43.7 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1160 VarBasedMoverChecksPositive, 48 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 295 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.8s, 72 PlacesBefore, 41 PlacesAfterwards, 92 TransitionsBefore, 53 TransitionsAfterwards, 2992 CoEnabledTransitionPairs, 5 FixpointIterations, 11 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 48 TotalNumberOfCompositions, 10306 MoverChecksTotal - PositiveResult [Line: 698]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 724]: 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, 69 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 492 SDtfs, 196 SDslu, 228 SDs, 0 SdLazy, 91 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=326occurred 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, 9 MinimizatonAttempts, 244 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 3385 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...