/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/Problem16_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:19:16,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:19:16,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:19:16,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:19:16,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:19:16,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:19:16,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:19:16,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:19:16,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:19:16,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:19:16,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:19:16,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:19:16,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:19:16,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:19:16,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:19:16,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:19:16,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:19:16,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:19:16,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:19:16,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:19:16,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:19:16,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:19:16,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:19:16,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:19:16,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 22:19:16,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 22:19:16,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 22:19:16,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 22:19:16,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 22:19:16,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 22:19:16,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 22:19:16,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 22:19:16,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 22:19:16,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 22:19:16,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 22:19:16,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 22:19:16,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 22:19:16,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 22:19:16,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:19:16,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:19:16,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:19:16,699 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 22:19:16,733 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:19:16,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:19:16,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:19:16,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:19:16,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:19:16,734 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:19:16,734 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:19:16,735 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:19:16,735 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:19:16,735 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:19:16,735 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:19:16,736 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:19:16,736 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:19:16,736 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:19:16,736 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:19:16,736 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:19:16,736 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:19:16,736 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:19:16,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:19:16,737 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:19:16,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:19:16,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:19:16,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:19:16,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:19:16,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:19:16,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:19:16,738 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:19:16,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:19:16,738 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:19:16,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:19:16,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:19:16,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:19:16,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:19:16,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:19:16,739 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:19:16,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:19:16,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:19:16,739 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:19:16,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:19:16,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:19:16,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:19:16,740 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:19:16,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:19:16,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:19:16,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:19:16,957 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:19:16,957 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:19:16,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label56.c [2023-03-31 22:19:18,136 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:19:18,471 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:19:18,471 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label56.c [2023-03-31 22:19:18,490 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd84ad70c/e96bde042c0e4309af1a15c1984c3d83/FLAG10b599036 [2023-03-31 22:19:18,503 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd84ad70c/e96bde042c0e4309af1a15c1984c3d83 [2023-03-31 22:19:18,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:19:18,507 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:19:18,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:19:18,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:19:18,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:19:18,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:19:18" (1/1) ... [2023-03-31 22:19:18,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9506c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:19:18, skipping insertion in model container [2023-03-31 22:19:18,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:19:18" (1/1) ... [2023-03-31 22:19:18,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:19:18,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:19:18,784 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/Problem16_label56.c[3626,3639] [2023-03-31 22:19:19,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:19:19,117 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:19:19,132 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/Problem16_label56.c[3626,3639] [2023-03-31 22:19:19,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:19:19,315 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:19:19,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:19:19 WrapperNode [2023-03-31 22:19:19,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:19:19,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:19:19,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:19:19,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:19:19,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:19:19" (1/1) ... [2023-03-31 22:19:19,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:19:19" (1/1) ... [2023-03-31 22:19:19,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:19:19" (1/1) ... [2023-03-31 22:19:19,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:19:19" (1/1) ... [2023-03-31 22:19:19,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:19:19" (1/1) ... [2023-03-31 22:19:19,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:19:19" (1/1) ... [2023-03-31 22:19:19,454 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:19:19" (1/1) ... [2023-03-31 22:19:19,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:19:19" (1/1) ... [2023-03-31 22:19:19,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:19:19,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:19:19,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:19:19,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:19:19,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:19:19" (1/1) ... [2023-03-31 22:19:19,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:19:19,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:19:19,519 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 22:19:19,522 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 22:19:19,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:19:19,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:19:19,554 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:19:19,554 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-31 22:19:19,554 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-31 22:19:19,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:19:19,554 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-31 22:19:19,554 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-31 22:19:19,554 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:19:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:19:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:19:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:19:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 22:19:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 22:19:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:19:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:19:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:19:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:19:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:19:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:19:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:19:19,614 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:19:19,615 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:19:21,427 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:19:22,348 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:19:22,349 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 22:19:22,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:19:22 BoogieIcfgContainer [2023-03-31 22:19:22,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:19:22,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:19:22,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:19:22,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:19:22,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:19:18" (1/3) ... [2023-03-31 22:19:22,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b5ce65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:19:22, skipping insertion in model container [2023-03-31 22:19:22,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:19:19" (2/3) ... [2023-03-31 22:19:22,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b5ce65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:19:22, skipping insertion in model container [2023-03-31 22:19:22,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:19:22" (3/3) ... [2023-03-31 22:19:22,363 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label56.c [2023-03-31 22:19:22,378 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:19:22,378 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 22:19:22,435 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:19:22,441 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;@37fa19dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:19:22,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 22:19:22,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 244 states, 234 states have (on average 1.9572649572649572) internal successors, (458), 235 states have internal predecessors, (458), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-31 22:19:22,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 22:19:22,453 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:19:22,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:19:22,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:19:22,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:19:22,459 INFO L85 PathProgramCache]: Analyzing trace with hash -706736538, now seen corresponding path program 1 times [2023-03-31 22:19:22,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:19:22,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883888467] [2023-03-31 22:19:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:19:22,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:19:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:19:22,796 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 22:19:22,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:19:22,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883888467] [2023-03-31 22:19:22,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883888467] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:19:22,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:19:22,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 22:19:22,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566715460] [2023-03-31 22:19:22,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:19:22,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 22:19:22,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:19:22,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 22:19:22,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 22:19:22,842 INFO L87 Difference]: Start difference. First operand has 244 states, 234 states have (on average 1.9572649572649572) internal successors, (458), 235 states have internal predecessors, (458), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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 22:19:24,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:19:24,046 INFO L93 Difference]: Finished difference Result 718 states and 1389 transitions. [2023-03-31 22:19:24,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 22:19:24,050 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 22:19:24,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:19:24,069 INFO L225 Difference]: With dead ends: 718 [2023-03-31 22:19:24,069 INFO L226 Difference]: Without dead ends: 471 [2023-03-31 22:19:24,077 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 22:19:24,079 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 307 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:19:24,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 54 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 22:19:24,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2023-03-31 22:19:24,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 462. [2023-03-31 22:19:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 452 states have (on average 1.915929203539823) internal successors, (866), 452 states have internal predecessors, (866), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-03-31 22:19:24,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 877 transitions. [2023-03-31 22:19:24,137 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 877 transitions. Word has length 11 [2023-03-31 22:19:24,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:19:24,137 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 877 transitions. [2023-03-31 22:19:24,137 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 22:19:24,138 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 877 transitions. [2023-03-31 22:19:24,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-03-31 22:19:24,139 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:19:24,140 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:19:24,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:19:24,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:19:24,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:19:24,141 INFO L85 PathProgramCache]: Analyzing trace with hash 156904700, now seen corresponding path program 1 times [2023-03-31 22:19:24,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:19:24,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549617702] [2023-03-31 22:19:24,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:19:24,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:19:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:19:24,387 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 22:19:24,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:19:24,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549617702] [2023-03-31 22:19:24,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549617702] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:19:24,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:19:24,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 22:19:24,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392482213] [2023-03-31 22:19:24,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:19:24,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 22:19:24,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:19:24,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 22:19:24,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 22:19:24,392 INFO L87 Difference]: Start difference. First operand 462 states and 877 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 22:19:25,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:19:25,753 INFO L93 Difference]: Finished difference Result 1390 states and 2669 transitions. [2023-03-31 22:19:25,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 22:19:25,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 44 [2023-03-31 22:19:25,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:19:25,763 INFO L225 Difference]: With dead ends: 1390 [2023-03-31 22:19:25,763 INFO L226 Difference]: Without dead ends: 933 [2023-03-31 22:19:25,765 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 22:19:25,766 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 853 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 22:19:25,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 43 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 22:19:25,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2023-03-31 22:19:25,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 917. [2023-03-31 22:19:25,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 900 states have (on average 1.8311111111111111) internal successors, (1648), 903 states have internal predecessors, (1648), 7 states have call successors, (7), 7 states have call predecessors, (7), 9 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2023-03-31 22:19:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1678 transitions. [2023-03-31 22:19:25,811 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1678 transitions. Word has length 44 [2023-03-31 22:19:25,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:19:25,811 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 1678 transitions. [2023-03-31 22:19:25,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 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 22:19:25,812 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1678 transitions. [2023-03-31 22:19:25,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-03-31 22:19:25,814 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:19:25,814 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:19:25,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 22:19:25,815 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:19:25,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:19:25,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1385321706, now seen corresponding path program 1 times [2023-03-31 22:19:25,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:19:25,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062601801] [2023-03-31 22:19:25,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:19:25,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:19:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:19:26,049 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-03-31 22:19:26,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:19:26,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062601801] [2023-03-31 22:19:26,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062601801] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:19:26,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328502498] [2023-03-31 22:19:26,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:19:26,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:19:26,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:19:26,053 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 22:19:26,078 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 22:19:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:19:26,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 22:19:26,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:19:26,415 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 22:19:26,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 22:19:26,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328502498] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:19:26,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 22:19:26,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-03-31 22:19:26,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940294469] [2023-03-31 22:19:26,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:19:26,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 22:19:26,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:19:26,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 22:19:26,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-03-31 22:19:26,418 INFO L87 Difference]: Start difference. First operand 917 states and 1678 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 22:19:27,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:19:27,853 INFO L93 Difference]: Finished difference Result 2749 states and 5075 transitions. [2023-03-31 22:19:27,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 22:19:27,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 95 [2023-03-31 22:19:27,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:19:27,863 INFO L225 Difference]: With dead ends: 2749 [2023-03-31 22:19:27,864 INFO L226 Difference]: Without dead ends: 1837 [2023-03-31 22:19:27,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-03-31 22:19:27,867 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 887 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 22:19:27,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 37 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 22:19:27,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2023-03-31 22:19:27,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1168. [2023-03-31 22:19:27,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1140 states have (on average 1.7456140350877194) internal successors, (1990), 1148 states have internal predecessors, (1990), 10 states have call successors, (10), 10 states have call predecessors, (10), 17 states have return successors, (48), 9 states have call predecessors, (48), 9 states have call successors, (48) [2023-03-31 22:19:27,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 2048 transitions. [2023-03-31 22:19:27,912 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 2048 transitions. Word has length 95 [2023-03-31 22:19:27,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:19:27,912 INFO L495 AbstractCegarLoop]: Abstraction has 1168 states and 2048 transitions. [2023-03-31 22:19:27,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 22:19:27,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 2048 transitions. [2023-03-31 22:19:27,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-03-31 22:19:27,917 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:19:27,917 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:19:27,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 22:19:28,123 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 22:19:28,123 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:19:28,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:19:28,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2141613385, now seen corresponding path program 1 times [2023-03-31 22:19:28,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:19:28,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825590585] [2023-03-31 22:19:28,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:19:28,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:19:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:19:28,520 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 15 proven. 76 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-03-31 22:19:28,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:19:28,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825590585] [2023-03-31 22:19:28,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825590585] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:19:28,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572413245] [2023-03-31 22:19:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:19:28,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:19:28,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:19:28,525 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 22:19:28,528 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 22:19:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:19:28,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 22:19:28,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:19:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-03-31 22:19:28,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 22:19:28,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572413245] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:19:28,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 22:19:28,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-03-31 22:19:28,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547733530] [2023-03-31 22:19:28,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:19:28,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 22:19:28,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:19:28,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 22:19:28,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-31 22:19:28,806 INFO L87 Difference]: Start difference. First operand 1168 states and 2048 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 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 22:19:30,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:19:30,197 INFO L93 Difference]: Finished difference Result 2591 states and 4491 transitions. [2023-03-31 22:19:30,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 22:19:30,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 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 151 [2023-03-31 22:19:30,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:19:30,204 INFO L225 Difference]: With dead ends: 2591 [2023-03-31 22:19:30,204 INFO L226 Difference]: Without dead ends: 1428 [2023-03-31 22:19:30,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-03-31 22:19:30,208 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 799 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 22:19:30,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 46 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 22:19:30,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2023-03-31 22:19:30,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1410. [2023-03-31 22:19:30,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1374 states have (on average 1.5254730713245996) internal successors, (2096), 1386 states have internal predecessors, (2096), 12 states have call successors, (12), 12 states have call predecessors, (12), 23 states have return successors, (68), 11 states have call predecessors, (68), 11 states have call successors, (68) [2023-03-31 22:19:30,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 2176 transitions. [2023-03-31 22:19:30,247 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 2176 transitions. Word has length 151 [2023-03-31 22:19:30,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:19:30,248 INFO L495 AbstractCegarLoop]: Abstraction has 1410 states and 2176 transitions. [2023-03-31 22:19:30,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 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 22:19:30,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 2176 transitions. [2023-03-31 22:19:30,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-03-31 22:19:30,258 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:19:30,258 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:19:30,267 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 22:19:30,464 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 22:19:30,465 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:19:30,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:19:30,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1434676424, now seen corresponding path program 1 times [2023-03-31 22:19:30,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:19:30,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741198439] [2023-03-31 22:19:30,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:19:30,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:19:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:19:30,788 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 82 proven. 82 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-03-31 22:19:30,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:19:30,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741198439] [2023-03-31 22:19:30,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741198439] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:19:30,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896245310] [2023-03-31 22:19:30,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:19:30,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:19:30,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:19:30,794 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 22:19:30,863 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 22:19:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:19:31,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-31 22:19:31,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:19:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 230 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-03-31 22:19:31,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 22:19:31,408 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 82 proven. 82 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-03-31 22:19:31,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896245310] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 22:19:31,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [889960982] [2023-03-31 22:19:31,436 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2023-03-31 22:19:31,436 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 22:19:31,439 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 22:19:31,443 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 22:19:31,444 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 22:19:31,582 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 46 for LOIs [2023-03-31 22:19:31,738 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 27 [2023-03-31 22:19:31,901 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 34 [2023-03-31 22:19:33,005 INFO L197 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 50 for LOIs [2023-03-31 22:19:33,073 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 27 [2023-03-31 22:19:34,446 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 34 [2023-03-31 22:19:38,403 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 83448 conjuctions. This might take some time... [2023-03-31 22:19:50,002 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 1656 conjuctions.