/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 OctagonDomain -i ../sv-benchmarks/c/eca-rers2012/Problem12_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 04:00:44,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 04:00:44,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 04:00:44,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 04:00:44,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 04:00:44,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 04:00:44,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 04:00:44,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 04:00:44,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 04:00:44,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 04:00:44,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 04:00:44,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 04:00:44,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 04:00:44,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 04:00:44,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 04:00:44,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 04:00:44,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 04:00:44,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 04:00:44,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 04:00:44,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 04:00:44,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 04:00:44,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 04:00:44,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 04:00:45,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 04:00:45,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 04:00:45,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 04:00:45,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 04:00:45,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 04:00:45,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 04:00:45,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 04:00:45,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 04:00:45,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 04:00:45,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 04:00:45,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 04:00:45,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 04:00:45,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 04:00:45,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 04:00:45,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 04:00:45,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 04:00:45,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 04:00:45,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 04:00:45,021 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 04:00:45,054 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 04:00:45,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 04:00:45,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 04:00:45,055 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 04:00:45,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 04:00:45,056 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 04:00:45,057 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 04:00:45,057 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 04:00:45,057 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 04:00:45,057 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 04:00:45,058 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 04:00:45,058 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 04:00:45,058 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 04:00:45,058 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 04:00:45,058 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 04:00:45,058 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 04:00:45,058 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 04:00:45,059 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 04:00:45,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 04:00:45,059 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 04:00:45,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 04:00:45,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 04:00:45,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 04:00:45,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 04:00:45,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 04:00:45,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 04:00:45,061 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 04:00:45,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 04:00:45,061 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 04:00:45,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 04:00:45,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 04:00:45,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 04:00:45,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:00:45,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 04:00:45,062 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 04:00:45,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 04:00:45,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 04:00:45,062 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 04:00:45,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 04:00:45,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 04:00:45,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 04:00:45,063 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 04:00:45,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 04:00:45,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 04:00:45,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 04:00:45,321 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 04:00:45,321 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 04:00:45,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label20.c [2023-04-01 04:00:46,493 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 04:00:46,943 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 04:00:46,943 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label20.c [2023-04-01 04:00:46,975 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d56ccc79/c8693cff5b2549b288b7d1c6fd65f048/FLAGf79c09dce [2023-04-01 04:00:47,002 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d56ccc79/c8693cff5b2549b288b7d1c6fd65f048 [2023-04-01 04:00:47,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 04:00:47,008 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 04:00:47,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 04:00:47,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 04:00:47,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 04:00:47,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:00:47" (1/1) ... [2023-04-01 04:00:47,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@382adc21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:00:47, skipping insertion in model container [2023-04-01 04:00:47,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:00:47" (1/1) ... [2023-04-01 04:00:47,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 04:00:47,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 04:00:47,318 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/Problem12_label20.c[1898,1911] [2023-04-01 04:00:47,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:00:47,962 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 04:00:47,987 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/Problem12_label20.c[1898,1911] [2023-04-01 04:00:48,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:00:48,429 INFO L208 MainTranslator]: Completed translation [2023-04-01 04:00:48,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:00:48 WrapperNode [2023-04-01 04:00:48,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 04:00:48,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 04:00:48,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 04:00:48,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 04:00:48,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:00:48" (1/1) ... [2023-04-01 04:00:48,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:00:48" (1/1) ... [2023-04-01 04:00:48,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:00:48" (1/1) ... [2023-04-01 04:00:48,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:00:48" (1/1) ... [2023-04-01 04:00:48,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:00:48" (1/1) ... [2023-04-01 04:00:48,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:00:48" (1/1) ... [2023-04-01 04:00:48,650 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:00:48" (1/1) ... [2023-04-01 04:00:48,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:00:48" (1/1) ... [2023-04-01 04:00:48,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 04:00:48,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 04:00:48,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 04:00:48,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 04:00:48,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:00:48" (1/1) ... [2023-04-01 04:00:48,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:00:48,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:00:48,739 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 04:00:48,750 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 04:00:48,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 04:00:48,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 04:00:48,781 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 04:00:48,781 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 04:00:48,781 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 04:00:48,781 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 04:00:48,781 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 04:00:48,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 04:00:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 04:00:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 04:00:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 04:00:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 04:00:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 04:00:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 04:00:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 04:00:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 04:00:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 04:00:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 04:00:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 04:00:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 04:00:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 04:00:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 04:00:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 04:00:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 04:00:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 04:00:48,850 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 04:00:48,852 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 04:00:52,811 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 04:00:53,476 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 04:00:53,476 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 04:00:53,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:00:53 BoogieIcfgContainer [2023-04-01 04:00:53,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 04:00:53,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 04:00:53,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 04:00:53,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 04:00:53,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 04:00:47" (1/3) ... [2023-04-01 04:00:53,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e9d016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:00:53, skipping insertion in model container [2023-04-01 04:00:53,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:00:48" (2/3) ... [2023-04-01 04:00:53,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53e9d016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:00:53, skipping insertion in model container [2023-04-01 04:00:53,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:00:53" (3/3) ... [2023-04-01 04:00:53,492 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label20.c [2023-04-01 04:00:53,509 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 04:00:53,509 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 04:00:53,573 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 04:00:53,579 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;@7df9d273, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 04:00:53,580 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 04:00:53,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 694 states, 680 states have (on average 1.9764705882352942) internal successors, (1344), 681 states have internal predecessors, (1344), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 04:00:53,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-04-01 04:00:53,595 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:00:53,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:00:53,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:00:53,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:00:53,601 INFO L85 PathProgramCache]: Analyzing trace with hash 636335105, now seen corresponding path program 1 times [2023-04-01 04:00:53,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:00:53,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600672736] [2023-04-01 04:00:53,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:00:53,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:00:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:00:53,980 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 04:00:53,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:00:53,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600672736] [2023-04-01 04:00:53,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600672736] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:00:53,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:00:53,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 04:00:53,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391187842] [2023-04-01 04:00:53,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:00:53,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 04:00:53,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:00:54,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 04:00:54,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 04:00:54,032 INFO L87 Difference]: Start difference. First operand has 694 states, 680 states have (on average 1.9764705882352942) internal successors, (1344), 681 states have internal predecessors, (1344), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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) [2023-04-01 04:00:57,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:00:57,272 INFO L93 Difference]: Finished difference Result 2068 states and 4065 transitions. [2023-04-01 04:00:57,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 04:00:57,275 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 [2023-04-01 04:00:57,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:00:57,296 INFO L225 Difference]: With dead ends: 2068 [2023-04-01 04:00:57,296 INFO L226 Difference]: Without dead ends: 1371 [2023-04-01 04:00:57,306 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 [2023-04-01 04:00:57,309 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 718 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 2244 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 2244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-01 04:00:57,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 126 Invalid, 2931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 2244 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-01 04:00:57,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2023-04-01 04:00:57,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1367. [2023-04-01 04:00:57,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1349 states have (on average 1.9310600444773907) internal successors, (2605), 1349 states have internal predecessors, (2605), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-04-01 04:00:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 2628 transitions. [2023-04-01 04:00:57,430 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 2628 transitions. Word has length 11 [2023-04-01 04:00:57,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:00:57,431 INFO L495 AbstractCegarLoop]: Abstraction has 1367 states and 2628 transitions. [2023-04-01 04:00:57,432 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) [2023-04-01 04:00:57,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 2628 transitions. [2023-04-01 04:00:57,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-04-01 04:00:57,434 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:00:57,434 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:00:57,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 04:00:57,435 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:00:57,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:00:57,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1280401076, now seen corresponding path program 1 times [2023-04-01 04:00:57,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:00:57,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190567360] [2023-04-01 04:00:57,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:00:57,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:00:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:00:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 04:00:57,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:00:57,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190567360] [2023-04-01 04:00:57,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190567360] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:00:57,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:00:57,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 04:00:57,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194818790] [2023-04-01 04:00:57,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:00:57,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 04:00:57,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:00:57,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 04:00:57,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 04:00:57,658 INFO L87 Difference]: Start difference. First operand 1367 states and 2628 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-04-01 04:01:01,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:01:01,956 INFO L93 Difference]: Finished difference Result 4145 states and 7983 transitions. [2023-04-01 04:01:01,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 04:01:01,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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 21 [2023-04-01 04:01:01,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:01:01,974 INFO L225 Difference]: With dead ends: 4145 [2023-04-01 04:01:01,974 INFO L226 Difference]: Without dead ends: 2783 [2023-04-01 04:01:01,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-01 04:01:01,981 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 2704 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4011 mSolverCounterSat, 670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2704 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 4681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 670 IncrementalHoareTripleChecker+Valid, 4011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-01 04:01:01,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2704 Valid, 89 Invalid, 4681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [670 Valid, 4011 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-04-01 04:01:01,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2023-04-01 04:01:02,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2754. [2023-04-01 04:01:02,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2754 states, 2712 states have (on average 1.6950589970501475) internal successors, (4597), 2716 states have internal predecessors, (4597), 15 states have call successors, (15), 15 states have call predecessors, (15), 26 states have return successors, (62), 22 states have call predecessors, (62), 14 states have call successors, (62) [2023-04-01 04:01:02,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 4674 transitions. [2023-04-01 04:01:02,163 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 4674 transitions. Word has length 21 [2023-04-01 04:01:02,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:01:02,163 INFO L495 AbstractCegarLoop]: Abstraction has 2754 states and 4674 transitions. [2023-04-01 04:01:02,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-04-01 04:01:02,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 4674 transitions. [2023-04-01 04:01:02,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-04-01 04:01:02,165 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:01:02,165 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] [2023-04-01 04:01:02,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 04:01:02,166 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:01:02,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:01:02,166 INFO L85 PathProgramCache]: Analyzing trace with hash 405052448, now seen corresponding path program 1 times [2023-04-01 04:01:02,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:01:02,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277452186] [2023-04-01 04:01:02,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:01:02,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:01:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:01:02,347 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 04:01:02,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:01:02,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277452186] [2023-04-01 04:01:02,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277452186] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:01:02,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994863887] [2023-04-01 04:01:02,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:01:02,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:01:02,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:01:02,353 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 04:01:02,364 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 04:01:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:01:02,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 04:01:02,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:01:02,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 04:01:02,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 04:01:02,686 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 04:01:02,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994863887] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-01 04:01:02,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-01 04:01:02,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2023-04-01 04:01:02,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766560279] [2023-04-01 04:01:02,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:01:02,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 04:01:02,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:01:02,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 04:01:02,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 04:01:02,692 INFO L87 Difference]: Start difference. First operand 2754 states and 4674 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 04:01:06,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:01:06,174 INFO L93 Difference]: Finished difference Result 8312 states and 14286 transitions. [2023-04-01 04:01:06,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 04:01:06,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2023-04-01 04:01:06,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:01:06,203 INFO L225 Difference]: With dead ends: 8312 [2023-04-01 04:01:06,204 INFO L226 Difference]: Without dead ends: 5563 [2023-04-01 04:01:06,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 04:01:06,213 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1416 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2578 mSolverCounterSat, 884 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 3462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 884 IncrementalHoareTripleChecker+Valid, 2578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-01 04:01:06,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1416 Valid, 64 Invalid, 3462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [884 Valid, 2578 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-01 04:01:06,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5563 states. [2023-04-01 04:01:06,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5563 to 5534. [2023-04-01 04:01:06,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5534 states, 5432 states have (on average 1.631259204712813) internal successors, (8861), 5448 states have internal predecessors, (8861), 27 states have call successors, (27), 27 states have call predecessors, (27), 74 states have return successors, (302), 58 states have call predecessors, (302), 26 states have call successors, (302) [2023-04-01 04:01:06,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5534 states to 5534 states and 9190 transitions. [2023-04-01 04:01:06,385 INFO L78 Accepts]: Start accepts. Automaton has 5534 states and 9190 transitions. Word has length 27 [2023-04-01 04:01:06,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:01:06,385 INFO L495 AbstractCegarLoop]: Abstraction has 5534 states and 9190 transitions. [2023-04-01 04:01:06,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 04:01:06,386 INFO L276 IsEmpty]: Start isEmpty. Operand 5534 states and 9190 transitions. [2023-04-01 04:01:06,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-04-01 04:01:06,388 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:01:06,388 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:01:06,400 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 04:01:06,597 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 04:01:06,597 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:01:06,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:01:06,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1049660651, now seen corresponding path program 1 times [2023-04-01 04:01:06,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:01:06,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845871283] [2023-04-01 04:01:06,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:01:06,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:01:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:01:06,788 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 04:01:06,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:01:06,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845871283] [2023-04-01 04:01:06,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845871283] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:01:06,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366453928] [2023-04-01 04:01:06,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:01:06,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:01:06,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:01:06,792 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 04:01:06,819 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 04:01:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:01:06,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 04:01:06,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:01:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 04:01:06,951 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 04:01:06,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366453928] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:01:06,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 04:01:06,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 04:01:06,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69737204] [2023-04-01 04:01:06,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:01:06,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 04:01:06,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:01:06,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 04:01:06,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 04:01:06,953 INFO L87 Difference]: Start difference. First operand 5534 states and 9190 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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) [2023-04-01 04:01:10,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:01:10,737 INFO L93 Difference]: Finished difference Result 16941 states and 29383 transitions. [2023-04-01 04:01:10,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 04:01:10,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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 37 [2023-04-01 04:01:10,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:01:10,808 INFO L225 Difference]: With dead ends: 16941 [2023-04-01 04:01:10,809 INFO L226 Difference]: Without dead ends: 11412 [2023-04-01 04:01:10,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-04-01 04:01:10,827 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 2290 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4484 mSolverCounterSat, 973 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2290 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 5457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 973 IncrementalHoareTripleChecker+Valid, 4484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-04-01 04:01:10,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2290 Valid, 97 Invalid, 5457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [973 Valid, 4484 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-04-01 04:01:10,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11412 states. [2023-04-01 04:01:11,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11412 to 11243. [2023-04-01 04:01:11,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11243 states, 10961 states have (on average 1.4385548763798923) internal successors, (15768), 11025 states have internal predecessors, (15768), 51 states have call successors, (51), 51 states have call predecessors, (51), 230 states have return successors, (1460), 166 states have call predecessors, (1460), 50 states have call successors, (1460) [2023-04-01 04:01:11,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11243 states to 11243 states and 17279 transitions. [2023-04-01 04:01:11,183 INFO L78 Accepts]: Start accepts. Automaton has 11243 states and 17279 transitions. Word has length 37 [2023-04-01 04:01:11,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:01:11,183 INFO L495 AbstractCegarLoop]: Abstraction has 11243 states and 17279 transitions. [2023-04-01 04:01:11,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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) [2023-04-01 04:01:11,184 INFO L276 IsEmpty]: Start isEmpty. Operand 11243 states and 17279 transitions. [2023-04-01 04:01:11,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-01 04:01:11,191 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:01:11,194 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] [2023-04-01 04:01:11,203 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 04:01:11,401 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 04:01:11,402 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:01:11,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:01:11,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1589216182, now seen corresponding path program 1 times [2023-04-01 04:01:11,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:01:11,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62343661] [2023-04-01 04:01:11,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:01:11,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:01:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:01:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 31 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 04:01:11,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:01:11,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62343661] [2023-04-01 04:01:11,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62343661] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:01:11,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54800784] [2023-04-01 04:01:11,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:01:11,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:01:11,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:01:11,589 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) [2023-04-01 04:01:11,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 04:01:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:01:11,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 04:01:11,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:01:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 04:01:11,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 04:01:11,841 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 31 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 04:01:11,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54800784] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 04:01:11,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [198112903] [2023-04-01 04:01:11,860 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-04-01 04:01:11,860 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 04:01:11,863 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 04:01:11,868 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 04:01:11,868 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 04:01:12,033 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 52 for LOIs [2023-04-01 04:01:12,158 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 04:01:23,777 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 55