/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 IntervalDomain -i ../sv-benchmarks/c/eca-rers2012/Problem18_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:27:35,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:27:35,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:27:35,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:27:35,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:27:35,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:27:35,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:27:35,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:27:35,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:27:35,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:27:35,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:27:35,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:27:35,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:27:35,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:27:35,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:27:35,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:27:35,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:27:35,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:27:35,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:27:35,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:27:35,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:27:35,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:27:35,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:27:35,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:27:35,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 22:27:35,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:27:35,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:27:35,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:27:35,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:27:35,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:27:35,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:27:35,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:27:35,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:27:35,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:27:35,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:27:35,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:27:35,972 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 [2023-03-31 22:27:35,998 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:27:35,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:27:35,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:27:35,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:27:35,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:27:36,000 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:27:36,000 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:27:36,000 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:27:36,000 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:27:36,000 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:27:36,001 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:27:36,001 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:27:36,001 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:27:36,001 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:27:36,001 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:27:36,001 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:27:36,002 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:27:36,002 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:27:36,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:27:36,002 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:27:36,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:27:36,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:27:36,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:27:36,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:27:36,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:27:36,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:27:36,003 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:27:36,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:27:36,003 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:27:36,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:27:36,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:27:36,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:27:36,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:27:36,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:27:36,004 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:27:36,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:27:36,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:27:36,004 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:27:36,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:27:36,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:27:36,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:27:36,005 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:27:36,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:27:36,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:27:36,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:27:36,221 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:27:36,222 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:27:36,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label40.c [2023-03-31 22:27:37,281 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:27:37,656 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:27:37,657 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label40.c [2023-03-31 22:27:37,678 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01b8e79a1/e07152d987f440a39fd84a9688f4a1a2/FLAG6e48738d6 [2023-03-31 22:27:37,692 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01b8e79a1/e07152d987f440a39fd84a9688f4a1a2 [2023-03-31 22:27:37,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:27:37,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:27:37,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:27:37,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:27:37,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:27:37,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:27:37" (1/1) ... [2023-03-31 22:27:37,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f33d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:27:37, skipping insertion in model container [2023-03-31 22:27:37,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:27:37" (1/1) ... [2023-03-31 22:27:37,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:27:37,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:27:38,005 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/eca-rers2012/Problem18_label40.c[4742,4755] [2023-03-31 22:27:38,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:27:38,540 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:27:38,564 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/eca-rers2012/Problem18_label40.c[4742,4755] [2023-03-31 22:27:38,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:27:38,813 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:27:38,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:27:38 WrapperNode [2023-03-31 22:27:38,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:27:38,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:27:38,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:27:38,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:27:38,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:27:38" (1/1) ... [2023-03-31 22:27:38,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:27:38" (1/1) ... [2023-03-31 22:27:38,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:27:38" (1/1) ... [2023-03-31 22:27:38,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:27:38" (1/1) ... [2023-03-31 22:27:38,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:27:38" (1/1) ... [2023-03-31 22:27:38,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:27:38" (1/1) ... [2023-03-31 22:27:38,984 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:27:38" (1/1) ... [2023-03-31 22:27:38,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:27:38" (1/1) ... [2023-03-31 22:27:39,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:27:39,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:27:39,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:27:39,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:27:39,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:27:38" (1/1) ... [2023-03-31 22:27:39,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:27:39,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:27:39,046 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) [2023-03-31 22:27:39,057 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 [2023-03-31 22:27:39,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:27:39,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:27:39,086 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:27:39,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-31 22:27:39,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-31 22:27:39,091 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-03-31 22:27:39,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:27:39,091 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-31 22:27:39,091 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-31 22:27:39,091 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-03-31 22:27:39,091 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:27:39,091 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:27:39,091 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:27:39,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:27:39,092 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 22:27:39,092 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 22:27:39,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:27:39,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:27:39,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:27:39,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:27:39,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:27:39,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:27:39,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:27:39,207 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:27:39,209 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:27:41,824 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:27:48,244 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:27:48,244 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 22:27:48,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:27:48 BoogieIcfgContainer [2023-03-31 22:27:48,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:27:48,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:27:48,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:27:48,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:27:48,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:27:37" (1/3) ... [2023-03-31 22:27:48,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4f5edf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:27:48, skipping insertion in model container [2023-03-31 22:27:48,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:27:38" (2/3) ... [2023-03-31 22:27:48,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4f5edf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:27:48, skipping insertion in model container [2023-03-31 22:27:48,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:27:48" (3/3) ... [2023-03-31 22:27:48,254 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label40.c [2023-03-31 22:27:48,270 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:27:48,270 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:27:48,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:27:48,340 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;@556c6337, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:27:48,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:27:48,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 469 states, 457 states have (on average 1.9715536105032823) internal successors, (901), 458 states have internal predecessors, (901), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-31 22:27:48,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 22:27:48,353 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:27:48,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:27:48,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:27:48,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:27:48,361 INFO L85 PathProgramCache]: Analyzing trace with hash 510746340, now seen corresponding path program 1 times [2023-03-31 22:27:48,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:27:48,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103540421] [2023-03-31 22:27:48,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:27:48,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:27:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:27:48,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:27:48,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:27:48,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103540421] [2023-03-31 22:27:48,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103540421] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:27:48,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:27:48,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 22:27:48,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207820826] [2023-03-31 22:27:48,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:27:48,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:27:48,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:27:48,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:27:48,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:27:48,756 INFO L87 Difference]: Start difference. First operand has 469 states, 457 states have (on average 1.9715536105032823) internal successors, (901), 458 states have internal predecessors, (901), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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) [2023-03-31 22:27:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:27:51,129 INFO L93 Difference]: Finished difference Result 1393 states and 2727 transitions. [2023-03-31 22:27:51,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:27:51,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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 [2023-03-31 22:27:51,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:27:51,146 INFO L225 Difference]: With dead ends: 1393 [2023-03-31 22:27:51,147 INFO L226 Difference]: Without dead ends: 921 [2023-03-31 22:27:51,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:27:51,156 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 529 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 737 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 737 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-03-31 22:27:51,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 121 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [737 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-03-31 22:27:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2023-03-31 22:27:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 894. [2023-03-31 22:27:51,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 880 states have (on average 1.8852272727272728) internal successors, (1659), 880 states have internal predecessors, (1659), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-03-31 22:27:51,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1676 transitions. [2023-03-31 22:27:51,241 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1676 transitions. Word has length 11 [2023-03-31 22:27:51,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:27:51,241 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 1676 transitions. [2023-03-31 22:27:51,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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) [2023-03-31 22:27:51,242 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1676 transitions. [2023-03-31 22:27:51,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-03-31 22:27:51,243 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:27:51,243 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:27:51,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:27:51,244 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:27:51,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:27:51,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1576848415, now seen corresponding path program 1 times [2023-03-31 22:27:51,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:27:51,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954117673] [2023-03-31 22:27:51,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:27:51,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:27:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:27:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 22:27:51,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:27:51,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954117673] [2023-03-31 22:27:51,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954117673] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:27:51,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:27:51,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 22:27:51,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104040861] [2023-03-31 22:27:51,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:27:51,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 22:27:51,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:27:51,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 22:27:51,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 22:27:51,434 INFO L87 Difference]: Start difference. First operand 894 states and 1676 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 22:27:54,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:27:54,265 INFO L93 Difference]: Finished difference Result 2706 states and 5114 transitions. [2023-03-31 22:27:54,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 22:27:54,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2023-03-31 22:27:54,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:27:54,278 INFO L225 Difference]: With dead ends: 2706 [2023-03-31 22:27:54,279 INFO L226 Difference]: Without dead ends: 1817 [2023-03-31 22:27:54,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-03-31 22:27:54,289 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1623 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 788 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 788 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-03-31 22:27:54,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 74 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [788 Valid, 2510 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-03-31 22:27:54,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2023-03-31 22:27:54,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1767. [2023-03-31 22:27:54,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1737 states have (on average 1.7317213586643638) internal successors, (3008), 1741 states have internal predecessors, (3008), 11 states have call successors, (11), 11 states have call predecessors, (11), 18 states have return successors, (50), 14 states have call predecessors, (50), 10 states have call successors, (50) [2023-03-31 22:27:54,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 3069 transitions. [2023-03-31 22:27:54,376 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 3069 transitions. Word has length 40 [2023-03-31 22:27:54,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:27:54,377 INFO L495 AbstractCegarLoop]: Abstraction has 1767 states and 3069 transitions. [2023-03-31 22:27:54,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 22:27:54,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 3069 transitions. [2023-03-31 22:27:54,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-03-31 22:27:54,379 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:27:54,379 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:27:54,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 22:27:54,380 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:27:54,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:27:54,380 INFO L85 PathProgramCache]: Analyzing trace with hash 420484363, now seen corresponding path program 1 times [2023-03-31 22:27:54,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:27:54,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132400813] [2023-03-31 22:27:54,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:27:54,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:27:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:27:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-31 22:27:54,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:27:54,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132400813] [2023-03-31 22:27:54,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132400813] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:27:54,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622126362] [2023-03-31 22:27:54,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:27:54,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:27:54,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:27:54,587 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) [2023-03-31 22:27:54,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 22:27:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:27:54,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 22:27:54,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:27:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 22:27:54,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 22:27:54,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622126362] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:27:54,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 22:27:54,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-03-31 22:27:54,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138288345] [2023-03-31 22:27:54,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:27:54,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 22:27:54,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:27:54,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 22:27:54,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-31 22:27:54,905 INFO L87 Difference]: Start difference. First operand 1767 states and 3069 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 22:27:57,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:27:57,281 INFO L93 Difference]: Finished difference Result 4420 states and 7600 transitions. [2023-03-31 22:27:57,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 22:27:57,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2023-03-31 22:27:57,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:27:57,303 INFO L225 Difference]: With dead ends: 4420 [2023-03-31 22:27:57,303 INFO L226 Difference]: Without dead ends: 2658 [2023-03-31 22:27:57,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-03-31 22:27:57,310 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1605 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 1077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 3212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1077 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-03-31 22:27:57,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 65 Invalid, 3212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1077 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-03-31 22:27:57,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2023-03-31 22:27:57,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 2257. [2023-03-31 22:27:57,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2210 states have (on average 1.6131221719457014) internal successors, (3565), 2219 states have internal predecessors, (3565), 14 states have call successors, (14), 14 states have call predecessors, (14), 32 states have return successors, (112), 23 states have call predecessors, (112), 13 states have call successors, (112) [2023-03-31 22:27:57,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3691 transitions. [2023-03-31 22:27:57,396 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3691 transitions. Word has length 54 [2023-03-31 22:27:57,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:27:57,396 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3691 transitions. [2023-03-31 22:27:57,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 22:27:57,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3691 transitions. [2023-03-31 22:27:57,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-03-31 22:27:57,404 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:27:57,404 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:27:57,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-31 22:27:57,611 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 [2023-03-31 22:27:57,611 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:27:57,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:27:57,612 INFO L85 PathProgramCache]: Analyzing trace with hash 87238417, now seen corresponding path program 1 times [2023-03-31 22:27:57,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:27:57,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775606150] [2023-03-31 22:27:57,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:27:57,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:27:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:27:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-03-31 22:27:57,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:27:57,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775606150] [2023-03-31 22:27:57,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775606150] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:27:57,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972221825] [2023-03-31 22:27:57,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:27:57,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:27:57,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:27:57,825 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) [2023-03-31 22:27:57,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 22:27:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:27:57,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 22:27:57,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:27:58,003 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-03-31 22:27:58,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 22:27:58,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972221825] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:27:58,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 22:27:58,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-03-31 22:27:58,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192985086] [2023-03-31 22:27:58,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:27:58,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 22:27:58,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:27:58,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 22:27:58,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 22:27:58,006 INFO L87 Difference]: Start difference. First operand 2257 states and 3691 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 22:28:00,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:28:00,604 INFO L93 Difference]: Finished difference Result 6928 states and 11604 transitions. [2023-03-31 22:28:00,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 22:28:00,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 66 [2023-03-31 22:28:00,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:28:00,629 INFO L225 Difference]: With dead ends: 6928 [2023-03-31 22:28:00,629 INFO L226 Difference]: Without dead ends: 4676 [2023-03-31 22:28:00,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-03-31 22:28:00,638 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1541 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2604 mSolverCounterSat, 955 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 3559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 955 IncrementalHoareTripleChecker+Valid, 2604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-03-31 22:28:00,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 77 Invalid, 3559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [955 Valid, 2604 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-03-31 22:28:00,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4676 states. [2023-03-31 22:28:00,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4676 to 4551. [2023-03-31 22:28:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4551 states, 4427 states have (on average 1.407725321888412) internal successors, (6232), 4469 states have internal predecessors, (6232), 25 states have call successors, (25), 25 states have call predecessors, (25), 98 states have return successors, (444), 56 states have call predecessors, (444), 24 states have call successors, (444) [2023-03-31 22:28:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4551 states to 4551 states and 6701 transitions. [2023-03-31 22:28:00,779 INFO L78 Accepts]: Start accepts. Automaton has 4551 states and 6701 transitions. Word has length 66 [2023-03-31 22:28:00,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:28:00,780 INFO L495 AbstractCegarLoop]: Abstraction has 4551 states and 6701 transitions. [2023-03-31 22:28:00,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 22:28:00,780 INFO L276 IsEmpty]: Start isEmpty. Operand 4551 states and 6701 transitions. [2023-03-31 22:28:00,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-03-31 22:28:00,783 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:28:00,783 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:28:00,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 22:28:00,990 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 [2023-03-31 22:28:00,991 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:28:00,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:28:00,991 INFO L85 PathProgramCache]: Analyzing trace with hash 505500946, now seen corresponding path program 1 times [2023-03-31 22:28:00,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:28:00,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979624693] [2023-03-31 22:28:00,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:28:00,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:28:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:28:01,262 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 31 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-03-31 22:28:01,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:28:01,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979624693] [2023-03-31 22:28:01,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979624693] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:28:01,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894279507] [2023-03-31 22:28:01,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:28:01,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:28:01,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:28:01,264 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:28:01,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 22:28:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:28:01,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-31 22:28:01,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:28:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 22:28:01,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:28:01,545 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 31 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-03-31 22:28:01,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894279507] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:28:01,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1469427998] [2023-03-31 22:28:01,565 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2023-03-31 22:28:01,566 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:28:01,568 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:28:01,573 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:28:01,573 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:28:01,722 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 44 for LOIs [2023-03-31 22:28:01,895 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 38 [2023-03-31 22:28:02,125 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 23 [2023-03-31 22:28:03,018 INFO L197 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 45 for LOIs [2023-03-31 22:28:03,152 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 38 [2023-03-31 22:28:04,120 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 23 [2023-03-31 22:28:04,550 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 32970 conjuctions. This might take some time... [2023-03-31 22:28:07,170 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 854 conjuctions.