/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 13:13:48,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 13:13:48,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 13:13:48,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 13:13:48,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 13:13:48,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 13:13:48,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 13:13:49,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 13:13:49,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 13:13:49,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 13:13:49,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 13:13:49,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 13:13:49,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 13:13:49,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 13:13:49,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 13:13:49,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 13:13:49,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 13:13:49,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 13:13:49,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 13:13:49,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 13:13:49,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 13:13:49,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 13:13:49,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 13:13:49,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 13:13:49,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 13:13:49,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 13:13:49,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 13:13:49,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 13:13:49,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 13:13:49,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 13:13:49,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 13:13:49,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 13:13:49,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 13:13:49,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 13:13:49,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 13:13:49,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 13:13:49,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 13:13:49,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 13:13:49,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 13:13:49,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 13:13:49,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 13:13:49,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-11 13:13:49,054 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 13:13:49,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 13:13:49,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 13:13:49,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 13:13:49,056 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 13:13:49,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 13:13:49,057 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 13:13:49,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 13:13:49,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 13:13:49,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 13:13:49,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 13:13:49,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 13:13:49,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 13:13:49,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 13:13:49,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 13:13:49,059 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 13:13:49,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 13:13:49,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 13:13:49,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 13:13:49,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 13:13:49,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 13:13:49,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 13:13:49,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 13:13:49,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 13:13:49,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 13:13:49,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 13:13:49,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 13:13:49,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 13:13:49,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 13:13:49,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 13:13:49,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 13:13:49,360 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 13:13:49,363 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 13:13:49,364 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 13:13:49,365 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 13:13:49,365 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-11 13:13:49,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4c008b3b/1266f3a9dcdd41bc955e87c0ea8f6951/FLAG24ee76be8 [2020-10-11 13:13:49,928 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 13:13:49,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-11 13:13:49,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4c008b3b/1266f3a9dcdd41bc955e87c0ea8f6951/FLAG24ee76be8 [2020-10-11 13:13:50,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4c008b3b/1266f3a9dcdd41bc955e87c0ea8f6951 [2020-10-11 13:13:50,260 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 13:13:50,262 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 13:13:50,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 13:13:50,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 13:13:50,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 13:13:50,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:13:50" (1/1) ... [2020-10-11 13:13:50,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@447fadbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:50, skipping insertion in model container [2020-10-11 13:13:50,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:13:50" (1/1) ... [2020-10-11 13:13:50,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 13:13:50,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 13:13:50,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 13:13:50,761 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 13:13:50,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 13:13:50,881 INFO L208 MainTranslator]: Completed translation [2020-10-11 13:13:50,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:50 WrapperNode [2020-10-11 13:13:50,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 13:13:50,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 13:13:50,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 13:13:50,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 13:13:50,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:50" (1/1) ... [2020-10-11 13:13:50,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:50" (1/1) ... [2020-10-11 13:13:50,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 13:13:50,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 13:13:50,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 13:13:50,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 13:13:50,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:50" (1/1) ... [2020-10-11 13:13:50,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:50" (1/1) ... [2020-10-11 13:13:50,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:50" (1/1) ... [2020-10-11 13:13:50,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:50" (1/1) ... [2020-10-11 13:13:50,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:50" (1/1) ... [2020-10-11 13:13:50,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:50" (1/1) ... [2020-10-11 13:13:50,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:50" (1/1) ... [2020-10-11 13:13:50,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 13:13:50,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 13:13:50,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 13:13:50,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 13:13:50,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 13:13:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 13:13:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-11 13:13:51,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-11 13:13:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-11 13:13:51,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-11 13:13:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 13:13:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 13:13:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 13:13:51,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 13:13:51,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 13:13:51,060 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 13:13:51,365 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 13:13:51,366 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-11 13:13:51,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:13:51 BoogieIcfgContainer [2020-10-11 13:13:51,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 13:13:51,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 13:13:51,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 13:13:51,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 13:13:51,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 01:13:50" (1/3) ... [2020-10-11 13:13:51,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9805c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:13:51, skipping insertion in model container [2020-10-11 13:13:51,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:50" (2/3) ... [2020-10-11 13:13:51,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9805c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:13:51, skipping insertion in model container [2020-10-11 13:13:51,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:13:51" (3/3) ... [2020-10-11 13:13:51,376 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2020-10-11 13:13:51,389 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 13:13:51,389 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 13:13:51,396 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-11 13:13:51,397 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 13:13:51,425 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,425 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,425 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,426 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,427 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,427 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,429 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,429 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,429 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,430 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,431 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,431 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,435 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,436 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,436 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,448 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,448 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,449 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,449 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 13:13:51,508 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-11 13:13:51,529 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 13:13:51,530 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 13:13:51,530 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 13:13:51,531 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 13:13:51,531 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 13:13:51,531 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 13:13:51,531 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 13:13:51,531 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 13:13:51,555 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 13:13:51,557 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 103 transitions, 228 flow [2020-10-11 13:13:51,559 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 103 transitions, 228 flow [2020-10-11 13:13:51,560 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 103 transitions, 228 flow [2020-10-11 13:13:51,611 INFO L129 PetriNetUnfolder]: 25/103 cut-off events. [2020-10-11 13:13:51,611 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 13:13:51,619 INFO L80 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 103 events. 25/103 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2020-10-11 13:13:51,624 INFO L117 LiptonReduction]: Number of co-enabled transitions 3196 [2020-10-11 13:13:52,852 INFO L132 LiptonReduction]: Checked pairs total: 12166 [2020-10-11 13:13:52,853 INFO L134 LiptonReduction]: Total number of compositions: 52 [2020-10-11 13:13:52,860 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 63 transitions, 148 flow [2020-10-11 13:13:52,909 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 719 states. [2020-10-11 13:13:52,911 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states. [2020-10-11 13:13:52,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-11 13:13:52,917 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:13:52,918 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-11 13:13:52,919 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:13:52,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:13:52,924 INFO L82 PathProgramCache]: Analyzing trace with hash 14012195, now seen corresponding path program 1 times [2020-10-11 13:13:52,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:13:52,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449451404] [2020-10-11 13:13:52,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:13:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:13:53,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:13:53,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449451404] [2020-10-11 13:13:53,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:13:53,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 13:13:53,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906481533] [2020-10-11 13:13:53,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-11 13:13:53,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:13:53,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-11 13:13:53,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-11 13:13:53,107 INFO L87 Difference]: Start difference. First operand 719 states. Second operand 2 states. [2020-10-11 13:13:53,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:13:53,153 INFO L93 Difference]: Finished difference Result 719 states and 2103 transitions. [2020-10-11 13:13:53,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-11 13:13:53,157 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-11 13:13:53,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:13:53,185 INFO L225 Difference]: With dead ends: 719 [2020-10-11 13:13:53,186 INFO L226 Difference]: Without dead ends: 680 [2020-10-11 13:13:53,187 INFO L673 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 [2020-10-11 13:13:53,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-10-11 13:13:53,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 680. [2020-10-11 13:13:53,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-10-11 13:13:53,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 2018 transitions. [2020-10-11 13:13:53,284 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 2018 transitions. Word has length 4 [2020-10-11 13:13:53,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:13:53,285 INFO L481 AbstractCegarLoop]: Abstraction has 680 states and 2018 transitions. [2020-10-11 13:13:53,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-11 13:13:53,285 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 2018 transitions. [2020-10-11 13:13:53,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 13:13:53,287 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:13:53,287 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:13:53,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 13:13:53,287 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:13:53,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:13:53,288 INFO L82 PathProgramCache]: Analyzing trace with hash -870713509, now seen corresponding path program 1 times [2020-10-11 13:13:53,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:13:53,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981712000] [2020-10-11 13:13:53,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:13:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:13:53,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:13:53,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981712000] [2020-10-11 13:13:53,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:13:53,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 13:13:53,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291572494] [2020-10-11 13:13:53,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:13:53,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:13:53,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:13:53,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:13:53,360 INFO L87 Difference]: Start difference. First operand 680 states and 2018 transitions. Second operand 3 states. [2020-10-11 13:13:53,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:13:53,407 INFO L93 Difference]: Finished difference Result 685 states and 1989 transitions. [2020-10-11 13:13:53,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:13:53,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-11 13:13:53,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:13:53,415 INFO L225 Difference]: With dead ends: 685 [2020-10-11 13:13:53,415 INFO L226 Difference]: Without dead ends: 568 [2020-10-11 13:13:53,417 INFO L673 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 [2020-10-11 13:13:53,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-10-11 13:13:53,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 550. [2020-10-11 13:13:53,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-11 13:13:53,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1644 transitions. [2020-10-11 13:13:53,466 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1644 transitions. Word has length 9 [2020-10-11 13:13:53,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:13:53,467 INFO L481 AbstractCegarLoop]: Abstraction has 550 states and 1644 transitions. [2020-10-11 13:13:53,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:13:53,467 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1644 transitions. [2020-10-11 13:13:53,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 13:13:53,471 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:13:53,471 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:13:53,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 13:13:53,472 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:13:53,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:13:53,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1073713561, now seen corresponding path program 1 times [2020-10-11 13:13:53,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:13:53,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125987387] [2020-10-11 13:13:53,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:13:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:13:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:13:53,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125987387] [2020-10-11 13:13:53,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:13:53,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 13:13:53,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665836653] [2020-10-11 13:13:53,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:13:53,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:13:53,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:13:53,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:13:53,580 INFO L87 Difference]: Start difference. First operand 550 states and 1644 transitions. Second operand 3 states. [2020-10-11 13:13:53,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:13:53,605 INFO L93 Difference]: Finished difference Result 531 states and 1570 transitions. [2020-10-11 13:13:53,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:13:53,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-11 13:13:53,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:13:53,609 INFO L225 Difference]: With dead ends: 531 [2020-10-11 13:13:53,610 INFO L226 Difference]: Without dead ends: 408 [2020-10-11 13:13:53,610 INFO L673 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 [2020-10-11 13:13:53,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-10-11 13:13:53,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2020-10-11 13:13:53,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-10-11 13:13:53,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1242 transitions. [2020-10-11 13:13:53,627 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1242 transitions. Word has length 11 [2020-10-11 13:13:53,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:13:53,628 INFO L481 AbstractCegarLoop]: Abstraction has 408 states and 1242 transitions. [2020-10-11 13:13:53,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:13:53,628 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1242 transitions. [2020-10-11 13:13:53,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-11 13:13:53,631 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:13:53,631 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:13:53,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 13:13:53,632 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:13:53,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:13:53,632 INFO L82 PathProgramCache]: Analyzing trace with hash -783095282, now seen corresponding path program 1 times [2020-10-11 13:13:53,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:13:53,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052253746] [2020-10-11 13:13:53,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:13:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:13:53,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:13:53,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052253746] [2020-10-11 13:13:53,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:13:53,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:13:53,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606939072] [2020-10-11 13:13:53,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:13:53,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:13:53,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:13:53,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:13:53,679 INFO L87 Difference]: Start difference. First operand 408 states and 1242 transitions. Second operand 3 states. [2020-10-11 13:13:53,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:13:53,751 INFO L93 Difference]: Finished difference Result 538 states and 1566 transitions. [2020-10-11 13:13:53,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:13:53,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-11 13:13:53,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:13:53,755 INFO L225 Difference]: With dead ends: 538 [2020-10-11 13:13:53,755 INFO L226 Difference]: Without dead ends: 424 [2020-10-11 13:13:53,755 INFO L673 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 [2020-10-11 13:13:53,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-10-11 13:13:53,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 398. [2020-10-11 13:13:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-11 13:13:53,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1161 transitions. [2020-10-11 13:13:53,768 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1161 transitions. Word has length 17 [2020-10-11 13:13:53,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:13:53,768 INFO L481 AbstractCegarLoop]: Abstraction has 398 states and 1161 transitions. [2020-10-11 13:13:53,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:13:53,769 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1161 transitions. [2020-10-11 13:13:53,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-11 13:13:53,770 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:13:53,770 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:13:53,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 13:13:53,770 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:13:53,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:13:53,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1243088422, now seen corresponding path program 1 times [2020-10-11 13:13:53,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:13:53,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057779172] [2020-10-11 13:13:53,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:13:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:13:53,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:13:53,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057779172] [2020-10-11 13:13:53,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:13:53,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:13:53,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104585104] [2020-10-11 13:13:53,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:13:53,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:13:53,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:13:53,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:13:53,805 INFO L87 Difference]: Start difference. First operand 398 states and 1161 transitions. Second operand 3 states. [2020-10-11 13:13:53,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:13:53,849 INFO L93 Difference]: Finished difference Result 702 states and 2033 transitions. [2020-10-11 13:13:53,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:13:53,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-11 13:13:53,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:13:53,854 INFO L225 Difference]: With dead ends: 702 [2020-10-11 13:13:53,854 INFO L226 Difference]: Without dead ends: 702 [2020-10-11 13:13:53,855 INFO L673 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 [2020-10-11 13:13:53,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-10-11 13:13:53,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 422. [2020-10-11 13:13:53,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-11 13:13:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 1239 transitions. [2020-10-11 13:13:53,871 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 1239 transitions. Word has length 17 [2020-10-11 13:13:53,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:13:53,871 INFO L481 AbstractCegarLoop]: Abstraction has 422 states and 1239 transitions. [2020-10-11 13:13:53,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:13:53,871 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 1239 transitions. [2020-10-11 13:13:53,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-11 13:13:53,873 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:13:53,877 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:13:53,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 13:13:53,877 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:13:53,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:13:53,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1398088036, now seen corresponding path program 2 times [2020-10-11 13:13:53,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:13:53,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763666005] [2020-10-11 13:13:53,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:13:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:13:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:13:53,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763666005] [2020-10-11 13:13:53,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:13:53,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:13:53,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504848681] [2020-10-11 13:13:53,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:13:53,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:13:53,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:13:53,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:13:53,945 INFO L87 Difference]: Start difference. First operand 422 states and 1239 transitions. Second operand 3 states. [2020-10-11 13:13:53,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:13:53,975 INFO L93 Difference]: Finished difference Result 650 states and 1805 transitions. [2020-10-11 13:13:53,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:13:53,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-11 13:13:53,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:13:53,980 INFO L225 Difference]: With dead ends: 650 [2020-10-11 13:13:53,980 INFO L226 Difference]: Without dead ends: 642 [2020-10-11 13:13:53,981 INFO L673 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 [2020-10-11 13:13:53,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-10-11 13:13:53,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 456. [2020-10-11 13:13:53,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-10-11 13:13:53,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1316 transitions. [2020-10-11 13:13:53,997 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1316 transitions. Word has length 17 [2020-10-11 13:13:53,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:13:53,999 INFO L481 AbstractCegarLoop]: Abstraction has 456 states and 1316 transitions. [2020-10-11 13:13:53,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:13:53,999 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1316 transitions. [2020-10-11 13:13:54,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-11 13:13:54,001 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:13:54,001 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:13:54,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 13:13:54,001 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:13:54,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:13:54,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1301572, now seen corresponding path program 2 times [2020-10-11 13:13:54,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:13:54,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770841552] [2020-10-11 13:13:54,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:13:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:13:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:13:54,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770841552] [2020-10-11 13:13:54,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:13:54,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:13:54,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743560516] [2020-10-11 13:13:54,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:13:54,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:13:54,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:13:54,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:13:54,058 INFO L87 Difference]: Start difference. First operand 456 states and 1316 transitions. Second operand 3 states. [2020-10-11 13:13:54,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:13:54,114 INFO L93 Difference]: Finished difference Result 406 states and 1059 transitions. [2020-10-11 13:13:54,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:13:54,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-11 13:13:54,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:13:54,117 INFO L225 Difference]: With dead ends: 406 [2020-10-11 13:13:54,117 INFO L226 Difference]: Without dead ends: 254 [2020-10-11 13:13:54,117 INFO L673 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 [2020-10-11 13:13:54,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-11 13:13:54,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 216. [2020-10-11 13:13:54,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-11 13:13:54,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 520 transitions. [2020-10-11 13:13:54,126 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 520 transitions. Word has length 17 [2020-10-11 13:13:54,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:13:54,126 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 520 transitions. [2020-10-11 13:13:54,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:13:54,127 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 520 transitions. [2020-10-11 13:13:54,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 13:13:54,128 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:13:54,128 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:13:54,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 13:13:54,128 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:13:54,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:13:54,129 INFO L82 PathProgramCache]: Analyzing trace with hash 567307087, now seen corresponding path program 1 times [2020-10-11 13:13:54,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:13:54,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570825362] [2020-10-11 13:13:54,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:13:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:13:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:13:54,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570825362] [2020-10-11 13:13:54,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:13:54,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:13:54,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314521878] [2020-10-11 13:13:54,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:13:54,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:13:54,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:13:54,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:13:54,176 INFO L87 Difference]: Start difference. First operand 216 states and 520 transitions. Second operand 3 states. [2020-10-11 13:13:54,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:13:54,187 INFO L93 Difference]: Finished difference Result 224 states and 530 transitions. [2020-10-11 13:13:54,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:13:54,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-11 13:13:54,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:13:54,190 INFO L225 Difference]: With dead ends: 224 [2020-10-11 13:13:54,190 INFO L226 Difference]: Without dead ends: 208 [2020-10-11 13:13:54,190 INFO L673 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 [2020-10-11 13:13:54,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-11 13:13:54,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2020-10-11 13:13:54,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-11 13:13:54,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 496 transitions. [2020-10-11 13:13:54,197 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 496 transitions. Word has length 19 [2020-10-11 13:13:54,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:13:54,197 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 496 transitions. [2020-10-11 13:13:54,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:13:54,198 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 496 transitions. [2020-10-11 13:13:54,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 13:13:54,198 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 13:13:54,199 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 13:13:54,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 13:13:54,199 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 13:13:54,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 13:13:54,199 INFO L82 PathProgramCache]: Analyzing trace with hash 684902644, now seen corresponding path program 1 times [2020-10-11 13:13:54,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 13:13:54,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555646597] [2020-10-11 13:13:54,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 13:13:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 13:13:54,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 13:13:54,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555646597] [2020-10-11 13:13:54,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 13:13:54,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 13:13:54,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401086377] [2020-10-11 13:13:54,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 13:13:54,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 13:13:54,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 13:13:54,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 13:13:54,251 INFO L87 Difference]: Start difference. First operand 208 states and 496 transitions. Second operand 3 states. [2020-10-11 13:13:54,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 13:13:54,257 INFO L93 Difference]: Finished difference Result 142 states and 367 transitions. [2020-10-11 13:13:54,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 13:13:54,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-11 13:13:54,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 13:13:54,258 INFO L225 Difference]: With dead ends: 142 [2020-10-11 13:13:54,258 INFO L226 Difference]: Without dead ends: 0 [2020-10-11 13:13:54,258 INFO L673 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 [2020-10-11 13:13:54,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-11 13:13:54,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-11 13:13:54,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-11 13:13:54,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-11 13:13:54,259 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-11 13:13:54,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 13:13:54,259 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-11 13:13:54,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 13:13:54,260 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-11 13:13:54,260 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-11 13:13:54,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 13:13:54,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 01:13:54 BasicIcfg [2020-10-11 13:13:54,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 13:13:54,266 INFO L168 Benchmark]: Toolchain (without parser) took 4003.56 ms. Allocated memory was 251.1 MB in the beginning and 367.0 MB in the end (delta: 115.9 MB). Free memory was 206.2 MB in the beginning and 261.7 MB in the end (delta: -55.5 MB). Peak memory consumption was 60.3 MB. Max. memory is 14.2 GB. [2020-10-11 13:13:54,266 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 13:13:54,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 619.60 ms. Allocated memory was 251.1 MB in the beginning and 311.4 MB in the end (delta: 60.3 MB). Free memory was 206.2 MB in the beginning and 264.8 MB in the end (delta: -58.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-11 13:13:54,268 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.56 ms. Allocated memory is still 311.4 MB. Free memory was 264.8 MB in the beginning and 262.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 13:13:54,269 INFO L168 Benchmark]: Boogie Preprocessor took 59.59 ms. Allocated memory is still 311.4 MB. Free memory is still 262.3 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 13:13:54,269 INFO L168 Benchmark]: RCFGBuilder took 374.33 ms. Allocated memory is still 311.4 MB. Free memory was 262.3 MB in the beginning and 235.4 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-11 13:13:54,270 INFO L168 Benchmark]: TraceAbstraction took 2894.51 ms. Allocated memory was 311.4 MB in the beginning and 367.0 MB in the end (delta: 55.6 MB). Free memory was 235.4 MB in the beginning and 261.7 MB in the end (delta: -26.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 14.2 GB. [2020-10-11 13:13:54,274 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 619.60 ms. Allocated memory was 251.1 MB in the beginning and 311.4 MB in the end (delta: 60.3 MB). Free memory was 206.2 MB in the beginning and 264.8 MB in the end (delta: -58.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.56 ms. Allocated memory is still 311.4 MB. Free memory was 264.8 MB in the beginning and 262.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 59.59 ms. Allocated memory is still 311.4 MB. Free memory is still 262.3 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 374.33 ms. Allocated memory is still 311.4 MB. Free memory was 262.3 MB in the beginning and 235.4 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2894.51 ms. Allocated memory was 311.4 MB in the beginning and 367.0 MB in the end (delta: 55.6 MB). Free memory was 235.4 MB in the beginning and 261.7 MB in the end (delta: -26.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1733 VarBasedMoverChecksPositive, 114 VarBasedMoverChecksNegative, 49 SemBasedMoverChecksPositive, 65 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 748 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 84 PlacesBefore, 52 PlacesAfterwards, 103 TransitionsBefore, 63 TransitionsAfterwards, 3196 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 52 TotalNumberOfCompositions, 12166 MoverChecksTotal - PositiveResult [Line: 723]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 697]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 542 SDtfs, 221 SDslu, 266 SDs, 0 SdLazy, 93 SolverSat, 16 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=719occurred 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: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 548 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 3005 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...