/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/loop-zilu/benchmark10_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 11:12:02,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 11:12:02,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 11:12:03,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 11:12:03,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 11:12:03,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 11:12:03,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 11:12:03,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 11:12:03,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 11:12:03,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 11:12:03,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 11:12:03,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 11:12:03,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 11:12:03,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 11:12:03,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 11:12:03,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 11:12:03,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 11:12:03,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 11:12:03,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 11:12:03,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 11:12:03,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 11:12:03,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 11:12:03,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 11:12:03,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 11:12:03,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 11:12:03,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 11:12:03,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 11:12:03,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 11:12:03,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 11:12:03,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 11:12:03,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 11:12:03,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 11:12:03,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 11:12:03,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 11:12:03,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 11:12:03,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 11:12:03,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 11:12:03,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 11:12:03,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 11:12:03,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 11:12:03,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 11:12:03,065 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 11:12:03,095 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 11:12:03,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 11:12:03,096 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 11:12:03,096 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 11:12:03,097 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 11:12:03,097 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 11:12:03,097 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 11:12:03,098 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 11:12:03,098 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 11:12:03,098 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 11:12:03,099 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 11:12:03,099 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 11:12:03,099 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 11:12:03,099 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 11:12:03,099 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 11:12:03,099 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 11:12:03,100 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 11:12:03,100 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 11:12:03,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 11:12:03,101 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 11:12:03,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 11:12:03,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 11:12:03,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 11:12:03,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 11:12:03,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 11:12:03,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 11:12:03,102 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 11:12:03,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 11:12:03,102 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 11:12:03,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 11:12:03,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 11:12:03,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 11:12:03,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 11:12:03,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 11:12:03,103 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 11:12:03,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 11:12:03,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 11:12:03,104 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 11:12:03,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 11:12:03,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 11:12:03,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 11:12:03,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 11:12:03,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 11:12:03,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 11:12:03,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 11:12:03,392 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 11:12:03,393 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 11:12:03,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark10_conjunctive.i [2023-04-01 11:12:04,481 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 11:12:04,645 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 11:12:04,646 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark10_conjunctive.i [2023-04-01 11:12:04,651 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a08c33fa7/1daa5955cb5247a1a67c7fe7c0e0b721/FLAGf1fd39ca2 [2023-04-01 11:12:04,663 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a08c33fa7/1daa5955cb5247a1a67c7fe7c0e0b721 [2023-04-01 11:12:04,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 11:12:04,666 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 11:12:04,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 11:12:04,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 11:12:04,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 11:12:04,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:12:04" (1/1) ... [2023-04-01 11:12:04,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be32551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:04, skipping insertion in model container [2023-04-01 11:12:04,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:12:04" (1/1) ... [2023-04-01 11:12:04,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 11:12:04,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 11:12:04,810 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark10_conjunctive.i[873,886] [2023-04-01 11:12:04,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 11:12:04,831 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 11:12:04,842 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark10_conjunctive.i[873,886] [2023-04-01 11:12:04,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 11:12:04,859 INFO L208 MainTranslator]: Completed translation [2023-04-01 11:12:04,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:04 WrapperNode [2023-04-01 11:12:04,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 11:12:04,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 11:12:04,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 11:12:04,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 11:12:04,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:04" (1/1) ... [2023-04-01 11:12:04,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:04" (1/1) ... [2023-04-01 11:12:04,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:04" (1/1) ... [2023-04-01 11:12:04,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:04" (1/1) ... [2023-04-01 11:12:04,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:04" (1/1) ... [2023-04-01 11:12:04,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:04" (1/1) ... [2023-04-01 11:12:04,889 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:04" (1/1) ... [2023-04-01 11:12:04,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:04" (1/1) ... [2023-04-01 11:12:04,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 11:12:04,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 11:12:04,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 11:12:04,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 11:12:04,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:04" (1/1) ... [2023-04-01 11:12:04,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 11:12:04,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:12:04,929 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) [2023-04-01 11:12:04,946 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 [2023-04-01 11:12:04,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 11:12:04,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 11:12:04,973 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 11:12:04,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 11:12:04,976 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 11:12:04,977 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 11:12:04,977 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 11:12:04,977 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 11:12:04,977 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 11:12:04,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 11:12:04,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 11:12:04,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 11:12:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 11:12:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 11:12:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 11:12:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 11:12:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 11:12:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 11:12:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 11:12:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 11:12:05,045 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 11:12:05,047 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 11:12:05,151 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 11:12:05,170 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 11:12:05,170 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 11:12:05,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:12:05 BoogieIcfgContainer [2023-04-01 11:12:05,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 11:12:05,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 11:12:05,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 11:12:05,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 11:12:05,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:12:04" (1/3) ... [2023-04-01 11:12:05,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d620061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:12:05, skipping insertion in model container [2023-04-01 11:12:05,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:12:04" (2/3) ... [2023-04-01 11:12:05,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d620061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:12:05, skipping insertion in model container [2023-04-01 11:12:05,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:12:05" (3/3) ... [2023-04-01 11:12:05,180 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark10_conjunctive.i [2023-04-01 11:12:05,195 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 11:12:05,196 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 11:12:05,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 11:12:05,242 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@665a94f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 11:12:05,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 11:12:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 11:12:05,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-04-01 11:12:05,252 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:12:05,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:12:05,253 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:12:05,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:12:05,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1241888387, now seen corresponding path program 1 times [2023-04-01 11:12:05,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:12:05,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267828011] [2023-04-01 11:12:05,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:12:05,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:12:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:12:05,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:12:05,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:12:05,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267828011] [2023-04-01 11:12:05,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267828011] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:12:05,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 11:12:05,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 11:12:05,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710857227] [2023-04-01 11:12:05,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:12:05,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 11:12:05,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:12:05,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 11:12:05,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 11:12:05,574 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:12:05,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:12:05,631 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2023-04-01 11:12:05,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 11:12:05,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-04-01 11:12:05,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:12:05,640 INFO L225 Difference]: With dead ends: 37 [2023-04-01 11:12:05,641 INFO L226 Difference]: Without dead ends: 15 [2023-04-01 11:12:05,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 11:12:05,679 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 11:12:05,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 36 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 11:12:05,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-04-01 11:12:05,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-04-01 11:12:05,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:12:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-04-01 11:12:05,713 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2023-04-01 11:12:05,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:12:05,714 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-04-01 11:12:05,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:12:05,715 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-04-01 11:12:05,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-04-01 11:12:05,716 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:12:05,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:12:05,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 11:12:05,716 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:12:05,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:12:05,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1151426268, now seen corresponding path program 1 times [2023-04-01 11:12:05,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:12:05,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228576278] [2023-04-01 11:12:05,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:12:05,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:12:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:12:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:12:05,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:12:05,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228576278] [2023-04-01 11:12:05,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228576278] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:12:05,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 11:12:05,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 11:12:05,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278523647] [2023-04-01 11:12:05,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:12:05,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 11:12:05,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:12:05,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 11:12:05,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-01 11:12:05,835 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:12:05,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:12:05,867 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2023-04-01 11:12:05,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 11:12:05,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-04-01 11:12:05,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:12:05,871 INFO L225 Difference]: With dead ends: 19 [2023-04-01 11:12:05,871 INFO L226 Difference]: Without dead ends: 14 [2023-04-01 11:12:05,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-01 11:12:05,873 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 11:12:05,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 23 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 11:12:05,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-04-01 11:12:05,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-04-01 11:12:05,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:12:05,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-04-01 11:12:05,877 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2023-04-01 11:12:05,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:12:05,877 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-04-01 11:12:05,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:12:05,877 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-04-01 11:12:05,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-04-01 11:12:05,879 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:12:05,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:12:05,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 11:12:05,880 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:12:05,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:12:05,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1270457954, now seen corresponding path program 1 times [2023-04-01 11:12:05,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:12:05,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267304789] [2023-04-01 11:12:05,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:12:05,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:12:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:12:05,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:12:05,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:12:05,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267304789] [2023-04-01 11:12:05,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267304789] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 11:12:05,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990561160] [2023-04-01 11:12:05,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:12:05,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:12:05,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:12:05,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 11:12:05,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 11:12:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:12:06,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 11:12:06,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:12:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:12:06,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 11:12:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:12:06,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990561160] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 11:12:06,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1052588499] [2023-04-01 11:12:06,144 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-04-01 11:12:06,144 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 11:12:06,148 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 11:12:06,158 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 11:12:06,159 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 11:12:06,296 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 37 for LOIs [2023-04-01 11:12:06,466 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 41 for LOIs [2023-04-01 11:12:06,498 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 11:12:06,507 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 11:12:07,054 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '233#(and (= 26 (select |#length| 2)) (= 2 (select |#length| 1)) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (not (= |#StackHeapBarrier| 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select (select |#memory_int| 1) 0) 48) (= (select (select |#memory_int| 1) 1) 0) (= |#NULL.base| 0))' at error location [2023-04-01 11:12:07,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 11:12:07,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 11:12:07,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-04-01 11:12:07,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543855794] [2023-04-01 11:12:07,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 11:12:07,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 11:12:07,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:12:07,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 11:12:07,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-04-01 11:12:07,057 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:12:07,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:12:07,087 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2023-04-01 11:12:07,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 11:12:07,088 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-04-01 11:12:07,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:12:07,088 INFO L225 Difference]: With dead ends: 25 [2023-04-01 11:12:07,088 INFO L226 Difference]: Without dead ends: 20 [2023-04-01 11:12:07,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-04-01 11:12:07,090 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 11:12:07,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 11:12:07,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-04-01 11:12:07,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-04-01 11:12:07,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:12:07,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2023-04-01 11:12:07,095 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2023-04-01 11:12:07,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:12:07,095 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2023-04-01 11:12:07,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:12:07,095 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2023-04-01 11:12:07,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-01 11:12:07,096 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:12:07,096 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:12:07,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 11:12:07,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:12:07,319 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:12:07,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:12:07,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1142889873, now seen corresponding path program 2 times [2023-04-01 11:12:07,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:12:07,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975167150] [2023-04-01 11:12:07,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:12:07,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:12:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:12:07,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:12:07,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:12:07,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975167150] [2023-04-01 11:12:07,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975167150] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 11:12:07,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362015500] [2023-04-01 11:12:07,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 11:12:07,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:12:07,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:12:07,595 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 11:12:07,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 11:12:07,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-04-01 11:12:07,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 11:12:07,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 11:12:07,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:12:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:12:07,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 11:12:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:12:07,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362015500] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 11:12:07,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [215683509] [2023-04-01 11:12:07,818 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-04-01 11:12:07,818 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 11:12:07,819 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 11:12:07,819 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 11:12:07,819 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 11:12:07,879 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 37 for LOIs [2023-04-01 11:12:08,046 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 41 for LOIs [2023-04-01 11:12:08,065 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 11:12:08,070 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 11:12:08,571 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '443#(and (= 26 (select |#length| 2)) (= 2 (select |#length| 1)) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (not (= |#StackHeapBarrier| 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select (select |#memory_int| 1) 0) 48) (= (select (select |#memory_int| 1) 1) 0) (= |#NULL.base| 0))' at error location [2023-04-01 11:12:08,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 11:12:08,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 11:12:08,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 21 [2023-04-01 11:12:08,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559782902] [2023-04-01 11:12:08,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 11:12:08,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-01 11:12:08,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:12:08,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-01 11:12:08,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2023-04-01 11:12:08,575 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 20 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:12:09,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:12:09,012 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2023-04-01 11:12:09,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 11:12:09,012 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 20 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-04-01 11:12:09,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:12:09,013 INFO L225 Difference]: With dead ends: 35 [2023-04-01 11:12:09,013 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 11:12:09,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=453, Invalid=2199, Unknown=0, NotChecked=0, Total=2652 [2023-04-01 11:12:09,015 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 11:12:09,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 40 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 11:12:09,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 11:12:09,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 11:12:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-04-01 11:12:09,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 11:12:09,017 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2023-04-01 11:12:09,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:12:09,017 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 11:12:09,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 20 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:12:09,017 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 11:12:09,018 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 11:12:09,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 11:12:09,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 11:12:09,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-01 11:12:09,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 11:12:09,304 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2023-04-01 11:12:09,304 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 11) no Hoare annotation was computed. [2023-04-01 11:12:09,304 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2023-04-01 11:12:09,304 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-04-01 11:12:09,304 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 19 30) no Hoare annotation was computed. [2023-04-01 11:12:09,304 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2023-04-01 11:12:09,305 INFO L895 garLoopResultBuilder]: At program point L23-2(lines 23 27) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~c~0)) (.cse0 (<= 1 main_~i~0))) (or (and (<= 1 main_~c~0) (<= main_~i~0 2) .cse0) (and (<= 4 main_~c~0) .cse0) (and (<= 0 main_~c~0) (= main_~i~0 0)) (and .cse0 (<= main_~i~0 3) (<= 4 .cse1)) (and (<= main_~i~0 1) (<= 1 .cse1) .cse0))) [2023-04-01 11:12:09,305 INFO L895 garLoopResultBuilder]: At program point L23-3(lines 23 27) the Hoare annotation is: (and (<= 4 main_~c~0) (<= 1 main_~i~0)) [2023-04-01 11:12:09,305 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 19 30) no Hoare annotation was computed. [2023-04-01 11:12:09,305 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 19 30) the Hoare annotation is: true [2023-04-01 11:12:09,305 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 11:12:09,306 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-01 11:12:09,306 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-01 11:12:09,306 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-04-01 11:12:09,306 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-01 11:12:09,306 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 11:12:09,306 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-04-01 11:12:09,306 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2023-04-01 11:12:09,306 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 18) no Hoare annotation was computed. [2023-04-01 11:12:09,306 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 18) no Hoare annotation was computed. [2023-04-01 11:12:09,306 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 18) the Hoare annotation is: true [2023-04-01 11:12:09,307 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2023-04-01 11:12:09,309 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-04-01 11:12:09,311 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 11:12:09,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 11:12:09 BoogieIcfgContainer [2023-04-01 11:12:09,323 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 11:12:09,323 INFO L158 Benchmark]: Toolchain (without parser) took 4657.14ms. Allocated memory was 181.4MB in the beginning and 244.3MB in the end (delta: 62.9MB). Free memory was 139.7MB in the beginning and 100.0MB in the end (delta: 39.7MB). Peak memory consumption was 103.0MB. Max. memory is 8.0GB. [2023-04-01 11:12:09,323 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 136.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 11:12:09,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.64ms. Allocated memory is still 181.4MB. Free memory was 139.7MB in the beginning and 129.6MB in the end (delta: 10.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-04-01 11:12:09,324 INFO L158 Benchmark]: Boogie Preprocessor took 36.63ms. Allocated memory is still 181.4MB. Free memory was 129.6MB in the beginning and 128.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-01 11:12:09,324 INFO L158 Benchmark]: RCFGBuilder took 275.30ms. Allocated memory is still 181.4MB. Free memory was 128.2MB in the beginning and 117.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 11:12:09,324 INFO L158 Benchmark]: TraceAbstraction took 4147.68ms. Allocated memory was 181.4MB in the beginning and 244.3MB in the end (delta: 62.9MB). Free memory was 116.7MB in the beginning and 100.0MB in the end (delta: 16.6MB). Peak memory consumption was 79.9MB. Max. memory is 8.0GB. [2023-04-01 11:12:09,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory is still 136.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 192.64ms. Allocated memory is still 181.4MB. Free memory was 139.7MB in the beginning and 129.6MB in the end (delta: 10.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.63ms. Allocated memory is still 181.4MB. Free memory was 129.6MB in the beginning and 128.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 275.30ms. Allocated memory is still 181.4MB. Free memory was 128.2MB in the beginning and 117.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 4147.68ms. Allocated memory was 181.4MB in the beginning and 244.3MB in the end (delta: 62.9MB). Free memory was 116.7MB in the beginning and 100.0MB in the end (delta: 16.6MB). Peak memory consumption was 79.9MB. 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 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 122 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 77 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 160 IncrementalHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 45 mSDtfsCounter, 160 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, 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, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 22 NumberOfFragments, 61 HoareAnnotationTreeSize, 11 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 130 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 209 SizeOfPredicates, 0 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 6/51 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((((1 <= c && i <= 2) && 1 <= i) || (4 <= c && 1 <= i)) || (0 <= c && i == 0)) || ((1 <= i && i <= 3) && 4 <= i + c)) || ((i <= 1 && 1 <= i + c) && 1 <= i) RESULT: Ultimate proved your program to be correct! [2023-04-01 11:12:09,344 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...