/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/recursive/BallRajamani-SPIN2000-Fig1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:19:33,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:19:33,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:19:33,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:19:33,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:19:33,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:19:33,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:19:33,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:19:33,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:19:33,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:19:33,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:19:33,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:19:33,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:19:33,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:19:33,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:19:33,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:19:33,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:19:33,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:19:33,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:19:33,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:19:33,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:19:33,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:19:33,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:19:33,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:19:33,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:19:33,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:19:33,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:19:33,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:19:33,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:19:33,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:19:33,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:19:33,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:19:33,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:19:33,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:19:33,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:19:33,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:19:33,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:19:33,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:19:33,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:19:33,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:19:33,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:19:33,135 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 18:19:33,148 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:19:33,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:19:33,148 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:19:33,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:19:33,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:19:33,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:19:33,149 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:19:33,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:19:33,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:19:33,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:19:33,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:19:33,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:19:33,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:19:33,150 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:19:33,150 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:19:33,150 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:19:33,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:19:33,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:19:33,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:19:33,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:19:33,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:19:33,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:19:33,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:19:33,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:19:33,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:19:33,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:19:33,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:19:33,151 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:19:33,151 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:19:33,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:19:33,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:19:33,152 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:19:33,152 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:19:33,152 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:19:33,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:19:33,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:19:33,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:19:33,339 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:19:33,340 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:19:33,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c [2022-01-10 18:19:33,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88b053cd0/95a65d1cffab4340b37381fd564b6446/FLAG2adc91823 [2022-01-10 18:19:33,735 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:19:33,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c [2022-01-10 18:19:33,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88b053cd0/95a65d1cffab4340b37381fd564b6446/FLAG2adc91823 [2022-01-10 18:19:33,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88b053cd0/95a65d1cffab4340b37381fd564b6446 [2022-01-10 18:19:33,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:19:33,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:19:33,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:19:33,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:19:33,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:19:33,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:19:33" (1/1) ... [2022-01-10 18:19:33,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f60101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:33, skipping insertion in model container [2022-01-10 18:19:33,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:19:33" (1/1) ... [2022-01-10 18:19:33,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:19:33,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:19:33,878 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c[718,731] [2022-01-10 18:19:33,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:19:33,896 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:19:33,905 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c[718,731] [2022-01-10 18:19:33,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:19:33,919 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:19:33,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:33 WrapperNode [2022-01-10 18:19:33,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:19:33,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:19:33,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:19:33,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:19:33,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:33" (1/1) ... [2022-01-10 18:19:33,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:33" (1/1) ... [2022-01-10 18:19:33,967 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-01-10 18:19:33,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:19:33,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:19:33,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:19:33,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:19:33,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:33" (1/1) ... [2022-01-10 18:19:33,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:33" (1/1) ... [2022-01-10 18:19:33,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:33" (1/1) ... [2022-01-10 18:19:33,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:33" (1/1) ... [2022-01-10 18:19:33,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:33" (1/1) ... [2022-01-10 18:19:33,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:33" (1/1) ... [2022-01-10 18:19:33,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:33" (1/1) ... [2022-01-10 18:19:33,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:19:33,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:19:33,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:19:33,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:19:33,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:33" (1/1) ... [2022-01-10 18:19:33,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:19:33,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:19:34,010 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 18:19:34,017 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 18:19:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure A [2022-01-10 18:19:34,036 INFO L138 BoogieDeclarations]: Found implementation of procedure A [2022-01-10 18:19:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:19:34,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:19:34,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:19:34,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:19:34,086 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:19:34,087 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:19:34,137 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:19:34,141 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:19:34,141 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 18:19:34,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:19:34 BoogieIcfgContainer [2022-01-10 18:19:34,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:19:34,143 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:19:34,143 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:19:34,155 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:19:34,157 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:19:34" (1/1) ... [2022-01-10 18:19:34,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:19:34 BasicIcfg [2022-01-10 18:19:34,225 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:19:34,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:19:34,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:19:34,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:19:34,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:19:33" (1/4) ... [2022-01-10 18:19:34,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27212890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:19:34, skipping insertion in model container [2022-01-10 18:19:34,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:33" (2/4) ... [2022-01-10 18:19:34,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27212890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:19:34, skipping insertion in model container [2022-01-10 18:19:34,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:19:34" (3/4) ... [2022-01-10 18:19:34,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27212890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:19:34, skipping insertion in model container [2022-01-10 18:19:34,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:19:34" (4/4) ... [2022-01-10 18:19:34,230 INFO L111 eAbstractionObserver]: Analyzing ICFG BallRajamani-SPIN2000-Fig1.cTransformedIcfg [2022-01-10 18:19:34,234 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:19:34,234 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:19:34,287 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:19:34,301 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 18:19:34,301 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:19:34,316 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-10 18:19:34,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 18:19:34,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:19:34,320 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:19:34,321 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:19:34,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:19:34,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2088933744, now seen corresponding path program 1 times [2022-01-10 18:19:34,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:19:34,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798962359] [2022-01-10 18:19:34,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:19:34,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:19:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:34,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-10 18:19:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:34,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-01-10 18:19:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 18:19:34,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:19:34,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798962359] [2022-01-10 18:19:34,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798962359] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:19:34,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233617562] [2022-01-10 18:19:34,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:19:34,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:19:34,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:19:34,522 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 18:19:34,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 18:19:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:19:34,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 18:19:34,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 18:19:34,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 18:19:34,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 18:19:34,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233617562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:19:34,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 18:19:34,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-01-10 18:19:34,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797593431] [2022-01-10 18:19:34,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:19:34,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:19:34,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:19:34,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:19:34,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:19:34,687 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 18:19:34,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:19:34,764 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2022-01-10 18:19:34,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:19:34,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2022-01-10 18:19:34,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:19:34,775 INFO L225 Difference]: With dead ends: 39 [2022-01-10 18:19:34,776 INFO L226 Difference]: Without dead ends: 17 [2022-01-10 18:19:34,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:19:34,782 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:19:34,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 41 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:19:34,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-10 18:19:34,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-10 18:19:34,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-10 18:19:34,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-01-10 18:19:34,814 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 16 [2022-01-10 18:19:34,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:19:34,814 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-01-10 18:19:34,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 18:19:34,815 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-01-10 18:19:34,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 18:19:34,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:19:34,817 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:19:34,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 18:19:35,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-01-10 18:19:35,020 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:19:35,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:19:35,020 INFO L85 PathProgramCache]: Analyzing trace with hash -560602208, now seen corresponding path program 1 times [2022-01-10 18:19:35,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:19:35,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998535115] [2022-01-10 18:19:35,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:19:35,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:19:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 18:19:35,050 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 18:19:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 18:19:35,125 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-10 18:19:35,125 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 18:19:35,126 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 18:19:35,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:19:35,133 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-10 18:19:35,136 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 18:19:35,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:19:35 BasicIcfg [2022-01-10 18:19:35,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 18:19:35,169 INFO L158 Benchmark]: Toolchain (without parser) took 1408.99ms. Allocated memory was 173.0MB in the beginning and 241.2MB in the end (delta: 68.2MB). Free memory was 116.2MB in the beginning and 150.4MB in the end (delta: -34.2MB). Peak memory consumption was 32.0MB. Max. memory is 8.0GB. [2022-01-10 18:19:35,169 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 173.0MB. Free memory is still 132.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 18:19:35,169 INFO L158 Benchmark]: CACSL2BoogieTranslator took 158.00ms. Allocated memory was 173.0MB in the beginning and 241.2MB in the end (delta: 68.2MB). Free memory was 115.9MB in the beginning and 215.9MB in the end (delta: -100.0MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. [2022-01-10 18:19:35,169 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.83ms. Allocated memory is still 241.2MB. Free memory was 215.9MB in the beginning and 214.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 18:19:35,170 INFO L158 Benchmark]: Boogie Preprocessor took 17.86ms. Allocated memory is still 241.2MB. Free memory was 214.4MB in the beginning and 213.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 18:19:35,170 INFO L158 Benchmark]: RCFGBuilder took 156.04ms. Allocated memory is still 241.2MB. Free memory was 213.3MB in the beginning and 203.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-10 18:19:35,170 INFO L158 Benchmark]: IcfgTransformer took 82.30ms. Allocated memory is still 241.2MB. Free memory was 203.3MB in the beginning and 200.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-10 18:19:35,170 INFO L158 Benchmark]: TraceAbstraction took 941.50ms. Allocated memory is still 241.2MB. Free memory was 199.7MB in the beginning and 150.4MB in the end (delta: 49.3MB). Peak memory consumption was 49.3MB. Max. memory is 8.0GB. [2022-01-10 18:19:35,172 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 173.0MB. Free memory is still 132.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 158.00ms. Allocated memory was 173.0MB in the beginning and 241.2MB in the end (delta: 68.2MB). Free memory was 115.9MB in the beginning and 215.9MB in the end (delta: -100.0MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.83ms. Allocated memory is still 241.2MB. Free memory was 215.9MB in the beginning and 214.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.86ms. Allocated memory is still 241.2MB. Free memory was 214.4MB in the beginning and 213.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 156.04ms. Allocated memory is still 241.2MB. Free memory was 213.3MB in the beginning and 203.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 82.30ms. Allocated memory is still 241.2MB. Free memory was 203.3MB in the beginning and 200.2MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 941.50ms. Allocated memory is still 241.2MB. Free memory was 199.7MB in the beginning and 150.4MB in the end (delta: 49.3MB). Peak memory consumption was 49.3MB. 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: 33]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int g; VAL [g=0] [L28] int g = __VERIFIER_nondet_int(); [L29] int h = !g; VAL [g=0, g=1, h=0] [L30] CALL A(g,h) VAL [\old(a1)=1, \old(a2)=0, \old(g)=0, g=0] [L19] COND TRUE \read(a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=0, a1=1, a2=0, g=0] [L20] CALL A(a2,a1) VAL [\old(a1)=0, \old(a2)=1, \old(g)=0, g=0] [L19] COND FALSE !(\read(a1)) [L22] g = a2 VAL [\old(a1)=0, \old(a2)=1, \old(g)=0, a1=0, a2=1, g=1] [L20] RET A(a2,a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=0, A(a2,a1)=0, a1=1, a2=0, g=1] [L30] RET A(g,h) VAL [A(g,h)=0, g=1, g=1, h=0] [L31] CALL A(g,h) VAL [\old(a1)=1, \old(a2)=0, \old(g)=1, g=1] [L19] COND TRUE \read(a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=1, a1=1, a2=0, g=1] [L20] CALL A(a2,a1) VAL [\old(a1)=0, \old(a2)=1, \old(g)=1, g=1] [L19] COND FALSE !(\read(a1)) [L22] g = a2 VAL [\old(a1)=0, \old(a2)=1, \old(g)=1, a1=0, a2=1, g=1] [L20] RET A(a2,a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=1, A(a2,a1)=0, a1=1, a2=0, g=1] [L31] RET A(g,h) VAL [A(g,h)=0, g=1, g=1, h=0] [L32] COND TRUE \read(g) VAL [g=1, g=1, h=0] [L33] reach_error() VAL [g=1, g=1, h=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36 IncrementalHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 14 mSDtfsCounter, 36 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 70 SizeOfPredicates, 1 NumberOfNonLiveVariables, 143 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 5/8 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 18:19:35,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...