/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/Problem13_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:02:48,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:02:48,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:02:48,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:02:48,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:02:48,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:02:48,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:02:48,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:02:48,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:02:48,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:02:48,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:02:48,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:02:48,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:02:48,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:02:48,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:02:48,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:02:48,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:02:48,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:02:48,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:02:48,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:02:48,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:02:48,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:02:48,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:02:48,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:02:48,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 22:02:48,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 22:02:48,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 22:02:48,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 22:02:48,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 22:02:48,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 22:02:48,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:02:48,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:02:48,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:02:48,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:02:48,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:02:48,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:02:48,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:02:48,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:02:48,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:02:48,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:02:48,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:02:48,109 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 22:02:48,131 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:02:48,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:02:48,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:02:48,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:02:48,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:02:48,132 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:02:48,132 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:02:48,132 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:02:48,133 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:02:48,133 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:02:48,133 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:02:48,133 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:02:48,133 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:02:48,133 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:02:48,133 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:02:48,133 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:02:48,133 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:02:48,133 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:02:48,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:02:48,134 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:02:48,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:02:48,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:02:48,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:02:48,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:02:48,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:02:48,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:02:48,134 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:02:48,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:02:48,134 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:02:48,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:02:48,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:02:48,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:02:48,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:02:48,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:02:48,135 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:02:48,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:02:48,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:02:48,135 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:02:48,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:02:48,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:02:48,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:02:48,136 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:02:48,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:02:48,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:02:48,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:02:48,342 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:02:48,343 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:02:48,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label13.c [2023-03-31 22:02:49,386 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:02:49,707 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:02:49,708 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label13.c [2023-03-31 22:02:49,737 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/366952352/248da5eb576543f0b03afa82a063fbef/FLAG5e42f7179 [2023-03-31 22:02:49,750 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/366952352/248da5eb576543f0b03afa82a063fbef [2023-03-31 22:02:49,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:02:49,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:02:49,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:02:49,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:02:49,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:02:49,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:02:49" (1/1) ... [2023-03-31 22:02:49,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e2b8dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:02:49, skipping insertion in model container [2023-03-31 22:02:49,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:02:49" (1/1) ... [2023-03-31 22:02:49,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:02:49,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:02:50,121 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/Problem13_label13.c[8099,8112] [2023-03-31 22:02:50,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:02:50,850 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:02:50,873 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/Problem13_label13.c[8099,8112] [2023-03-31 22:02:51,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:02:51,296 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:02:51,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:02:51 WrapperNode [2023-03-31 22:02:51,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:02:51,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:02:51,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:02:51,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:02:51,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:02:51" (1/1) ... [2023-03-31 22:02:51,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:02:51" (1/1) ... [2023-03-31 22:02:51,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:02:51" (1/1) ... [2023-03-31 22:02:51,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:02:51" (1/1) ... [2023-03-31 22:02:51,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:02:51" (1/1) ... [2023-03-31 22:02:51,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:02:51" (1/1) ... [2023-03-31 22:02:51,483 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:02:51" (1/1) ... [2023-03-31 22:02:51,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:02:51" (1/1) ... [2023-03-31 22:02:51,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:02:51,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:02:51,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:02:51,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:02:51,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:02:51" (1/1) ... [2023-03-31 22:02:51,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:02:51,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:02:51,552 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 22:02:51,571 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 22:02:51,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:02:51,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:02:51,585 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:02:51,585 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-31 22:02:51,585 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-31 22:02:51,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-03-31 22:02:51,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-03-31 22:02:51,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:02:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-31 22:02:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-31 22:02:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-03-31 22:02:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-03-31 22:02:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:02:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:02:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:02:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:02:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 22:02:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 22:02:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:02:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:02:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:02:51,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:02:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:02:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:02:51,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:02:51,662 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:02:51,664 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:02:55,407 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:02:57,836 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:02:57,836 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 22:02:57,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:02:57 BoogieIcfgContainer [2023-03-31 22:02:57,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:02:57,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:02:57,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:02:57,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:02:57,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:02:49" (1/3) ... [2023-03-31 22:02:57,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6026e3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:02:57, skipping insertion in model container [2023-03-31 22:02:57,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:02:51" (2/3) ... [2023-03-31 22:02:57,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6026e3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:02:57, skipping insertion in model container [2023-03-31 22:02:57,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:02:57" (3/3) ... [2023-03-31 22:02:57,846 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label13.c [2023-03-31 22:02:57,860 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:02:57,860 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:02:57,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:02:57,917 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;@17a374a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:02:57,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:02:57,922 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) [2023-03-31 22:02:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 22:02:57,927 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:02:57,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:02:57,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:02:57,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:02:57,932 INFO L85 PathProgramCache]: Analyzing trace with hash -134413547, now seen corresponding path program 1 times [2023-03-31 22:02:57,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:02:57,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196019890] [2023-03-31 22:02:57,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:02:57,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:02:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:02:58,171 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 22:02:58,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:02:58,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196019890] [2023-03-31 22:02:58,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196019890] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:02:58,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:02:58,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 22:02:58,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488706677] [2023-03-31 22:02:58,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:02:58,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:02:58,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:02:58,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:02:58,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:02:58,199 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) [2023-03-31 22:03:01,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:03:01,611 INFO L93 Difference]: Finished difference Result 2068 states and 4065 transitions. [2023-03-31 22:03:01,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:03:01,613 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 22:03:01,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:03:01,630 INFO L225 Difference]: With dead ends: 2068 [2023-03-31 22:03:01,630 INFO L226 Difference]: Without dead ends: 1371 [2023-03-31 22:03:01,637 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 22:03:01,640 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 768 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 2016 mSolverCounterSat, 1051 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 3067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1051 IncrementalHoareTripleChecker+Valid, 2016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-03-31 22:03:01,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 127 Invalid, 3067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1051 Valid, 2016 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-03-31 22:03:01,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2023-03-31 22:03:01,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1368. [2023-03-31 22:03:01,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1350 states have (on average 1.9103703703703703) internal successors, (2579), 1350 states have internal predecessors, (2579), 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) [2023-03-31 22:03:01,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2602 transitions. [2023-03-31 22:03:01,751 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2602 transitions. Word has length 11 [2023-03-31 22:03:01,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:03:01,752 INFO L495 AbstractCegarLoop]: Abstraction has 1368 states and 2602 transitions. [2023-03-31 22:03:01,752 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 22:03:01,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2602 transitions. [2023-03-31 22:03:01,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-03-31 22:03:01,753 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:03:01,753 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] [2023-03-31 22:03:01,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:03:01,754 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:03:01,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:03:01,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1625755678, now seen corresponding path program 1 times [2023-03-31 22:03:01,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:03:01,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59402926] [2023-03-31 22:03:01,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:03:01,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:03:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:03:01,991 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 22:03:01,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:03:01,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59402926] [2023-03-31 22:03:01,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59402926] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:03:01,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:03:01,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 22:03:01,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185703707] [2023-03-31 22:03:01,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:03:01,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 22:03:01,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:03:01,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 22:03:01,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 22:03:01,995 INFO L87 Difference]: Start difference. First operand 1368 states and 2602 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 22:03:05,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:03:05,669 INFO L93 Difference]: Finished difference Result 4167 states and 7945 transitions. [2023-03-31 22:03:05,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 22:03:05,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 32 [2023-03-31 22:03:05,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:03:05,688 INFO L225 Difference]: With dead ends: 4167 [2023-03-31 22:03:05,689 INFO L226 Difference]: Without dead ends: 2804 [2023-03-31 22:03:05,698 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 22:03:05,701 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 2433 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 3741 mSolverCounterSat, 1163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 4904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1163 IncrementalHoareTripleChecker+Valid, 3741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-03-31 22:03:05,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2433 Valid, 111 Invalid, 4904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1163 Valid, 3741 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-03-31 22:03:05,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2023-03-31 22:03:05,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2737. [2023-03-31 22:03:05,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2737 states, 2695 states have (on average 1.6059369202226346) internal successors, (4328), 2699 states have internal predecessors, (4328), 15 states have call successors, (15), 15 states have call predecessors, (15), 26 states have return successors, (74), 22 states have call predecessors, (74), 14 states have call successors, (74) [2023-03-31 22:03:05,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 4417 transitions. [2023-03-31 22:03:05,809 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 4417 transitions. Word has length 32 [2023-03-31 22:03:05,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:03:05,810 INFO L495 AbstractCegarLoop]: Abstraction has 2737 states and 4417 transitions. [2023-03-31 22:03:05,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 22:03:05,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 4417 transitions. [2023-03-31 22:03:05,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-03-31 22:03:05,812 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:03:05,812 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, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:03:05,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 22:03:05,812 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:03:05,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:03:05,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2114251825, now seen corresponding path program 1 times [2023-03-31 22:03:05,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:03:05,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568305983] [2023-03-31 22:03:05,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:03:05,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:03:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:03:06,062 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-31 22:03:06,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:03:06,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568305983] [2023-03-31 22:03:06,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568305983] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:03:06,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528901490] [2023-03-31 22:03:06,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:03:06,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:03:06,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:03:06,066 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 22:03:06,069 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 22:03:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:03:06,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 22:03:06,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:03:06,250 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 22:03:06,250 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 22:03:06,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528901490] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:03:06,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 22:03:06,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-03-31 22:03:06,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693897806] [2023-03-31 22:03:06,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:03:06,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 22:03:06,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:03:06,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 22:03:06,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-31 22:03:06,252 INFO L87 Difference]: Start difference. First operand 2737 states and 4417 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 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 22:03:10,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:03:10,705 INFO L93 Difference]: Finished difference Result 8371 states and 13811 transitions. [2023-03-31 22:03:10,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 22:03:10,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 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 44 [2023-03-31 22:03:10,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:03:10,726 INFO L225 Difference]: With dead ends: 8371 [2023-03-31 22:03:10,727 INFO L226 Difference]: Without dead ends: 5639 [2023-03-31 22:03:10,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-03-31 22:03:10,733 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 2190 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4395 mSolverCounterSat, 1277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2190 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 5672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1277 IncrementalHoareTripleChecker+Valid, 4395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-03-31 22:03:10,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2190 Valid, 96 Invalid, 5672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1277 Valid, 4395 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-03-31 22:03:10,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2023-03-31 22:03:10,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 5521. [2023-03-31 22:03:10,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5521 states, 5405 states have (on average 1.4277520814061055) internal successors, (7717), 5427 states have internal predecessors, (7717), 27 states have call successors, (27), 27 states have call predecessors, (27), 88 states have return successors, (382), 66 states have call predecessors, (382), 26 states have call successors, (382) [2023-03-31 22:03:10,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5521 states to 5521 states and 8126 transitions. [2023-03-31 22:03:10,855 INFO L78 Accepts]: Start accepts. Automaton has 5521 states and 8126 transitions. Word has length 44 [2023-03-31 22:03:10,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:03:10,855 INFO L495 AbstractCegarLoop]: Abstraction has 5521 states and 8126 transitions. [2023-03-31 22:03:10,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 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 22:03:10,856 INFO L276 IsEmpty]: Start isEmpty. Operand 5521 states and 8126 transitions. [2023-03-31 22:03:10,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-03-31 22:03:10,863 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:03:10,863 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:03:10,869 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 22:03:11,070 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 22:03:11,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:03:11,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:03:11,071 INFO L85 PathProgramCache]: Analyzing trace with hash 521750632, now seen corresponding path program 1 times [2023-03-31 22:03:11,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:03:11,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219623301] [2023-03-31 22:03:11,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:03:11,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:03:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:03:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-03-31 22:03:11,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:03:11,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219623301] [2023-03-31 22:03:11,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219623301] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:03:11,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945603406] [2023-03-31 22:03:11,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:03:11,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:03:11,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:03:11,270 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 22:03:11,303 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 22:03:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:03:11,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 22:03:11,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:03:11,435 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-03-31 22:03:11,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 22:03:11,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945603406] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:03:11,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 22:03:11,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-03-31 22:03:11,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072654322] [2023-03-31 22:03:11,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:03:11,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 22:03:11,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:03:11,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 22:03:11,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-31 22:03:11,436 INFO L87 Difference]: Start difference. First operand 5521 states and 8126 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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 22:03:15,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:03:15,495 INFO L93 Difference]: Finished difference Result 14103 states and 21166 transitions. [2023-03-31 22:03:15,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 22:03:15,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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 62 [2023-03-31 22:03:15,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:03:15,525 INFO L225 Difference]: With dead ends: 14103 [2023-03-31 22:03:15,525 INFO L226 Difference]: Without dead ends: 8587 [2023-03-31 22:03:15,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 22:03:15,536 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 2040 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4472 mSolverCounterSat, 970 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 5442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 970 IncrementalHoareTripleChecker+Valid, 4472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-03-31 22:03:15,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2040 Valid, 103 Invalid, 5442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [970 Valid, 4472 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-03-31 22:03:15,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8587 states. [2023-03-31 22:03:15,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8587 to 8395. [2023-03-31 22:03:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8395 states, 8168 states have (on average 1.3194172380019589) internal successors, (10777), 8223 states have internal predecessors, (10777), 39 states have call successors, (39), 39 states have call predecessors, (39), 187 states have return successors, (949), 132 states have call predecessors, (949), 38 states have call successors, (949) [2023-03-31 22:03:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8395 states to 8395 states and 11765 transitions. [2023-03-31 22:03:15,709 INFO L78 Accepts]: Start accepts. Automaton has 8395 states and 11765 transitions. Word has length 62 [2023-03-31 22:03:15,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:03:15,710 INFO L495 AbstractCegarLoop]: Abstraction has 8395 states and 11765 transitions. [2023-03-31 22:03:15,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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 22:03:15,710 INFO L276 IsEmpty]: Start isEmpty. Operand 8395 states and 11765 transitions. [2023-03-31 22:03:15,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-03-31 22:03:15,713 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:03:15,715 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 22:03:15,723 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 22:03:15,924 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 22:03:15,924 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:03:15,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:03:15,925 INFO L85 PathProgramCache]: Analyzing trace with hash -725122655, now seen corresponding path program 1 times [2023-03-31 22:03:15,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:03:15,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250860177] [2023-03-31 22:03:15,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:03:15,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:03:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:03:16,135 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-03-31 22:03:16,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:03:16,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250860177] [2023-03-31 22:03:16,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250860177] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:03:16,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165851823] [2023-03-31 22:03:16,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:03:16,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:03:16,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:03:16,139 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 22:03:16,142 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 22:03:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:03:16,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-31 22:03:16,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:03:16,343 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-03-31 22:03:16,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:03:16,477 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-03-31 22:03:16,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165851823] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:03:16,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1022526893] [2023-03-31 22:03:16,496 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-03-31 22:03:16,496 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:03:16,498 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:03:16,502 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:03:16,502 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:03:16,613 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 49 for LOIs [2023-03-31 22:03:16,794 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 51 [2023-03-31 22:03:17,180 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 10786 conjuctions. This might take some time... [2023-03-31 22:03:17,311 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 39 conjuctions. [2023-03-31 22:03:17,335 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 10 [2023-03-31 22:03:18,253 INFO L197 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 56 for LOIs [2023-03-31 22:03:18,496 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 52 [2023-03-31 22:03:19,841 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 37530 conjuctions. This might take some time... [2023-03-31 22:03:22,466 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 190 conjuctions.