/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/Problem05_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 03:30:11,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 03:30:11,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 03:30:11,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 03:30:11,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 03:30:11,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 03:30:11,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 03:30:11,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 03:30:11,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 03:30:11,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 03:30:11,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 03:30:11,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 03:30:11,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 03:30:11,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 03:30:11,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 03:30:11,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 03:30:11,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 03:30:11,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 03:30:11,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 03:30:11,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 03:30:11,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 03:30:11,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 03:30:11,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 03:30:11,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 03:30:11,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 03:30:11,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 03:30:11,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 03:30:11,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 03:30:11,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 03:30:11,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 03:30:11,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 03:30:11,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 03:30:11,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 03:30:11,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 03:30:11,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 03:30:11,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 03:30:11,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 03:30:11,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 03:30:11,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 03:30:11,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 03:30:11,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 03:30:11,146 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 03:30:11,167 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 03:30:11,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 03:30:11,168 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 03:30:11,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 03:30:11,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 03:30:11,168 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 03:30:11,169 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 03:30:11,169 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 03:30:11,169 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 03:30:11,169 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 03:30:11,169 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 03:30:11,169 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 03:30:11,170 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 03:30:11,170 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 03:30:11,170 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 03:30:11,170 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 03:30:11,170 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 03:30:11,170 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 03:30:11,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 03:30:11,170 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 03:30:11,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 03:30:11,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 03:30:11,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 03:30:11,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 03:30:11,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 03:30:11,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 03:30:11,171 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 03:30:11,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 03:30:11,171 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 03:30:11,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 03:30:11,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 03:30:11,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 03:30:11,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 03:30:11,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 03:30:11,172 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 03:30:11,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 03:30:11,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 03:30:11,172 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 03:30:11,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 03:30:11,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 03:30:11,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 03:30:11,172 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 03:30:11,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 03:30:11,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 03:30:11,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 03:30:11,384 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 03:30:11,385 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 03:30:11,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem05_label14.c [2023-04-01 03:30:12,407 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 03:30:12,834 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 03:30:12,834 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label14.c [2023-04-01 03:30:12,878 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4d148e4e/5c84364fbd5c4fce9c540dbd1dde6511/FLAGb8bd519dd [2023-04-01 03:30:12,890 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4d148e4e/5c84364fbd5c4fce9c540dbd1dde6511 [2023-04-01 03:30:12,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 03:30:12,893 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 03:30:12,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 03:30:12,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 03:30:12,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 03:30:12,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 03:30:12" (1/1) ... [2023-04-01 03:30:12,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb6180f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:12, skipping insertion in model container [2023-04-01 03:30:12,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 03:30:12" (1/1) ... [2023-04-01 03:30:12,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 03:30:13,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 03:30:14,198 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/Problem05_label14.c[377539,377552] [2023-04-01 03:30:14,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 03:30:14,219 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 03:30:14,742 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/Problem05_label14.c[377539,377552] [2023-04-01 03:30:14,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 03:30:14,838 INFO L208 MainTranslator]: Completed translation [2023-04-01 03:30:14,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:14 WrapperNode [2023-04-01 03:30:14,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 03:30:14,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 03:30:14,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 03:30:14,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 03:30:14,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:14" (1/1) ... [2023-04-01 03:30:14,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:14" (1/1) ... [2023-04-01 03:30:14,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:14" (1/1) ... [2023-04-01 03:30:14,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:14" (1/1) ... [2023-04-01 03:30:15,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:14" (1/1) ... [2023-04-01 03:30:15,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:14" (1/1) ... [2023-04-01 03:30:15,069 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:14" (1/1) ... [2023-04-01 03:30:15,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:14" (1/1) ... [2023-04-01 03:30:15,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 03:30:15,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 03:30:15,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 03:30:15,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 03:30:15,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:14" (1/1) ... [2023-04-01 03:30:15,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 03:30:15,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 03:30:15,158 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 03:30:15,175 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 03:30:15,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 03:30:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 03:30:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 03:30:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 03:30:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 03:30:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 03:30:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-01 03:30:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-01 03:30:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-01 03:30:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2023-04-01 03:30:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2023-04-01 03:30:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 03:30:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 03:30:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 03:30:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 03:30:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-01 03:30:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-01 03:30:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-01 03:30:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2023-04-01 03:30:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2023-04-01 03:30:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 03:30:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 03:30:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 03:30:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 03:30:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 03:30:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 03:30:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 03:30:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 03:30:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 03:30:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 03:30:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 03:30:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 03:30:15,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 03:30:15,335 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 03:30:15,337 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 03:30:20,449 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 03:30:21,718 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 03:30:21,718 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 03:30:21,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 03:30:21 BoogieIcfgContainer [2023-04-01 03:30:21,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 03:30:21,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 03:30:21,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 03:30:21,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 03:30:21,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 03:30:12" (1/3) ... [2023-04-01 03:30:21,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7edd8ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 03:30:21, skipping insertion in model container [2023-04-01 03:30:21,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:30:14" (2/3) ... [2023-04-01 03:30:21,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7edd8ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 03:30:21, skipping insertion in model container [2023-04-01 03:30:21,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 03:30:21" (3/3) ... [2023-04-01 03:30:21,728 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label14.c [2023-04-01 03:30:21,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 03:30:21,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 03:30:21,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 03:30:21,814 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;@2e6fecb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 03:30:21,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 03:30:21,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 1681 states, 1659 states have (on average 1.9825195901145267) internal successors, (3289), 1660 states have internal predecessors, (3289), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-01 03:30:21,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1652 [2023-04-01 03:30:21,887 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:30:21,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:21,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:30:21,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:30:21,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1963605401, now seen corresponding path program 1 times [2023-04-01 03:30:21,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:30:21,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565410135] [2023-04-01 03:30:21,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:30:21,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:30:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:30:28,271 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 03:30:28,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:30:28,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565410135] [2023-04-01 03:30:28,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565410135] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 03:30:28,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 03:30:28,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 03:30:28,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515132334] [2023-04-01 03:30:28,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 03:30:28,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 03:30:28,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 03:30:28,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 03:30:28,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 03:30:28,313 INFO L87 Difference]: Start difference. First operand has 1681 states, 1659 states have (on average 1.9825195901145267) internal successors, (3289), 1660 states have internal predecessors, (3289), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 546.6666666666666) internal successors, (1640), 2 states have internal predecessors, (1640), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 03:30:33,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 03:30:33,747 INFO L93 Difference]: Finished difference Result 5031 states and 9947 transitions. [2023-04-01 03:30:33,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 03:30:33,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 546.6666666666666) internal successors, (1640), 2 states have internal predecessors, (1640), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 1651 [2023-04-01 03:30:33,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 03:30:33,797 INFO L225 Difference]: With dead ends: 5031 [2023-04-01 03:30:33,797 INFO L226 Difference]: Without dead ends: 3347 [2023-04-01 03:30:33,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 03:30:33,810 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 268 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 4852 mSolverCounterSat, 2653 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 7505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2653 IncrementalHoareTripleChecker+Valid, 4852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-04-01 03:30:33,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 334 Invalid, 7505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2653 Valid, 4852 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-04-01 03:30:33,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2023-04-01 03:30:33,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3347. [2023-04-01 03:30:33,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3347 states, 3311 states have (on average 1.8991241316822711) internal successors, (6288), 3311 states have internal predecessors, (6288), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (33), 17 states have call predecessors, (33), 17 states have call successors, (33) [2023-04-01 03:30:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3347 states to 3347 states and 6339 transitions. [2023-04-01 03:30:33,955 INFO L78 Accepts]: Start accepts. Automaton has 3347 states and 6339 transitions. Word has length 1651 [2023-04-01 03:30:33,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 03:30:33,960 INFO L495 AbstractCegarLoop]: Abstraction has 3347 states and 6339 transitions. [2023-04-01 03:30:33,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 546.6666666666666) internal successors, (1640), 2 states have internal predecessors, (1640), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 03:30:33,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3347 states and 6339 transitions. [2023-04-01 03:30:34,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1665 [2023-04-01 03:30:34,070 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:30:34,071 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 03:30:34,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 03:30:34,072 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:30:34,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:30:34,073 INFO L85 PathProgramCache]: Analyzing trace with hash 885027873, now seen corresponding path program 1 times [2023-04-01 03:30:34,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:30:34,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196784904] [2023-04-01 03:30:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:30:34,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:30:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:30:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 03:30:36,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:30:36,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196784904] [2023-04-01 03:30:36,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196784904] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 03:30:36,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 03:30:36,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 03:30:36,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573145197] [2023-04-01 03:30:36,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 03:30:36,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 03:30:36,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 03:30:36,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 03:30:36,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 03:30:36,039 INFO L87 Difference]: Start difference. First operand 3347 states and 6339 transitions. Second operand has 5 states, 5 states have (on average 330.2) internal successors, (1651), 4 states have internal predecessors, (1651), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 03:30:42,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 03:30:42,484 INFO L93 Difference]: Finished difference Result 10218 states and 19343 transitions. [2023-04-01 03:30:42,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 03:30:42,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 330.2) internal successors, (1651), 4 states have internal predecessors, (1651), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 1664 [2023-04-01 03:30:42,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 03:30:42,512 INFO L225 Difference]: With dead ends: 10218 [2023-04-01 03:30:42,512 INFO L226 Difference]: Without dead ends: 6876 [2023-04-01 03:30:42,519 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 03:30:42,520 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 6959 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 8454 mSolverCounterSat, 3329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6959 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 11783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3329 IncrementalHoareTripleChecker+Valid, 8454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-04-01 03:30:42,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6959 Valid, 182 Invalid, 11783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3329 Valid, 8454 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-04-01 03:30:42,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6876 states. [2023-04-01 03:30:42,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6876 to 6839. [2023-04-01 03:30:42,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6839 states, 6718 states have (on average 1.6433462339982137) internal successors, (11040), 6725 states have internal predecessors, (11040), 34 states have call successors, (34), 34 states have call predecessors, (34), 86 states have return successors, (212), 79 states have call predecessors, (212), 33 states have call successors, (212) [2023-04-01 03:30:42,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6839 states to 6839 states and 11286 transitions. [2023-04-01 03:30:42,684 INFO L78 Accepts]: Start accepts. Automaton has 6839 states and 11286 transitions. Word has length 1664 [2023-04-01 03:30:42,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 03:30:42,684 INFO L495 AbstractCegarLoop]: Abstraction has 6839 states and 11286 transitions. [2023-04-01 03:30:42,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 330.2) internal successors, (1651), 4 states have internal predecessors, (1651), 3 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 03:30:42,685 INFO L276 IsEmpty]: Start isEmpty. Operand 6839 states and 11286 transitions. [2023-04-01 03:30:42,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1687 [2023-04-01 03:30:42,740 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:30:42,741 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 03:30:42,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 03:30:42,741 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:30:42,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:30:42,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1885178528, now seen corresponding path program 1 times [2023-04-01 03:30:42,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:30:42,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385240864] [2023-04-01 03:30:42,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:30:42,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:30:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:30:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 03:30:45,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:30:45,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385240864] [2023-04-01 03:30:45,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385240864] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 03:30:45,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137831155] [2023-04-01 03:30:45,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:30:45,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 03:30:45,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 03:30:45,378 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 03:30:45,381 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 03:30:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:30:45,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 03:30:45,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 03:30:46,032 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 03:30:46,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 03:30:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 03:30:46,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137831155] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 03:30:46,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [89507646] [2023-04-01 03:30:46,190 INFO L159 IcfgInterpreter]: Started Sifa with 1655 locations of interest [2023-04-01 03:30:46,190 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 03:30:46,195 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 03:30:46,199 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 03:30:46,199 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 03:30:46,357 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 56 for LOIs