./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label22.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label22.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9 --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 b6203532a9ef5ba90e15dbd2d5728025b7640a6606e85e563b08b8dcbd8cbea0 --- 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-6b4ec56 [2022-11-20 20:31:46,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:31:46,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:31:46,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:31:46,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:31:46,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:31:46,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:31:46,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:31:46,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:31:46,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:31:46,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:31:46,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:31:46,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:31:46,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:31:46,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:31:46,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:31:46,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:31:46,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:31:46,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:31:46,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:31:46,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:31:46,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:31:46,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:31:46,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:31:46,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:31:46,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:31:46,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:31:46,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:31:46,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:31:46,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:31:46,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:31:46,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:31:46,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:31:46,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:31:46,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:31:46,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:31:46,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:31:46,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:31:46,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:31:46,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:31:46,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:31:46,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:31:46,809 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:31:46,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:31:46,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:31:46,811 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:31:46,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:31:46,813 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:31:46,813 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:31:46,814 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:31:46,814 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:31:46,814 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:31:46,816 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:31:46,816 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:31:46,817 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:31:46,817 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:31:46,818 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:31:46,818 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:31:46,818 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:31:46,819 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:31:46,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:31:46,821 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:31:46,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:31:46,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:31:46,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:31:46,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:31:46,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:31:46,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:31:46,824 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:31:46,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:31:46,825 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:31:46,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:31:46,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:31:46,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:31:46,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:31:46,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:31:46,827 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:31:46,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:31:46,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:31:46,829 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:31:46,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:31:46,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:31:46,830 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:31:46,830 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_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6203532a9ef5ba90e15dbd2d5728025b7640a6606e85e563b08b8dcbd8cbea0 [2022-11-20 20:31:47,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:31:47,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:31:47,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:31:47,281 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:31:47,282 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:31:47,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/eca-rers2012/Problem02_label22.c [2022-11-20 20:31:50,668 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:31:51,013 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:31:51,014 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/sv-benchmarks/c/eca-rers2012/Problem02_label22.c [2022-11-20 20:31:51,028 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/data/86483ac8b/be58ba9ad84e4c2d9253ea97cc95d1d6/FLAG76367be99 [2022-11-20 20:31:51,046 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/data/86483ac8b/be58ba9ad84e4c2d9253ea97cc95d1d6 [2022-11-20 20:31:51,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:31:51,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:31:51,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:31:51,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:31:51,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:31:51,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:31:51" (1/1) ... [2022-11-20 20:31:51,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1798dd6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:31:51, skipping insertion in model container [2022-11-20 20:31:51,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:31:51" (1/1) ... [2022-11-20 20:31:51,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:31:51,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:31:51,530 WARN L237 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_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/sv-benchmarks/c/eca-rers2012/Problem02_label22.c[16445,16458] [2022-11-20 20:31:51,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:31:51,623 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:31:51,730 WARN L237 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_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/sv-benchmarks/c/eca-rers2012/Problem02_label22.c[16445,16458] [2022-11-20 20:31:51,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:31:51,773 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:31:51,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:31:51 WrapperNode [2022-11-20 20:31:51,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:31:51,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:31:51,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:31:51,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:31:51,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:31:51" (1/1) ... [2022-11-20 20:31:51,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:31:51" (1/1) ... [2022-11-20 20:31:51,916 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2022-11-20 20:31:51,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:31:51,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:31:51,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:31:51,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:31:51,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:31:51" (1/1) ... [2022-11-20 20:31:51,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:31:51" (1/1) ... [2022-11-20 20:31:51,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:31:51" (1/1) ... [2022-11-20 20:31:51,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:31:51" (1/1) ... [2022-11-20 20:31:51,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:31:51" (1/1) ... [2022-11-20 20:31:52,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:31:51" (1/1) ... [2022-11-20 20:31:52,009 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:31:51" (1/1) ... [2022-11-20 20:31:52,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:31:51" (1/1) ... [2022-11-20 20:31:52,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:31:52,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:31:52,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:31:52,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:31:52,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:31:51" (1/1) ... [2022-11-20 20:31:52,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:31:52,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:31:52,089 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:31:52,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:31:52,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:31:52,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:31:52,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:31:52,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:31:52,329 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:31:52,332 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:31:53,769 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:31:54,159 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:31:54,161 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:31:54,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:31:54 BoogieIcfgContainer [2022-11-20 20:31:54,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:31:54,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:31:54,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:31:54,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:31:54,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:31:51" (1/3) ... [2022-11-20 20:31:54,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36dcf08e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:31:54, skipping insertion in model container [2022-11-20 20:31:54,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:31:51" (2/3) ... [2022-11-20 20:31:54,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36dcf08e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:31:54, skipping insertion in model container [2022-11-20 20:31:54,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:31:54" (3/3) ... [2022-11-20 20:31:54,185 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label22.c [2022-11-20 20:31:54,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:31:54,208 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:31:54,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:31:54,293 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;@6f3d0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:31:54,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:31:54,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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) [2022-11-20 20:31:54,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 20:31:54,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:31:54,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:31:54,315 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:31:54,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:31:54,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1243321523, now seen corresponding path program 1 times [2022-11-20 20:31:54,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:31:54,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108675600] [2022-11-20 20:31:54,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:31:54,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:31:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:31:55,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:31:55,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:31:55,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108675600] [2022-11-20 20:31:55,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108675600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:31:55,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:31:55,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:31:55,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267881311] [2022-11-20 20:31:55,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:31:55,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:31:55,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:31:55,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:31:55,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:31:55,115 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2022-11-20 20:31:55,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:31:55,794 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2022-11-20 20:31:55,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:31:55,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 80 [2022-11-20 20:31:55,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:31:55,810 INFO L225 Difference]: With dead ends: 251 [2022-11-20 20:31:55,811 INFO L226 Difference]: Without dead ends: 163 [2022-11-20 20:31:55,814 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 [2022-11-20 20:31:55,819 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:31:55,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 65 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:31:55,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-20 20:31:55,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-11-20 20:31:55,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 162 states have internal predecessors, (253), 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) [2022-11-20 20:31:55,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2022-11-20 20:31:55,877 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2022-11-20 20:31:55,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:31:55,878 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2022-11-20 20:31:55,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2022-11-20 20:31:55,879 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2022-11-20 20:31:55,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 20:31:55,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:31:55,882 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:31:55,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:31:55,883 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:31:55,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:31:55,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1692950408, now seen corresponding path program 1 times [2022-11-20 20:31:55,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:31:55,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301693459] [2022-11-20 20:31:55,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:31:55,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:31:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:31:56,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:31:56,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:31:56,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301693459] [2022-11-20 20:31:56,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301693459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:31:56,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:31:56,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:31:56,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661034200] [2022-11-20 20:31:56,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:31:56,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:31:56,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:31:56,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:31:56,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:31:56,146 INFO L87 Difference]: Start difference. First operand 163 states and 253 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) [2022-11-20 20:31:56,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:31:56,754 INFO L93 Difference]: Finished difference Result 405 states and 661 transitions. [2022-11-20 20:31:56,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:31:56,755 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 85 [2022-11-20 20:31:56,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:31:56,758 INFO L225 Difference]: With dead ends: 405 [2022-11-20 20:31:56,759 INFO L226 Difference]: Without dead ends: 243 [2022-11-20 20:31:56,760 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 [2022-11-20 20:31:56,762 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:31:56,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 130 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:31:56,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-20 20:31:56,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2022-11-20 20:31:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 242 states have internal predecessors, (358), 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) [2022-11-20 20:31:56,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 358 transitions. [2022-11-20 20:31:56,784 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 358 transitions. Word has length 85 [2022-11-20 20:31:56,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:31:56,785 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 358 transitions. [2022-11-20 20:31:56,786 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) [2022-11-20 20:31:56,786 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 358 transitions. [2022-11-20 20:31:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-20 20:31:56,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:31:56,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:31:56,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:31:56,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:31:56,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:31:56,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1724802161, now seen corresponding path program 1 times [2022-11-20 20:31:56,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:31:56,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498233017] [2022-11-20 20:31:56,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:31:56,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:31:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:31:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:31:56,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:31:56,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498233017] [2022-11-20 20:31:56,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498233017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:31:56,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:31:56,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:31:56,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561836036] [2022-11-20 20:31:56,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:31:56,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:31:56,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:31:56,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:31:56,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:31:56,930 INFO L87 Difference]: Start difference. First operand 243 states and 358 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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) [2022-11-20 20:31:57,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:31:57,395 INFO L93 Difference]: Finished difference Result 725 states and 1071 transitions. [2022-11-20 20:31:57,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:31:57,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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 95 [2022-11-20 20:31:57,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:31:57,399 INFO L225 Difference]: With dead ends: 725 [2022-11-20 20:31:57,399 INFO L226 Difference]: Without dead ends: 483 [2022-11-20 20:31:57,400 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 [2022-11-20 20:31:57,402 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 106 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:31:57,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 28 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:31:57,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-20 20:31:57,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2022-11-20 20:31:57,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.3983402489626555) internal successors, (674), 482 states have internal predecessors, (674), 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) [2022-11-20 20:31:57,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 674 transitions. [2022-11-20 20:31:57,432 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 674 transitions. Word has length 95 [2022-11-20 20:31:57,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:31:57,432 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 674 transitions. [2022-11-20 20:31:57,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 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) [2022-11-20 20:31:57,433 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 674 transitions. [2022-11-20 20:31:57,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-20 20:31:57,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:31:57,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:31:57,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:31:57,438 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:31:57,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:31:57,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1929400592, now seen corresponding path program 1 times [2022-11-20 20:31:57,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:31:57,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880119614] [2022-11-20 20:31:57,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:31:57,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:31:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:31:57,715 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:31:57,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:31:57,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880119614] [2022-11-20 20:31:57,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880119614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:31:57,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:31:57,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:31:57,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3937577] [2022-11-20 20:31:57,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:31:57,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:31:57,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:31:57,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:31:57,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:31:57,724 INFO L87 Difference]: Start difference. First operand 483 states and 674 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2022-11-20 20:31:58,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:31:58,211 INFO L93 Difference]: Finished difference Result 1125 states and 1634 transitions. [2022-11-20 20:31:58,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:31:58,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 110 [2022-11-20 20:31:58,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:31:58,215 INFO L225 Difference]: With dead ends: 1125 [2022-11-20 20:31:58,215 INFO L226 Difference]: Without dead ends: 643 [2022-11-20 20:31:58,216 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 [2022-11-20 20:31:58,218 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 16 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:31:58,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 117 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:31:58,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-11-20 20:31:58,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2022-11-20 20:31:58,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.4236760124610592) internal successors, (914), 642 states have internal predecessors, (914), 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) [2022-11-20 20:31:58,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 914 transitions. [2022-11-20 20:31:58,275 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 914 transitions. Word has length 110 [2022-11-20 20:31:58,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:31:58,276 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 914 transitions. [2022-11-20 20:31:58,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2022-11-20 20:31:58,277 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 914 transitions. [2022-11-20 20:31:58,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 20:31:58,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:31:58,292 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:31:58,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:31:58,293 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:31:58,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:31:58,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1997907039, now seen corresponding path program 1 times [2022-11-20 20:31:58,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:31:58,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910212796] [2022-11-20 20:31:58,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:31:58,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:31:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:31:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:31:58,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:31:58,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910212796] [2022-11-20 20:31:58,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910212796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:31:58,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:31:58,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:31:58,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443985938] [2022-11-20 20:31:58,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:31:58,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:31:58,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:31:58,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:31:58,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:31:58,471 INFO L87 Difference]: Start difference. First operand 643 states and 914 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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) [2022-11-20 20:31:58,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:31:58,703 INFO L93 Difference]: Finished difference Result 1285 states and 1827 transitions. [2022-11-20 20:31:58,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:31:58,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 113 [2022-11-20 20:31:58,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:31:58,707 INFO L225 Difference]: With dead ends: 1285 [2022-11-20 20:31:58,707 INFO L226 Difference]: Without dead ends: 643 [2022-11-20 20:31:58,708 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 [2022-11-20 20:31:58,710 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 117 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:31:58,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 4 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:31:58,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-11-20 20:31:58,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2022-11-20 20:31:58,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.3457943925233644) internal successors, (864), 642 states have internal predecessors, (864), 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) [2022-11-20 20:31:58,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 864 transitions. [2022-11-20 20:31:58,730 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 864 transitions. Word has length 113 [2022-11-20 20:31:58,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:31:58,730 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 864 transitions. [2022-11-20 20:31:58,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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) [2022-11-20 20:31:58,731 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 864 transitions. [2022-11-20 20:31:58,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-20 20:31:58,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:31:58,733 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 20:31:58,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:31:58,734 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:31:58,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:31:58,735 INFO L85 PathProgramCache]: Analyzing trace with hash 342262358, now seen corresponding path program 1 times [2022-11-20 20:31:58,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:31:58,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273142409] [2022-11-20 20:31:58,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:31:58,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:31:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:31:58,909 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:31:58,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:31:58,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273142409] [2022-11-20 20:31:58,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273142409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:31:58,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:31:58,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:31:58,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489218026] [2022-11-20 20:31:58,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:31:58,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:31:58,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:31:58,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:31:58,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:31:58,913 INFO L87 Difference]: Start difference. First operand 643 states and 864 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2022-11-20 20:31:59,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:31:59,295 INFO L93 Difference]: Finished difference Result 1765 states and 2332 transitions. [2022-11-20 20:31:59,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:31:59,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 117 [2022-11-20 20:31:59,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:31:59,301 INFO L225 Difference]: With dead ends: 1765 [2022-11-20 20:31:59,302 INFO L226 Difference]: Without dead ends: 1123 [2022-11-20 20:31:59,303 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 [2022-11-20 20:31:59,308 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 71 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:31:59,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 55 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:31:59,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-11-20 20:31:59,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 963. [2022-11-20 20:31:59,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.2983367983367984) internal successors, (1249), 962 states have internal predecessors, (1249), 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) [2022-11-20 20:31:59,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1249 transitions. [2022-11-20 20:31:59,339 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1249 transitions. Word has length 117 [2022-11-20 20:31:59,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:31:59,340 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1249 transitions. [2022-11-20 20:31:59,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2022-11-20 20:31:59,340 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1249 transitions. [2022-11-20 20:31:59,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 20:31:59,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:31:59,343 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:31:59,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:31:59,344 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:31:59,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:31:59,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1523205858, now seen corresponding path program 1 times [2022-11-20 20:31:59,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:31:59,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112696661] [2022-11-20 20:31:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:31:59,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:31:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:31:59,491 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 20:31:59,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:31:59,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112696661] [2022-11-20 20:31:59,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112696661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:31:59,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:31:59,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:31:59,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106598539] [2022-11-20 20:31:59,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:31:59,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:31:59,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:31:59,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:31:59,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:31:59,496 INFO L87 Difference]: Start difference. First operand 963 states and 1249 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2022-11-20 20:31:59,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:31:59,863 INFO L93 Difference]: Finished difference Result 2085 states and 2682 transitions. [2022-11-20 20:31:59,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:31:59,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 124 [2022-11-20 20:31:59,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:31:59,869 INFO L225 Difference]: With dead ends: 2085 [2022-11-20 20:31:59,869 INFO L226 Difference]: Without dead ends: 963 [2022-11-20 20:31:59,871 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 [2022-11-20 20:31:59,875 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 76 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:31:59,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 16 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:31:59,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-20 20:31:59,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 883. [2022-11-20 20:31:59,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.1473922902494331) internal successors, (1012), 882 states have internal predecessors, (1012), 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) [2022-11-20 20:31:59,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1012 transitions. [2022-11-20 20:31:59,904 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1012 transitions. Word has length 124 [2022-11-20 20:31:59,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:31:59,905 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1012 transitions. [2022-11-20 20:31:59,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2022-11-20 20:31:59,905 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1012 transitions. [2022-11-20 20:31:59,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 20:31:59,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:31:59,908 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:31:59,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 20:31:59,908 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:31:59,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:31:59,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1982700396, now seen corresponding path program 1 times [2022-11-20 20:31:59,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:31:59,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297716391] [2022-11-20 20:31:59,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:31:59,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:31:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:32:00,384 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 20:32:00,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:32:00,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297716391] [2022-11-20 20:32:00,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297716391] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:32:00,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408495972] [2022-11-20 20:32:00,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:32:00,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:32:00,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:32:00,390 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:32:00,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:32:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:32:00,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:32:00,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:32:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-20 20:32:00,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:32:00,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408495972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:32:00,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:32:00,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-20 20:32:00,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824395438] [2022-11-20 20:32:00,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:32:00,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:32:00,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:32:00,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:32:00,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:32:00,956 INFO L87 Difference]: Start difference. First operand 883 states and 1012 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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) [2022-11-20 20:32:01,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:32:01,333 INFO L93 Difference]: Finished difference Result 963 states and 1096 transitions. [2022-11-20 20:32:01,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:32:01,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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 128 [2022-11-20 20:32:01,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:32:01,335 INFO L225 Difference]: With dead ends: 963 [2022-11-20 20:32:01,335 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 20:32:01,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:32:01,337 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:32:01,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 12 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:32:01,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 20:32:01,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 20:32:01,343 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) [2022-11-20 20:32:01,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 20:32:01,344 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 128 [2022-11-20 20:32:01,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:32:01,345 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 20:32:01,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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) [2022-11-20 20:32:01,345 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 20:32:01,345 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 20:32:01,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:32:01,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:32:01,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 20:32:01,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 20:32:01,894 INFO L899 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2022-11-20 20:32:01,894 INFO L899 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2022-11-20 20:32:01,894 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2022-11-20 20:32:01,895 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2022-11-20 20:32:01,895 INFO L899 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2022-11-20 20:32:01,895 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2022-11-20 20:32:01,895 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2022-11-20 20:32:01,895 INFO L899 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2022-11-20 20:32:01,895 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2022-11-20 20:32:01,895 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2022-11-20 20:32:01,896 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2022-11-20 20:32:01,896 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2022-11-20 20:32:01,896 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2022-11-20 20:32:01,896 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2022-11-20 20:32:01,896 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2022-11-20 20:32:01,896 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2022-11-20 20:32:01,897 INFO L899 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2022-11-20 20:32:01,897 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2022-11-20 20:32:01,897 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2022-11-20 20:32:01,897 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2022-11-20 20:32:01,897 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2022-11-20 20:32:01,897 INFO L899 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2022-11-20 20:32:01,897 INFO L899 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2022-11-20 20:32:01,898 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2022-11-20 20:32:01,898 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2022-11-20 20:32:01,902 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2022-11-20 20:32:01,902 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 20:32:01,902 INFO L899 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2022-11-20 20:32:01,902 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2022-11-20 20:32:01,903 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2022-11-20 20:32:01,903 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2022-11-20 20:32:01,903 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2022-11-20 20:32:01,903 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2022-11-20 20:32:01,903 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2022-11-20 20:32:01,903 INFO L899 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2022-11-20 20:32:01,903 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2022-11-20 20:32:01,904 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 473) no Hoare annotation was computed. [2022-11-20 20:32:01,904 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2022-11-20 20:32:01,904 INFO L899 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2022-11-20 20:32:01,904 INFO L899 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2022-11-20 20:32:01,904 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2022-11-20 20:32:01,904 INFO L899 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2022-11-20 20:32:01,905 INFO L899 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2022-11-20 20:32:01,905 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2022-11-20 20:32:01,905 INFO L899 garLoopResultBuilder]: For program point L469-1(lines 39 608) no Hoare annotation was computed. [2022-11-20 20:32:01,905 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2022-11-20 20:32:01,905 INFO L899 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2022-11-20 20:32:01,905 INFO L899 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2022-11-20 20:32:01,905 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2022-11-20 20:32:01,905 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2022-11-20 20:32:01,906 INFO L899 garLoopResultBuilder]: For program point L472-1(lines 39 608) no Hoare annotation was computed. [2022-11-20 20:32:01,906 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2022-11-20 20:32:01,906 INFO L899 garLoopResultBuilder]: For program point L473(line 473) no Hoare annotation was computed. [2022-11-20 20:32:01,907 INFO L899 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2022-11-20 20:32:01,907 INFO L899 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2022-11-20 20:32:01,907 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2022-11-20 20:32:01,907 INFO L895 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse3 (= ~a19~0 1)) (.cse2 (<= ~a28~0 7)) (.cse0 (<= 8 ~a17~0)) (.cse1 (<= ~a17~0 8)) (.cse4 (<= ~a28~0 10))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3) (and .cse1 .cse3 .cse2) (and (<= 9 ~a28~0) .cse1 .cse4) (and .cse0 .cse1 .cse4 (not (= ~a25~0 1))))) [2022-11-20 20:32:01,908 INFO L899 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2022-11-20 20:32:01,909 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2022-11-20 20:32:01,909 INFO L902 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2022-11-20 20:32:01,909 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2022-11-20 20:32:01,909 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2022-11-20 20:32:01,909 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2022-11-20 20:32:01,910 INFO L899 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2022-11-20 20:32:01,910 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2022-11-20 20:32:01,910 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 20:32:01,910 INFO L899 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2022-11-20 20:32:01,910 INFO L899 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2022-11-20 20:32:01,911 INFO L895 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse3 (= ~a19~0 1)) (.cse2 (<= ~a28~0 7)) (.cse0 (<= 8 ~a17~0)) (.cse1 (<= ~a17~0 8)) (.cse4 (<= ~a28~0 10))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse3) (and .cse1 .cse3 .cse2) (and (<= 9 ~a28~0) .cse1 .cse4) (and .cse0 .cse1 .cse4 (not (= ~a25~0 1))))) [2022-11-20 20:32:01,912 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2022-11-20 20:32:01,913 INFO L899 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2022-11-20 20:32:01,913 INFO L899 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2022-11-20 20:32:01,914 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2022-11-20 20:32:01,914 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2022-11-20 20:32:01,914 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2022-11-20 20:32:01,914 INFO L899 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2022-11-20 20:32:01,914 INFO L899 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2022-11-20 20:32:01,914 INFO L899 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2022-11-20 20:32:01,914 INFO L899 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2022-11-20 20:32:01,915 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2022-11-20 20:32:01,915 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2022-11-20 20:32:01,915 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2022-11-20 20:32:01,915 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2022-11-20 20:32:01,915 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2022-11-20 20:32:01,915 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2022-11-20 20:32:01,919 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:32:01,921 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:32:01,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:32:01 BoogieIcfgContainer [2022-11-20 20:32:01,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:32:01,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:32:01,963 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:32:01,963 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:32:01,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:31:54" (3/4) ... [2022-11-20 20:32:01,967 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 20:32:02,001 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2022-11-20 20:32:02,002 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-20 20:32:02,004 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-20 20:32:02,008 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 20:32:02,157 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:32:02,157 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:32:02,158 INFO L158 Benchmark]: Toolchain (without parser) took 11106.50ms. Allocated memory was 134.2MB in the beginning and 262.1MB in the end (delta: 127.9MB). Free memory was 88.9MB in the beginning and 154.7MB in the end (delta: -65.7MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB. [2022-11-20 20:32:02,158 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 134.2MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:32:02,159 INFO L158 Benchmark]: CACSL2BoogieTranslator took 721.15ms. Allocated memory is still 134.2MB. Free memory was 88.9MB in the beginning and 62.1MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-20 20:32:02,159 INFO L158 Benchmark]: Boogie Procedure Inliner took 141.94ms. Allocated memory is still 134.2MB. Free memory was 62.1MB in the beginning and 56.4MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 20:32:02,160 INFO L158 Benchmark]: Boogie Preprocessor took 120.77ms. Allocated memory is still 134.2MB. Free memory was 56.4MB in the beginning and 52.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 20:32:02,160 INFO L158 Benchmark]: RCFGBuilder took 2128.16ms. Allocated memory was 134.2MB in the beginning and 180.4MB in the end (delta: 46.1MB). Free memory was 52.2MB in the beginning and 101.8MB in the end (delta: -49.7MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. [2022-11-20 20:32:02,161 INFO L158 Benchmark]: TraceAbstraction took 7789.90ms. Allocated memory was 180.4MB in the beginning and 262.1MB in the end (delta: 81.8MB). Free memory was 101.8MB in the beginning and 166.2MB in the end (delta: -64.4MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2022-11-20 20:32:02,161 INFO L158 Benchmark]: Witness Printer took 194.76ms. Allocated memory is still 262.1MB. Free memory was 166.2MB in the beginning and 154.7MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 20:32:02,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 134.2MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 721.15ms. Allocated memory is still 134.2MB. Free memory was 88.9MB in the beginning and 62.1MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 141.94ms. Allocated memory is still 134.2MB. Free memory was 62.1MB in the beginning and 56.4MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 120.77ms. Allocated memory is still 134.2MB. Free memory was 56.4MB in the beginning and 52.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2128.16ms. Allocated memory was 134.2MB in the beginning and 180.4MB in the end (delta: 46.1MB). Free memory was 52.2MB in the beginning and 101.8MB in the end (delta: -49.7MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7789.90ms. Allocated memory was 180.4MB in the beginning and 262.1MB in the end (delta: 81.8MB). Free memory was 101.8MB in the beginning and 166.2MB in the end (delta: -64.4MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * Witness Printer took 194.76ms. Allocated memory is still 262.1MB. Free memory was 166.2MB in the beginning and 154.7MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. 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: 473]: 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, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.7s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 429 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 429 mSDsluCounter, 427 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 488 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1719 IncrementalHoareTripleChecker+Invalid, 2207 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 488 mSolverCounterUnsat, 392 mSDtfsCounter, 1719 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=963occurred in iteration=6, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 240 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 33 NumberOfFragments, 111 HoareAnnotationTreeSize, 3 FomulaSimplifications, 36 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 418 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 980 NumberOfCodeBlocks, 980 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 971 ConstructedInterpolants, 0 QuantifiedInterpolants, 2317 SizeOfPredicates, 0 NumberOfNonLiveVariables, 297 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 364/372 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: 616]: Loop Invariant Derived loop invariant: (((((8 <= a17 && a17 <= 8) && a28 <= 7) || ((8 <= a17 && a17 <= 8) && a19 == 1)) || ((a17 <= 8 && a19 == 1) && a28 <= 7)) || ((9 <= a28 && a17 <= 8) && a28 <= 10)) || (((8 <= a17 && a17 <= 8) && a28 <= 10) && !(a25 == 1)) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((8 <= a17 && a17 <= 8) && a28 <= 7) || ((8 <= a17 && a17 <= 8) && a19 == 1)) || ((a17 <= 8 && a19 == 1) && a28 <= 7)) || ((9 <= a28 && a17 <= 8) && a28 <= 10)) || (((8 <= a17 && a17 <= 8) && a28 <= 10) && !(a25 == 1)) RESULT: Ultimate proved your program to be correct! [2022-11-20 20:32:02,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3673f45a-fc40-4bd2-8d5a-fdcda75123ab/bin/utaipan-6cKwYrpEi9/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