/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:26:53,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:26:53,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:26:53,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:26:53,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:26:53,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:26:53,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:26:53,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:26:53,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:26:53,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:26:53,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:26:53,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:26:53,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:26:53,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:26:53,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:26:53,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:26:53,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:26:53,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:26:53,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:26:53,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:26:53,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:26:53,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:26:53,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:26:53,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:26:53,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:26:53,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:26:53,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:26:53,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:26:53,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:26:53,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:26:53,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:26:53,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:26:53,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:26:53,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:26:53,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:26:53,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:26:53,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:26:53,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:26:53,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:26:53,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:26:53,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:26:53,947 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:26:53,977 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:26:53,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:26:53,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:26:53,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:26:53,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:26:53,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:26:53,979 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:26:53,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:26:53,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:26:53,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:26:53,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:26:53,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:26:53,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:26:53,981 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:26:53,981 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:26:53,981 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:26:53,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:26:53,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:26:53,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:26:53,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:26:53,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:26:53,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:26:53,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:26:53,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:26:53,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:26:53,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:26:53,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:26:53,982 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:26:53,982 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:26:53,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:26:53,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:26:53,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:26:53,984 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:26:53,984 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:26:54,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:26:54,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:26:54,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:26:54,177 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:26:54,182 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:26:54,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c [2022-01-10 18:26:54,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86b92140c/c77a2a47a40c4375a49a0127734413a1/FLAGc54f49205 [2022-01-10 18:26:54,567 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:26:54,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c [2022-01-10 18:26:54,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86b92140c/c77a2a47a40c4375a49a0127734413a1/FLAGc54f49205 [2022-01-10 18:26:54,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86b92140c/c77a2a47a40c4375a49a0127734413a1 [2022-01-10 18:26:54,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:26:54,991 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:26:54,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:26:54,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:26:54,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:26:54,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:26:54" (1/1) ... [2022-01-10 18:26:54,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1062dc13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:54, skipping insertion in model container [2022-01-10 18:26:54,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:26:54" (1/1) ... [2022-01-10 18:26:55,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:26:55,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:26:55,161 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c[643,656] [2022-01-10 18:26:55,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:26:55,221 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:26:55,232 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_2.cil-2.c[643,656] [2022-01-10 18:26:55,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:26:55,265 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:26:55,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:55 WrapperNode [2022-01-10 18:26:55,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:26:55,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:26:55,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:26:55,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:26:55,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:55" (1/1) ... [2022-01-10 18:26:55,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:55" (1/1) ... [2022-01-10 18:26:55,303 INFO L137 Inliner]: procedures = 29, calls = 32, calls flagged for inlining = 27, calls inlined = 28, statements flattened = 308 [2022-01-10 18:26:55,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:26:55,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:26:55,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:26:55,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:26:55,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:55" (1/1) ... [2022-01-10 18:26:55,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:55" (1/1) ... [2022-01-10 18:26:55,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:55" (1/1) ... [2022-01-10 18:26:55,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:55" (1/1) ... [2022-01-10 18:26:55,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:55" (1/1) ... [2022-01-10 18:26:55,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:55" (1/1) ... [2022-01-10 18:26:55,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:55" (1/1) ... [2022-01-10 18:26:55,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:26:55,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:26:55,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:26:55,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:26:55,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:55" (1/1) ... [2022-01-10 18:26:55,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:26:55,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:26:55,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:26:55,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:26:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:26:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:26:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:26:55,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:26:55,451 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:26:55,452 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:26:55,678 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:26:55,684 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:26:55,684 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-10 18:26:55,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:26:55 BoogieIcfgContainer [2022-01-10 18:26:55,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:26:55,686 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:26:55,687 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:26:55,687 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:26:55,690 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:26:55" (1/1) ... [2022-01-10 18:26:55,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:26:55 BasicIcfg [2022-01-10 18:26:55,851 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:26:55,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:26:55,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:26:55,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:26:55,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:26:54" (1/4) ... [2022-01-10 18:26:55,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218437f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:26:55, skipping insertion in model container [2022-01-10 18:26:55,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:55" (2/4) ... [2022-01-10 18:26:55,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218437f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:26:55, skipping insertion in model container [2022-01-10 18:26:55,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:26:55" (3/4) ... [2022-01-10 18:26:55,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218437f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:26:55, skipping insertion in model container [2022-01-10 18:26:55,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:26:55" (4/4) ... [2022-01-10 18:26:55,857 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-2.cTransformedIcfg [2022-01-10 18:26:55,861 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:26:55,861 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 18:26:55,900 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:26:55,906 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:26:55,906 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 18:26:55,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 104 states have (on average 1.5576923076923077) internal successors, (162), 107 states have internal predecessors, (162), 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) [2022-01-10 18:26:55,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 18:26:55,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:55,933 INFO L514 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] [2022-01-10 18:26:55,934 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:26:55,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:55,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1065041522, now seen corresponding path program 1 times [2022-01-10 18:26:55,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:55,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024206716] [2022-01-10 18:26:55,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:55,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:26:56,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:56,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024206716] [2022-01-10 18:26:56,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024206716] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:56,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:56,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:26:56,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397697302] [2022-01-10 18:26:56,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:56,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:26:56,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:56,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:26:56,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:26:56,308 INFO L87 Difference]: Start difference. First operand has 108 states, 104 states have (on average 1.5576923076923077) internal successors, (162), 107 states have internal predecessors, (162), 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 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2022-01-10 18:26:56,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:56,464 INFO L93 Difference]: Finished difference Result 300 states and 454 transitions. [2022-01-10 18:26:56,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:26:56,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2022-01-10 18:26:56,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:56,485 INFO L225 Difference]: With dead ends: 300 [2022-01-10 18:26:56,485 INFO L226 Difference]: Without dead ends: 197 [2022-01-10 18:26:56,488 INFO L932 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 [2022-01-10 18:26:56,491 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 124 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:26:56,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 256 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:26:56,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-01-10 18:26:56,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 191. [2022-01-10 18:26:56,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 188 states have (on average 1.4148936170212767) internal successors, (266), 190 states have internal predecessors, (266), 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) [2022-01-10 18:26:56,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 266 transitions. [2022-01-10 18:26:56,539 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 266 transitions. Word has length 37 [2022-01-10 18:26:56,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:56,540 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 266 transitions. [2022-01-10 18:26:56,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2022-01-10 18:26:56,540 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 266 transitions. [2022-01-10 18:26:56,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 18:26:56,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:56,545 INFO L514 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] [2022-01-10 18:26:56,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:26:56,545 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:26:56,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:56,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1221754508, now seen corresponding path program 1 times [2022-01-10 18:26:56,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:56,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693142876] [2022-01-10 18:26:56,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:56,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:56,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:26:56,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:56,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693142876] [2022-01-10 18:26:56,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693142876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:56,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:56,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:26:56,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136193217] [2022-01-10 18:26:56,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:56,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:26:56,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:56,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:26:56,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:26:56,671 INFO L87 Difference]: Start difference. First operand 191 states and 266 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-01-10 18:26:56,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:56,773 INFO L93 Difference]: Finished difference Result 499 states and 696 transitions. [2022-01-10 18:26:56,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:26:56,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2022-01-10 18:26:56,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:56,781 INFO L225 Difference]: With dead ends: 499 [2022-01-10 18:26:56,781 INFO L226 Difference]: Without dead ends: 345 [2022-01-10 18:26:56,788 INFO L932 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 [2022-01-10 18:26:56,789 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 416 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:26:56,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 768 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:26:56,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-01-10 18:26:56,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 197. [2022-01-10 18:26:56,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 194 states have (on average 1.3917525773195876) internal successors, (270), 196 states have internal predecessors, (270), 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) [2022-01-10 18:26:56,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 270 transitions. [2022-01-10 18:26:56,829 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 270 transitions. Word has length 37 [2022-01-10 18:26:56,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:56,829 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 270 transitions. [2022-01-10 18:26:56,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-01-10 18:26:56,830 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 270 transitions. [2022-01-10 18:26:56,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 18:26:56,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:56,833 INFO L514 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] [2022-01-10 18:26:56,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:26:56,837 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:26:56,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:56,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1035156499, now seen corresponding path program 1 times [2022-01-10 18:26:56,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:56,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701606200] [2022-01-10 18:26:56,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:56,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:56,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:26:56,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:56,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701606200] [2022-01-10 18:26:56,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701606200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:56,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:56,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:26:56,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897409418] [2022-01-10 18:26:56,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:56,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:26:56,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:56,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:26:56,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:26:56,940 INFO L87 Difference]: Start difference. First operand 197 states and 270 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-01-10 18:26:57,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:57,009 INFO L93 Difference]: Finished difference Result 476 states and 656 transitions. [2022-01-10 18:26:57,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:26:57,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2022-01-10 18:26:57,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:57,011 INFO L225 Difference]: With dead ends: 476 [2022-01-10 18:26:57,011 INFO L226 Difference]: Without dead ends: 333 [2022-01-10 18:26:57,015 INFO L932 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 [2022-01-10 18:26:57,020 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 358 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:26:57,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 730 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:26:57,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-01-10 18:26:57,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 203. [2022-01-10 18:26:57,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 200 states have (on average 1.37) internal successors, (274), 202 states have internal predecessors, (274), 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) [2022-01-10 18:26:57,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 274 transitions. [2022-01-10 18:26:57,042 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 274 transitions. Word has length 37 [2022-01-10 18:26:57,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:57,042 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 274 transitions. [2022-01-10 18:26:57,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2022-01-10 18:26:57,042 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 274 transitions. [2022-01-10 18:26:57,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 18:26:57,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:57,043 INFO L514 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] [2022-01-10 18:26:57,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:26:57,044 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:26:57,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:57,044 INFO L85 PathProgramCache]: Analyzing trace with hash 524622322, now seen corresponding path program 1 times [2022-01-10 18:26:57,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:57,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146603743] [2022-01-10 18:26:57,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:57,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 18:26:57,081 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 18:26:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 18:26:57,136 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-10 18:26:57,136 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 18:26:57,137 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-10 18:26:57,138 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-10 18:26:57,139 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-10 18:26:57,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:26:57,142 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-10 18:26:57,144 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 18:26:57,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:26:57 BasicIcfg [2022-01-10 18:26:57,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 18:26:57,248 INFO L158 Benchmark]: Toolchain (without parser) took 2257.01ms. Allocated memory was 195.0MB in the beginning and 296.7MB in the end (delta: 101.7MB). Free memory was 139.6MB in the beginning and 136.4MB in the end (delta: 3.2MB). Peak memory consumption was 105.6MB. Max. memory is 8.0GB. [2022-01-10 18:26:57,249 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 195.0MB. Free memory is still 156.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 18:26:57,249 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.69ms. Allocated memory was 195.0MB in the beginning and 296.7MB in the end (delta: 101.7MB). Free memory was 139.4MB in the beginning and 267.4MB in the end (delta: -128.1MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. [2022-01-10 18:26:57,249 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.49ms. Allocated memory is still 296.7MB. Free memory was 267.4MB in the beginning and 265.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 18:26:57,250 INFO L158 Benchmark]: Boogie Preprocessor took 25.56ms. Allocated memory is still 296.7MB. Free memory was 265.4MB in the beginning and 263.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 18:26:57,250 INFO L158 Benchmark]: RCFGBuilder took 355.81ms. Allocated memory is still 296.7MB. Free memory was 263.3MB in the beginning and 246.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-01-10 18:26:57,250 INFO L158 Benchmark]: IcfgTransformer took 164.65ms. Allocated memory is still 296.7MB. Free memory was 246.5MB in the beginning and 239.7MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2022-01-10 18:26:57,251 INFO L158 Benchmark]: TraceAbstraction took 1395.18ms. Allocated memory is still 296.7MB. Free memory was 239.2MB in the beginning and 136.4MB in the end (delta: 102.8MB). Peak memory consumption was 102.8MB. Max. memory is 8.0GB. [2022-01-10 18:26:57,252 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 195.0MB. Free memory is still 156.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 273.69ms. Allocated memory was 195.0MB in the beginning and 296.7MB in the end (delta: 101.7MB). Free memory was 139.4MB in the beginning and 267.4MB in the end (delta: -128.1MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.49ms. Allocated memory is still 296.7MB. Free memory was 267.4MB in the beginning and 265.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.56ms. Allocated memory is still 296.7MB. Free memory was 265.4MB in the beginning and 263.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 355.81ms. Allocated memory is still 296.7MB. Free memory was 263.3MB in the beginning and 246.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * IcfgTransformer took 164.65ms. Allocated memory is still 296.7MB. Free memory was 246.5MB in the beginning and 239.7MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * TraceAbstraction took 1395.18ms. Allocated memory is still 296.7MB. Free memory was 239.2MB in the beginning and 136.4MB in the end (delta: 102.8MB). Peak memory consumption was 102.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 20]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int q_buf_0 ; [L26] int q_free ; [L27] int q_read_ev ; [L28] int q_write_ev ; [L29] int q_req_up ; [L30] int q_ev ; [L51] int p_num_write ; [L52] int p_last_write ; [L53] int p_dw_st ; [L54] int p_dw_pc ; [L55] int p_dw_i ; [L56] int c_num_read ; [L57] int c_last_read ; [L58] int c_dr_st ; [L59] int c_dr_pc ; [L60] int c_dr_i ; [L164] static int a_t ; VAL [a_t=0, c_dr_i=0, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=0, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=0, q_read_ev=0, q_req_up=0, q_write_ev=0] [L466] int __retres1 ; [L470] CALL init_model() [L452] q_free = 1 [L453] q_write_ev = 2 [L454] q_read_ev = q_write_ev [L455] p_num_write = 0 [L456] p_dw_pc = 0 [L457] p_dw_i = 1 [L458] c_num_read = 0 [L459] c_dr_pc = 0 [L460] c_dr_i = 1 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L470] RET init_model() [L471] CALL start_simulation() [L406] int kernel_st ; [L407] int tmp ; [L411] kernel_st = 0 [L412] CALL update_channels() [L222] COND FALSE !((int )q_req_up == 1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L412] RET update_channels() [L413] CALL init_threads() [L237] COND TRUE (int )p_dw_i == 1 [L238] p_dw_st = 0 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L242] COND TRUE (int )c_dr_i == 1 [L243] c_dr_st = 0 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L413] RET init_threads() [L414] CALL fire_delta_events() [L275] COND FALSE !((int )q_read_ev == 0) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L280] COND FALSE !((int )q_write_ev == 0) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L414] RET fire_delta_events() [L415] CALL activate_threads() [L308] int tmp ; [L309] int tmp___0 ; [L313] CALL, EXPR is_do_write_p_triggered() [L62] int __retres1 ; VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L65] COND FALSE !((int )p_dw_pc == 1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L75] __retres1 = 0 VAL [__retres1=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L77] return (__retres1); VAL [\result=0, __retres1=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L313] RET, EXPR is_do_write_p_triggered() [L313] tmp = is_do_write_p_triggered() [L315] COND FALSE !(\read(tmp)) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, tmp=0] [L321] CALL, EXPR is_do_read_c_triggered() [L81] int __retres1 ; VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L84] COND FALSE !((int )c_dr_pc == 1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L94] __retres1 = 0 VAL [__retres1=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L96] return (__retres1); VAL [\result=0, __retres1=0, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L321] RET, EXPR is_do_read_c_triggered() [L321] tmp___0 = is_do_read_c_triggered() [L323] COND FALSE !(\read(tmp___0)) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, tmp=0, tmp___0=0] [L415] RET activate_threads() [L416] CALL reset_delta_events() [L293] COND FALSE !((int )q_read_ev == 1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L298] COND FALSE !((int )q_write_ev == 1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L416] RET reset_delta_events() [L419] COND TRUE 1 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, kernel_st=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L422] kernel_st = 1 [L423] CALL eval() [L333] int tmp ; [L334] int tmp___0 ; [L335] int tmp___1 ; VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L339] COND TRUE 1 VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L342] CALL, EXPR exists_runnable_thread() [L252] int __retres1 ; VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L255] COND TRUE (int )p_dw_st == 0 [L256] __retres1 = 1 VAL [__retres1=1, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L268] return (__retres1); VAL [\result=-1, __retres1=1, a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] [L342] RET, EXPR exists_runnable_thread() [L342] tmp___1 = exists_runnable_thread() [L344] COND TRUE \read(tmp___1) VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2, tmp___1=1] [L349] COND TRUE (int )p_dw_st == 0 [L351] tmp = __VERIFIER_nondet_int() [L353] COND FALSE !(\read(tmp)) [L359] CALL error() [L20] reach_error() VAL [a_t=0, c_dr_i=1, c_dr_pc=0, c_dr_st=0, c_last_read=0, c_num_read=0, p_dw_i=1, p_dw_pc=0, p_dw_st=0, p_last_write=0, p_num_write=0, q_buf_0=0, q_ev=0, q_free=1, q_read_ev=2, q_req_up=0, q_write_ev=2] - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 108 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 898 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 898 mSDsluCounter, 1754 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1306 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94 IncrementalHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 448 mSDtfsCounter, 94 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=203occurred in iteration=3, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 284 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2022-01-10 18:26:57,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...