/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_23-sound_unlock_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 22:19:02,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 22:19:02,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 22:19:02,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 22:19:02,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 22:19:02,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 22:19:02,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 22:19:02,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 22:19:02,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 22:19:02,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 22:19:02,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 22:19:02,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 22:19:02,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 22:19:02,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 22:19:02,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 22:19:02,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 22:19:02,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 22:19:02,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 22:19:02,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 22:19:02,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 22:19:02,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 22:19:02,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 22:19:02,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 22:19:02,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 22:19:02,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-21 22:19:02,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 22:19:02,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 22:19:02,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 22:19:02,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 22:19:02,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 22:19:02,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 22:19:02,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 22:19:02,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 22:19:02,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 22:19:02,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 22:19:02,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 22:19:02,550 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 [2020-10-21 22:19:02,574 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 22:19:02,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 22:19:02,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 22:19:02,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 22:19:02,576 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 22:19:02,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 22:19:02,576 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 22:19:02,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 22:19:02,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 22:19:02,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 22:19:02,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 22:19:02,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 22:19:02,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 22:19:02,578 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 22:19:02,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 22:19:02,578 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 22:19:02,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 22:19:02,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 22:19:02,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 22:19:02,579 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 22:19:02,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 22:19:02,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 22:19:02,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 22:19:02,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-21 22:19:02,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 22:19:02,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 22:19:02,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 22:19:02,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 22:19:02,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-21 22:19:02,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-21 22:19:02,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 22:19:02,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 22:19:02,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 22:19:02,890 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 22:19:02,890 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 22:19:02,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_23-sound_unlock_racing.i [2020-10-21 22:19:02,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10243a358/74997af014af4f63b2c0b51f1901daa2/FLAGf5c28e494 [2020-10-21 22:19:03,536 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 22:19:03,536 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_23-sound_unlock_racing.i [2020-10-21 22:19:03,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10243a358/74997af014af4f63b2c0b51f1901daa2/FLAGf5c28e494 [2020-10-21 22:19:03,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10243a358/74997af014af4f63b2c0b51f1901daa2 [2020-10-21 22:19:03,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 22:19:03,815 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 22:19:03,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 22:19:03,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 22:19:03,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 22:19:03,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:19:03" (1/1) ... [2020-10-21 22:19:03,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@286d28c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:19:03, skipping insertion in model container [2020-10-21 22:19:03,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:19:03" (1/1) ... [2020-10-21 22:19:03,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 22:19:03,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 22:19:04,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:19:04,313 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 22:19:04,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:19:04,442 INFO L208 MainTranslator]: Completed translation [2020-10-21 22:19:04,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:19:04 WrapperNode [2020-10-21 22:19:04,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 22:19:04,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 22:19:04,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 22:19:04,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 22:19:04,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:19:04" (1/1) ... [2020-10-21 22:19:04,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:19:04" (1/1) ... [2020-10-21 22:19:04,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 22:19:04,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 22:19:04,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 22:19:04,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 22:19:04,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:19:04" (1/1) ... [2020-10-21 22:19:04,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:19:04" (1/1) ... [2020-10-21 22:19:04,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:19:04" (1/1) ... [2020-10-21 22:19:04,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:19:04" (1/1) ... [2020-10-21 22:19:04,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:19:04" (1/1) ... [2020-10-21 22:19:04,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:19:04" (1/1) ... [2020-10-21 22:19:04,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:19:04" (1/1) ... [2020-10-21 22:19:04,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 22:19:04,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 22:19:04,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 22:19:04,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 22:19:04,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:19:04" (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 [2020-10-21 22:19:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-21 22:19:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 22:19:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-21 22:19:04,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 22:19:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2020-10-21 22:19:04,595 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2020-10-21 22:19:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 22:19:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 22:19:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 22:19:04,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 22:19:04,597 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 22:19:05,008 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 22:19:05,008 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-21 22:19:05,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:19:05 BoogieIcfgContainer [2020-10-21 22:19:05,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 22:19:05,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 22:19:05,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 22:19:05,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 22:19:05,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 10:19:03" (1/3) ... [2020-10-21 22:19:05,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47987a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:19:05, skipping insertion in model container [2020-10-21 22:19:05,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:19:04" (2/3) ... [2020-10-21 22:19:05,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47987a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:19:05, skipping insertion in model container [2020-10-21 22:19:05,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:19:05" (3/3) ... [2020-10-21 22:19:05,019 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_23-sound_unlock_racing.i [2020-10-21 22:19:05,030 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 22:19:05,030 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-21 22:19:05,037 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 22:19:05,038 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 22:19:05,066 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,066 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,066 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,067 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,067 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,068 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,068 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,068 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,068 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,069 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,069 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,069 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,069 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,070 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,070 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,070 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,070 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,071 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,075 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,075 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,075 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,075 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,076 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,076 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,076 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,076 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,077 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:05,091 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-10-21 22:19:05,103 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-21 22:19:05,122 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:19:05,122 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:19:05,122 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:19:05,122 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:19:05,122 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:19:05,123 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:19:05,123 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:19:05,123 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:19:05,135 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:19:05,137 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 112 transitions, 232 flow [2020-10-21 22:19:05,139 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 112 transitions, 232 flow [2020-10-21 22:19:05,141 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 101 places, 112 transitions, 232 flow [2020-10-21 22:19:05,218 INFO L129 PetriNetUnfolder]: 20/148 cut-off events. [2020-10-21 22:19:05,218 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-21 22:19:05,227 INFO L80 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 148 events. 20/148 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 352 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 73. Up to 4 conditions per place. [2020-10-21 22:19:05,232 INFO L116 LiptonReduction]: Number of co-enabled transitions 2296 [2020-10-21 22:19:06,848 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-21 22:19:07,879 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 110 [2020-10-21 22:19:08,081 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-21 22:19:09,074 WARN L193 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 150 [2020-10-21 22:19:09,515 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-21 22:19:09,530 INFO L131 LiptonReduction]: Checked pairs total: 3704 [2020-10-21 22:19:09,530 INFO L133 LiptonReduction]: Total number of compositions: 103 [2020-10-21 22:19:09,536 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 34 transitions, 76 flow [2020-10-21 22:19:09,552 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 143 states. [2020-10-21 22:19:09,554 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states. [2020-10-21 22:19:09,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-21 22:19:09,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:19:09,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-21 22:19:09,562 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:19:09,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:19:09,568 INFO L82 PathProgramCache]: Analyzing trace with hash 424968311, now seen corresponding path program 1 times [2020-10-21 22:19:09,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:19:09,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649694242] [2020-10-21 22:19:09,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:19:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:19:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:19:09,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649694242] [2020-10-21 22:19:09,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:19:09,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:19:09,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683339310] [2020-10-21 22:19:09,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:19:09,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:19:09,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:19:09,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:19:09,796 INFO L87 Difference]: Start difference. First operand 143 states. Second operand 3 states. [2020-10-21 22:19:09,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:19:09,836 INFO L93 Difference]: Finished difference Result 141 states and 244 transitions. [2020-10-21 22:19:09,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:19:09,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-21 22:19:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:19:09,848 INFO L225 Difference]: With dead ends: 141 [2020-10-21 22:19:09,848 INFO L226 Difference]: Without dead ends: 79 [2020-10-21 22:19:09,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:19:09,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-21 22:19:09,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-21 22:19:09,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-21 22:19:09,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 137 transitions. [2020-10-21 22:19:09,893 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 137 transitions. Word has length 5 [2020-10-21 22:19:09,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:19:09,893 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 137 transitions. [2020-10-21 22:19:09,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:19:09,894 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 137 transitions. [2020-10-21 22:19:09,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-21 22:19:09,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:19:09,894 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-21 22:19:09,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 22:19:09,895 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:19:09,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:19:09,895 INFO L82 PathProgramCache]: Analyzing trace with hash 254520468, now seen corresponding path program 1 times [2020-10-21 22:19:09,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:19:09,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844789047] [2020-10-21 22:19:09,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:19:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:19:09,939 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:19:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:19:09,992 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:19:10,019 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 22:19:10,019 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 22:19:10,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 22:19:10,021 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 22:19:10,022 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 22:19:10,023 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-21 22:19:10,031 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,031 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,032 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,032 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,032 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,032 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,033 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,033 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,033 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,033 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,034 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,034 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,034 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,034 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,034 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,035 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,035 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,035 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,036 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,036 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,036 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,036 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,036 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,037 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,037 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,037 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,037 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,038 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,038 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,038 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,038 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,039 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,039 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,039 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,039 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,040 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,040 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,040 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,041 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,041 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,041 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,041 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,042 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,042 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,042 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,044 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,045 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,045 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,045 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,045 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,045 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,046 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,046 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,046 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:10,052 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2020-10-21 22:19:10,052 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-21 22:19:10,053 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:19:10,053 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:19:10,053 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:19:10,053 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:19:10,053 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:19:10,054 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:19:10,054 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:19:10,054 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:19:10,057 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:19:10,057 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 142 transitions, 302 flow [2020-10-21 22:19:10,058 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 142 transitions, 302 flow [2020-10-21 22:19:10,058 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 126 places, 142 transitions, 302 flow [2020-10-21 22:19:10,110 INFO L129 PetriNetUnfolder]: 35/237 cut-off events. [2020-10-21 22:19:10,110 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-21 22:19:10,116 INFO L80 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 237 events. 35/237 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 719 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2020-10-21 22:19:10,126 INFO L116 LiptonReduction]: Number of co-enabled transitions 6776 [2020-10-21 22:19:12,121 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-21 22:19:12,844 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2020-10-21 22:19:12,951 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-21 22:19:13,120 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-21 22:19:13,225 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-21 22:19:14,198 WARN L193 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 150 [2020-10-21 22:19:14,591 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-21 22:19:14,648 INFO L131 LiptonReduction]: Checked pairs total: 14738 [2020-10-21 22:19:14,648 INFO L133 LiptonReduction]: Total number of compositions: 124 [2020-10-21 22:19:14,650 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 57 transitions, 132 flow [2020-10-21 22:19:14,780 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2270 states. [2020-10-21 22:19:14,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2270 states. [2020-10-21 22:19:14,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-21 22:19:14,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:19:14,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-21 22:19:14,784 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:19:14,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:19:14,784 INFO L82 PathProgramCache]: Analyzing trace with hash 706034753, now seen corresponding path program 1 times [2020-10-21 22:19:14,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:19:14,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444120988] [2020-10-21 22:19:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:19:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:19:14,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:19:14,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444120988] [2020-10-21 22:19:14,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:19:14,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:19:14,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193128062] [2020-10-21 22:19:14,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:19:14,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:19:14,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:19:14,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:19:14,867 INFO L87 Difference]: Start difference. First operand 2270 states. Second operand 3 states. [2020-10-21 22:19:14,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:19:14,926 INFO L93 Difference]: Finished difference Result 2264 states and 6049 transitions. [2020-10-21 22:19:14,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:19:14,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-21 22:19:14,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:19:14,945 INFO L225 Difference]: With dead ends: 2264 [2020-10-21 22:19:14,945 INFO L226 Difference]: Without dead ends: 1395 [2020-10-21 22:19:14,946 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 [2020-10-21 22:19:14,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2020-10-21 22:19:15,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1395. [2020-10-21 22:19:15,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1395 states. [2020-10-21 22:19:15,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 3715 transitions. [2020-10-21 22:19:15,082 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 3715 transitions. Word has length 5 [2020-10-21 22:19:15,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:19:15,082 INFO L481 AbstractCegarLoop]: Abstraction has 1395 states and 3715 transitions. [2020-10-21 22:19:15,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:19:15,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 3715 transitions. [2020-10-21 22:19:15,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:19:15,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:19:15,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:19:15,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 22:19:15,096 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:19:15,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:19:15,097 INFO L82 PathProgramCache]: Analyzing trace with hash 869240774, now seen corresponding path program 1 times [2020-10-21 22:19:15,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:19:15,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853113509] [2020-10-21 22:19:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:19:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:19:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:19:15,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853113509] [2020-10-21 22:19:15,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847474337] [2020-10-21 22:19:15,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:19:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:19:15,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-21 22:19:15,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:19:15,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-21 22:19:15,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-21 22:19:15,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2020-10-21 22:19:15,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006662556] [2020-10-21 22:19:15,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:19:15,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:19:15,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:19:15,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:19:15,245 INFO L87 Difference]: Start difference. First operand 1395 states and 3715 transitions. Second operand 3 states. [2020-10-21 22:19:15,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:19:15,277 INFO L93 Difference]: Finished difference Result 1365 states and 3630 transitions. [2020-10-21 22:19:15,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:19:15,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-21 22:19:15,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:19:15,287 INFO L225 Difference]: With dead ends: 1365 [2020-10-21 22:19:15,287 INFO L226 Difference]: Without dead ends: 1365 [2020-10-21 22:19:15,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:19:15,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2020-10-21 22:19:15,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1365. [2020-10-21 22:19:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1365 states. [2020-10-21 22:19:15,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 3630 transitions. [2020-10-21 22:19:15,329 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 3630 transitions. Word has length 9 [2020-10-21 22:19:15,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:19:15,330 INFO L481 AbstractCegarLoop]: Abstraction has 1365 states and 3630 transitions. [2020-10-21 22:19:15,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:19:15,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 3630 transitions. [2020-10-21 22:19:15,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 22:19:15,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:19:15,332 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-10-21 22:19:15,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:19:15,548 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:19:15,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:19:15,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1969243065, now seen corresponding path program 1 times [2020-10-21 22:19:15,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:19:15,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278716878] [2020-10-21 22:19:15,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:19:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:19:15,587 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:19:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:19:15,621 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:19:15,638 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 22:19:15,638 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 22:19:15,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 22:19:15,639 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 22:19:15,639 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 22:19:15,641 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-21 22:19:15,655 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,655 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,655 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,655 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,656 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,656 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,656 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,656 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,656 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,656 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,656 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,657 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,657 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,657 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,657 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,657 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,657 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,658 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,658 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,658 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,658 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,658 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,658 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,659 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,659 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,659 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,659 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,659 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,659 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,659 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,659 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,660 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,660 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,660 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,660 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,660 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,660 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,660 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,660 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,660 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,661 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,661 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,661 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,661 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,661 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,661 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,661 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,661 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,661 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,662 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,662 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,662 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,662 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,662 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,662 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,662 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,663 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,663 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,663 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,663 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,663 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,663 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,663 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,665 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,665 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,665 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,665 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,666 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,666 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,666 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,666 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,666 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,668 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,668 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,668 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,668 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,668 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,668 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,669 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,669 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,669 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:15,671 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2020-10-21 22:19:15,671 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-21 22:19:15,671 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:19:15,671 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:19:15,671 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:19:15,672 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:19:15,672 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:19:15,672 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:19:15,672 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:19:15,672 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:19:15,674 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:19:15,674 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 172 transitions, 374 flow [2020-10-21 22:19:15,674 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 172 transitions, 374 flow [2020-10-21 22:19:15,674 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 151 places, 172 transitions, 374 flow [2020-10-21 22:19:15,739 INFO L129 PetriNetUnfolder]: 55/357 cut-off events. [2020-10-21 22:19:15,739 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-10-21 22:19:15,744 INFO L80 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 357 events. 55/357 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1273 event pairs, 1 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 245. Up to 16 conditions per place. [2020-10-21 22:19:15,761 INFO L116 LiptonReduction]: Number of co-enabled transitions 12768 [2020-10-21 22:19:19,300 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-21 22:19:19,758 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-21 22:19:20,040 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-21 22:19:20,979 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 150 [2020-10-21 22:19:21,371 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-21 22:19:21,386 INFO L131 LiptonReduction]: Checked pairs total: 34000 [2020-10-21 22:19:21,387 INFO L133 LiptonReduction]: Total number of compositions: 144 [2020-10-21 22:19:21,387 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 59 places, 76 transitions, 182 flow [2020-10-21 22:19:24,679 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 28106 states. [2020-10-21 22:19:24,680 INFO L276 IsEmpty]: Start isEmpty. Operand 28106 states. [2020-10-21 22:19:24,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-21 22:19:24,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:19:24,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-21 22:19:24,681 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:19:24,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:19:24,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1037002569, now seen corresponding path program 1 times [2020-10-21 22:19:24,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:19:24,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311304923] [2020-10-21 22:19:24,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:19:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:19:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:19:24,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311304923] [2020-10-21 22:19:24,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:19:24,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:19:24,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747495517] [2020-10-21 22:19:24,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:19:24,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:19:24,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:19:24,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:19:24,724 INFO L87 Difference]: Start difference. First operand 28106 states. Second operand 3 states. [2020-10-21 22:19:25,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:19:25,078 INFO L93 Difference]: Finished difference Result 28043 states and 99617 transitions. [2020-10-21 22:19:25,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:19:25,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-21 22:19:25,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:19:25,222 INFO L225 Difference]: With dead ends: 28043 [2020-10-21 22:19:25,222 INFO L226 Difference]: Without dead ends: 16648 [2020-10-21 22:19:25,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:19:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16648 states. [2020-10-21 22:19:26,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16648 to 16648. [2020-10-21 22:19:26,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16648 states. [2020-10-21 22:19:26,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16648 states to 16648 states and 59458 transitions. [2020-10-21 22:19:26,174 INFO L78 Accepts]: Start accepts. Automaton has 16648 states and 59458 transitions. Word has length 5 [2020-10-21 22:19:26,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:19:26,174 INFO L481 AbstractCegarLoop]: Abstraction has 16648 states and 59458 transitions. [2020-10-21 22:19:26,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:19:26,174 INFO L276 IsEmpty]: Start isEmpty. Operand 16648 states and 59458 transitions. [2020-10-21 22:19:26,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 22:19:26,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:19:26,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:19:26,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 22:19:26,181 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:19:26,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:19:26,182 INFO L82 PathProgramCache]: Analyzing trace with hash 2093520465, now seen corresponding path program 1 times [2020-10-21 22:19:26,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:19:26,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893558065] [2020-10-21 22:19:26,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:19:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:19:26,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:19:26,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893558065] [2020-10-21 22:19:26,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884091246] [2020-10-21 22:19:26,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:19:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:19:26,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-21 22:19:26,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:19:26,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:19:26,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:19:26,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-21 22:19:26,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073782861] [2020-10-21 22:19:26,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 22:19:26,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:19:26,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 22:19:26,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:19:26,343 INFO L87 Difference]: Start difference. First operand 16648 states and 59458 transitions. Second operand 4 states. [2020-10-21 22:19:26,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:19:26,435 INFO L93 Difference]: Finished difference Result 16605 states and 59376 transitions. [2020-10-21 22:19:26,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 22:19:26,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-21 22:19:26,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:19:26,503 INFO L225 Difference]: With dead ends: 16605 [2020-10-21 22:19:26,503 INFO L226 Difference]: Without dead ends: 16605 [2020-10-21 22:19:26,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:19:27,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16605 states. [2020-10-21 22:19:28,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16605 to 16605. [2020-10-21 22:19:28,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16605 states. [2020-10-21 22:19:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16605 states to 16605 states and 59376 transitions. [2020-10-21 22:19:28,246 INFO L78 Accepts]: Start accepts. Automaton has 16605 states and 59376 transitions. Word has length 14 [2020-10-21 22:19:28,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:19:28,247 INFO L481 AbstractCegarLoop]: Abstraction has 16605 states and 59376 transitions. [2020-10-21 22:19:28,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 22:19:28,247 INFO L276 IsEmpty]: Start isEmpty. Operand 16605 states and 59376 transitions. [2020-10-21 22:19:28,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:19:28,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:19:28,248 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-10-21 22:19:28,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:19:28,449 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:19:28,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:19:28,450 INFO L82 PathProgramCache]: Analyzing trace with hash 701232968, now seen corresponding path program 1 times [2020-10-21 22:19:28,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:19:28,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743852577] [2020-10-21 22:19:28,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:19:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:19:28,486 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:19:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:19:28,507 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:19:28,521 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 22:19:28,521 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 22:19:28,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-21 22:19:28,522 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-21 22:19:28,523 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 22:19:28,523 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-21 22:19:28,537 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,537 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,537 WARN L313 ript$VariableManager]: TermVariabe t_funThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,537 WARN L313 ript$VariableManager]: TermVariabe t_funThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,537 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,537 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,537 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,537 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,538 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,538 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,538 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,538 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,538 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,538 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,539 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,539 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,539 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,539 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,539 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,540 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,540 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,540 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,540 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,540 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,540 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,540 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,540 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,540 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,541 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,541 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,541 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,541 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,541 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,541 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,541 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,541 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,542 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,542 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,542 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,542 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,542 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,542 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,542 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,542 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,542 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,543 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,543 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,543 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,543 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,543 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,543 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,543 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,543 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,543 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,543 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,544 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,544 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,544 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,544 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,544 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,544 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,544 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,544 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,545 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,545 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,545 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,545 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,545 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,545 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,546 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,546 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,546 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,546 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,546 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,547 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,547 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,547 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,547 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,547 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,547 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,548 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,549 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,549 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,549 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,549 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,549 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,550 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,550 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,550 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,550 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,551 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,551 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,551 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,552 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,552 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,552 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,552 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,552 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,552 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,553 WARN L313 ript$VariableManager]: TermVariabe t_funThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,553 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,553 WARN L313 ript$VariableManager]: TermVariabe t_funThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,553 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,553 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,554 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,554 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,554 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,554 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:19:28,556 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-21 22:19:28,556 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-21 22:19:28,557 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:19:28,557 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:19:28,557 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:19:28,557 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:19:28,557 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:19:28,557 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:19:28,557 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:19:28,557 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:19:28,560 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:19:28,560 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 202 transitions, 448 flow [2020-10-21 22:19:28,560 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 202 transitions, 448 flow [2020-10-21 22:19:28,560 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 176 places, 202 transitions, 448 flow [2020-10-21 22:19:28,659 INFO L129 PetriNetUnfolder]: 87/541 cut-off events. [2020-10-21 22:19:28,659 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-10-21 22:19:28,666 INFO L80 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 541 events. 87/541 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2166 event pairs, 6 based on Foata normal form. 0/449 useless extension candidates. Maximal degree in co-relation 377. Up to 32 conditions per place. [2020-10-21 22:19:28,705 INFO L116 LiptonReduction]: Number of co-enabled transitions 20496 [2020-10-21 22:19:29,287 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-10-21 22:19:31,731 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-10-21 22:19:32,710 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-21 22:19:33,208 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-21 22:19:33,427 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-21 22:19:33,537 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-21 22:19:34,406 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 145 [2020-10-21 22:19:34,827 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-21 22:19:35,234 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-21 22:19:35,657 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-21 22:19:35,677 INFO L131 LiptonReduction]: Checked pairs total: 55874 [2020-10-21 22:19:35,677 INFO L133 LiptonReduction]: Total number of compositions: 162 [2020-10-21 22:19:35,678 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 95 transitions, 234 flow [2020-10-21 22:23:11,920 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 348278 states. [2020-10-21 22:23:11,921 INFO L276 IsEmpty]: Start isEmpty. Operand 348278 states. [2020-10-21 22:23:11,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-21 22:23:11,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:23:11,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-21 22:23:11,922 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:23:11,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:23:11,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1412723432, now seen corresponding path program 1 times [2020-10-21 22:23:11,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:23:11,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127633006] [2020-10-21 22:23:11,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:23:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:23:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:23:11,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127633006] [2020-10-21 22:23:11,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:23:11,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:23:11,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913455737] [2020-10-21 22:23:11,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:23:11,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:23:11,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:23:11,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:23:11,956 INFO L87 Difference]: Start difference. First operand 348278 states. Second operand 3 states. [2020-10-21 22:23:15,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:23:15,293 INFO L93 Difference]: Finished difference Result 348272 states and 1548281 transitions. [2020-10-21 22:23:15,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:23:15,294 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-21 22:23:15,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request...