/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 06:28:33,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 06:28:33,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 06:28:33,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 06:28:33,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 06:28:33,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 06:28:33,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 06:28:33,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 06:28:33,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 06:28:33,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 06:28:33,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 06:28:33,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 06:28:33,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 06:28:33,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 06:28:33,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 06:28:33,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 06:28:33,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 06:28:33,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 06:28:33,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 06:28:34,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 06:28:34,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 06:28:34,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 06:28:34,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 06:28:34,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 06:28:34,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 06:28:34,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 06:28:34,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 06:28:34,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 06:28:34,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 06:28:34,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 06:28:34,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 06:28:34,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 06:28:34,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 06:28:34,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 06:28:34,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 06:28:34,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 06:28:34,039 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2020-11-12 06:28:34,093 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 06:28:34,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 06:28:34,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 06:28:34,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 06:28:34,095 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 06:28:34,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 06:28:34,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 06:28:34,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 06:28:34,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 06:28:34,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 06:28:34,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 06:28:34,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 06:28:34,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 06:28:34,097 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 06:28:34,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 06:28:34,098 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 06:28:34,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 06:28:34,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 06:28:34,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 06:28:34,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 06:28:34,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 06:28:34,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 06:28:34,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 06:28:34,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 06:28:34,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 06:28:34,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 06:28:34,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 06:28:34,100 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 06:28:34,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 06:28:34,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 06:28:34,101 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=DELAY_SET WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 06:28:34,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 06:28:34,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 06:28:34,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 06:28:34,490 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 06:28:34,491 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 06:28:34,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-11-12 06:28:34,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a6e26c3/55929bc2966e48ac95d451c8eb2ca34b/FLAG371e39066 [2020-11-12 06:28:35,367 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 06:28:35,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2.i [2020-11-12 06:28:35,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a6e26c3/55929bc2966e48ac95d451c8eb2ca34b/FLAG371e39066 [2020-11-12 06:28:35,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1a6e26c3/55929bc2966e48ac95d451c8eb2ca34b [2020-11-12 06:28:35,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 06:28:35,610 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 06:28:35,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 06:28:35,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 06:28:35,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 06:28:35,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:28:35" (1/1) ... [2020-11-12 06:28:35,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@385cf230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:28:35, skipping insertion in model container [2020-11-12 06:28:35,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:28:35" (1/1) ... [2020-11-12 06:28:35,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 06:28:35,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 06:28:36,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 06:28:36,030 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 06:28:36,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 06:28:36,207 INFO L208 MainTranslator]: Completed translation [2020-11-12 06:28:36,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:28:36 WrapperNode [2020-11-12 06:28:36,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 06:28:36,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 06:28:36,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 06:28:36,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 06:28:36,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:28:36" (1/1) ... [2020-11-12 06:28:36,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:28:36" (1/1) ... [2020-11-12 06:28:36,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 06:28:36,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 06:28:36,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 06:28:36,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 06:28:36,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:28:36" (1/1) ... [2020-11-12 06:28:36,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:28:36" (1/1) ... [2020-11-12 06:28:36,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:28:36" (1/1) ... [2020-11-12 06:28:36,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:28:36" (1/1) ... [2020-11-12 06:28:36,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:28:36" (1/1) ... [2020-11-12 06:28:36,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:28:36" (1/1) ... [2020-11-12 06:28:36,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:28:36" (1/1) ... [2020-11-12 06:28:36,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 06:28:36,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 06:28:36,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 06:28:36,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 06:28:36,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:28:36" (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 [2020-11-12 06:28:36,402 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2020-11-12 06:28:36,403 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2020-11-12 06:28:36,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 06:28:36,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 06:28:36,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 06:28:36,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 06:28:36,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 06:28:36,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 06:28:36,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 06:28:36,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 06:28:36,406 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 06:28:36,829 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 06:28:36,830 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-11-12 06:28:36,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:28:36 BoogieIcfgContainer [2020-11-12 06:28:36,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 06:28:36,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 06:28:36,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 06:28:36,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 06:28:36,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:28:35" (1/3) ... [2020-11-12 06:28:36,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799be1c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:28:36, skipping insertion in model container [2020-11-12 06:28:36,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:28:36" (2/3) ... [2020-11-12 06:28:36,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799be1c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:28:36, skipping insertion in model container [2020-11-12 06:28:36,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:28:36" (3/3) ... [2020-11-12 06:28:36,844 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-2.i [2020-11-12 06:28:36,862 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 06:28:36,862 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 06:28:36,866 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 06:28:36,867 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 06:28:36,903 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,904 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,904 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,904 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,905 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,905 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,905 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,905 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,906 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,906 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,906 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,907 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,907 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,907 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,907 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,908 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,908 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,908 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,908 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,909 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,909 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,909 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,909 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,910 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,910 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,910 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,910 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,910 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,911 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,911 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,911 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,911 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,912 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,912 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,912 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,912 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,913 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,913 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,913 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,913 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,914 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,914 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,914 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,914 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,915 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,915 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,915 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,916 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,916 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,916 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,917 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,917 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,917 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,917 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,918 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,918 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,918 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,918 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,919 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,919 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,922 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,922 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,922 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,922 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,923 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,923 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,923 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,923 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,923 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,924 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,924 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 06:28:36,935 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 06:28:36,952 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-12 06:28:37,004 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 06:28:37,004 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 06:28:37,005 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 06:28:37,005 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 06:28:37,005 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 06:28:37,005 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 06:28:37,005 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 06:28:37,005 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 06:28:37,034 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 93 places, 96 transitions, 197 flow [2020-11-12 06:28:37,153 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1101 states, 1099 states have (on average 2.1119199272065514) internal successors, (2321), 1100 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:37,453 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 296ms [2020-11-12 06:28:37,457 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 1101 states, 1099 states have (on average 2.1119199272065514) internal successors, (2321), 1100 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:37,460 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 1101 states, 1083 states have (on average 1.2853185595567866) internal successors, (1392), 1100 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:37,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 1101 states, 1083 states have (on average 1.2853185595567866) internal successors, (1392), 1100 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:37,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 06:28:37,473 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:28:37,474 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 06:28:37,475 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:28:37,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:28:37,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1342416082, now seen corresponding path program 1 times [2020-11-12 06:28:37,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:28:37,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711461863] [2020-11-12 06:28:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:28:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:28:37,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:28:37,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711461863] [2020-11-12 06:28:37,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:28:37,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 06:28:37,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390398349] [2020-11-12 06:28:37,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 06:28:37,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:28:37,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 06:28:37,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 06:28:37,811 INFO L87 Difference]: Start difference. First operand has 1101 states, 1083 states have (on average 1.2853185595567866) internal successors, (1392), 1100 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:37,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:28:37,911 INFO L93 Difference]: Finished difference Result 1809 states and 2197 transitions. [2020-11-12 06:28:37,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 06:28:37,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2020-11-12 06:28:37,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:28:37,933 INFO L225 Difference]: With dead ends: 1809 [2020-11-12 06:28:37,933 INFO L226 Difference]: Without dead ends: 467 [2020-11-12 06:28:37,935 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 06:28:37,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2020-11-12 06:28:38,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 264. [2020-11-12 06:28:38,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 262 states have (on average 1.2290076335877862) internal successors, (322), 263 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:38,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 322 transitions. [2020-11-12 06:28:38,006 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 322 transitions. Word has length 41 [2020-11-12 06:28:38,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:28:38,007 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 322 transitions. [2020-11-12 06:28:38,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:38,007 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 322 transitions. [2020-11-12 06:28:38,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-12 06:28:38,009 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:28:38,009 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 06:28:38,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 06:28:38,010 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:28:38,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:28:38,011 INFO L82 PathProgramCache]: Analyzing trace with hash -349437635, now seen corresponding path program 1 times [2020-11-12 06:28:38,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:28:38,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884480297] [2020-11-12 06:28:38,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:28:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:28:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:28:38,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884480297] [2020-11-12 06:28:38,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:28:38,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-12 06:28:38,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023832627] [2020-11-12 06:28:38,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 06:28:38,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:28:38,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 06:28:38,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-12 06:28:38,203 INFO L87 Difference]: Start difference. First operand 264 states and 322 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:38,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:28:38,297 INFO L93 Difference]: Finished difference Result 196 states and 241 transitions. [2020-11-12 06:28:38,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 06:28:38,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2020-11-12 06:28:38,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:28:38,303 INFO L225 Difference]: With dead ends: 196 [2020-11-12 06:28:38,303 INFO L226 Difference]: Without dead ends: 130 [2020-11-12 06:28:38,304 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-12 06:28:38,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-11-12 06:28:38,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-11-12 06:28:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.2403100775193798) internal successors, (160), 129 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:38,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 160 transitions. [2020-11-12 06:28:38,327 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 160 transitions. Word has length 42 [2020-11-12 06:28:38,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:28:38,328 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 160 transitions. [2020-11-12 06:28:38,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 160 transitions. [2020-11-12 06:28:38,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-12 06:28:38,331 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:28:38,333 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 06:28:38,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 06:28:38,334 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:28:38,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:28:38,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1772769385, now seen corresponding path program 1 times [2020-11-12 06:28:38,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:28:38,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943657214] [2020-11-12 06:28:38,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:28:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:28:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:28:38,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943657214] [2020-11-12 06:28:38,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:28:38,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-12 06:28:38,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541205672] [2020-11-12 06:28:38,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 06:28:38,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:28:38,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 06:28:38,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-12 06:28:38,521 INFO L87 Difference]: Start difference. First operand 130 states and 160 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:38,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:28:38,557 INFO L93 Difference]: Finished difference Result 134 states and 163 transitions. [2020-11-12 06:28:38,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 06:28:38,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2020-11-12 06:28:38,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:28:38,560 INFO L225 Difference]: With dead ends: 134 [2020-11-12 06:28:38,560 INFO L226 Difference]: Without dead ends: 130 [2020-11-12 06:28:38,560 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-12 06:28:38,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-11-12 06:28:38,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-11-12 06:28:38,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.2325581395348837) internal successors, (159), 129 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:38,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 159 transitions. [2020-11-12 06:28:38,568 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 159 transitions. Word has length 59 [2020-11-12 06:28:38,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:28:38,568 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 159 transitions. [2020-11-12 06:28:38,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:38,569 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 159 transitions. [2020-11-12 06:28:38,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-12 06:28:38,571 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:28:38,571 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 06:28:38,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 06:28:38,571 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:28:38,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:28:38,572 INFO L82 PathProgramCache]: Analyzing trace with hash 576617955, now seen corresponding path program 1 times [2020-11-12 06:28:38,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:28:38,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57354811] [2020-11-12 06:28:38,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:28:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:28:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:28:38,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57354811] [2020-11-12 06:28:38,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:28:38,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-12 06:28:38,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994691889] [2020-11-12 06:28:38,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-12 06:28:38,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:28:38,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-12 06:28:38,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-12 06:28:38,667 INFO L87 Difference]: Start difference. First operand 130 states and 159 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:38,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:28:38,738 INFO L93 Difference]: Finished difference Result 160 states and 192 transitions. [2020-11-12 06:28:38,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 06:28:38,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2020-11-12 06:28:38,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:28:38,739 INFO L225 Difference]: With dead ends: 160 [2020-11-12 06:28:38,740 INFO L226 Difference]: Without dead ends: 129 [2020-11-12 06:28:38,740 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-12 06:28:38,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-11-12 06:28:38,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2020-11-12 06:28:38,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.2265625) internal successors, (157), 128 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:38,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 157 transitions. [2020-11-12 06:28:38,757 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 157 transitions. Word has length 60 [2020-11-12 06:28:38,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:28:38,758 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 157 transitions. [2020-11-12 06:28:38,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:38,758 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 157 transitions. [2020-11-12 06:28:38,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 06:28:38,759 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:28:38,759 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 06:28:38,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 06:28:38,765 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:28:38,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:28:38,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1041614598, now seen corresponding path program 1 times [2020-11-12 06:28:38,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:28:38,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659475670] [2020-11-12 06:28:38,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:28:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 06:28:38,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 06:28:38,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659475670] [2020-11-12 06:28:38,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 06:28:38,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 06:28:38,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634847157] [2020-11-12 06:28:38,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 06:28:38,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 06:28:38,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 06:28:38,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-12 06:28:38,940 INFO L87 Difference]: Start difference. First operand 129 states and 157 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:39,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 06:28:39,055 INFO L93 Difference]: Finished difference Result 141 states and 168 transitions. [2020-11-12 06:28:39,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 06:28:39,056 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-11-12 06:28:39,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 06:28:39,057 INFO L225 Difference]: With dead ends: 141 [2020-11-12 06:28:39,057 INFO L226 Difference]: Without dead ends: 80 [2020-11-12 06:28:39,058 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-11-12 06:28:39,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-12 06:28:39,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-11-12 06:28:39,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 79 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:39,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2020-11-12 06:28:39,062 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 61 [2020-11-12 06:28:39,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 06:28:39,062 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2020-11-12 06:28:39,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 06:28:39,062 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2020-11-12 06:28:39,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-12 06:28:39,063 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 06:28:39,063 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 06:28:39,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 06:28:39,064 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 06:28:39,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 06:28:39,064 INFO L82 PathProgramCache]: Analyzing trace with hash 949220092, now seen corresponding path program 2 times [2020-11-12 06:28:39,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 06:28:39,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020081043] [2020-11-12 06:28:39,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 06:28:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-12 06:28:39,091 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-12 06:28:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-12 06:28:39,118 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-12 06:28:39,163 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-12 06:28:39,163 INFO L595 BasicCegarLoop]: Counterexample might be feasible [2020-11-12 06:28:39,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 06:28:39,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:28:39 BasicIcfg [2020-11-12 06:28:39,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 06:28:39,277 INFO L168 Benchmark]: Toolchain (without parser) took 3669.65 ms. Allocated memory was 302.0 MB in the beginning and 377.5 MB in the end (delta: 75.5 MB). Free memory was 276.3 MB in the beginning and 293.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 60.2 MB. Max. memory is 16.0 GB. [2020-11-12 06:28:39,279 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 06:28:39,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 596.50 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 274.7 MB in the end (delta: 972.8 kB). Peak memory consumption was 28.9 MB. Max. memory is 16.0 GB. [2020-11-12 06:28:39,281 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.38 ms. Allocated memory is still 302.0 MB. Free memory was 274.7 MB in the beginning and 272.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 06:28:39,283 INFO L168 Benchmark]: Boogie Preprocessor took 29.54 ms. Allocated memory is still 302.0 MB. Free memory was 272.4 MB in the beginning and 271.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 06:28:39,284 INFO L168 Benchmark]: RCFGBuilder took 505.94 ms. Allocated memory is still 302.0 MB. Free memory was 271.2 MB in the beginning and 244.6 MB in the end (delta: 26.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2020-11-12 06:28:39,287 INFO L168 Benchmark]: TraceAbstraction took 2438.06 ms. Allocated memory was 302.0 MB in the beginning and 377.5 MB in the end (delta: 75.5 MB). Free memory was 244.3 MB in the beginning and 293.7 MB in the end (delta: -49.4 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.0 GB. [2020-11-12 06:28:39,291 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 302.0 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 596.50 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 274.7 MB in the end (delta: 972.8 kB). Peak memory consumption was 28.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 85.38 ms. Allocated memory is still 302.0 MB. Free memory was 274.7 MB in the beginning and 272.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.54 ms. Allocated memory is still 302.0 MB. Free memory was 272.4 MB in the beginning and 271.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 505.94 ms. Allocated memory is still 302.0 MB. Free memory was 271.2 MB in the beginning and 244.6 MB in the end (delta: 26.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2438.06 ms. Allocated memory was 302.0 MB in the beginning and 377.5 MB in the end (delta: 75.5 MB). Free memory was 244.3 MB in the beginning and 293.7 MB in the end (delta: -49.4 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 683]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L697] 0 volatile int stoppingFlag; VAL [stoppingFlag=0] [L698] 0 volatile int pendingIo; VAL [pendingIo=0, stoppingFlag=0] [L699] 0 volatile int stoppingEvent; VAL [pendingIo=0, stoppingEvent=0, stoppingFlag=0] [L700] 0 volatile int stopped; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0] [L740] 0 pthread_t t; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=0] [L741] 0 pendingIo = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L742] 0 stoppingFlag = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L743] 0 stoppingEvent = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L744] 0 stopped = 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L724] 0 int status; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L702] COND FALSE 0 !(\read(stoppingFlag)) VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L733] 1 stoppingFlag = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L717] 1 int pending; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L711] 1 pendingIo-- [L712] 1 int tmp = pendingIo; VAL [pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L705] 0 pendingIo = pendingIo + 1 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L707] 0 return 0; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L725] 0 status = BCSP_IoIncrement() VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L726] COND TRUE 0 status == 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L714] 1 return tmp; VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L718] 1 pending = dec() VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L719] COND TRUE 1 pending == 0 VAL [pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L720] 1 stoppingEvent = 1 VAL [pendingIo=1, stopped=0, stoppingEvent=1, stoppingFlag=1] [L686] COND FALSE 1 !(!cond) VAL [pendingIo=1, stopped=0, stoppingEvent=1, stoppingFlag=1] [L736] 1 stopped = 1 VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L689] COND TRUE 0 !(cond) VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L683] COND FALSE 0 !(0) VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] [L683] 0 __assert_fail ("0", "assert.h", 6, __extension__ __PRETTY_FUNCTION__) VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 432 SDtfs, 204 SDslu, 945 SDs, 0 SdLazy, 108 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1101occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 203 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 324 NumberOfCodeBlocks, 324 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 258 ConstructedInterpolants, 0 QuantifiedInterpolants, 25975 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...