/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/eca-rers2012/Problem16_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 04:19:43,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 04:19:43,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 04:19:43,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 04:19:43,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 04:19:43,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 04:19:43,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 04:19:43,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 04:19:43,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 04:19:43,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 04:19:43,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 04:19:43,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 04:19:43,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 04:19:43,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 04:19:43,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 04:19:43,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 04:19:43,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 04:19:43,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 04:19:43,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 04:19:43,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 04:19:43,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 04:19:43,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 04:19:43,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 04:19:43,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 04:19:43,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 04:19:43,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 04:19:43,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 04:19:43,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 04:19:43,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 04:19:43,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 04:19:43,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 04:19:43,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 04:19:43,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 04:19:43,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 04:19:43,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 04:19:43,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 04:19:43,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 04:19:43,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 04:19:43,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 04:19:43,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 04:19:43,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 04:19:43,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 04:19:43,651 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 04:19:43,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 04:19:43,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 04:19:43,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 04:19:43,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 04:19:43,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 04:19:43,653 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 04:19:43,653 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 04:19:43,653 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 04:19:43,653 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 04:19:43,654 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 04:19:43,654 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 04:19:43,654 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 04:19:43,654 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 04:19:43,654 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 04:19:43,654 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 04:19:43,654 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 04:19:43,654 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 04:19:43,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 04:19:43,655 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 04:19:43,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 04:19:43,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 04:19:43,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 04:19:43,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 04:19:43,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 04:19:43,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 04:19:43,656 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 04:19:43,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 04:19:43,656 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 04:19:43,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 04:19:43,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 04:19:43,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 04:19:43,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:19:43,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 04:19:43,657 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 04:19:43,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 04:19:43,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 04:19:43,657 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 04:19:43,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 04:19:43,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 04:19:43,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 04:19:43,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 04:19:43,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 04:19:43,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 04:19:43,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 04:19:43,920 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 04:19:43,921 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 04:19:43,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label44.c [2023-04-01 04:19:44,924 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 04:19:45,380 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 04:19:45,381 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label44.c [2023-04-01 04:19:45,390 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/751bd4a63/96407669637d4684a4fe4fd513f63032/FLAGaa842f368 [2023-04-01 04:19:45,400 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/751bd4a63/96407669637d4684a4fe4fd513f63032 [2023-04-01 04:19:45,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 04:19:45,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 04:19:45,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 04:19:45,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 04:19:45,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 04:19:45,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:19:45" (1/1) ... [2023-04-01 04:19:45,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11299963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:19:45, skipping insertion in model container [2023-04-01 04:19:45,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:19:45" (1/1) ... [2023-04-01 04:19:45,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 04:19:45,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 04:19:45,555 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_label44.c[3342,3355] [2023-04-01 04:19:45,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:19:45,861 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 04:19:45,880 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_label44.c[3342,3355] [2023-04-01 04:19:45,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:19:46,000 INFO L208 MainTranslator]: Completed translation [2023-04-01 04:19:46,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:19:46 WrapperNode [2023-04-01 04:19:46,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 04:19:46,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 04:19:46,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 04:19:46,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 04:19:46,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:19:46" (1/1) ... [2023-04-01 04:19:46,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:19:46" (1/1) ... [2023-04-01 04:19:46,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:19:46" (1/1) ... [2023-04-01 04:19:46,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:19:46" (1/1) ... [2023-04-01 04:19:46,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:19:46" (1/1) ... [2023-04-01 04:19:46,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:19:46" (1/1) ... [2023-04-01 04:19:46,132 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:19:46" (1/1) ... [2023-04-01 04:19:46,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:19:46" (1/1) ... [2023-04-01 04:19:46,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 04:19:46,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 04:19:46,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 04:19:46,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 04:19:46,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:19:46" (1/1) ... [2023-04-01 04:19:46,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:19:46,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:19:46,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 04:19:46,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 04:19:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 04:19:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 04:19:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 04:19:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 04:19:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 04:19:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 04:19:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 04:19:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 04:19:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 04:19:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 04:19:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 04:19:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 04:19:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 04:19:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 04:19:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 04:19:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 04:19:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 04:19:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 04:19:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 04:19:46,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 04:19:46,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 04:19:46,372 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 04:19:46,374 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 04:19:47,904 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 04:19:48,730 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 04:19:48,730 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 04:19:48,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:19:48 BoogieIcfgContainer [2023-04-01 04:19:48,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 04:19:48,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 04:19:48,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 04:19:48,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 04:19:48,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 04:19:45" (1/3) ... [2023-04-01 04:19:48,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263cb947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:19:48, skipping insertion in model container [2023-04-01 04:19:48,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:19:46" (2/3) ... [2023-04-01 04:19:48,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263cb947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:19:48, skipping insertion in model container [2023-04-01 04:19:48,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:19:48" (3/3) ... [2023-04-01 04:19:48,738 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label44.c [2023-04-01 04:19:48,749 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 04:19:48,750 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 04:19:48,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 04:19:48,800 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;@41ae5054, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 04:19:48,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 04:19:48,806 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) [2023-04-01 04:19:48,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-04-01 04:19:48,811 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:19:48,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:19:48,812 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:19:48,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:19:48,816 INFO L85 PathProgramCache]: Analyzing trace with hash -510223801, now seen corresponding path program 1 times [2023-04-01 04:19:48,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:19:48,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087494457] [2023-04-01 04:19:48,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:19:48,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:19:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:19:49,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 04:19:49,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:19:49,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087494457] [2023-04-01 04:19:49,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087494457] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:19:49,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:19:49,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 04:19:49,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753695562] [2023-04-01 04:19:49,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:19:49,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 04:19:49,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:19:49,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 04:19:49,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 04:19:49,161 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) [2023-04-01 04:19:50,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:19:50,122 INFO L93 Difference]: Finished difference Result 718 states and 1389 transitions. [2023-04-01 04:19:50,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 04:19:50,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-04-01 04:19:50,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:19:50,138 INFO L225 Difference]: With dead ends: 718 [2023-04-01 04:19:50,138 INFO L226 Difference]: Without dead ends: 471 [2023-04-01 04:19:50,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 04:19:50,150 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 307 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 04:19:50,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 54 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 04:19:50,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2023-04-01 04:19:50,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 462. [2023-04-01 04:19:50,251 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) [2023-04-01 04:19:50,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 877 transitions. [2023-04-01 04:19:50,257 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 877 transitions. Word has length 11 [2023-04-01 04:19:50,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:19:50,258 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 877 transitions. [2023-04-01 04:19:50,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 04:19:50,270 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 877 transitions. [2023-04-01 04:19:50,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-04-01 04:19:50,272 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:19:50,272 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] [2023-04-01 04:19:50,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 04:19:50,273 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:19:50,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:19:50,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2143732003, now seen corresponding path program 1 times [2023-04-01 04:19:50,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:19:50,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543681676] [2023-04-01 04:19:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:19:50,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:19:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:19:50,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 04:19:50,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:19:50,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543681676] [2023-04-01 04:19:50,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543681676] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:19:50,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:19:50,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 04:19:50,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399453226] [2023-04-01 04:19:50,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:19:50,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 04:19:50,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:19:50,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 04:19:50,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 04:19:50,718 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) [2023-04-01 04:19:52,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:19:52,374 INFO L93 Difference]: Finished difference Result 1390 states and 2669 transitions. [2023-04-01 04:19:52,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 04:19:52,377 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 [2023-04-01 04:19:52,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:19:52,383 INFO L225 Difference]: With dead ends: 1390 [2023-04-01 04:19:52,383 INFO L226 Difference]: Without dead ends: 933 [2023-04-01 04:19:52,385 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 [2023-04-01 04:19:52,386 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 853 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 04:19:52,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 43 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 04:19:52,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2023-04-01 04:19:52,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 917. [2023-04-01 04:19:52,451 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) [2023-04-01 04:19:52,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1678 transitions. [2023-04-01 04:19:52,474 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1678 transitions. Word has length 44 [2023-04-01 04:19:52,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:19:52,475 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 1678 transitions. [2023-04-01 04:19:52,475 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) [2023-04-01 04:19:52,475 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1678 transitions. [2023-04-01 04:19:52,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-01 04:19:52,479 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:19:52,479 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] [2023-04-01 04:19:52,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 04:19:52,480 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:19:52,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:19:52,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1466033483, now seen corresponding path program 1 times [2023-04-01 04:19:52,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:19:52,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826184594] [2023-04-01 04:19:52,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:19:52,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:19:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:19:52,947 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 04:19:52,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:19:52,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826184594] [2023-04-01 04:19:52,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826184594] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:19:52,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291198212] [2023-04-01 04:19:52,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:19:52,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:19:52,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:19:52,952 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 04:19:52,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 04:19:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:19:53,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 04:19:53,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:19:53,241 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 04:19:53,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 04:19:53,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291198212] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:19:53,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 04:19:53,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 04:19:53,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252005442] [2023-04-01 04:19:53,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:19:53,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 04:19:53,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:19:53,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 04:19:53,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-01 04:19:53,243 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) [2023-04-01 04:19:54,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:19:54,511 INFO L93 Difference]: Finished difference Result 2749 states and 5075 transitions. [2023-04-01 04:19:54,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 04:19:54,512 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 [2023-04-01 04:19:54,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:19:54,521 INFO L225 Difference]: With dead ends: 2749 [2023-04-01 04:19:54,521 INFO L226 Difference]: Without dead ends: 1837 [2023-04-01 04:19:54,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-01 04:19:54,526 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 887 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2023-04-01 04:19:54,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 37 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-01 04:19:54,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2023-04-01 04:19:54,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1168. [2023-04-01 04:19:54,564 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) [2023-04-01 04:19:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 2048 transitions. [2023-04-01 04:19:54,568 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 2048 transitions. Word has length 95 [2023-04-01 04:19:54,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:19:54,569 INFO L495 AbstractCegarLoop]: Abstraction has 1168 states and 2048 transitions. [2023-04-01 04:19:54,569 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) [2023-04-01 04:19:54,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 2048 transitions. [2023-04-01 04:19:54,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-01 04:19:54,578 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:19:54,578 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] [2023-04-01 04:19:54,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 04:19:54,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:19:54,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:19:54,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:19:54,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1928865072, now seen corresponding path program 1 times [2023-04-01 04:19:54,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:19:54,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085548655] [2023-04-01 04:19:54,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:19:54,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:19:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:19:55,154 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 15 proven. 76 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-04-01 04:19:55,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:19:55,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085548655] [2023-04-01 04:19:55,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085548655] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:19:55,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109819450] [2023-04-01 04:19:55,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:19:55,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:19:55,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:19:55,161 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 04:19:55,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 04:19:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:19:55,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 04:19:55,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:19:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-04-01 04:19:55,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 04:19:55,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109819450] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:19:55,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 04:19:55,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 04:19:55,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101669909] [2023-04-01 04:19:55,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:19:55,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 04:19:55,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:19:55,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 04:19:55,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 04:19:55,413 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) [2023-04-01 04:19:56,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:19:56,872 INFO L93 Difference]: Finished difference Result 2591 states and 4491 transitions. [2023-04-01 04:19:56,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 04:19:56,875 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 [2023-04-01 04:19:56,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:19:56,881 INFO L225 Difference]: With dead ends: 2591 [2023-04-01 04:19:56,881 INFO L226 Difference]: Without dead ends: 1428 [2023-04-01 04:19:56,884 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 [2023-04-01 04:19:56,885 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, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 04:19:56,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 46 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 04:19:56,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2023-04-01 04:19:56,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1410. [2023-04-01 04:19:56,914 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) [2023-04-01 04:19:56,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 2176 transitions. [2023-04-01 04:19:56,920 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 2176 transitions. Word has length 151 [2023-04-01 04:19:56,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:19:56,920 INFO L495 AbstractCegarLoop]: Abstraction has 1410 states and 2176 transitions. [2023-04-01 04:19:56,920 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) [2023-04-01 04:19:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 2176 transitions. [2023-04-01 04:19:56,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-04-01 04:19:56,923 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:19:56,923 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] [2023-04-01 04:19:56,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 04:19:57,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-01 04:19:57,128 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:19:57,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:19:57,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1575824999, now seen corresponding path program 1 times [2023-04-01 04:19:57,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:19:57,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50966867] [2023-04-01 04:19:57,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:19:57,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:19:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:19:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 82 proven. 82 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-04-01 04:19:57,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:19:57,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50966867] [2023-04-01 04:19:57,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50966867] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:19:57,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367407011] [2023-04-01 04:19:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:19:57,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:19:57,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:19:57,511 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 04:19:57,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 04:19:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:19:57,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 04:19:57,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:19:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 230 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-04-01 04:19:57,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 04:19:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 82 proven. 82 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-04-01 04:19:58,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367407011] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 04:19:58,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1971200328] [2023-04-01 04:19:58,085 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2023-04-01 04:19:58,086 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 04:19:58,088 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 04:19:58,091 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 04:19:58,091 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 04:19:58,280 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 46 for LOIs [2023-04-01 04:19:58,487 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 24 [2023-04-01 04:20:01,551 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 73732 conjuctions. This might take some time... [2023-04-01 04:20:09,011 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 1246 conjuctions. [2023-04-01 04:20:41,593 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 37