/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/bitvector/parity.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:18:18,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:18:18,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:18:18,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 14:18:18,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 14:18:18,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 14:18:18,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 14:18:18,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 14:18:18,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 14:18:18,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 14:18:18,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 14:18:18,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 14:18:18,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:18:18,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:18:18,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:18:18,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:18:18,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:18:18,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:18:18,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:18:18,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:18:18,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:18:18,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:18:18,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:18:18,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:18:18,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 14:18:18,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 14:18:18,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 14:18:18,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 14:18:18,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 14:18:18,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 14:18:18,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 14:18:18,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 14:18:18,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 14:18:18,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 14:18:18,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 14:18:18,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 14:18:18,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 14:18:18,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 14:18:18,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:18:18,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:18:18,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:18:18,582 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 14:18:18,602 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:18:18,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:18:18,603 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:18:18,603 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:18:18,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:18:18,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:18:18,607 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:18:18,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:18:18,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:18:18,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:18:18,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:18:18,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:18:18,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:18:18,608 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:18:18,608 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:18:18,608 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:18:18,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:18:18,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:18:18,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:18:18,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:18:18,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:18:18,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:18:18,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:18:18,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:18:18,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:18:18,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:18:18,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:18:18,611 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:18:18,611 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:18:18,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:18:18,611 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:18:18,611 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:18:18,612 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:18:18,612 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:18:18,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:18:18,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:18:18,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:18:18,777 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:18:18,777 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:18:18,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/parity.i [2022-01-10 14:18:18,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/791074145/f1dfc709d9764f958eba31b5a3b83b9b/FLAGa06d1b890 [2022-01-10 14:18:19,183 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:18:19,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/parity.i [2022-01-10 14:18:19,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/791074145/f1dfc709d9764f958eba31b5a3b83b9b/FLAGa06d1b890 [2022-01-10 14:18:19,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/791074145/f1dfc709d9764f958eba31b5a3b83b9b [2022-01-10 14:18:19,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:18:19,198 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:18:19,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:18:19,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:18:19,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:18:19,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:18:19" (1/1) ... [2022-01-10 14:18:19,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe1ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:19, skipping insertion in model container [2022-01-10 14:18:19,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:18:19" (1/1) ... [2022-01-10 14:18:19,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:18:19,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:18:19,449 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/parity.i[1162,1175] [2022-01-10 14:18:19,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:18:19,480 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:18:19,490 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/parity.i[1162,1175] [2022-01-10 14:18:19,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:18:19,523 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:18:19,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:19 WrapperNode [2022-01-10 14:18:19,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:18:19,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:18:19,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:18:19,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:18:19,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:19" (1/1) ... [2022-01-10 14:18:19,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:19" (1/1) ... [2022-01-10 14:18:19,596 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2022-01-10 14:18:19,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:18:19,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:18:19,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:18:19,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:18:19,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:19" (1/1) ... [2022-01-10 14:18:19,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:19" (1/1) ... [2022-01-10 14:18:19,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:19" (1/1) ... [2022-01-10 14:18:19,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:19" (1/1) ... [2022-01-10 14:18:19,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:19" (1/1) ... [2022-01-10 14:18:19,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:19" (1/1) ... [2022-01-10 14:18:19,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:19" (1/1) ... [2022-01-10 14:18:19,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:18:19,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:18:19,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:18:19,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:18:19,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:19" (1/1) ... [2022-01-10 14:18:19,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:18:19,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:18:19,680 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 14:18:19,682 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 14:18:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:18:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:18:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:18:19,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:18:19,762 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:18:19,763 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:18:19,853 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:18:19,857 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:18:19,857 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 14:18:19,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:18:19 BoogieIcfgContainer [2022-01-10 14:18:19,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:18:19,859 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:18:19,859 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:18:19,860 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:18:19,861 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:18:19" (1/1) ... [2022-01-10 14:18:19,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:18:19 BasicIcfg [2022-01-10 14:18:19,914 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:18:19,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:18:19,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:18:19,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:18:19,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:18:19" (1/4) ... [2022-01-10 14:18:19,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cd77d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:18:19, skipping insertion in model container [2022-01-10 14:18:19,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:19" (2/4) ... [2022-01-10 14:18:19,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cd77d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:18:19, skipping insertion in model container [2022-01-10 14:18:19,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:18:19" (3/4) ... [2022-01-10 14:18:19,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cd77d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:18:19, skipping insertion in model container [2022-01-10 14:18:19,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:18:19" (4/4) ... [2022-01-10 14:18:19,918 INFO L111 eAbstractionObserver]: Analyzing ICFG parity.iTransformedIcfg [2022-01-10 14:18:19,922 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:18:19,922 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 14:18:19,948 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:18:19,953 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 14:18:19,953 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 14:18:19,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 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 14:18:19,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 14:18:19,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:18:19,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:18:19,965 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:18:19,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:18:19,969 INFO L85 PathProgramCache]: Analyzing trace with hash 213546186, now seen corresponding path program 1 times [2022-01-10 14:18:19,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:18:19,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919971638] [2022-01-10 14:18:19,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:18:19,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:18:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:18:20,113 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 14:18:20,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:18:20,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919971638] [2022-01-10 14:18:20,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919971638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:18:20,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:18:20,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:18:20,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973647052] [2022-01-10 14:18:20,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:18:20,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 14:18:20,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:18:20,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 14:18:20,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 14:18:20,137 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 14:18:20,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:18:20,145 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2022-01-10 14:18:20,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 14:18:20,147 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-01-10 14:18:20,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:18:20,152 INFO L225 Difference]: With dead ends: 25 [2022-01-10 14:18:20,152 INFO L226 Difference]: Without dead ends: 11 [2022-01-10 14:18:20,154 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 14:18:20,156 INFO L933 BasicCegarLoop]: 17 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, 17 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 14:18:20,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:18:20,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-01-10 14:18:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-01-10 14:18:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 14:18:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-01-10 14:18:20,176 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2022-01-10 14:18:20,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:18:20,176 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-01-10 14:18:20,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 14:18:20,176 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-01-10 14:18:20,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 14:18:20,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:18:20,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:18:20,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:18:20,177 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:18:20,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:18:20,178 INFO L85 PathProgramCache]: Analyzing trace with hash 242175337, now seen corresponding path program 1 times [2022-01-10 14:18:20,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:18:20,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972148090] [2022-01-10 14:18:20,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:18:20,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:18:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:18:20,425 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 14:18:20,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:18:20,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972148090] [2022-01-10 14:18:20,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972148090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:18:20,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:18:20,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:18:20,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24303160] [2022-01-10 14:18:20,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:18:20,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:18:20,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:18:20,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:18:20,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:18:20,429 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 14:18:22,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 14:18:22,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:18:22,584 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-01-10 14:18:22,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:18:22,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2022-01-10 14:18:22,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:18:22,585 INFO L225 Difference]: With dead ends: 31 [2022-01-10 14:18:22,585 INFO L226 Difference]: Without dead ends: 20 [2022-01-10 14:18:22,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:18:22,586 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:18:22,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 39 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 14:18:22,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-10 14:18:22,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2022-01-10 14:18:22,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 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 14:18:22,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-01-10 14:18:22,590 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2022-01-10 14:18:22,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:18:22,590 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-01-10 14:18:22,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 14:18:22,590 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-01-10 14:18:22,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 14:18:22,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:18:22,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:18:22,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 14:18:22,591 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:18:22,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:18:22,592 INFO L85 PathProgramCache]: Analyzing trace with hash 242205128, now seen corresponding path program 1 times [2022-01-10 14:18:22,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:18:22,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130168710] [2022-01-10 14:18:22,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:18:22,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:18:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:18:22,759 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 14:18:22,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:18:22,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130168710] [2022-01-10 14:18:22,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130168710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:18:22,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:18:22,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:18:22,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657115867] [2022-01-10 14:18:22,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:18:22,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:18:22,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:18:22,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:18:22,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:18:22,761 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 14:18:24,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 14:18:24,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:18:24,880 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-01-10 14:18:24,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:18:24,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2022-01-10 14:18:24,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:18:24,881 INFO L225 Difference]: With dead ends: 29 [2022-01-10 14:18:24,882 INFO L226 Difference]: Without dead ends: 23 [2022-01-10 14:18:24,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 14:18:24,883 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:18:24,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 32 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 14:18:24,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-10 14:18:24,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2022-01-10 14:18:24,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 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 14:18:24,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-01-10 14:18:24,886 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 8 [2022-01-10 14:18:24,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:18:24,886 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-01-10 14:18:24,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 14:18:24,886 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-01-10 14:18:24,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 14:18:24,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:18:24,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:18:24,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 14:18:24,887 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:18:24,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:18:24,888 INFO L85 PathProgramCache]: Analyzing trace with hash 575148569, now seen corresponding path program 1 times [2022-01-10 14:18:24,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:18:24,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040092654] [2022-01-10 14:18:24,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:18:24,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:18:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 14:18:24,942 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 14:18:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 14:18:24,996 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-10 14:18:24,996 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 14:18:24,997 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 14:18:24,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 14:18:25,006 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-10 14:18:25,008 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 14:18:25,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:18:25 BasicIcfg [2022-01-10 14:18:25,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 14:18:25,039 INFO L158 Benchmark]: Toolchain (without parser) took 5840.94ms. Allocated memory was 192.9MB in the beginning and 233.8MB in the end (delta: 40.9MB). Free memory was 138.5MB in the beginning and 164.3MB in the end (delta: -25.8MB). Peak memory consumption was 16.4MB. Max. memory is 8.0GB. [2022-01-10 14:18:25,040 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 154.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 14:18:25,041 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.80ms. Allocated memory is still 192.9MB. Free memory was 138.3MB in the beginning and 165.4MB in the end (delta: -27.1MB). Peak memory consumption was 5.1MB. Max. memory is 8.0GB. [2022-01-10 14:18:25,042 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.98ms. Allocated memory is still 192.9MB. Free memory was 165.4MB in the beginning and 163.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 14:18:25,043 INFO L158 Benchmark]: Boogie Preprocessor took 36.61ms. Allocated memory is still 192.9MB. Free memory was 163.7MB in the beginning and 162.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 14:18:25,044 INFO L158 Benchmark]: RCFGBuilder took 224.25ms. Allocated memory is still 192.9MB. Free memory was 162.6MB in the beginning and 153.2MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-10 14:18:25,044 INFO L158 Benchmark]: IcfgTransformer took 55.24ms. Allocated memory is still 192.9MB. Free memory was 152.8MB in the beginning and 149.0MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-01-10 14:18:25,044 INFO L158 Benchmark]: TraceAbstraction took 5123.88ms. Allocated memory was 192.9MB in the beginning and 233.8MB in the end (delta: 40.9MB). Free memory was 148.6MB in the beginning and 164.3MB in the end (delta: -15.6MB). Peak memory consumption was 26.6MB. Max. memory is 8.0GB. [2022-01-10 14:18:25,045 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 192.9MB. Free memory is still 154.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 324.80ms. Allocated memory is still 192.9MB. Free memory was 138.3MB in the beginning and 165.4MB in the end (delta: -27.1MB). Peak memory consumption was 5.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.98ms. Allocated memory is still 192.9MB. Free memory was 165.4MB in the beginning and 163.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.61ms. Allocated memory is still 192.9MB. Free memory was 163.7MB in the beginning and 162.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 224.25ms. Allocated memory is still 192.9MB. Free memory was 162.6MB in the beginning and 153.2MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 55.24ms. Allocated memory is still 192.9MB. Free memory was 152.8MB in the beginning and 149.0MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * TraceAbstraction took 5123.88ms. Allocated memory was 192.9MB in the beginning and 233.8MB in the end (delta: 40.9MB). Free memory was 148.6MB in the beginning and 164.3MB in the end (delta: -15.6MB). Peak memory consumption was 26.6MB. 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 - UnprovableResult [Line: 25]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of BvToInt. Possible FailurePath: [L42] unsigned int v = __VERIFIER_nondet_uint(); [L43] unsigned int v1; [L44] unsigned int v2; [L45] char parity1; [L46] char parity2; [L47] v1 = v [L48] parity1 = (char)0 VAL [parity1=0, v=2863311531, v1=2863311531] [L49] COND TRUE v1 != 0 VAL [parity1=0, v=2863311531, v1=2863311531] [L50] COND TRUE parity1 == (char)0 [L51] parity1 = (char)1 VAL [parity1=1, v=2863311531, v1=2863311531] [L55] v1 = v1 & (v1 - 1U) VAL [parity1=1, v=2863311531, v1=0] [L49] COND FALSE !(v1 != 0) VAL [parity1=1, v=2863311531, v1=0] [L57] v2 = v [L58] parity2 = (char)0 [L59] v2 = v2 ^ (v2 >> 1u) [L60] v2 = v2 ^ (v2 >> 2u) [L61] v2 = (v2 & 286331153U) * 286331153U VAL [parity1=1, parity2=0, v=2863311531, v1=0, v2=0] [L62] COND TRUE ((v2 >> 28u) & 1u) == 0 [L63] parity2 = (char)0 VAL [parity1=1, parity2=0, v=2863311531, v1=0, v2=0] [L67] CALL __VERIFIER_assert(parity1 == parity2) [L24] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L25] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 88 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 38 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, InterpolantAutomatonStates: 13, 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, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 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 could not prove your program: unable to determine feasibility of some traces [2022-01-10 14:18:25,081 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...