/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/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem19_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:48:00,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:48:00,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:48:00,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-30 23:48:00,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-30 23:48:00,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-30 23:48:00,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-30 23:48:00,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-30 23:48:00,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-30 23:48:00,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-30 23:48:00,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-30 23:48:00,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-30 23:48:00,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-30 23:48:00,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-30 23:48:00,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-30 23:48:00,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-30 23:48:00,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-30 23:48:00,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-30 23:48:00,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-30 23:48:00,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-30 23:48:00,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-30 23:48:00,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-30 23:48:00,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-30 23:48:00,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-30 23:48:00,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-30 23:48:00,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-30 23:48:00,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-30 23:48:00,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-30 23:48:00,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-30 23:48:00,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-30 23:48:00,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-30 23:48:00,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-30 23:48:00,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-30 23:48:00,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-30 23:48:00,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-30 23:48:00,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-30 23:48:00,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-30 23:48:00,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-30 23:48:00,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 23:48:00,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 23:48:00,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 23:48:00,872 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-30 23:48:00,886 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:48:00,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:48:00,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:48:00,886 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:48:00,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:48:00,887 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:48:00,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:48:00,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:48:00,888 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:48:00,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:48:00,888 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:48:00,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:48:00,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:48:00,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:48:00,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:48:00,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:48:00,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:48:00,888 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:48:00,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:48:00,889 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:48:00,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:48:00,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:48:00,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:48:00,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:48:00,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:48:00,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:48:00,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:48:00,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:48:00,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:48:00,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:48:00,890 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:48:00,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:48:00,890 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:48:00,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:48:00,890 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:48:00,890 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:48:01,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:48:01,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:48:01,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:48:01,082 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:48:01,083 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:48:01,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label10.c [2023-03-30 23:48:02,152 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:48:02,588 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:48:02,588 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label10.c [2023-03-30 23:48:02,626 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc9522af9/a8618c42f3574582bc424002a23d77d1/FLAGd9ecbde4a [2023-03-30 23:48:02,640 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc9522af9/a8618c42f3574582bc424002a23d77d1 [2023-03-30 23:48:02,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:48:02,643 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:48:02,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:48:02,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:48:02,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:48:02,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:48:02" (1/1) ... [2023-03-30 23:48:02,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f0b752e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:02, skipping insertion in model container [2023-03-30 23:48:02,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:48:02" (1/1) ... [2023-03-30 23:48:02,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:48:02,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:48:02,988 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/Problem19_label10.c[1448,1461] [2023-03-30 23:48:03,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:48:03,850 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:48:03,864 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/Problem19_label10.c[1448,1461] [2023-03-30 23:48:04,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:48:04,433 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:48:04,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:04 WrapperNode [2023-03-30 23:48:04,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:48:04,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:48:04,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:48:04,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:48:04,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:04" (1/1) ... [2023-03-30 23:48:04,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:04" (1/1) ... [2023-03-30 23:48:04,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:04" (1/1) ... [2023-03-30 23:48:04,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:04" (1/1) ... [2023-03-30 23:48:04,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:04" (1/1) ... [2023-03-30 23:48:04,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:04" (1/1) ... [2023-03-30 23:48:04,797 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:04" (1/1) ... [2023-03-30 23:48:04,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:04" (1/1) ... [2023-03-30 23:48:04,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:48:04,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:48:04,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:48:04,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:48:04,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:04" (1/1) ... [2023-03-30 23:48:04,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:48:04,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:48:04,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-30 23:48:04,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-30 23:48:04,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:48:04,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:48:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:48:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:48:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 23:48:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-03-30 23:48:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2023-03-30 23:48:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2023-03-30 23:48:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2023-03-30 23:48:04,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:48:04,946 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:48:04,946 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 23:48:04,946 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-03-30 23:48:04,946 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2023-03-30 23:48:04,947 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2023-03-30 23:48:04,947 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2023-03-30 23:48:04,947 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:48:04,947 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:48:04,947 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:48:04,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:48:04,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:48:04,947 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:48:04,947 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:48:04,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:48:04,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:48:04,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:48:04,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:48:04,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:48:04,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:48:05,020 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:48:05,022 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:48:10,650 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:48:10,664 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:48:10,664 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:48:10,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:48:10 BoogieIcfgContainer [2023-03-30 23:48:10,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:48:10,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:48:10,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:48:10,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:48:10,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:48:02" (1/3) ... [2023-03-30 23:48:10,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1312d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:48:10, skipping insertion in model container [2023-03-30 23:48:10,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:48:04" (2/3) ... [2023-03-30 23:48:10,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1312d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:48:10, skipping insertion in model container [2023-03-30 23:48:10,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:48:10" (3/3) ... [2023-03-30 23:48:10,672 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label10.c [2023-03-30 23:48:10,684 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:48:10,684 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:48:10,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:48:10,750 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=PETRI_NET, 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;@19af7d2d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:48:10,750 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:48:10,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-03-30 23:48:10,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-03-30 23:48:10,764 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:48:10,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:48:10,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:48:10,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:48:10,770 INFO L85 PathProgramCache]: Analyzing trace with hash 80653160, now seen corresponding path program 1 times [2023-03-30 23:48:10,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:48:10,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292260781] [2023-03-30 23:48:10,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:48:10,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:48:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:11,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:48:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:11,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:48:11,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:48:11,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292260781] [2023-03-30 23:48:11,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292260781] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:48:11,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:48:11,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-30 23:48:11,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869983571] [2023-03-30 23:48:11,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:48:11,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:48:11,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:48:11,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:48:11,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 23:48:11,101 INFO L87 Difference]: Start difference. First operand has 1777 states, 1759 states have (on average 1.8635588402501422) internal successors, (3278), 1760 states have internal predecessors, (3278), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:48:20,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:48:20,629 INFO L93 Difference]: Finished difference Result 5076 states and 9543 transitions. [2023-03-30 23:48:20,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 23:48:20,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-03-30 23:48:20,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:48:20,657 INFO L225 Difference]: With dead ends: 5076 [2023-03-30 23:48:20,657 INFO L226 Difference]: Without dead ends: 3219 [2023-03-30 23:48:20,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-30 23:48:20,670 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 4681 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 7327 mSolverCounterSat, 1544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4681 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 8871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1544 IncrementalHoareTripleChecker+Valid, 7327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:48:20,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4681 Valid, 384 Invalid, 8871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1544 Valid, 7327 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-03-30 23:48:20,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2023-03-30 23:48:20,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3194. [2023-03-30 23:48:20,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 3154 states have (on average 1.592263792010146) internal successors, (5022), 3156 states have internal predecessors, (5022), 14 states have call successors, (14), 14 states have call predecessors, (14), 25 states have return successors, (37), 23 states have call predecessors, (37), 13 states have call successors, (37) [2023-03-30 23:48:20,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 5073 transitions. [2023-03-30 23:48:20,811 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 5073 transitions. Word has length 13 [2023-03-30 23:48:20,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:48:20,812 INFO L495 AbstractCegarLoop]: Abstraction has 3194 states and 5073 transitions. [2023-03-30 23:48:20,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:48:20,813 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 5073 transitions. [2023-03-30 23:48:20,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-03-30 23:48:20,816 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:48:20,816 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-30 23:48:20,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:48:20,816 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:48:20,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:48:20,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2101526240, now seen corresponding path program 1 times [2023-03-30 23:48:20,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:48:20,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348291171] [2023-03-30 23:48:20,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:48:20,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:48:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:20,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:48:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:21,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:48:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:48:21,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:48:21,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348291171] [2023-03-30 23:48:21,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348291171] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:48:21,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:48:21,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:48:21,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382274354] [2023-03-30 23:48:21,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:48:21,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:48:21,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:48:21,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:48:21,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:48:21,064 INFO L87 Difference]: Start difference. First operand 3194 states and 5073 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:48:45,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:48:45,521 INFO L93 Difference]: Finished difference Result 20617 states and 33713 transitions. [2023-03-30 23:48:45,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-30 23:48:45,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 84 [2023-03-30 23:48:45,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:48:45,579 INFO L225 Difference]: With dead ends: 20617 [2023-03-30 23:48:45,579 INFO L226 Difference]: Without dead ends: 17429 [2023-03-30 23:48:45,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-03-30 23:48:45,588 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 11623 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 28036 mSolverCounterSat, 3775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11623 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 31811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3775 IncrementalHoareTripleChecker+Valid, 28036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:48:45,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11623 Valid, 1043 Invalid, 31811 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3775 Valid, 28036 Invalid, 0 Unknown, 0 Unchecked, 23.6s Time] [2023-03-30 23:48:45,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17429 states. [2023-03-30 23:48:45,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17429 to 17373. [2023-03-30 23:48:45,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17373 states, 17154 states have (on average 1.3166025416812406) internal successors, (22585), 17166 states have internal predecessors, (22585), 74 states have call successors, (74), 74 states have call predecessors, (74), 144 states have return successors, (810), 132 states have call predecessors, (810), 73 states have call successors, (810) [2023-03-30 23:48:45,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17373 states to 17373 states and 23469 transitions. [2023-03-30 23:48:45,937 INFO L78 Accepts]: Start accepts. Automaton has 17373 states and 23469 transitions. Word has length 84 [2023-03-30 23:48:45,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:48:45,938 INFO L495 AbstractCegarLoop]: Abstraction has 17373 states and 23469 transitions. [2023-03-30 23:48:45,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:48:45,938 INFO L276 IsEmpty]: Start isEmpty. Operand 17373 states and 23469 transitions. [2023-03-30 23:48:45,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-03-30 23:48:45,943 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:48:45,943 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-30 23:48:45,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:48:45,943 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:48:45,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:48:45,944 INFO L85 PathProgramCache]: Analyzing trace with hash -189937864, now seen corresponding path program 1 times [2023-03-30 23:48:45,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:48:45,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149299213] [2023-03-30 23:48:45,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:48:45,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:48:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:46,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:48:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:46,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:48:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:46,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:48:46,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:48:46,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149299213] [2023-03-30 23:48:46,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149299213] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:48:46,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:48:46,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:48:46,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500797691] [2023-03-30 23:48:46,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:48:46,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:48:46,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:48:46,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:48:46,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:48:46,376 INFO L87 Difference]: Start difference. First operand 17373 states and 23469 transitions. Second operand has 7 states, 6 states have (on average 18.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:48:57,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:48:57,420 INFO L93 Difference]: Finished difference Result 51229 states and 72277 transitions. [2023-03-30 23:48:57,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-30 23:48:57,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 114 [2023-03-30 23:48:57,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:48:57,518 INFO L225 Difference]: With dead ends: 51229 [2023-03-30 23:48:57,518 INFO L226 Difference]: Without dead ends: 33862 [2023-03-30 23:48:57,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:48:57,555 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 8899 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 10631 mSolverCounterSat, 2137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8899 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 12768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2137 IncrementalHoareTripleChecker+Valid, 10631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-03-30 23:48:57,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8899 Valid, 1102 Invalid, 12768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2137 Valid, 10631 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-03-30 23:48:57,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33862 states. [2023-03-30 23:48:58,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33862 to 33708. [2023-03-30 23:48:58,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33708 states, 33057 states have (on average 1.2129352330822518) internal successors, (40096), 33128 states have internal predecessors, (40096), 140 states have call successors, (140), 140 states have call predecessors, (140), 510 states have return successors, (3490), 439 states have call predecessors, (3490), 139 states have call successors, (3490) [2023-03-30 23:48:58,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33708 states to 33708 states and 43726 transitions. [2023-03-30 23:48:58,193 INFO L78 Accepts]: Start accepts. Automaton has 33708 states and 43726 transitions. Word has length 114 [2023-03-30 23:48:58,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:48:58,194 INFO L495 AbstractCegarLoop]: Abstraction has 33708 states and 43726 transitions. [2023-03-30 23:48:58,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:48:58,195 INFO L276 IsEmpty]: Start isEmpty. Operand 33708 states and 43726 transitions. [2023-03-30 23:48:58,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-03-30 23:48:58,201 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:48:58,202 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2023-03-30 23:48:58,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-30 23:48:58,202 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:48:58,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:48:58,203 INFO L85 PathProgramCache]: Analyzing trace with hash 200453502, now seen corresponding path program 1 times [2023-03-30 23:48:58,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:48:58,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613423539] [2023-03-30 23:48:58,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:48:58,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:48:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:58,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:48:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:58,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:48:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:58,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-03-30 23:48:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 12 proven. 73 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-03-30 23:48:58,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:48:58,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613423539] [2023-03-30 23:48:58,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613423539] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:48:58,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361876971] [2023-03-30 23:48:58,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:48:58,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:48:58,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:48:58,564 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:48:58,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:48:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:48:58,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-30 23:48:58,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:48:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-03-30 23:48:58,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:48:58,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361876971] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:48:58,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:48:58,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-03-30 23:48:58,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334624878] [2023-03-30 23:48:58,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:48:58,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-30 23:48:58,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:48:58,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-30 23:48:58,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-03-30 23:48:58,857 INFO L87 Difference]: Start difference. First operand 33708 states and 43726 transitions. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 4 states have internal predecessors, (195), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)