/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/Problem01_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 03:11:04,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 03:11:04,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 03:11:04,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 03:11:04,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 03:11:04,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 03:11:04,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 03:11:04,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 03:11:04,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 03:11:04,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 03:11:04,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 03:11:04,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 03:11:04,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 03:11:04,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 03:11:04,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 03:11:04,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 03:11:04,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 03:11:04,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 03:11:04,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 03:11:04,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 03:11:04,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 03:11:04,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 03:11:04,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 03:11:04,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 03:11:04,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 03:11:04,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 03:11:04,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 03:11:04,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 03:11:04,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 03:11:04,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 03:11:04,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 03:11:04,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 03:11:04,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 03:11:04,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 03:11:04,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 03:11:04,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 03:11:04,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 03:11:04,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 03:11:04,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 03:11:04,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 03:11:04,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 03:11:04,733 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 03:11:04,773 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 03:11:04,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 03:11:04,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 03:11:04,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 03:11:04,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 03:11:04,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 03:11:04,776 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 03:11:04,776 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 03:11:04,776 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 03:11:04,776 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 03:11:04,777 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 03:11:04,777 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 03:11:04,777 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 03:11:04,777 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 03:11:04,777 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 03:11:04,778 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 03:11:04,778 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 03:11:04,778 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 03:11:04,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 03:11:04,778 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 03:11:04,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 03:11:04,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 03:11:04,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 03:11:04,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 03:11:04,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 03:11:04,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 03:11:04,779 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 03:11:04,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 03:11:04,779 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 03:11:04,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 03:11:04,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 03:11:04,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 03:11:04,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 03:11:04,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 03:11:04,780 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 03:11:04,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 03:11:04,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 03:11:04,780 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 03:11:04,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 03:11:04,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 03:11:04,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 03:11:04,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 03:11:04,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 03:11:05,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 03:11:05,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 03:11:05,017 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 03:11:05,017 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 03:11:05,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem01_label16.c [2023-04-01 03:11:06,050 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 03:11:06,293 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 03:11:06,293 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label16.c [2023-04-01 03:11:06,315 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/188e04ce7/cba708189f894f1c8afac5935376d85a/FLAG2c98f4b22 [2023-04-01 03:11:06,325 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/188e04ce7/cba708189f894f1c8afac5935376d85a [2023-04-01 03:11:06,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 03:11:06,328 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 03:11:06,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 03:11:06,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 03:11:06,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 03:11:06,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 03:11:06" (1/1) ... [2023-04-01 03:11:06,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40dd7d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:11:06, skipping insertion in model container [2023-04-01 03:11:06,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 03:11:06" (1/1) ... [2023-04-01 03:11:06,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 03:11:06,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 03:11:06,587 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/Problem01_label16.c[21710,21723] [2023-04-01 03:11:06,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 03:11:06,622 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 03:11:06,687 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/Problem01_label16.c[21710,21723] [2023-04-01 03:11:06,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 03:11:06,702 INFO L208 MainTranslator]: Completed translation [2023-04-01 03:11:06,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:11:06 WrapperNode [2023-04-01 03:11:06,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 03:11:06,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 03:11:06,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 03:11:06,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 03:11:06,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:11:06" (1/1) ... [2023-04-01 03:11:06,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:11:06" (1/1) ... [2023-04-01 03:11:06,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:11:06" (1/1) ... [2023-04-01 03:11:06,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:11:06" (1/1) ... [2023-04-01 03:11:06,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:11:06" (1/1) ... [2023-04-01 03:11:06,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:11:06" (1/1) ... [2023-04-01 03:11:06,797 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:11:06" (1/1) ... [2023-04-01 03:11:06,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:11:06" (1/1) ... [2023-04-01 03:11:06,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 03:11:06,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 03:11:06,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 03:11:06,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 03:11:06,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:11:06" (1/1) ... [2023-04-01 03:11:06,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 03:11:06,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 03:11:06,831 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 03:11:06,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 03:11:06,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 03:11:06,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 03:11:06,868 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 03:11:06,869 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 03:11:06,869 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 03:11:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 03:11:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 03:11:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 03:11:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 03:11:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 03:11:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 03:11:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 03:11:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 03:11:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 03:11:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 03:11:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 03:11:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 03:11:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 03:11:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 03:11:06,963 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 03:11:06,969 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 03:11:07,645 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 03:11:07,813 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 03:11:07,814 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 03:11:07,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 03:11:07 BoogieIcfgContainer [2023-04-01 03:11:07,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 03:11:07,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 03:11:07,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 03:11:07,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 03:11:07,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 03:11:06" (1/3) ... [2023-04-01 03:11:07,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28564d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 03:11:07, skipping insertion in model container [2023-04-01 03:11:07,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 03:11:06" (2/3) ... [2023-04-01 03:11:07,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28564d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 03:11:07, skipping insertion in model container [2023-04-01 03:11:07,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 03:11:07" (3/3) ... [2023-04-01 03:11:07,825 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label16.c [2023-04-01 03:11:07,839 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 03:11:07,839 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 03:11:07,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 03:11:07,891 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;@6e90c495, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 03:11:07,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 03:11:07,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 78 states have (on average 1.8974358974358974) internal successors, (148), 79 states have internal predecessors, (148), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 03:11:07,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-01 03:11:07,905 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:11:07,905 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] [2023-04-01 03:11:07,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:11:07,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:11:07,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1124022147, now seen corresponding path program 1 times [2023-04-01 03:11:07,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:11:07,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495833379] [2023-04-01 03:11:07,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:11:07,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:11:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:11:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 03:11:08,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:11:08,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495833379] [2023-04-01 03:11:08,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495833379] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 03:11:08,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 03:11:08,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 03:11:08,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424839749] [2023-04-01 03:11:08,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 03:11:08,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 03:11:08,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 03:11:08,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 03:11:08,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 03:11:08,545 INFO L87 Difference]: Start difference. First operand has 86 states, 78 states have (on average 1.8974358974358974) internal successors, (148), 79 states have internal predecessors, (148), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 03:11:08,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 03:11:08,899 INFO L93 Difference]: Finished difference Result 246 states and 454 transitions. [2023-04-01 03:11:08,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 03:11:08,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 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 77 [2023-04-01 03:11:08,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 03:11:08,914 INFO L225 Difference]: With dead ends: 246 [2023-04-01 03:11:08,914 INFO L226 Difference]: Without dead ends: 157 [2023-04-01 03:11:08,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 03:11:08,922 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 03:11:08,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 30 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 03:11:08,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-04-01 03:11:08,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-04-01 03:11:08,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 149 states have (on average 1.8926174496644295) internal successors, (282), 149 states have internal predecessors, (282), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 03:11:08,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 291 transitions. [2023-04-01 03:11:08,970 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 291 transitions. Word has length 77 [2023-04-01 03:11:08,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 03:11:08,970 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 291 transitions. [2023-04-01 03:11:08,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 03:11:08,971 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 291 transitions. [2023-04-01 03:11:08,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-01 03:11:08,973 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:11:08,973 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 03:11:08,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 03:11:08,974 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:11:08,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:11:08,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1608705531, now seen corresponding path program 1 times [2023-04-01 03:11:08,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:11:08,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373811125] [2023-04-01 03:11:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:11:08,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:11:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:11:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 03:11:09,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:11:09,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373811125] [2023-04-01 03:11:09,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373811125] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 03:11:09,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 03:11:09,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 03:11:09,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007264017] [2023-04-01 03:11:09,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 03:11:09,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 03:11:09,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 03:11:09,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 03:11:09,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 03:11:09,350 INFO L87 Difference]: Start difference. First operand 157 states and 291 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 03:11:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 03:11:09,717 INFO L93 Difference]: Finished difference Result 477 states and 896 transitions. [2023-04-01 03:11:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 03:11:09,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 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 94 [2023-04-01 03:11:09,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 03:11:09,723 INFO L225 Difference]: With dead ends: 477 [2023-04-01 03:11:09,724 INFO L226 Difference]: Without dead ends: 325 [2023-04-01 03:11:09,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 03:11:09,731 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 251 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 03:11:09,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 49 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 03:11:09,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-04-01 03:11:09,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 317. [2023-04-01 03:11:09,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 300 states have (on average 1.6033333333333333) internal successors, (481), 305 states have internal predecessors, (481), 6 states have call successors, (6), 6 states have call predecessors, (6), 10 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-01 03:11:09,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 507 transitions. [2023-04-01 03:11:09,766 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 507 transitions. Word has length 94 [2023-04-01 03:11:09,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 03:11:09,771 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 507 transitions. [2023-04-01 03:11:09,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 03:11:09,772 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 507 transitions. [2023-04-01 03:11:09,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-04-01 03:11:09,778 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 03:11:09,778 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-04-01 03:11:09,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 03:11:09,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 03:11:09,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 03:11:09,779 INFO L85 PathProgramCache]: Analyzing trace with hash -688637509, now seen corresponding path program 1 times [2023-04-01 03:11:09,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 03:11:09,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739956167] [2023-04-01 03:11:09,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:11:09,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 03:11:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:11:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 03:11:10,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 03:11:10,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739956167] [2023-04-01 03:11:10,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739956167] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 03:11:10,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233404323] [2023-04-01 03:11:10,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 03:11:10,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 03:11:10,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 03:11:10,039 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 03:11:10,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 03:11:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 03:11:10,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 03:11:10,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 03:11:10,271 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-01 03:11:10,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 03:11:10,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233404323] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 03:11:10,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 03:11:10,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 03:11:10,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762664865] [2023-04-01 03:11:10,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 03:11:10,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 03:11:10,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 03:11:10,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 03:11:10,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 03:11:10,273 INFO L87 Difference]: Start difference. First operand 317 states and 507 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 03:11:10,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 03:11:10,614 INFO L93 Difference]: Finished difference Result 809 states and 1362 transitions. [2023-04-01 03:11:10,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 03:11:10,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 107 [2023-04-01 03:11:10,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 03:11:10,615 INFO L225 Difference]: With dead ends: 809 [2023-04-01 03:11:10,616 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 03:11:10,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-01 03:11:10,620 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 231 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 03:11:10,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 35 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 03:11:10,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 03:11:10,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 03:11:10,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 03:11:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 03:11:10,623 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 107 [2023-04-01 03:11:10,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 03:11:10,623 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 03:11:10,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 03:11:10,623 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 03:11:10,624 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 03:11:10,626 INFO L805 garLoopResultBuilder]: Registering result SAFE for location calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 03:11:10,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 03:11:10,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 03:11:10,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-01 03:11:10,958 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2023-04-01 03:11:10,959 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 12) no Hoare annotation was computed. [2023-04-01 03:11:10,959 INFO L895 garLoopResultBuilder]: At program point L601(line 601) the Hoare annotation is: (or (not (= |old(~a21~0)| 1)) (<= ~a16~0 5) (not (= 14 ~a8~0)) (= 14 |old(~a8~0)|) (not (= |old(~a17~0)| 1)) (< 5 |old(~a16~0)|)) [2023-04-01 03:11:10,959 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 587 604) no Hoare annotation was computed. [2023-04-01 03:11:10,959 INFO L899 garLoopResultBuilder]: For program point L601-1(line 601) no Hoare annotation was computed. [2023-04-01 03:11:10,959 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2023-04-01 03:11:10,960 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (or (not (= |old(~a21~0)| 1)) (<= ~a16~0 5) (not (= 14 ~a8~0)) (= 14 |old(~a8~0)|) (not (= |old(~a17~0)| 1)) (< 5 |old(~a16~0)|)) [2023-04-01 03:11:10,960 INFO L899 garLoopResultBuilder]: For program point L593-3(lines 587 604) no Hoare annotation was computed. [2023-04-01 03:11:10,961 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 587 604) the Hoare annotation is: (or (not (= |old(~a21~0)| 1)) (and (<= ~a16~0 |old(~a16~0)|) (= ~a21~0 1) (= ~a17~0 1) (not (= 14 ~a8~0))) (= 14 |old(~a8~0)|) (not (= |old(~a17~0)| 1)) (< 5 |old(~a16~0)|)) [2023-04-01 03:11:10,961 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= ~a21~0 |old(~a21~0)|) (<= ~a16~0 |old(~a16~0)|) (= ~a17~0 |old(~a17~0)|)) [2023-04-01 03:11:10,961 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-01 03:11:10,961 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2023-04-01 03:11:10,961 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2023-04-01 03:11:10,961 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2023-04-01 03:11:10,962 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2023-04-01 03:11:10,962 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2023-04-01 03:11:10,962 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2023-04-01 03:11:10,962 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2023-04-01 03:11:10,962 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2023-04-01 03:11:10,963 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2023-04-01 03:11:10,963 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2023-04-01 03:11:10,963 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2023-04-01 03:11:10,966 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2023-04-01 03:11:10,966 INFO L899 garLoopResultBuilder]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 576) no Hoare annotation was computed. [2023-04-01 03:11:10,966 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2023-04-01 03:11:10,967 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2023-04-01 03:11:10,967 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2023-04-01 03:11:10,968 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2023-04-01 03:11:10,968 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2023-04-01 03:11:10,968 INFO L899 garLoopResultBuilder]: For program point L572-1(lines 40 585) no Hoare annotation was computed. [2023-04-01 03:11:10,968 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2023-04-01 03:11:10,968 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2023-04-01 03:11:10,969 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2023-04-01 03:11:10,969 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2023-04-01 03:11:10,970 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2023-04-01 03:11:10,970 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2023-04-01 03:11:10,971 INFO L899 garLoopResultBuilder]: For program point L575-1(lines 40 585) no Hoare annotation was computed. [2023-04-01 03:11:10,971 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2023-04-01 03:11:10,971 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2023-04-01 03:11:10,971 INFO L899 garLoopResultBuilder]: For program point L576(line 576) no Hoare annotation was computed. [2023-04-01 03:11:10,971 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2023-04-01 03:11:10,971 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2023-04-01 03:11:10,971 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2023-04-01 03:11:10,971 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2023-04-01 03:11:10,971 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2023-04-01 03:11:10,971 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2023-04-01 03:11:10,971 INFO L899 garLoopResultBuilder]: For program point calculate_outputFINAL(lines 40 585) no Hoare annotation was computed. [2023-04-01 03:11:10,971 INFO L899 garLoopResultBuilder]: For program point calculate_outputEXIT(lines 40 585) no Hoare annotation was computed. [2023-04-01 03:11:10,971 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2023-04-01 03:11:10,972 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2023-04-01 03:11:10,972 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2023-04-01 03:11:10,972 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2023-04-01 03:11:10,972 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2023-04-01 03:11:10,972 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2023-04-01 03:11:10,972 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2023-04-01 03:11:10,972 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2023-04-01 03:11:10,972 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2023-04-01 03:11:10,972 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2023-04-01 03:11:10,972 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2023-04-01 03:11:10,973 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2023-04-01 03:11:10,975 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2023-04-01 03:11:10,976 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2023-04-01 03:11:10,976 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2023-04-01 03:11:10,976 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2023-04-01 03:11:10,977 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2023-04-01 03:11:10,977 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2023-04-01 03:11:10,977 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2023-04-01 03:11:10,977 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2023-04-01 03:11:10,977 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2023-04-01 03:11:10,977 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2023-04-01 03:11:10,978 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a21~0 |old(~a21~0)|)) (.cse1 (<= ~a16~0 |old(~a16~0)|)) (.cse2 (= ~a17~0 |old(~a17~0)|))) (and (or (and .cse0 .cse1 .cse2) (< 5 |old(~a16~0)|)) (or (= 14 |old(~a8~0)|) (and .cse0 .cse1 .cse2 (not (= 14 ~a8~0)))))) [2023-04-01 03:11:10,978 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2023-04-01 03:11:10,978 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2023-04-01 03:11:10,978 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2023-04-01 03:11:10,978 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2023-04-01 03:11:10,978 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2023-04-01 03:11:10,978 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2023-04-01 03:11:10,978 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2023-04-01 03:11:10,978 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2023-04-01 03:11:10,978 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2023-04-01 03:11:10,978 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2023-04-01 03:11:10,978 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2023-04-01 03:11:10,978 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2023-04-01 03:11:10,978 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2023-04-01 03:11:10,979 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-01 03:11:10,979 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (and (= ~a21~0 1) (= ~a17~0 1) (<= ~a16~0 5) (not (= 14 ~a8~0))) [2023-04-01 03:11:10,979 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-01 03:11:10,979 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-01 03:11:10,982 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-04-01 03:11:10,983 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 03:11:11,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 03:11:11 BoogieIcfgContainer [2023-04-01 03:11:11,002 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 03:11:11,003 INFO L158 Benchmark]: Toolchain (without parser) took 4674.16ms. Allocated memory was 238.0MB in the beginning and 299.9MB in the end (delta: 61.9MB). Free memory was 190.7MB in the beginning and 149.7MB in the end (delta: 41.0MB). Peak memory consumption was 103.9MB. Max. memory is 8.0GB. [2023-04-01 03:11:11,003 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 174.1MB. Free memory is still 124.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 03:11:11,003 INFO L158 Benchmark]: CACSL2BoogieTranslator took 373.59ms. Allocated memory is still 238.0MB. Free memory was 190.7MB in the beginning and 162.9MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-04-01 03:11:11,003 INFO L158 Benchmark]: Boogie Preprocessor took 102.65ms. Allocated memory is still 238.0MB. Free memory was 162.9MB in the beginning and 158.2MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-04-01 03:11:11,003 INFO L158 Benchmark]: RCFGBuilder took 1011.08ms. Allocated memory is still 238.0MB. Free memory was 158.2MB in the beginning and 127.9MB in the end (delta: 30.3MB). Peak memory consumption was 57.6MB. Max. memory is 8.0GB. [2023-04-01 03:11:11,003 INFO L158 Benchmark]: TraceAbstraction took 3181.75ms. Allocated memory was 238.0MB in the beginning and 299.9MB in the end (delta: 61.9MB). Free memory was 127.3MB in the beginning and 149.7MB in the end (delta: -22.3MB). Peak memory consumption was 40.1MB. Max. memory is 8.0GB. [2023-04-01 03:11:11,005 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 174.1MB. Free memory is still 124.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 373.59ms. Allocated memory is still 238.0MB. Free memory was 190.7MB in the beginning and 162.9MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 102.65ms. Allocated memory is still 238.0MB. Free memory was 162.9MB in the beginning and 158.2MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1011.08ms. Allocated memory is still 238.0MB. Free memory was 158.2MB in the beginning and 127.9MB in the end (delta: 30.3MB). Peak memory consumption was 57.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3181.75ms. Allocated memory was 238.0MB in the beginning and 299.9MB in the end (delta: 61.9MB). Free memory was 127.3MB in the beginning and 149.7MB in the end (delta: -22.3MB). Peak memory consumption was 40.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 576]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 520 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 520 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 68 mSDsCounter, 347 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1090 IncrementalHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 347 mSolverCounterUnsat, 46 mSDtfsCounter, 1090 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=317occurred in iteration=2, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 23 PreInvPairs, 43 NumberOfFragments, 131 HoareAnnotationTreeSize, 23 FomulaSimplifications, 292 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 137 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 385 NumberOfCodeBlocks, 385 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 381 ConstructedInterpolants, 0 QuantifiedInterpolants, 795 SizeOfPredicates, 1 NumberOfNonLiveVariables, 472 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 79/88 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((!(\old(a21) == 1) || a16 <= 5) || !(14 == a8)) || 14 == \old(a8)) || !(\old(a17) == 1)) || 5 < \old(a16) RESULT: Ultimate proved your program to be correct! [2023-04-01 03:11:11,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...