./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8b3b52d0771d28687db0ecd40f35ba0cd5ac6eaf2a4275309beef5f48092d06e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:22:53,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:22:53,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:22:53,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:22:53,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:22:53,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:22:53,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:22:53,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:22:53,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:22:53,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:22:53,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:22:53,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:22:53,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:22:53,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:22:53,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:22:53,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:22:53,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:22:53,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:22:53,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:22:53,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:22:53,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:22:53,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:22:53,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:22:53,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:22:53,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:22:53,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:22:53,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:22:53,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:22:53,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:22:53,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:22:53,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:22:53,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:22:53,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:22:53,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:22:53,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:22:53,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:22:53,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:22:53,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:22:53,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:22:53,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:22:53,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:22:53,741 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:22:53,779 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:22:53,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:22:53,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:22:53,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:22:53,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:22:53,781 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:22:53,782 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:22:53,782 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:22:53,782 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:22:53,782 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:22:53,783 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:22:53,783 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:22:53,783 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:22:53,783 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:22:53,784 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:22:53,784 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:22:53,784 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:22:53,784 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:22:53,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:22:53,785 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:22:53,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:22:53,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:22:53,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:22:53,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:22:53,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:22:53,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:22:53,787 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:22:53,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:22:53,788 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:22:53,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:22:53,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:22:53,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:22:53,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:22:53,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:22:53,789 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:22:53,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:22:53,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:22:53,790 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:22:53,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:22:53,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:22:53,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:22:53,791 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b3b52d0771d28687db0ecd40f35ba0cd5ac6eaf2a4275309beef5f48092d06e [2022-10-17 17:22:54,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:22:54,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:22:54,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:22:54,088 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:22:54,089 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:22:54,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/eca-rers2012/Problem01_label12.c [2022-10-17 17:22:54,157 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/data/f2343728b/6c8681a84c294a27826c464717b7610c/FLAG17046fc79 [2022-10-17 17:22:54,754 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:22:54,755 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/sv-benchmarks/c/eca-rers2012/Problem01_label12.c [2022-10-17 17:22:54,790 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/data/f2343728b/6c8681a84c294a27826c464717b7610c/FLAG17046fc79 [2022-10-17 17:22:55,136 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/data/f2343728b/6c8681a84c294a27826c464717b7610c [2022-10-17 17:22:55,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:22:55,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:22:55,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:22:55,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:22:55,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:22:55,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:22:55" (1/1) ... [2022-10-17 17:22:55,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c215709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:55, skipping insertion in model container [2022-10-17 17:22:55,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:22:55" (1/1) ... [2022-10-17 17:22:55,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:22:55,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:22:55,574 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/sv-benchmarks/c/eca-rers2012/Problem01_label12.c[20469,20482] [2022-10-17 17:22:55,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:22:55,602 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:22:55,713 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/sv-benchmarks/c/eca-rers2012/Problem01_label12.c[20469,20482] [2022-10-17 17:22:55,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:22:55,735 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:22:55,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:55 WrapperNode [2022-10-17 17:22:55,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:22:55,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:22:55,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:22:55,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:22:55,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:55" (1/1) ... [2022-10-17 17:22:55,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:55" (1/1) ... [2022-10-17 17:22:55,858 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2022-10-17 17:22:55,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:22:55,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:22:55,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:22:55,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:22:55,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:55" (1/1) ... [2022-10-17 17:22:55,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:55" (1/1) ... [2022-10-17 17:22:55,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:55" (1/1) ... [2022-10-17 17:22:55,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:55" (1/1) ... [2022-10-17 17:22:55,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:55" (1/1) ... [2022-10-17 17:22:55,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:55" (1/1) ... [2022-10-17 17:22:55,922 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:55" (1/1) ... [2022-10-17 17:22:55,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:55" (1/1) ... [2022-10-17 17:22:55,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:22:55,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:22:55,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:22:55,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:22:55,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:55" (1/1) ... [2022-10-17 17:22:55,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:22:56,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:22:56,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:22:56,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:22:56,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:22:56,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:22:56,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:22:56,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:22:56,148 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:22:56,150 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:22:57,411 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:22:57,659 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:22:57,659 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:22:57,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:22:57 BoogieIcfgContainer [2022-10-17 17:22:57,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:22:57,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:22:57,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:22:57,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:22:57,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:22:55" (1/3) ... [2022-10-17 17:22:57,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fc8ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:22:57, skipping insertion in model container [2022-10-17 17:22:57,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:55" (2/3) ... [2022-10-17 17:22:57,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fc8ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:22:57, skipping insertion in model container [2022-10-17 17:22:57,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:22:57" (3/3) ... [2022-10-17 17:22:57,673 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label12.c [2022-10-17 17:22:57,693 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:22:57,693 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:22:57,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:22:57,757 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;@320bf91a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:22:57,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:22:57,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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) [2022-10-17 17:22:57,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-17 17:22:57,776 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:22:57,777 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] [2022-10-17 17:22:57,777 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:22:57,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:22:57,783 INFO L85 PathProgramCache]: Analyzing trace with hash 379027079, now seen corresponding path program 1 times [2022-10-17 17:22:57,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:22:57,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416397480] [2022-10-17 17:22:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:57,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:22:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:22:58,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:22:58,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416397480] [2022-10-17 17:22:58,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416397480] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:22:58,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:22:58,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:22:58,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97723110] [2022-10-17 17:22:58,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:22:58,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:22:58,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:22:58,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:22:58,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:22:58,510 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) [2022-10-17 17:22:58,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:22:58,969 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2022-10-17 17:22:58,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:22:58,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) Word has length 71 [2022-10-17 17:22:58,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:22:58,995 INFO L225 Difference]: With dead ends: 224 [2022-10-17 17:22:58,995 INFO L226 Difference]: Without dead ends: 145 [2022-10-17 17:22:58,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:22:59,004 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 26 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:22:59,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 17:22:59,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-10-17 17:22:59,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-10-17 17:22:59,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 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) [2022-10-17 17:22:59,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2022-10-17 17:22:59,086 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2022-10-17 17:22:59,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:22:59,088 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2022-10-17 17:22:59,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) [2022-10-17 17:22:59,089 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2022-10-17 17:22:59,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-17 17:22:59,095 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:22:59,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:22:59,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:22:59,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:22:59,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:22:59,097 INFO L85 PathProgramCache]: Analyzing trace with hash -615334630, now seen corresponding path program 1 times [2022-10-17 17:22:59,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:22:59,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877817912] [2022-10-17 17:22:59,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:59,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:22:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:22:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:22:59,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:22:59,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877817912] [2022-10-17 17:22:59,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877817912] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:22:59,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:22:59,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:22:59,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240370428] [2022-10-17 17:22:59,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:22:59,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:22:59,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:22:59,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:22:59,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:22:59,300 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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) [2022-10-17 17:22:59,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:22:59,690 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2022-10-17 17:22:59,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:22:59,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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) Word has length 77 [2022-10-17 17:22:59,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:22:59,695 INFO L225 Difference]: With dead ends: 431 [2022-10-17 17:22:59,695 INFO L226 Difference]: Without dead ends: 287 [2022-10-17 17:22:59,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:22:59,704 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 82 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:22:59,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 32 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 17:22:59,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-10-17 17:22:59,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-10-17 17:22:59,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6363636363636365) internal successors, (468), 286 states have internal predecessors, (468), 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) [2022-10-17 17:22:59,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 468 transitions. [2022-10-17 17:22:59,744 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 468 transitions. Word has length 77 [2022-10-17 17:22:59,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:22:59,746 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 468 transitions. [2022-10-17 17:22:59,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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) [2022-10-17 17:22:59,747 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 468 transitions. [2022-10-17 17:22:59,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-17 17:22:59,755 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:22:59,756 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] [2022-10-17 17:22:59,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:22:59,760 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:22:59,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:22:59,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1583652230, now seen corresponding path program 1 times [2022-10-17 17:22:59,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:22:59,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748484556] [2022-10-17 17:22:59,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:22:59,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:22:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:00,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:00,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:00,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748484556] [2022-10-17 17:23:00,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748484556] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:00,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:00,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:00,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705352153] [2022-10-17 17:23:00,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:00,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:23:00,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:00,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:23:00,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:23:00,334 INFO L87 Difference]: Start difference. First operand 287 states and 468 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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) [2022-10-17 17:23:00,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:00,868 INFO L93 Difference]: Finished difference Result 784 states and 1255 transitions. [2022-10-17 17:23:00,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:23:00,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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) Word has length 78 [2022-10-17 17:23:00,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:00,872 INFO L225 Difference]: With dead ends: 784 [2022-10-17 17:23:00,872 INFO L226 Difference]: Without dead ends: 429 [2022-10-17 17:23:00,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:23:00,875 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 72 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:00,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 74 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 17:23:00,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-10-17 17:23:00,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2022-10-17 17:23:00,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.3014018691588785) internal successors, (557), 428 states have internal predecessors, (557), 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) [2022-10-17 17:23:00,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 557 transitions. [2022-10-17 17:23:00,896 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 557 transitions. Word has length 78 [2022-10-17 17:23:00,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:00,896 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 557 transitions. [2022-10-17 17:23:00,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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) [2022-10-17 17:23:00,897 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 557 transitions. [2022-10-17 17:23:00,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-10-17 17:23:00,898 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:00,899 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:00,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:23:00,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:00,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:00,900 INFO L85 PathProgramCache]: Analyzing trace with hash 713142189, now seen corresponding path program 1 times [2022-10-17 17:23:00,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:00,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561195059] [2022-10-17 17:23:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:00,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 17:23:01,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:01,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561195059] [2022-10-17 17:23:01,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561195059] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:01,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:01,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:23:01,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424324310] [2022-10-17 17:23:01,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:01,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:01,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:01,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:01,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:01,136 INFO L87 Difference]: Start difference. First operand 429 states and 557 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2022-10-17 17:23:01,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:01,381 INFO L93 Difference]: Finished difference Result 857 states and 1138 transitions. [2022-10-17 17:23:01,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:01,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) Word has length 83 [2022-10-17 17:23:01,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:01,385 INFO L225 Difference]: With dead ends: 857 [2022-10-17 17:23:01,385 INFO L226 Difference]: Without dead ends: 500 [2022-10-17 17:23:01,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:01,392 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 69 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:01,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 41 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:23:01,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-10-17 17:23:01,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2022-10-17 17:23:01,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.282565130260521) internal successors, (640), 499 states have internal predecessors, (640), 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) [2022-10-17 17:23:01,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 640 transitions. [2022-10-17 17:23:01,415 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 640 transitions. Word has length 83 [2022-10-17 17:23:01,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:01,416 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 640 transitions. [2022-10-17 17:23:01,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2022-10-17 17:23:01,416 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 640 transitions. [2022-10-17 17:23:01,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-10-17 17:23:01,420 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:01,421 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2022-10-17 17:23:01,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:23:01,421 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:01,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:01,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1234014229, now seen corresponding path program 1 times [2022-10-17 17:23:01,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:01,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023885879] [2022-10-17 17:23:01,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:01,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-17 17:23:01,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:01,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023885879] [2022-10-17 17:23:01,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023885879] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:01,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:01,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:01,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059280404] [2022-10-17 17:23:01,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:01,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:01,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:01,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:01,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:01,571 INFO L87 Difference]: Start difference. First operand 500 states and 640 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2022-10-17 17:23:01,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:01,861 INFO L93 Difference]: Finished difference Result 1283 states and 1651 transitions. [2022-10-17 17:23:01,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:01,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) Word has length 92 [2022-10-17 17:23:01,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:01,867 INFO L225 Difference]: With dead ends: 1283 [2022-10-17 17:23:01,867 INFO L226 Difference]: Without dead ends: 855 [2022-10-17 17:23:01,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:01,869 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 74 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:01,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 15 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 17:23:01,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-10-17 17:23:01,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 642. [2022-10-17 17:23:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.2776911076443058) internal successors, (819), 641 states have internal predecessors, (819), 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) [2022-10-17 17:23:01,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 819 transitions. [2022-10-17 17:23:01,891 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 819 transitions. Word has length 92 [2022-10-17 17:23:01,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:01,891 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 819 transitions. [2022-10-17 17:23:01,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2022-10-17 17:23:01,892 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 819 transitions. [2022-10-17 17:23:01,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-10-17 17:23:01,894 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:01,894 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-10-17 17:23:01,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 17:23:01,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:01,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:01,895 INFO L85 PathProgramCache]: Analyzing trace with hash -599283684, now seen corresponding path program 1 times [2022-10-17 17:23:01,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:01,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796468584] [2022-10-17 17:23:01,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:01,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 17:23:02,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:02,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796468584] [2022-10-17 17:23:02,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796468584] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:02,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:02,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:02,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198641459] [2022-10-17 17:23:02,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:02,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:23:02,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:02,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:23:02,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:23:02,081 INFO L87 Difference]: Start difference. First operand 642 states and 819 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2022-10-17 17:23:02,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:02,529 INFO L93 Difference]: Finished difference Result 1354 states and 1784 transitions. [2022-10-17 17:23:02,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:23:02,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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) Word has length 98 [2022-10-17 17:23:02,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:02,535 INFO L225 Difference]: With dead ends: 1354 [2022-10-17 17:23:02,535 INFO L226 Difference]: Without dead ends: 784 [2022-10-17 17:23:02,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:23:02,537 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 207 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:02,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 29 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 17:23:02,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-10-17 17:23:02,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2022-10-17 17:23:02,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.2669220945083015) internal successors, (992), 783 states have internal predecessors, (992), 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) [2022-10-17 17:23:02,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 992 transitions. [2022-10-17 17:23:02,563 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 992 transitions. Word has length 98 [2022-10-17 17:23:02,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:02,564 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 992 transitions. [2022-10-17 17:23:02,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2022-10-17 17:23:02,564 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 992 transitions. [2022-10-17 17:23:02,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-10-17 17:23:02,566 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:02,566 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:02,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 17:23:02,567 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:02,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:02,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1359570745, now seen corresponding path program 1 times [2022-10-17 17:23:02,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:02,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25285564] [2022-10-17 17:23:02,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:02,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-17 17:23:02,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:02,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25285564] [2022-10-17 17:23:02,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25285564] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:02,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:02,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:02,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326985585] [2022-10-17 17:23:02,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:02,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:23:02,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:02,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:23:02,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:23:02,829 INFO L87 Difference]: Start difference. First operand 784 states and 992 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-10-17 17:23:03,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:03,280 INFO L93 Difference]: Finished difference Result 1780 states and 2274 transitions. [2022-10-17 17:23:03,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:23:03,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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) Word has length 112 [2022-10-17 17:23:03,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:03,287 INFO L225 Difference]: With dead ends: 1780 [2022-10-17 17:23:03,287 INFO L226 Difference]: Without dead ends: 1068 [2022-10-17 17:23:03,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:23:03,289 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 142 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:03,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 40 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 17:23:03,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-10-17 17:23:03,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2022-10-17 17:23:03,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.251004016064257) internal successors, (1246), 996 states have internal predecessors, (1246), 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) [2022-10-17 17:23:03,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1246 transitions. [2022-10-17 17:23:03,324 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1246 transitions. Word has length 112 [2022-10-17 17:23:03,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:03,324 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1246 transitions. [2022-10-17 17:23:03,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-10-17 17:23:03,325 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1246 transitions. [2022-10-17 17:23:03,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-10-17 17:23:03,329 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:03,330 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:03,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 17:23:03,330 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:03,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:03,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1726475356, now seen corresponding path program 1 times [2022-10-17 17:23:03,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:03,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964275525] [2022-10-17 17:23:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:03,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:03,608 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-17 17:23:03,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:03,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964275525] [2022-10-17 17:23:03,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964275525] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:03,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:03,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:03,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360785742] [2022-10-17 17:23:03,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:03,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:23:03,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:03,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:23:03,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:23:03,612 INFO L87 Difference]: Start difference. First operand 997 states and 1246 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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) [2022-10-17 17:23:04,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:04,012 INFO L93 Difference]: Finished difference Result 2064 states and 2571 transitions. [2022-10-17 17:23:04,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:23:04,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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) Word has length 129 [2022-10-17 17:23:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:04,019 INFO L225 Difference]: With dead ends: 2064 [2022-10-17 17:23:04,019 INFO L226 Difference]: Without dead ends: 1139 [2022-10-17 17:23:04,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:23:04,022 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 203 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:04,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 28 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 17:23:04,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2022-10-17 17:23:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 997. [2022-10-17 17:23:04,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.2389558232931728) internal successors, (1234), 996 states have internal predecessors, (1234), 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) [2022-10-17 17:23:04,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1234 transitions. [2022-10-17 17:23:04,068 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1234 transitions. Word has length 129 [2022-10-17 17:23:04,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:04,069 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1234 transitions. [2022-10-17 17:23:04,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 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) [2022-10-17 17:23:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1234 transitions. [2022-10-17 17:23:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-10-17 17:23:04,072 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:04,073 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:04,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 17:23:04,074 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:04,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:04,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1075041372, now seen corresponding path program 1 times [2022-10-17 17:23:04,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:04,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924421467] [2022-10-17 17:23:04,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:04,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:04,282 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-17 17:23:04,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:04,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924421467] [2022-10-17 17:23:04,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924421467] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:04,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:04,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:04,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628614124] [2022-10-17 17:23:04,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:04,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:04,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:04,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:04,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:04,286 INFO L87 Difference]: Start difference. First operand 997 states and 1234 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2022-10-17 17:23:04,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:04,579 INFO L93 Difference]: Finished difference Result 2135 states and 2651 transitions. [2022-10-17 17:23:04,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:04,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) Word has length 172 [2022-10-17 17:23:04,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:04,587 INFO L225 Difference]: With dead ends: 2135 [2022-10-17 17:23:04,587 INFO L226 Difference]: Without dead ends: 1210 [2022-10-17 17:23:04,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:04,592 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 26 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:04,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 113 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 17:23:04,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2022-10-17 17:23:04,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2022-10-17 17:23:04,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1138 states have (on average 1.2214411247803163) internal successors, (1390), 1138 states have internal predecessors, (1390), 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) [2022-10-17 17:23:04,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1390 transitions. [2022-10-17 17:23:04,657 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1390 transitions. Word has length 172 [2022-10-17 17:23:04,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:04,659 INFO L495 AbstractCegarLoop]: Abstraction has 1139 states and 1390 transitions. [2022-10-17 17:23:04,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2022-10-17 17:23:04,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1390 transitions. [2022-10-17 17:23:04,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-10-17 17:23:04,663 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:04,664 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-10-17 17:23:04,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 17:23:04,664 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:04,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:04,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1532630089, now seen corresponding path program 1 times [2022-10-17 17:23:04,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:04,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202939969] [2022-10-17 17:23:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:04,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:05,302 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 63 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:23:05,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:05,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202939969] [2022-10-17 17:23:05,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202939969] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:23:05,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817363365] [2022-10-17 17:23:05,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:05,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:05,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:05,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:23:05,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:23:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:05,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 17:23:05,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-10-17 17:23:05,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:23:05,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817363365] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:05,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:23:05,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-10-17 17:23:05,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426709118] [2022-10-17 17:23:05,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:05,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:05,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:05,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:05,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:23:05,881 INFO L87 Difference]: Start difference. First operand 1139 states and 1390 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 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) [2022-10-17 17:23:06,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:06,168 INFO L93 Difference]: Finished difference Result 1780 states and 2133 transitions. [2022-10-17 17:23:06,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:06,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 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) Word has length 175 [2022-10-17 17:23:06,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:06,181 INFO L225 Difference]: With dead ends: 1780 [2022-10-17 17:23:06,185 INFO L226 Difference]: Without dead ends: 1778 [2022-10-17 17:23:06,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:23:06,187 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:06,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 27 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 17:23:06,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2022-10-17 17:23:06,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1565. [2022-10-17 17:23:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1564 states have (on average 1.2046035805626598) internal successors, (1884), 1564 states have internal predecessors, (1884), 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) [2022-10-17 17:23:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1884 transitions. [2022-10-17 17:23:06,245 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1884 transitions. Word has length 175 [2022-10-17 17:23:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:06,245 INFO L495 AbstractCegarLoop]: Abstraction has 1565 states and 1884 transitions. [2022-10-17 17:23:06,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 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) [2022-10-17 17:23:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1884 transitions. [2022-10-17 17:23:06,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-10-17 17:23:06,249 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:06,250 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-10-17 17:23:06,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:06,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-17 17:23:06,472 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:06,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:06,473 INFO L85 PathProgramCache]: Analyzing trace with hash -596393142, now seen corresponding path program 1 times [2022-10-17 17:23:06,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:06,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407128078] [2022-10-17 17:23:06,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:06,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:07,048 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 159 proven. 35 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-10-17 17:23:07,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:07,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407128078] [2022-10-17 17:23:07,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407128078] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:23:07,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894845593] [2022-10-17 17:23:07,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:07,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:07,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:07,053 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:23:07,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:23:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:07,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 17:23:07,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-10-17 17:23:07,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:23:07,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894845593] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:07,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:23:07,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-10-17 17:23:07,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647209804] [2022-10-17 17:23:07,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:07,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:07,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:07,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:07,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:23:07,424 INFO L87 Difference]: Start difference. First operand 1565 states and 1884 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2022-10-17 17:23:07,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:07,733 INFO L93 Difference]: Finished difference Result 3129 states and 3767 transitions. [2022-10-17 17:23:07,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:07,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) Word has length 188 [2022-10-17 17:23:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:07,743 INFO L225 Difference]: With dead ends: 3129 [2022-10-17 17:23:07,743 INFO L226 Difference]: Without dead ends: 1565 [2022-10-17 17:23:07,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:23:07,746 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 36 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:07,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 103 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 17:23:07,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-10-17 17:23:07,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 997. [2022-10-17 17:23:07,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.1947791164658634) internal successors, (1190), 996 states have internal predecessors, (1190), 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) [2022-10-17 17:23:07,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1190 transitions. [2022-10-17 17:23:07,792 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1190 transitions. Word has length 188 [2022-10-17 17:23:07,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:07,793 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1190 transitions. [2022-10-17 17:23:07,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2022-10-17 17:23:07,793 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1190 transitions. [2022-10-17 17:23:07,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-10-17 17:23:07,797 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:07,797 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:07,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:08,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-17 17:23:08,025 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:08,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:08,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2104901632, now seen corresponding path program 1 times [2022-10-17 17:23:08,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:08,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961788607] [2022-10-17 17:23:08,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:08,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 124 proven. 67 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-17 17:23:08,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:08,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961788607] [2022-10-17 17:23:08,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961788607] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:23:08,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324661920] [2022-10-17 17:23:08,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:08,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:08,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:08,370 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:23:08,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 17:23:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:08,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 17:23:08,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-10-17 17:23:08,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:23:08,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324661920] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:08,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:23:08,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-17 17:23:08,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947063314] [2022-10-17 17:23:08,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:08,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:08,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:08,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:08,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:23:08,646 INFO L87 Difference]: Start difference. First operand 997 states and 1190 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-10-17 17:23:08,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:08,915 INFO L93 Difference]: Finished difference Result 2206 states and 2620 transitions. [2022-10-17 17:23:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:08,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) Word has length 197 [2022-10-17 17:23:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:08,922 INFO L225 Difference]: With dead ends: 2206 [2022-10-17 17:23:08,922 INFO L226 Difference]: Without dead ends: 997 [2022-10-17 17:23:08,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:23:08,924 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:08,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 106 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:23:08,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-10-17 17:23:08,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2022-10-17 17:23:08,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.132972972972973) internal successors, (1048), 925 states have internal predecessors, (1048), 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) [2022-10-17 17:23:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1048 transitions. [2022-10-17 17:23:08,956 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1048 transitions. Word has length 197 [2022-10-17 17:23:08,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:08,956 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1048 transitions. [2022-10-17 17:23:08,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-10-17 17:23:08,957 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1048 transitions. [2022-10-17 17:23:08,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-10-17 17:23:08,961 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:08,961 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:08,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:09,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:09,181 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:09,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:09,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1502819662, now seen corresponding path program 1 times [2022-10-17 17:23:09,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:09,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135647277] [2022-10-17 17:23:09,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:09,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:09,862 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 143 proven. 86 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-17 17:23:09,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:09,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135647277] [2022-10-17 17:23:09,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135647277] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:23:09,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124650114] [2022-10-17 17:23:09,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:09,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:09,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:09,864 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:23:09,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 17:23:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:10,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 17:23:10,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:23:10,138 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-10-17 17:23:10,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:23:10,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124650114] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:10,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:23:10,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-10-17 17:23:10,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833907129] [2022-10-17 17:23:10,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:10,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:10,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:10,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:10,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:23:10,144 INFO L87 Difference]: Start difference. First operand 926 states and 1048 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-10-17 17:23:10,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:10,415 INFO L93 Difference]: Finished difference Result 1920 states and 2186 transitions. [2022-10-17 17:23:10,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:10,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) Word has length 216 [2022-10-17 17:23:10,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:10,417 INFO L225 Difference]: With dead ends: 1920 [2022-10-17 17:23:10,417 INFO L226 Difference]: Without dead ends: 0 [2022-10-17 17:23:10,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:23:10,421 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 5 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:10,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 94 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:23:10,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-17 17:23:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-17 17:23:10,422 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) [2022-10-17 17:23:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-17 17:23:10,423 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 216 [2022-10-17 17:23:10,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:10,423 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 17:23:10,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-10-17 17:23:10,424 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-17 17:23:10,424 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-17 17:23:10,426 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 17:23:10,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 17:23:10,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:23:10,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-10-17 17:23:11,746 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2022-10-17 17:23:11,746 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2022-10-17 17:23:11,746 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2022-10-17 17:23:11,746 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2022-10-17 17:23:11,746 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2022-10-17 17:23:11,746 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2022-10-17 17:23:11,746 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2022-10-17 17:23:11,747 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2022-10-17 17:23:11,747 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2022-10-17 17:23:11,747 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2022-10-17 17:23:11,747 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2022-10-17 17:23:11,747 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2022-10-17 17:23:11,747 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2022-10-17 17:23:11,747 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2022-10-17 17:23:11,747 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2022-10-17 17:23:11,747 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2022-10-17 17:23:11,747 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2022-10-17 17:23:11,747 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2022-10-17 17:23:11,747 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2022-10-17 17:23:11,748 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2022-10-17 17:23:11,748 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2022-10-17 17:23:11,748 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2022-10-17 17:23:11,748 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2022-10-17 17:23:11,748 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2022-10-17 17:23:11,748 INFO L899 garLoopResultBuilder]: For program point L542-1(lines 40 585) no Hoare annotation was computed. [2022-10-17 17:23:11,748 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2022-10-17 17:23:11,748 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2022-10-17 17:23:11,748 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2022-10-17 17:23:11,748 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2022-10-17 17:23:11,748 INFO L899 garLoopResultBuilder]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2022-10-17 17:23:11,749 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2022-10-17 17:23:11,749 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2022-10-17 17:23:11,749 INFO L899 garLoopResultBuilder]: For program point L546(line 546) no Hoare annotation was computed. [2022-10-17 17:23:11,749 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2022-10-17 17:23:11,749 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2022-10-17 17:23:11,749 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2022-10-17 17:23:11,749 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2022-10-17 17:23:11,749 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2022-10-17 17:23:11,749 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2022-10-17 17:23:11,749 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-10-17 17:23:11,749 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2022-10-17 17:23:11,750 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2022-10-17 17:23:11,750 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2022-10-17 17:23:11,750 INFO L895 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse1 (= ~a16~0 6)) (.cse2 (<= ~a17~0 0)) (.cse8 (= ~a20~0 1)) (.cse3 (= ~a21~0 1)) (.cse4 (<= 15 ~a8~0)) (.cse0 (<= ~a20~0 0)) (.cse7 (<= ~a8~0 13)) (.cse5 (= ~a17~0 1)) (.cse6 (<= ~a16~0 5))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse3 .cse5 .cse4) (and .cse0 .cse2 .cse3 .cse6) (and .cse7 .cse8) (and (<= ~a7~0 0) (= ~a12~0 8) .cse3 .cse5 .cse8) (and .cse2 .cse3 .cse6 .cse8) (and .cse2 .cse3 .cse8 .cse4) (and .cse0 .cse7 .cse3 .cse6) (and .cse0 .cse3 .cse5 .cse6 .cse4) (and .cse0 .cse7 .cse5 .cse6))) [2022-10-17 17:23:11,750 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2022-10-17 17:23:11,750 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2022-10-17 17:23:11,751 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2022-10-17 17:23:11,751 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2022-10-17 17:23:11,751 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2022-10-17 17:23:11,751 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2022-10-17 17:23:11,751 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2022-10-17 17:23:11,751 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-10-17 17:23:11,751 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2022-10-17 17:23:11,751 INFO L902 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2022-10-17 17:23:11,751 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2022-10-17 17:23:11,751 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2022-10-17 17:23:11,751 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2022-10-17 17:23:11,752 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2022-10-17 17:23:11,752 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2022-10-17 17:23:11,752 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2022-10-17 17:23:11,752 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2022-10-17 17:23:11,752 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2022-10-17 17:23:11,752 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2022-10-17 17:23:11,752 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2022-10-17 17:23:11,752 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2022-10-17 17:23:11,752 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2022-10-17 17:23:11,752 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2022-10-17 17:23:11,753 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse1 (= ~a16~0 6)) (.cse2 (<= ~a17~0 0)) (.cse8 (= ~a20~0 1)) (.cse3 (= ~a21~0 1)) (.cse4 (<= 15 ~a8~0)) (.cse0 (<= ~a20~0 0)) (.cse7 (<= ~a8~0 13)) (.cse5 (= ~a17~0 1)) (.cse6 (<= ~a16~0 5))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse3 .cse5 .cse4) (and .cse0 .cse2 .cse3 .cse6) (and .cse7 .cse8) (and (<= ~a7~0 0) (= ~a12~0 8) .cse3 .cse5 .cse8) (and .cse2 .cse3 .cse6 .cse8) (and .cse2 .cse3 .cse8 .cse4) (and .cse0 .cse7 .cse3 .cse6) (and .cse0 .cse3 .cse5 .cse6 .cse4) (and .cse0 .cse7 .cse5 .cse6))) [2022-10-17 17:23:11,753 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2022-10-17 17:23:11,753 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 546) no Hoare annotation was computed. [2022-10-17 17:23:11,753 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2022-10-17 17:23:11,753 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2022-10-17 17:23:11,753 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2022-10-17 17:23:11,753 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2022-10-17 17:23:11,754 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2022-10-17 17:23:11,754 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2022-10-17 17:23:11,757 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:11,759 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:23:11,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:23:11 BoogieIcfgContainer [2022-10-17 17:23:11,797 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:23:11,797 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:23:11,797 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:23:11,798 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:23:11,798 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:22:57" (3/4) ... [2022-10-17 17:23:11,804 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 17:23:11,836 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 109 nodes and edges [2022-10-17 17:23:11,837 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-10-17 17:23:11,839 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-10-17 17:23:11,841 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 17:23:12,023 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/witness.graphml [2022-10-17 17:23:12,023 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:23:12,024 INFO L158 Benchmark]: Toolchain (without parser) took 16883.56ms. Allocated memory was 96.5MB in the beginning and 325.1MB in the end (delta: 228.6MB). Free memory was 61.3MB in the beginning and 207.1MB in the end (delta: -145.9MB). Peak memory consumption was 81.9MB. Max. memory is 16.1GB. [2022-10-17 17:23:12,024 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 77.6MB. Free memory was 57.7MB in the beginning and 57.7MB in the end (delta: 27.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:23:12,025 INFO L158 Benchmark]: CACSL2BoogieTranslator took 601.80ms. Allocated memory is still 96.5MB. Free memory was 61.0MB in the beginning and 53.6MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 17:23:12,026 INFO L158 Benchmark]: Boogie Procedure Inliner took 113.70ms. Allocated memory is still 96.5MB. Free memory was 53.6MB in the beginning and 47.8MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-10-17 17:23:12,027 INFO L158 Benchmark]: Boogie Preprocessor took 105.45ms. Allocated memory is still 96.5MB. Free memory was 47.8MB in the beginning and 43.3MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 17:23:12,027 INFO L158 Benchmark]: RCFGBuilder took 1697.24ms. Allocated memory was 96.5MB in the beginning and 125.8MB in the end (delta: 29.4MB). Free memory was 43.3MB in the beginning and 88.1MB in the end (delta: -44.9MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2022-10-17 17:23:12,028 INFO L158 Benchmark]: TraceAbstraction took 14131.81ms. Allocated memory was 125.8MB in the beginning and 325.1MB in the end (delta: 199.2MB). Free memory was 87.9MB in the beginning and 217.6MB in the end (delta: -129.7MB). Peak memory consumption was 154.4MB. Max. memory is 16.1GB. [2022-10-17 17:23:12,028 INFO L158 Benchmark]: Witness Printer took 225.89ms. Allocated memory is still 325.1MB. Free memory was 217.6MB in the beginning and 207.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:23:12,035 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 77.6MB. Free memory was 57.7MB in the beginning and 57.7MB in the end (delta: 27.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 601.80ms. Allocated memory is still 96.5MB. Free memory was 61.0MB in the beginning and 53.6MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 113.70ms. Allocated memory is still 96.5MB. Free memory was 53.6MB in the beginning and 47.8MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 105.45ms. Allocated memory is still 96.5MB. Free memory was 47.8MB in the beginning and 43.3MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1697.24ms. Allocated memory was 96.5MB in the beginning and 125.8MB in the end (delta: 29.4MB). Free memory was 43.3MB in the beginning and 88.1MB in the end (delta: -44.9MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * TraceAbstraction took 14131.81ms. Allocated memory was 125.8MB in the beginning and 325.1MB in the end (delta: 199.2MB). Free memory was 87.9MB in the beginning and 217.6MB in the end (delta: -129.7MB). Peak memory consumption was 154.4MB. Max. memory is 16.1GB. * Witness Printer took 225.89ms. Allocated memory is still 325.1MB. Free memory was 217.6MB in the beginning and 207.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * 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: 546]: 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 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.0s, OverallIterations: 13, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 972 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 972 mSDsluCounter, 731 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62 mSDsCounter, 715 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3061 IncrementalHoareTripleChecker+Invalid, 3776 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 715 mSolverCounterUnsat, 670 mSDtfsCounter, 3061 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 816 GetRequests, 786 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1565occurred in iteration=10, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 1349 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 41 NumberOfFragments, 275 HoareAnnotationTreeSize, 3 FomulaSimplifications, 174 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 3 FomulaSimplificationsInter, 2822 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 2464 NumberOfCodeBlocks, 2464 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2447 ConstructedInterpolants, 0 QuantifiedInterpolants, 11962 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1760 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 1862/2142 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: ((((((((((((a20 <= 0 && a16 == 6) && a17 <= 0) && a21 == 1) && 15 <= a8) || ((((a20 <= 0 && a16 == 6) && a21 == 1) && a17 == 1) && 15 <= a8)) || (((a20 <= 0 && a17 <= 0) && a21 == 1) && a16 <= 5)) || (a8 <= 13 && a20 == 1)) || ((((a7 <= 0 && a12 == 8) && a21 == 1) && a17 == 1) && a20 == 1)) || (((a17 <= 0 && a21 == 1) && a16 <= 5) && a20 == 1)) || (((a17 <= 0 && a21 == 1) && a20 == 1) && 15 <= a8)) || (((a20 <= 0 && a8 <= 13) && a21 == 1) && a16 <= 5)) || ((((a20 <= 0 && a21 == 1) && a17 == 1) && a16 <= 5) && 15 <= a8)) || (((a20 <= 0 && a8 <= 13) && a17 == 1) && a16 <= 5) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((((a20 <= 0 && a16 == 6) && a17 <= 0) && a21 == 1) && 15 <= a8) || ((((a20 <= 0 && a16 == 6) && a21 == 1) && a17 == 1) && 15 <= a8)) || (((a20 <= 0 && a17 <= 0) && a21 == 1) && a16 <= 5)) || (a8 <= 13 && a20 == 1)) || ((((a7 <= 0 && a12 == 8) && a21 == 1) && a17 == 1) && a20 == 1)) || (((a17 <= 0 && a21 == 1) && a16 <= 5) && a20 == 1)) || (((a17 <= 0 && a21 == 1) && a20 == 1) && 15 <= a8)) || (((a20 <= 0 && a8 <= 13) && a21 == 1) && a16 <= 5)) || ((((a20 <= 0 && a21 == 1) && a17 == 1) && a16 <= 5) && 15 <= a8)) || (((a20 <= 0 && a8 <= 13) && a17 == 1) && a16 <= 5) RESULT: Ultimate proved your program to be correct! [2022-10-17 17:23:12,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bedcd30-b46d-4024-a9fd-ad7614941d14/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE