/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_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 17:25:27,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 17:25:27,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 17:25:27,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 17:25:27,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 17:25:27,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 17:25:27,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 17:25:27,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 17:25:27,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 17:25:27,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 17:25:27,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 17:25:27,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 17:25:27,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 17:25:27,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 17:25:27,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 17:25:27,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 17:25:27,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 17:25:27,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 17:25:27,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 17:25:27,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 17:25:27,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 17:25:27,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 17:25:27,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 17:25:27,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 17:25:27,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 17:25:27,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 17:25:27,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 17:25:27,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 17:25:27,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 17:25:27,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 17:25:27,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 17:25:27,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 17:25:27,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 17:25:27,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 17:25:27,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 17:25:27,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 17:25:27,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 17:25:27,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 17:25:27,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 17:25:27,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 17:25:27,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 17:25:27,124 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 [2023-04-02 17:25:27,144 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 17:25:27,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 17:25:27,144 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 17:25:27,144 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 17:25:27,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 17:25:27,146 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 17:25:27,147 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 17:25:27,147 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 17:25:27,147 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 17:25:27,147 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 17:25:27,147 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 17:25:27,148 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 17:25:27,148 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 17:25:27,148 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 17:25:27,148 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 17:25:27,148 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 17:25:27,148 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 17:25:27,148 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 17:25:27,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 17:25:27,149 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 17:25:27,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 17:25:27,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 17:25:27,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 17:25:27,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 17:25:27,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 17:25:27,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 17:25:27,149 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 17:25:27,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 17:25:27,150 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 17:25:27,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 17:25:27,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 17:25:27,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 17:25:27,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 17:25:27,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 17:25:27,150 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 17:25:27,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 17:25:27,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 17:25:27,150 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 17:25:27,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 17:25:27,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 17:25:27,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 17:25:27,151 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 17:25:27,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 17:25:27,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 17:25:27,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 17:25:27,342 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 17:25:27,342 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 17:25:27,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem05_label58.c [2023-04-02 17:25:28,266 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 17:25:28,722 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 17:25:28,723 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem05_label58.c [2023-04-02 17:25:28,765 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8f472c4d/b23fd674a9314b0d9f84062707f11747/FLAGc51db9408 [2023-04-02 17:25:28,778 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8f472c4d/b23fd674a9314b0d9f84062707f11747 [2023-04-02 17:25:28,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 17:25:28,782 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 17:25:28,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 17:25:28,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 17:25:28,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 17:25:28,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:25:28" (1/1) ... [2023-04-02 17:25:28,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd8786d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:28, skipping insertion in model container [2023-04-02 17:25:28,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:25:28" (1/1) ... [2023-04-02 17:25:28,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 17:25:28,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 17:25:30,226 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_label58.c[374686,374699] [2023-04-02 17:25:30,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 17:25:30,252 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 17:25:30,843 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_label58.c[374686,374699] [2023-04-02 17:25:30,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 17:25:30,881 INFO L208 MainTranslator]: Completed translation [2023-04-02 17:25:30,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:30 WrapperNode [2023-04-02 17:25:30,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 17:25:30,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 17:25:30,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 17:25:30,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 17:25:30,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:30" (1/1) ... [2023-04-02 17:25:30,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:30" (1/1) ... [2023-04-02 17:25:30,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:30" (1/1) ... [2023-04-02 17:25:30,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:30" (1/1) ... [2023-04-02 17:25:31,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:30" (1/1) ... [2023-04-02 17:25:31,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:30" (1/1) ... [2023-04-02 17:25:31,126 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:30" (1/1) ... [2023-04-02 17:25:31,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:30" (1/1) ... [2023-04-02 17:25:31,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 17:25:31,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 17:25:31,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 17:25:31,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 17:25:31,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:30" (1/1) ... [2023-04-02 17:25:31,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 17:25:31,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 17:25:31,234 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) [2023-04-02 17:25:31,236 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 [2023-04-02 17:25:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 17:25:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 17:25:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 17:25:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-02 17:25:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-02 17:25:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-02 17:25:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-04-02 17:25:31,260 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-04-02 17:25:31,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-04-02 17:25:31,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2023-04-02 17:25:31,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2023-04-02 17:25:31,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 17:25:31,261 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-02 17:25:31,261 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-02 17:25:31,261 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-02 17:25:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-04-02 17:25:31,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-04-02 17:25:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-04-02 17:25:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2023-04-02 17:25:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2023-04-02 17:25:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 17:25:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 17:25:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 17:25:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 17:25:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 17:25:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 17:25:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 17:25:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 17:25:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 17:25:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 17:25:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 17:25:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 17:25:31,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 17:25:31,346 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 17:25:31,348 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 17:25:36,304 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 17:25:37,266 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 17:25:37,266 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 17:25:37,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:25:37 BoogieIcfgContainer [2023-04-02 17:25:37,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 17:25:37,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 17:25:37,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 17:25:37,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 17:25:37,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:25:28" (1/3) ... [2023-04-02 17:25:37,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379a43ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:25:37, skipping insertion in model container [2023-04-02 17:25:37,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:25:30" (2/3) ... [2023-04-02 17:25:37,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379a43ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:25:37, skipping insertion in model container [2023-04-02 17:25:37,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:25:37" (3/3) ... [2023-04-02 17:25:37,279 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label58.c [2023-04-02 17:25:37,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 17:25:37,292 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 17:25:37,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 17:25:37,364 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;@58561b70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 17:25:37,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 17:25:37,371 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) [2023-04-02 17:25:37,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1652 [2023-04-02 17:25:37,415 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 17:25:37,417 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] [2023-04-02 17:25:37,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 17:25:37,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 17:25:37,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1963493354, now seen corresponding path program 1 times [2023-04-02 17:25:37,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 17:25:37,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108755054] [2023-04-02 17:25:37,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 17:25:37,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 17:25:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 17:25:44,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 17:25:44,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 17:25:44,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108755054] [2023-04-02 17:25:44,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108755054] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 17:25:44,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 17:25:44,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 17:25:44,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684396405] [2023-04-02 17:25:44,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 17:25:44,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 17:25:44,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 17:25:44,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 17:25:44,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 17:25:44,082 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) [2023-04-02 17:25:49,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 17:25:49,209 INFO L93 Difference]: Finished difference Result 5031 states and 9947 transitions. [2023-04-02 17:25:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 17:25:49,212 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 [2023-04-02 17:25:49,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 17:25:49,248 INFO L225 Difference]: With dead ends: 5031 [2023-04-02 17:25:49,248 INFO L226 Difference]: Without dead ends: 3347 [2023-04-02 17:25:49,256 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 [2023-04-02 17:25:49,259 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 272 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 4905 mSolverCounterSat, 2618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 7523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2618 IncrementalHoareTripleChecker+Valid, 4905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-04-02 17:25:49,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 294 Invalid, 7523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2618 Valid, 4905 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-04-02 17:25:49,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2023-04-02 17:25:49,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3347. [2023-04-02 17:25:49,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3347 states, 3311 states have (on average 1.9154334038054968) internal successors, (6342), 3311 states have internal predecessors, (6342), 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) [2023-04-02 17:25:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3347 states to 3347 states and 6393 transitions. [2023-04-02 17:25:49,397 INFO L78 Accepts]: Start accepts. Automaton has 3347 states and 6393 transitions. Word has length 1651 [2023-04-02 17:25:49,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 17:25:49,400 INFO L495 AbstractCegarLoop]: Abstraction has 3347 states and 6393 transitions. [2023-04-02 17:25:49,402 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) [2023-04-02 17:25:49,402 INFO L276 IsEmpty]: Start isEmpty. Operand 3347 states and 6393 transitions. [2023-04-02 17:25:49,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1674 [2023-04-02 17:25:49,454 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 17:25:49,455 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 17:25:49,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 17:25:49,455 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 17:25:49,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 17:25:49,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1889375157, now seen corresponding path program 1 times [2023-04-02 17:25:49,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 17:25:49,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73169081] [2023-04-02 17:25:49,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 17:25:49,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 17:25:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 17:25:54,354 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 17:25:54,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 17:25:54,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73169081] [2023-04-02 17:25:54,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73169081] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 17:25:54,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266477163] [2023-04-02 17:25:54,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 17:25:54,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 17:25:54,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 17:25:54,377 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) [2023-04-02 17:25:54,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 17:25:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 17:25:54,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 2097 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-02 17:25:54,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 17:25:56,625 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 17:25:56,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 17:25:56,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266477163] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 17:25:56,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 17:25:56,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-04-02 17:25:56,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656328003] [2023-04-02 17:25:56,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 17:25:56,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 17:25:56,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 17:25:56,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 17:25:56,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 17:25:56,631 INFO L87 Difference]: Start difference. First operand 3347 states and 6393 transitions. Second operand has 3 states, 3 states have (on average 553.3333333333334) internal successors, (1660), 3 states have internal predecessors, (1660), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 17:26:01,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 17:26:01,058 INFO L93 Difference]: Finished difference Result 10029 states and 19261 transitions. [2023-04-02 17:26:01,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 17:26:01,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 553.3333333333334) internal successors, (1660), 3 states have internal predecessors, (1660), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1673 [2023-04-02 17:26:01,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 17:26:01,082 INFO L225 Difference]: With dead ends: 10029 [2023-04-02 17:26:01,082 INFO L226 Difference]: Without dead ends: 6687 [2023-04-02 17:26:01,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1687 GetRequests, 1682 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 17:26:01,089 INFO L413 NwaCegarLoop]: 3031 mSDtfsCounter, 162 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 6539 mSolverCounterSat, 841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 3086 SdHoareTripleChecker+Invalid, 7380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 6539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-04-02 17:26:01,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 3086 Invalid, 7380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [841 Valid, 6539 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-04-02 17:26:01,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6687 states. [2023-04-02 17:26:01,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6687 to 6687. [2023-04-02 17:26:01,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6687 states, 6619 states have (on average 1.7135518960568061) internal successors, (11342), 6619 states have internal predecessors, (11342), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (126), 33 states have call predecessors, (126), 33 states have call successors, (126) [2023-04-02 17:26:01,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6687 states to 6687 states and 11502 transitions. [2023-04-02 17:26:01,215 INFO L78 Accepts]: Start accepts. Automaton has 6687 states and 11502 transitions. Word has length 1673 [2023-04-02 17:26:01,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 17:26:01,218 INFO L495 AbstractCegarLoop]: Abstraction has 6687 states and 11502 transitions. [2023-04-02 17:26:01,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 553.3333333333334) internal successors, (1660), 3 states have internal predecessors, (1660), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 17:26:01,219 INFO L276 IsEmpty]: Start isEmpty. Operand 6687 states and 11502 transitions. [2023-04-02 17:26:01,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1694 [2023-04-02 17:26:01,248 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 17:26:01,249 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 17:26:01,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 17:26:01,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 17:26:01,456 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 17:26:01,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 17:26:01,457 INFO L85 PathProgramCache]: Analyzing trace with hash -72984459, now seen corresponding path program 1 times [2023-04-02 17:26:01,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 17:26:01,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678599743] [2023-04-02 17:26:01,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 17:26:01,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 17:26:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 17:26:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 17:26:02,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 17:26:02,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678599743] [2023-04-02 17:26:02,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678599743] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 17:26:02,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 17:26:02,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 17:26:02,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147868148] [2023-04-02 17:26:02,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 17:26:02,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 17:26:02,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 17:26:02,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 17:26:02,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 17:26:02,837 INFO L87 Difference]: Start difference. First operand 6687 states and 11502 transitions. Second operand has 5 states, 5 states have (on average 336.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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) [2023-04-02 17:26:08,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 17:26:08,482 INFO L93 Difference]: Finished difference Result 16970 states and 29863 transitions. [2023-04-02 17:26:08,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 17:26:08,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 336.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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 1693 [2023-04-02 17:26:08,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 17:26:08,521 INFO L225 Difference]: With dead ends: 16970 [2023-04-02 17:26:08,521 INFO L226 Difference]: Without dead ends: 10288 [2023-04-02 17:26:08,535 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 [2023-04-02 17:26:08,535 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 6901 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 8454 mSolverCounterSat, 3329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6901 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 11783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3329 IncrementalHoareTripleChecker+Valid, 8454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-04-02 17:26:08,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6901 Valid, 186 Invalid, 11783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3329 Valid, 8454 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-04-02 17:26:08,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10288 states. [2023-04-02 17:26:08,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10288 to 10243. [2023-04-02 17:26:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10243 states, 10067 states have (on average 1.6057415317373598) internal successors, (16165), 10079 states have internal predecessors, (16165), 50 states have call successors, (50), 50 states have call predecessors, (50), 125 states have return successors, (363), 113 states have call predecessors, (363), 49 states have call successors, (363) [2023-04-02 17:26:08,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10243 states to 10243 states and 16578 transitions. [2023-04-02 17:26:08,825 INFO L78 Accepts]: Start accepts. Automaton has 10243 states and 16578 transitions. Word has length 1693 [2023-04-02 17:26:08,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 17:26:08,825 INFO L495 AbstractCegarLoop]: Abstraction has 10243 states and 16578 transitions. [2023-04-02 17:26:08,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 336.0) internal successors, (1680), 4 states have internal predecessors, (1680), 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) [2023-04-02 17:26:08,827 INFO L276 IsEmpty]: Start isEmpty. Operand 10243 states and 16578 transitions. [2023-04-02 17:26:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1716 [2023-04-02 17:26:08,856 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 17:26:08,857 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 17:26:08,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 17:26:08,857 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 17:26:08,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 17:26:08,859 INFO L85 PathProgramCache]: Analyzing trace with hash 992883606, now seen corresponding path program 1 times [2023-04-02 17:26:08,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 17:26:08,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340650406] [2023-04-02 17:26:08,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 17:26:08,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 17:26:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 17:26:10,971 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 59 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 17:26:10,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 17:26:10,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340650406] [2023-04-02 17:26:10,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340650406] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 17:26:10,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556460291] [2023-04-02 17:26:10,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 17:26:10,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 17:26:10,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 17:26:10,975 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) [2023-04-02 17:26:10,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 17:26:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 17:26:11,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 2196 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-02 17:26:11,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 17:26:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 17:26:11,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 17:26:11,721 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 17:26:11,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556460291] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 17:26:11,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [450608969] [2023-04-02 17:26:11,759 INFO L159 IcfgInterpreter]: Started Sifa with 1655 locations of interest [2023-04-02 17:26:11,760 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 17:26:11,765 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 17:26:11,768 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 17:26:11,769 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 17:26:11,911 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 56 for LOIs [2023-04-02 17:27:57,014 WARN L223 SmtUtils]: Spent 1.66m on a formula simplification that was a NOOP. DAG size: 3177 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)