/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_05-lockfuns_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 22:15:12,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 22:15:12,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 22:15:12,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 22:15:12,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 22:15:12,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 22:15:12,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 22:15:12,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 22:15:12,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 22:15:12,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 22:15:12,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 22:15:12,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 22:15:12,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 22:15:12,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 22:15:12,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 22:15:12,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 22:15:12,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 22:15:12,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 22:15:12,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 22:15:12,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 22:15:12,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 22:15:12,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 22:15:12,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 22:15:12,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 22:15:12,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 22:15:12,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 22:15:12,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 22:15:12,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 22:15:12,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 22:15:12,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 22:15:12,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 22:15:12,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 22:15:12,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 22:15:12,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 22:15:12,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 22:15:12,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 22:15:12,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 22:15:12,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 22:15:12,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 22:15:12,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 22:15:12,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 22:15:12,522 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 22:15:12,547 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 22:15:12,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 22:15:12,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 22:15:12,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 22:15:12,549 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 22:15:12,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 22:15:12,550 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 22:15:12,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 22:15:12,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 22:15:12,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 22:15:12,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 22:15:12,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 22:15:12,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 22:15:12,553 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 22:15:12,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 22:15:12,555 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 22:15:12,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 22:15:12,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 22:15:12,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 22:15:12,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 22:15:12,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 22:15:12,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 22:15:12,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 22:15:12,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-21 22:15:12,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 22:15:12,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 22:15:12,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 22:15:12,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 22:15:12,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-21 22:15:12,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-21 22:15:12,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 22:15:12,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 22:15:12,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 22:15:12,928 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 22:15:12,928 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 22:15:12,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2020-10-21 22:15:12,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b7a92bd5/db04ec21912d444d8ba0fee9fc0be1ac/FLAG2c3e62051 [2020-10-21 22:15:13,524 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 22:15:13,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2020-10-21 22:15:13,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b7a92bd5/db04ec21912d444d8ba0fee9fc0be1ac/FLAG2c3e62051 [2020-10-21 22:15:13,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b7a92bd5/db04ec21912d444d8ba0fee9fc0be1ac [2020-10-21 22:15:13,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 22:15:13,851 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 22:15:13,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 22:15:13,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 22:15:13,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 22:15:13,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:15:13" (1/1) ... [2020-10-21 22:15:13,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c5baaeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:15:13, skipping insertion in model container [2020-10-21 22:15:13,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:15:13" (1/1) ... [2020-10-21 22:15:13,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 22:15:13,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 22:15:14,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:15:14,382 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 22:15:14,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:15:14,520 INFO L208 MainTranslator]: Completed translation [2020-10-21 22:15:14,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:15:14 WrapperNode [2020-10-21 22:15:14,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 22:15:14,522 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 22:15:14,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 22:15:14,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 22:15:14,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:15:14" (1/1) ... [2020-10-21 22:15:14,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:15:14" (1/1) ... [2020-10-21 22:15:14,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 22:15:14,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 22:15:14,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 22:15:14,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 22:15:14,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:15:14" (1/1) ... [2020-10-21 22:15:14,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:15:14" (1/1) ... [2020-10-21 22:15:14,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:15:14" (1/1) ... [2020-10-21 22:15:14,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:15:14" (1/1) ... [2020-10-21 22:15:14,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:15:14" (1/1) ... [2020-10-21 22:15:14,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:15:14" (1/1) ... [2020-10-21 22:15:14,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:15:14" (1/1) ... [2020-10-21 22:15:14,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 22:15:14,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 22:15:14,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 22:15:14,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 22:15:14,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:15:14" (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 22:15:14,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-21 22:15:14,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 22:15:14,709 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-21 22:15:14,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 22:15:14,709 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2020-10-21 22:15:14,709 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2020-10-21 22:15:14,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 22:15:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 22:15:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 22:15:14,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 22:15:14,712 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 22:15:15,117 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 22:15:15,117 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-21 22:15:15,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:15:15 BoogieIcfgContainer [2020-10-21 22:15:15,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 22:15:15,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 22:15:15,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 22:15:15,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 22:15:15,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 10:15:13" (1/3) ... [2020-10-21 22:15:15,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a72eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:15:15, skipping insertion in model container [2020-10-21 22:15:15,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:15:14" (2/3) ... [2020-10-21 22:15:15,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a72eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:15:15, skipping insertion in model container [2020-10-21 22:15:15,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:15:15" (3/3) ... [2020-10-21 22:15:15,130 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2020-10-21 22:15:15,142 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 22:15:15,142 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-21 22:15:15,149 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 22:15:15,150 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 22:15:15,180 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,181 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,181 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,182 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,182 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,182 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,183 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,183 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,184 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,184 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,184 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,185 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,185 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,185 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,186 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,186 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,186 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,187 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,187 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,191 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,191 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,192 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,192 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,192 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,193 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,193 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,193 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,194 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:15,202 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-10-21 22:15:15,216 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-21 22:15:15,237 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:15:15,238 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:15:15,238 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:15:15,238 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:15:15,238 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:15:15,238 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:15:15,238 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:15:15,238 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:15:15,253 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:15:15,256 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 100 transitions, 208 flow [2020-10-21 22:15:15,258 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 100 transitions, 208 flow [2020-10-21 22:15:15,260 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 90 places, 100 transitions, 208 flow [2020-10-21 22:15:15,331 INFO L129 PetriNetUnfolder]: 19/136 cut-off events. [2020-10-21 22:15:15,331 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-21 22:15:15,338 INFO L80 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 136 events. 19/136 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 350 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2020-10-21 22:15:15,343 INFO L116 LiptonReduction]: Number of co-enabled transitions 2378 [2020-10-21 22:15:16,999 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-10-21 22:15:17,772 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 110 [2020-10-21 22:15:17,979 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-21 22:15:18,018 INFO L131 LiptonReduction]: Checked pairs total: 3187 [2020-10-21 22:15:18,019 INFO L133 LiptonReduction]: Total number of compositions: 89 [2020-10-21 22:15:18,026 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 33 transitions, 74 flow [2020-10-21 22:15:18,045 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 132 states. [2020-10-21 22:15:18,048 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-10-21 22:15:18,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-21 22:15:18,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:18,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-21 22:15:18,056 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:15:18,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:18,061 INFO L82 PathProgramCache]: Analyzing trace with hash 12544897, now seen corresponding path program 1 times [2020-10-21 22:15:18,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:18,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152408501] [2020-10-21 22:15:18,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:18,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:15:18,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152408501] [2020-10-21 22:15:18,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:15:18,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:15:18,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806399202] [2020-10-21 22:15:18,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:15:18,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:18,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:15:18,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:15:18,285 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 3 states. [2020-10-21 22:15:18,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:18,332 INFO L93 Difference]: Finished difference Result 127 states and 225 transitions. [2020-10-21 22:15:18,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:15:18,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-21 22:15:18,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:18,345 INFO L225 Difference]: With dead ends: 127 [2020-10-21 22:15:18,345 INFO L226 Difference]: Without dead ends: 73 [2020-10-21 22:15:18,347 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 22:15:18,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-21 22:15:18,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-21 22:15:18,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-21 22:15:18,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 126 transitions. [2020-10-21 22:15:18,395 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 126 transitions. Word has length 4 [2020-10-21 22:15:18,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:18,395 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 126 transitions. [2020-10-21 22:15:18,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:15:18,396 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 126 transitions. [2020-10-21 22:15:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-21 22:15:18,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:18,397 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-21 22:15:18,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 22:15:18,397 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:15:18,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:18,398 INFO L82 PathProgramCache]: Analyzing trace with hash -832277276, now seen corresponding path program 1 times [2020-10-21 22:15:18,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:18,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829152498] [2020-10-21 22:15:18,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:15:18,434 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:15:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:15:18,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:15:18,523 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 22:15:18,523 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 22:15:18,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 22:15:18,527 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 22:15:18,535 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-21 22:15:18,551 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,551 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,552 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,552 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,552 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,552 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,553 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,553 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,553 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,553 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,553 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,554 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,554 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,554 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,554 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,554 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,555 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,555 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,555 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,555 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,556 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,556 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,556 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,556 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,556 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,556 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,557 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,557 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,557 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,557 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,558 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,558 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,558 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,558 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,558 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,559 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,559 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,559 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,559 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,560 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,560 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,560 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,560 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,560 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,561 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,561 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,561 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,563 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,563 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,564 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,564 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,564 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,564 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,564 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,565 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,565 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:18,567 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2020-10-21 22:15:18,568 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-21 22:15:18,568 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:15:18,568 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:15:18,568 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:15:18,569 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:15:18,569 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:15:18,569 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:15:18,569 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:15:18,569 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:15:18,572 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:15:18,572 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 131 transitions, 280 flow [2020-10-21 22:15:18,572 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 131 transitions, 280 flow [2020-10-21 22:15:18,573 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 116 places, 131 transitions, 280 flow [2020-10-21 22:15:18,640 INFO L129 PetriNetUnfolder]: 34/226 cut-off events. [2020-10-21 22:15:18,640 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-21 22:15:18,644 INFO L80 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 226 events. 34/226 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 725 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 138. Up to 8 conditions per place. [2020-10-21 22:15:18,652 INFO L116 LiptonReduction]: Number of co-enabled transitions 7076 [2020-10-21 22:15:20,730 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-10-21 22:15:21,216 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 110 [2020-10-21 22:15:21,390 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-21 22:15:21,447 INFO L131 LiptonReduction]: Checked pairs total: 13384 [2020-10-21 22:15:21,447 INFO L133 LiptonReduction]: Total number of compositions: 109 [2020-10-21 22:15:21,448 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 56 transitions, 130 flow [2020-10-21 22:15:21,581 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 2113 states. [2020-10-21 22:15:21,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states. [2020-10-21 22:15:21,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-21 22:15:21,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:21,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-21 22:15:21,582 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:15:21,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:21,583 INFO L82 PathProgramCache]: Analyzing trace with hash 20878089, now seen corresponding path program 1 times [2020-10-21 22:15:21,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:21,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330864568] [2020-10-21 22:15:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:21,640 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 22:15:21,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330864568] [2020-10-21 22:15:21,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:15:21,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:15:21,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812252417] [2020-10-21 22:15:21,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:15:21,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:21,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:15:21,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:15:21,642 INFO L87 Difference]: Start difference. First operand 2113 states. Second operand 3 states. [2020-10-21 22:15:21,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:21,705 INFO L93 Difference]: Finished difference Result 2108 states and 5618 transitions. [2020-10-21 22:15:21,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:15:21,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-21 22:15:21,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:21,733 INFO L225 Difference]: With dead ends: 2108 [2020-10-21 22:15:21,733 INFO L226 Difference]: Without dead ends: 1239 [2020-10-21 22:15:21,734 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 22:15:21,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-10-21 22:15:21,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1239. [2020-10-21 22:15:21,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2020-10-21 22:15:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 3284 transitions. [2020-10-21 22:15:21,849 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 3284 transitions. Word has length 4 [2020-10-21 22:15:21,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:21,849 INFO L481 AbstractCegarLoop]: Abstraction has 1239 states and 3284 transitions. [2020-10-21 22:15:21,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:15:21,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 3284 transitions. [2020-10-21 22:15:21,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 22:15:21,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:21,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:15:21,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-21 22:15:21,851 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:15:21,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:21,851 INFO L82 PathProgramCache]: Analyzing trace with hash -775205804, now seen corresponding path program 1 times [2020-10-21 22:15:21,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:21,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992553870] [2020-10-21 22:15:21,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:21,904 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 22:15:21,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992553870] [2020-10-21 22:15:21,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464908888] [2020-10-21 22:15:21,905 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 22:15:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:21,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-21 22:15:21,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:15:21,994 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 22:15:21,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-21 22:15:21,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2020-10-21 22:15:21,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999136325] [2020-10-21 22:15:21,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:15:21,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:21,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:15:21,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:15:21,997 INFO L87 Difference]: Start difference. First operand 1239 states and 3284 transitions. Second operand 3 states. [2020-10-21 22:15:22,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:22,027 INFO L93 Difference]: Finished difference Result 1209 states and 3199 transitions. [2020-10-21 22:15:22,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:15:22,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-21 22:15:22,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:22,035 INFO L225 Difference]: With dead ends: 1209 [2020-10-21 22:15:22,036 INFO L226 Difference]: Without dead ends: 1209 [2020-10-21 22:15:22,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 22:15:22,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2020-10-21 22:15:22,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1209. [2020-10-21 22:15:22,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1209 states. [2020-10-21 22:15:22,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 3199 transitions. [2020-10-21 22:15:22,079 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 3199 transitions. Word has length 8 [2020-10-21 22:15:22,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:22,080 INFO L481 AbstractCegarLoop]: Abstraction has 1209 states and 3199 transitions. [2020-10-21 22:15:22,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:15:22,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 3199 transitions. [2020-10-21 22:15:22,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 22:15:22,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:22,082 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-10-21 22:15:22,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:15:22,296 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:15:22,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:22,297 INFO L82 PathProgramCache]: Analyzing trace with hash -873952460, now seen corresponding path program 1 times [2020-10-21 22:15:22,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:22,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680803211] [2020-10-21 22:15:22,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:15:22,336 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:15:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:15:22,369 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:15:22,378 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 22:15:22,378 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 22:15:22,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 22:15:22,379 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 22:15:22,381 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-21 22:15:22,388 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,389 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,389 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,389 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,389 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,389 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,389 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,390 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,390 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,390 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,390 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,390 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,390 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,391 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,391 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,391 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,391 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,391 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,392 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,392 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,392 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,392 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,392 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,393 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,393 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,393 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,393 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,393 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,394 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,394 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,394 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,394 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,394 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,394 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,395 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,395 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,395 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,395 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,396 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,396 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,396 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,396 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,396 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,396 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,397 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,397 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,397 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,397 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,397 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,397 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,398 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,398 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,398 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,398 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,398 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,399 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,399 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,399 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,400 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,400 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,400 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,400 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,400 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,400 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,401 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,401 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,402 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,403 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,403 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,403 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,403 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,403 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,404 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,404 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,404 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,406 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,407 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,407 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,407 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,408 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,408 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,408 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,408 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,408 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:22,412 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2020-10-21 22:15:22,412 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-21 22:15:22,412 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:15:22,412 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:15:22,413 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:15:22,413 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:15:22,413 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:15:22,413 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:15:22,413 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:15:22,413 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:15:22,415 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:15:22,415 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 162 transitions, 354 flow [2020-10-21 22:15:22,415 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 162 transitions, 354 flow [2020-10-21 22:15:22,416 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 142 places, 162 transitions, 354 flow [2020-10-21 22:15:22,474 INFO L129 PetriNetUnfolder]: 54/347 cut-off events. [2020-10-21 22:15:22,475 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-10-21 22:15:22,480 INFO L80 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 347 events. 54/347 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1275 event pairs, 1 based on Foata normal form. 0/285 useless extension candidates. Maximal degree in co-relation 234. Up to 16 conditions per place. [2020-10-21 22:15:22,500 INFO L116 LiptonReduction]: Number of co-enabled transitions 13398 [2020-10-21 22:15:24,506 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-21 22:15:25,062 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-21 22:15:25,633 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105 [2020-10-21 22:15:25,775 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-21 22:15:26,019 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-21 22:15:26,188 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-21 22:15:26,202 INFO L131 LiptonReduction]: Checked pairs total: 30270 [2020-10-21 22:15:26,203 INFO L133 LiptonReduction]: Total number of compositions: 130 [2020-10-21 22:15:26,203 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 75 transitions, 180 flow [2020-10-21 22:15:28,525 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26221 states. [2020-10-21 22:15:28,525 INFO L276 IsEmpty]: Start isEmpty. Operand 26221 states. [2020-10-21 22:15:28,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-21 22:15:28,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:28,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-21 22:15:28,526 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:15:28,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:28,526 INFO L82 PathProgramCache]: Analyzing trace with hash 30866793, now seen corresponding path program 1 times [2020-10-21 22:15:28,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:28,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376028504] [2020-10-21 22:15:28,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:28,559 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 22:15:28,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376028504] [2020-10-21 22:15:28,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:15:28,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:15:28,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152383528] [2020-10-21 22:15:28,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:15:28,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:28,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:15:28,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:15:28,561 INFO L87 Difference]: Start difference. First operand 26221 states. Second operand 3 states. [2020-10-21 22:15:28,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:28,926 INFO L93 Difference]: Finished difference Result 26216 states and 93058 transitions. [2020-10-21 22:15:28,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:15:28,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-21 22:15:28,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:29,097 INFO L225 Difference]: With dead ends: 26216 [2020-10-21 22:15:29,098 INFO L226 Difference]: Without dead ends: 14919 [2020-10-21 22:15:29,098 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 22:15:30,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14919 states. [2020-10-21 22:15:30,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14919 to 14919. [2020-10-21 22:15:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14919 states. [2020-10-21 22:15:30,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14919 states to 14919 states and 53132 transitions. [2020-10-21 22:15:30,879 INFO L78 Accepts]: Start accepts. Automaton has 14919 states and 53132 transitions. Word has length 4 [2020-10-21 22:15:30,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:30,880 INFO L481 AbstractCegarLoop]: Abstraction has 14919 states and 53132 transitions. [2020-10-21 22:15:30,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:15:30,881 INFO L276 IsEmpty]: Start isEmpty. Operand 14919 states and 53132 transitions. [2020-10-21 22:15:30,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 22:15:30,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:30,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:15:30,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 22:15:30,885 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:15:30,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:30,885 INFO L82 PathProgramCache]: Analyzing trace with hash -933279788, now seen corresponding path program 1 times [2020-10-21 22:15:30,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:30,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113486382] [2020-10-21 22:15:30,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:30,949 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 22:15:30,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113486382] [2020-10-21 22:15:30,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453804990] [2020-10-21 22:15:30,950 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 22:15:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:31,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-21 22:15:31,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:15:31,014 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 22:15:31,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-21 22:15:31,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2020-10-21 22:15:31,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944593319] [2020-10-21 22:15:31,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:15:31,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:31,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:15:31,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:15:31,017 INFO L87 Difference]: Start difference. First operand 14919 states and 53132 transitions. Second operand 3 states. [2020-10-21 22:15:31,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:31,347 INFO L93 Difference]: Finished difference Result 14764 states and 52547 transitions. [2020-10-21 22:15:31,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:15:31,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-21 22:15:31,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:31,417 INFO L225 Difference]: With dead ends: 14764 [2020-10-21 22:15:31,418 INFO L226 Difference]: Without dead ends: 14764 [2020-10-21 22:15:31,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 22:15:31,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14764 states. [2020-10-21 22:15:32,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14764 to 14764. [2020-10-21 22:15:32,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14764 states. [2020-10-21 22:15:32,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14764 states to 14764 states and 52547 transitions. [2020-10-21 22:15:32,448 INFO L78 Accepts]: Start accepts. Automaton has 14764 states and 52547 transitions. Word has length 8 [2020-10-21 22:15:32,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:32,448 INFO L481 AbstractCegarLoop]: Abstraction has 14764 states and 52547 transitions. [2020-10-21 22:15:32,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:15:32,449 INFO L276 IsEmpty]: Start isEmpty. Operand 14764 states and 52547 transitions. [2020-10-21 22:15:32,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 22:15:32,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:32,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:15:32,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:15:32,651 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:15:32,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:32,652 INFO L82 PathProgramCache]: Analyzing trace with hash 910369069, now seen corresponding path program 1 times [2020-10-21 22:15:32,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:32,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464825730] [2020-10-21 22:15:32,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:32,691 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 22:15:32,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464825730] [2020-10-21 22:15:32,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821060199] [2020-10-21 22:15:32,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:15:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:32,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-21 22:15:32,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:15:32,789 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-21 22:15:32,789 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-21 22:15:32,792 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-21 22:15:32,792 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-21 22:15:32,792 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-21 22:15:32,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:15:32,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-21 22:15:32,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-10-21 22:15:32,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116548170] [2020-10-21 22:15:32,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:15:32,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:32,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:15:32,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:15:32,809 INFO L87 Difference]: Start difference. First operand 14764 states and 52547 transitions. Second operand 3 states. [2020-10-21 22:15:32,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:32,950 INFO L93 Difference]: Finished difference Result 12873 states and 40352 transitions. [2020-10-21 22:15:32,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:15:32,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-21 22:15:32,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:32,987 INFO L225 Difference]: With dead ends: 12873 [2020-10-21 22:15:32,987 INFO L226 Difference]: Without dead ends: 12867 [2020-10-21 22:15:32,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 22:15:33,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12867 states. [2020-10-21 22:15:33,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12867 to 11025. [2020-10-21 22:15:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11025 states. [2020-10-21 22:15:33,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11025 states to 11025 states and 35262 transitions. [2020-10-21 22:15:33,448 INFO L78 Accepts]: Start accepts. Automaton has 11025 states and 35262 transitions. Word has length 13 [2020-10-21 22:15:33,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:33,448 INFO L481 AbstractCegarLoop]: Abstraction has 11025 states and 35262 transitions. [2020-10-21 22:15:33,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:15:33,449 INFO L276 IsEmpty]: Start isEmpty. Operand 11025 states and 35262 transitions. [2020-10-21 22:15:33,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 22:15:33,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:33,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:15:33,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:15:33,664 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:15:33,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:33,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1323178521, now seen corresponding path program 1 times [2020-10-21 22:15:33,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:33,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960840551] [2020-10-21 22:15:33,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:33,698 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 22:15:33,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960840551] [2020-10-21 22:15:33,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679469705] [2020-10-21 22:15:33,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:15:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:15:33,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-21 22:15:33,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:15:33,779 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 22:15:33,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:15:33,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2020-10-21 22:15:33,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022347976] [2020-10-21 22:15:33,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:15:33,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:15:33,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:15:33,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:15:33,781 INFO L87 Difference]: Start difference. First operand 11025 states and 35262 transitions. Second operand 5 states. [2020-10-21 22:15:33,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:15:33,849 INFO L93 Difference]: Finished difference Result 11007 states and 35229 transitions. [2020-10-21 22:15:33,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 22:15:33,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-21 22:15:33,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:15:34,141 INFO L225 Difference]: With dead ends: 11007 [2020-10-21 22:15:34,141 INFO L226 Difference]: Without dead ends: 11007 [2020-10-21 22:15:34,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:15:34,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11007 states. [2020-10-21 22:15:34,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11007 to 11007. [2020-10-21 22:15:34,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11007 states. [2020-10-21 22:15:34,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11007 states to 11007 states and 35229 transitions. [2020-10-21 22:15:34,570 INFO L78 Accepts]: Start accepts. Automaton has 11007 states and 35229 transitions. Word has length 14 [2020-10-21 22:15:34,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:15:34,570 INFO L481 AbstractCegarLoop]: Abstraction has 11007 states and 35229 transitions. [2020-10-21 22:15:34,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:15:34,571 INFO L276 IsEmpty]: Start isEmpty. Operand 11007 states and 35229 transitions. [2020-10-21 22:15:34,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:15:34,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:15:34,572 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-10-21 22:15:34,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:15:34,788 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:15:34,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:15:34,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1163306805, now seen corresponding path program 1 times [2020-10-21 22:15:34,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:15:34,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519914499] [2020-10-21 22:15:34,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:15:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:15:34,805 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:15:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-21 22:15:34,817 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-21 22:15:34,825 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-21 22:15:34,826 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-21 22:15:34,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-21 22:15:34,827 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-21 22:15:34,827 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-21 22:15:34,838 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,838 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,839 WARN L313 ript$VariableManager]: TermVariabe t_funThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,839 WARN L313 ript$VariableManager]: TermVariabe t_funThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,839 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,839 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,840 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,840 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,840 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,840 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,841 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,841 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,841 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,841 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,842 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,842 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,842 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,842 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,843 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,843 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,843 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,843 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,844 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,844 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,844 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,844 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,844 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,845 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,845 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,845 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,846 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,846 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,846 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,846 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,847 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,847 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,847 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,847 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,848 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,848 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,848 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,848 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,849 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,849 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,849 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,849 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,850 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,850 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,850 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,850 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,851 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,851 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,851 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,851 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,851 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,852 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,852 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,852 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,852 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,853 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,853 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,853 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,853 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,853 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,853 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,854 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,854 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,854 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,854 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,854 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,854 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,855 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,855 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,855 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,855 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,855 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,856 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,856 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,856 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,856 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,856 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,856 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,857 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,857 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,857 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,859 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,859 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,860 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,860 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,860 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,860 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,861 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,861 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,861 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of4ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,863 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,863 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,863 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,863 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,864 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,864 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,864 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,864 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,865 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of4ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,866 WARN L313 ript$VariableManager]: TermVariabe t_funThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,866 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,866 WARN L313 ript$VariableManager]: TermVariabe t_funThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,867 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,867 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_lock_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,867 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,867 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,868 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,868 WARN L313 ript$VariableManager]: TermVariabe |t_funThread4of4ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:15:34,872 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-21 22:15:34,873 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-21 22:15:34,873 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:15:34,873 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:15:34,873 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:15:34,873 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:15:34,873 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:15:34,873 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:15:34,874 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:15:34,874 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:15:34,876 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:15:34,877 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 168 places, 193 transitions, 430 flow [2020-10-21 22:15:34,877 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 168 places, 193 transitions, 430 flow [2020-10-21 22:15:34,877 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 168 places, 193 transitions, 430 flow [2020-10-21 22:15:34,981 INFO L129 PetriNetUnfolder]: 86/532 cut-off events. [2020-10-21 22:15:34,981 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-10-21 22:15:34,991 INFO L80 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 532 events. 86/532 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2165 event pairs, 6 based on Foata normal form. 0/441 useless extension candidates. Maximal degree in co-relation 367. Up to 32 conditions per place. [2020-10-21 22:15:35,032 INFO L116 LiptonReduction]: Number of co-enabled transitions 21576 [2020-10-21 22:15:35,812 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-10-21 22:15:39,505 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 110 [2020-10-21 22:15:39,702 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-21 22:15:39,762 INFO L131 LiptonReduction]: Checked pairs total: 56928 [2020-10-21 22:15:39,762 INFO L133 LiptonReduction]: Total number of compositions: 155 [2020-10-21 22:15:39,763 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 93 transitions, 230 flow [2020-10-21 22:19:01,549 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 325657 states. [2020-10-21 22:19:01,549 INFO L276 IsEmpty]: Start isEmpty. Operand 325657 states. [2020-10-21 22:19:01,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-21 22:19:01,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:19:01,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-21 22:19:01,550 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-21 22:19:01,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:19:01,550 INFO L82 PathProgramCache]: Analyzing trace with hash 42472615, now seen corresponding path program 1 times [2020-10-21 22:19:01,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:19:01,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687349348] [2020-10-21 22:19:01,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:19:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:19:01,581 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 22:19:01,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687349348] [2020-10-21 22:19:01,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:19:01,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:19:01,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117401009] [2020-10-21 22:19:01,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:19:01,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:19:01,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:19:01,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:19:01,582 INFO L87 Difference]: Start difference. First operand 325657 states. Second operand 3 states. [2020-10-21 22:19:11,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:19:11,924 INFO L93 Difference]: Finished difference Result 325652 states and 1444602 transitions. [2020-10-21 22:19:11,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:19:11,925 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-21 22:19:11,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:19:12,699 INFO L225 Difference]: With dead ends: 325652 [2020-10-21 22:19:12,699 INFO L226 Difference]: Without dead ends: 179079 [2020-10-21 22:19:12,699 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 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown