/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_NONE.epf -i ../../../trunk/examples/svcomp/ldv-regression/test22-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:32:27,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:32:27,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:32:27,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:32:27,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:32:27,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:32:27,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:32:27,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:32:27,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:32:27,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:32:27,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:32:27,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:32:27,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:32:27,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:32:27,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:32:27,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:32:27,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:32:27,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:32:27,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:32:27,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:32:27,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:32:27,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:32:27,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:32:27,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:32:27,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:32:27,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:32:27,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:32:27,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:32:27,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:32:27,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:32:27,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:32:27,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:32:27,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:32:27,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:32:27,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:32:27,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:32:27,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:32:27,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:32:27,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:32:27,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:32:27,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:32:27,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:32:27,329 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:32:27,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:32:27,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:32:27,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:32:27,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:32:27,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:32:27,330 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:32:27,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:32:27,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:32:27,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:32:27,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:32:27,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:32:27,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:32:27,347 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:32:27,347 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:32:27,347 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:32:27,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:32:27,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:32:27,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:32:27,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:32:27,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:32:27,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:32:27,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:32:27,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:32:27,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:32:27,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:32:27,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:32:27,348 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:32:27,349 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:32:27,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:32:27,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:32:27,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:32:27,350 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:32:27,350 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:32:27,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:32:27,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:32:27,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:32:27,695 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:32:27,695 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:32:27,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-2.c [2022-01-10 23:32:27,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be6acd385/1dad969aac0d4e6fb419c0c3a46250ad/FLAGab0829e07 [2022-01-10 23:32:28,045 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:32:28,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test22-2.c [2022-01-10 23:32:28,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be6acd385/1dad969aac0d4e6fb419c0c3a46250ad/FLAGab0829e07 [2022-01-10 23:32:28,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be6acd385/1dad969aac0d4e6fb419c0c3a46250ad [2022-01-10 23:32:28,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:32:28,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:32:28,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:32:28,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:32:28,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:32:28,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:32:28" (1/1) ... [2022-01-10 23:32:28,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@488b600c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:28, skipping insertion in model container [2022-01-10 23:32:28,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:32:28" (1/1) ... [2022-01-10 23:32:28,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:32:28,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:32:28,714 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test22-2.c[1029,1042] [2022-01-10 23:32:28,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:32:28,727 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:32:28,749 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test22-2.c[1029,1042] [2022-01-10 23:32:28,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:32:28,767 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:32:28,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:28 WrapperNode [2022-01-10 23:32:28,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:32:28,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:32:28,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:32:28,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:32:28,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:28" (1/1) ... [2022-01-10 23:32:28,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:28" (1/1) ... [2022-01-10 23:32:28,793 INFO L137 Inliner]: procedures = 19, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 100 [2022-01-10 23:32:28,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:32:28,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:32:28,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:32:28,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:32:28,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:28" (1/1) ... [2022-01-10 23:32:28,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:28" (1/1) ... [2022-01-10 23:32:28,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:28" (1/1) ... [2022-01-10 23:32:28,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:28" (1/1) ... [2022-01-10 23:32:28,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:28" (1/1) ... [2022-01-10 23:32:28,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:28" (1/1) ... [2022-01-10 23:32:28,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:28" (1/1) ... [2022-01-10 23:32:28,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:32:28,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:32:28,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:32:28,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:32:28,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:28" (1/1) ... [2022-01-10 23:32:28,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:32:28,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:32:28,866 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 23:32:28,885 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 23:32:28,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:32:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:32:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 23:32:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 23:32:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:32:28,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:32:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 23:32:28,946 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:32:28,947 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:32:29,102 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:32:29,106 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:32:29,106 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:32:29,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:32:29 BoogieIcfgContainer [2022-01-10 23:32:29,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:32:29,108 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:32:29,108 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:32:29,109 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:32:29,111 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:32:29" (1/1) ... [2022-01-10 23:32:29,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:32:29 BasicIcfg [2022-01-10 23:32:29,186 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:32:29,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:32:29,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:32:29,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:32:29,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:32:28" (1/4) ... [2022-01-10 23:32:29,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764780d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:32:29, skipping insertion in model container [2022-01-10 23:32:29,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:32:28" (2/4) ... [2022-01-10 23:32:29,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764780d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:32:29, skipping insertion in model container [2022-01-10 23:32:29,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:32:29" (3/4) ... [2022-01-10 23:32:29,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764780d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:32:29, skipping insertion in model container [2022-01-10 23:32:29,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:32:29" (4/4) ... [2022-01-10 23:32:29,191 INFO L111 eAbstractionObserver]: Analyzing ICFG test22-2.cTransformedIcfg [2022-01-10 23:32:29,195 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:32:29,195 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 23:32:29,227 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:32:29,232 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 23:32:29,232 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 23:32:29,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 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 23:32:29,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 23:32:29,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:32:29,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:32:29,245 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:32:29,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:32:29,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1586389736, now seen corresponding path program 1 times [2022-01-10 23:32:29,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:32:29,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20215048] [2022-01-10 23:32:29,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:32:29,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:32:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:32:29,468 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 23:32:29,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:32:29,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20215048] [2022-01-10 23:32:29,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20215048] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:32:29,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:32:29,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:32:29,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991016958] [2022-01-10 23:32:29,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:32:29,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:32:29,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:32:29,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:32:29,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:32:29,507 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 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 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 23:32:29,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:32:29,520 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-01-10 23:32:29,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:32:29,524 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2022-01-10 23:32:29,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:32:29,530 INFO L225 Difference]: With dead ends: 34 [2022-01-10 23:32:29,530 INFO L226 Difference]: Without dead ends: 21 [2022-01-10 23:32:29,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:32:29,537 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:32:29,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:32:29,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-10 23:32:29,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-01-10 23:32:29,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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 23:32:29,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-01-10 23:32:29,574 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 19 [2022-01-10 23:32:29,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:32:29,575 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-01-10 23:32:29,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 23:32:29,576 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-01-10 23:32:29,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 23:32:29,577 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:32:29,577 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] [2022-01-10 23:32:29,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:32:29,577 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:32:29,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:32:29,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1904009934, now seen corresponding path program 1 times [2022-01-10 23:32:29,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:32:29,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324642738] [2022-01-10 23:32:29,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:32:29,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:32:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:32:29,794 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 23:32:29,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:32:29,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324642738] [2022-01-10 23:32:29,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324642738] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:32:29,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:32:29,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 23:32:29,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330884322] [2022-01-10 23:32:29,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:32:29,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:32:29,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:32:29,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:32:29,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:32:29,800 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 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 23:32:30,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:32:30,152 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2022-01-10 23:32:30,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-10 23:32:30,153 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 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 20 [2022-01-10 23:32:30,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:32:30,154 INFO L225 Difference]: With dead ends: 85 [2022-01-10 23:32:30,154 INFO L226 Difference]: Without dead ends: 62 [2022-01-10 23:32:30,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-01-10 23:32:30,156 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 136 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:32:30,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 112 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:32:30,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-01-10 23:32:30,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 24. [2022-01-10 23:32:30,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 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 23:32:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-01-10 23:32:30,161 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 20 [2022-01-10 23:32:30,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:32:30,162 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-01-10 23:32:30,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 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 23:32:30,162 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-01-10 23:32:30,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 23:32:30,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:32:30,163 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] [2022-01-10 23:32:30,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:32:30,163 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:32:30,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:32:30,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1398451309, now seen corresponding path program 1 times [2022-01-10 23:32:30,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:32:30,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142231799] [2022-01-10 23:32:30,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:32:30,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:32:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:32:30,841 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 23:32:30,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:32:30,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142231799] [2022-01-10 23:32:30,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142231799] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:32:30,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:32:30,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-10 23:32:30,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976161396] [2022-01-10 23:32:30,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:32:30,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 23:32:30,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:32:30,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 23:32:30,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-01-10 23:32:30,844 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 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 23:32:31,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:32:31,628 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2022-01-10 23:32:31,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 23:32:31,629 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 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 20 [2022-01-10 23:32:31,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:32:31,631 INFO L225 Difference]: With dead ends: 69 [2022-01-10 23:32:31,631 INFO L226 Difference]: Without dead ends: 64 [2022-01-10 23:32:31,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2022-01-10 23:32:31,636 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 126 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:32:31,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 132 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:32:31,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-10 23:32:31,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 33. [2022-01-10 23:32:31,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.15625) internal successors, (37), 32 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 23:32:31,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-01-10 23:32:31,651 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2022-01-10 23:32:31,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:32:31,652 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-01-10 23:32:31,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 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 23:32:31,652 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-01-10 23:32:31,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 23:32:31,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:32:31,653 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] [2022-01-10 23:32:31,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:32:31,653 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:32:31,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:32:31,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1099564628, now seen corresponding path program 1 times [2022-01-10 23:32:31,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:32:31,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233748861] [2022-01-10 23:32:31,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:32:31,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:32:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 23:32:31,691 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 23:32:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 23:32:31,726 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-10 23:32:31,726 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 23:32:31,726 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 23:32:31,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:32:31,730 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-10 23:32:31,731 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 23:32:31,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:32:31 BasicIcfg [2022-01-10 23:32:31,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 23:32:31,762 INFO L158 Benchmark]: Toolchain (without parser) took 3270.28ms. Allocated memory was 173.0MB in the beginning and 281.0MB in the end (delta: 108.0MB). Free memory was 117.8MB in the beginning and 146.6MB in the end (delta: -28.8MB). Peak memory consumption was 79.9MB. Max. memory is 8.0GB. [2022-01-10 23:32:31,762 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 173.0MB. Free memory was 133.8MB in the beginning and 133.7MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 23:32:31,762 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.30ms. Allocated memory was 173.0MB in the beginning and 281.0MB in the end (delta: 108.0MB). Free memory was 117.6MB in the beginning and 253.4MB in the end (delta: -135.8MB). Peak memory consumption was 6.9MB. Max. memory is 8.0GB. [2022-01-10 23:32:31,762 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.60ms. Allocated memory is still 281.0MB. Free memory was 253.1MB in the beginning and 251.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 23:32:31,763 INFO L158 Benchmark]: Boogie Preprocessor took 20.01ms. Allocated memory is still 281.0MB. Free memory was 251.6MB in the beginning and 250.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 23:32:31,763 INFO L158 Benchmark]: RCFGBuilder took 293.35ms. Allocated memory is still 281.0MB. Free memory was 250.0MB in the beginning and 236.4MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-01-10 23:32:31,763 INFO L158 Benchmark]: IcfgTransformer took 77.59ms. Allocated memory is still 281.0MB. Free memory was 236.4MB in the beginning and 232.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-01-10 23:32:31,763 INFO L158 Benchmark]: TraceAbstraction took 2574.28ms. Allocated memory is still 281.0MB. Free memory was 231.6MB in the beginning and 146.6MB in the end (delta: 85.1MB). Peak memory consumption was 84.5MB. Max. memory is 8.0GB. [2022-01-10 23:32:31,764 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 173.0MB. Free memory was 133.8MB in the beginning and 133.7MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 275.30ms. Allocated memory was 173.0MB in the beginning and 281.0MB in the end (delta: 108.0MB). Free memory was 117.6MB in the beginning and 253.4MB in the end (delta: -135.8MB). Peak memory consumption was 6.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.60ms. Allocated memory is still 281.0MB. Free memory was 253.1MB in the beginning and 251.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.01ms. Allocated memory is still 281.0MB. Free memory was 251.6MB in the beginning and 250.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 293.35ms. Allocated memory is still 281.0MB. Free memory was 250.0MB in the beginning and 236.4MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * IcfgTransformer took 77.59ms. Allocated memory is still 281.0MB. Free memory was 236.4MB in the beginning and 232.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * TraceAbstraction took 2574.28ms. Allocated memory is still 281.0MB. Free memory was 231.6MB in the beginning and 146.6MB in the end (delta: 85.1MB). Peak memory consumption was 84.5MB. 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: 50]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L11] struct dummy d1, d2; VAL [d1={-4:0}, d2={-3:0}] [L34] CALL init() [L15] d1.a = __VERIFIER_nondet_int() [L16] d1.b = __VERIFIER_nondet_int() [L18] d2.a = __VERIFIER_nondet_int() [L19] d2.b = __VERIFIER_nondet_int() [L34] RET init() [L35] CALL, EXPR get_dummy() [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=-1, __VERIFIER_nondet_bool() ? &d1 : &d2={-4:0}, d1={-4:0}, d2={-3:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] RET, EXPR get_dummy() [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L35] CALL, EXPR get_dummy() [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=-1, __VERIFIER_nondet_bool() ? &d1 : &d2={-4:0}, d1={-4:0}, d2={-3:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] RET, EXPR get_dummy() [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L35] CALL, EXPR get_dummy() [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=0, __VERIFIER_nondet_bool() ? &d1 : &d2={-3:0}, d1={-4:0}, d2={-3:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] RET, EXPR get_dummy() [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L36] int i = __VERIFIER_nondet_int(); [L37] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L37] EXPR (*pd2).a [L37] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 VAL [(*pd2).a=-2, d1={-4:0}, d2={-3:0}, i=0, pd1={-4:0}, pd1 != 0 && pd1 == pd2 && (*pd2).a > 0=1, pd2={-4:0}, pd3={-3:0}] [L37] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L38] int *pa = &pd1->a; [L39] EXPR pd3->a [L39] i = pd3->a - 10 [L40] EXPR \read(*pa) VAL [\read(*pa)=-2, d1={-4:0}, d2={-3:0}, i=2147483647, pa={-4:0}, pd1={-4:0}, pd2={-4:0}, pd3={-3:0}] [L40] COND FALSE !(i < *pa) [L43] CALL, EXPR check(pd2, i) [L29] EXPR s1->a [L29] return s1->a == i; [L43] RET, EXPR check(pd2, i) [L43] COND TRUE !check(pd2, i) [L50] reach_error() VAL [d1={-4:0}, d2={-3:0}, i=2147483647, pa={-4:0}, pd1={-4:0}, pd2={-4:0}, pd3={-3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 262 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 262 mSDsluCounter, 274 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 211 mSDsCounter, 87 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 391 IncrementalHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 87 mSolverCounterUnsat, 63 mSDtfsCounter, 391 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=3, InterpolantAutomatonStates: 38, 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, 3 MinimizatonAttempts, 69 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 452 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 23:32:31,777 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...