./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label48.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG --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 1479ddd90ec2fcde77d063083da596ee818d8098bb47b0581d7cfb4606042d51 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:47:05,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:47:05,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:47:05,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:47:05,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:47:05,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:47:05,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:47:05,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:47:05,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:47:05,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:47:05,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:47:05,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:47:05,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:47:05,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:47:05,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:47:05,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:47:05,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:47:05,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:47:05,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:47:05,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:47:05,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:47:05,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:47:05,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:47:05,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:47:05,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:47:05,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:47:05,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:47:05,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:47:05,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:47:05,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:47:05,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:47:05,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:47:05,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:47:05,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:47:05,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:47:05,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:47:05,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:47:05,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:47:05,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:47:05,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:47:05,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:47:05,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:47:05,943 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:47:05,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:47:05,944 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:47:05,944 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:47:05,945 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:47:05,945 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:47:05,945 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:47:05,945 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:47:05,945 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:47:05,945 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:47:05,946 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:47:05,946 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:47:05,947 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:47:05,947 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:47:05,948 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:47:05,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:47:05,949 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:47:05,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:47:05,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:47:05,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:47:05,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:47:05,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:47:05,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:47:05,950 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:47:05,951 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:47:05,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:47:05,951 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:47:05,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:47:05,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:47:05,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:47:05,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:47:05,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:47:05,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:47:05,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:47:05,953 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:47:05,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:47:05,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:47:05,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:47:05,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:47:05,954 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1479ddd90ec2fcde77d063083da596ee818d8098bb47b0581d7cfb4606042d51 [2021-10-29 04:47:06,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:47:06,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:47:06,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:47:06,219 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:47:06,219 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:47:06,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/eca-rers2012/Problem01_label48.c [2021-10-29 04:47:06,276 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/data/ec01acbba/8a65aff05f7f4e60920eefd72a02399b/FLAG66ca58028 [2021-10-29 04:47:06,862 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:47:06,863 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/sv-benchmarks/c/eca-rers2012/Problem01_label48.c [2021-10-29 04:47:06,893 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/data/ec01acbba/8a65aff05f7f4e60920eefd72a02399b/FLAG66ca58028 [2021-10-29 04:47:07,126 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/data/ec01acbba/8a65aff05f7f4e60920eefd72a02399b [2021-10-29 04:47:07,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:47:07,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:47:07,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:47:07,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:47:07,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:47:07,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:47:07" (1/1) ... [2021-10-29 04:47:07,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac9af1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:07, skipping insertion in model container [2021-10-29 04:47:07,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:47:07" (1/1) ... [2021-10-29 04:47:07,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:47:07,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:47:07,660 WARN L228 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_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/sv-benchmarks/c/eca-rers2012/Problem01_label48.c[20593,20606] [2021-10-29 04:47:07,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:47:07,685 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:47:07,787 WARN L228 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_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/sv-benchmarks/c/eca-rers2012/Problem01_label48.c[20593,20606] [2021-10-29 04:47:07,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:47:07,810 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:47:07,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:07 WrapperNode [2021-10-29 04:47:07,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:47:07,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:47:07,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:47:07,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:47:07,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:07" (1/1) ... [2021-10-29 04:47:07,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:07" (1/1) ... [2021-10-29 04:47:07,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:47:07,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:47:07,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:47:07,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:47:07,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:07" (1/1) ... [2021-10-29 04:47:07,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:07" (1/1) ... [2021-10-29 04:47:07,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:07" (1/1) ... [2021-10-29 04:47:07,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:07" (1/1) ... [2021-10-29 04:47:07,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:07" (1/1) ... [2021-10-29 04:47:07,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:07" (1/1) ... [2021-10-29 04:47:07,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:07" (1/1) ... [2021-10-29 04:47:07,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:47:07,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:47:07,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:47:07,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:47:07,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:07" (1/1) ... [2021-10-29 04:47:07,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:47:07,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:47:07,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:47:08,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:47:08,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:47:08,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:47:08,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:47:08,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:47:09,739 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:47:09,740 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-29 04:47:09,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:47:09 BoogieIcfgContainer [2021-10-29 04:47:09,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:47:09,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:47:09,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:47:09,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:47:09,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:47:07" (1/3) ... [2021-10-29 04:47:09,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f812688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:47:09, skipping insertion in model container [2021-10-29 04:47:09,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:47:07" (2/3) ... [2021-10-29 04:47:09,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f812688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:47:09, skipping insertion in model container [2021-10-29 04:47:09,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:47:09" (3/3) ... [2021-10-29 04:47:09,757 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label48.c [2021-10-29 04:47:09,763 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:47:09,764 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:47:09,826 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:47:09,834 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:47:09,835 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:47:09,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:09,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-29 04:47:09,863 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:09,864 INFO L513 BasicCegarLoop]: 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] [2021-10-29 04:47:09,864 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:47:09,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:09,870 INFO L85 PathProgramCache]: Analyzing trace with hash -104647992, now seen corresponding path program 1 times [2021-10-29 04:47:09,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:47:09,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549188666] [2021-10-29 04:47:09,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:09,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:47:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:10,234 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:47:10,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549188666] [2021-10-29 04:47:10,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549188666] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:47:10,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:47:10,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:47:10,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900118177] [2021-10-29 04:47:10,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:47:10,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:47:10,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:47:10,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:47:10,264 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:10,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:47:10,727 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-29 04:47:10,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:47:10,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-10-29 04:47:10,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:47:10,747 INFO L225 Difference]: With dead ends: 224 [2021-10-29 04:47:10,748 INFO L226 Difference]: Without dead ends: 145 [2021-10-29 04:47:10,752 INFO L786 BasicCegarLoop]: 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 [2021-10-29 04:47:10,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-29 04:47:10,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-29 04:47:10,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:10,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-10-29 04:47:10,808 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-10-29 04:47:10,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:47:10,809 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-10-29 04:47:10,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:10,810 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-10-29 04:47:10,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-29 04:47:10,814 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:10,814 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:47:10,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:47:10,815 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:47:10,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:10,815 INFO L85 PathProgramCache]: Analyzing trace with hash -601801573, now seen corresponding path program 1 times [2021-10-29 04:47:10,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:47:10,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989003445] [2021-10-29 04:47:10,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:10,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:47:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:10,914 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:10,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:47:10,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989003445] [2021-10-29 04:47:10,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989003445] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:47:10,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:47:10,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:47:10,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875346421] [2021-10-29 04:47:10,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:47:10,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:47:10,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:47:10,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:47:10,919 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:11,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:47:11,313 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2021-10-29 04:47:11,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:47:11,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-10-29 04:47:11,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:47:11,317 INFO L225 Difference]: With dead ends: 431 [2021-10-29 04:47:11,317 INFO L226 Difference]: Without dead ends: 287 [2021-10-29 04:47:11,319 INFO L786 BasicCegarLoop]: 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 [2021-10-29 04:47:11,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-29 04:47:11,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-29 04:47:11,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6363636363636365) internal successors, (468), 286 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:11,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 468 transitions. [2021-10-29 04:47:11,344 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 468 transitions. Word has length 77 [2021-10-29 04:47:11,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:47:11,345 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 468 transitions. [2021-10-29 04:47:11,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:11,345 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 468 transitions. [2021-10-29 04:47:11,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-29 04:47:11,349 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:11,349 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:47:11,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 04:47:11,350 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:47:11,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:11,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1164135143, now seen corresponding path program 1 times [2021-10-29 04:47:11,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:47:11,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816641887] [2021-10-29 04:47:11,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:11,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:47:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:11,541 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:47:11,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816641887] [2021-10-29 04:47:11,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816641887] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:47:11,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:47:11,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:47:11,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988171562] [2021-10-29 04:47:11,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:47:11,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:47:11,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:47:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:47:11,545 INFO L87 Difference]: Start difference. First operand 287 states and 468 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:12,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:47:12,083 INFO L93 Difference]: Finished difference Result 784 states and 1255 transitions. [2021-10-29 04:47:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:47:12,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-10-29 04:47:12,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:47:12,090 INFO L225 Difference]: With dead ends: 784 [2021-10-29 04:47:12,091 INFO L226 Difference]: Without dead ends: 429 [2021-10-29 04:47:12,096 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:47:12,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-29 04:47:12,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-10-29 04:47:12,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.3014018691588785) internal successors, (557), 428 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:12,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 557 transitions. [2021-10-29 04:47:12,143 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 557 transitions. Word has length 78 [2021-10-29 04:47:12,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:47:12,144 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 557 transitions. [2021-10-29 04:47:12,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:12,144 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 557 transitions. [2021-10-29 04:47:12,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-29 04:47:12,153 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:12,154 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:47:12,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 04:47:12,155 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:47:12,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:12,156 INFO L85 PathProgramCache]: Analyzing trace with hash -771913106, now seen corresponding path program 1 times [2021-10-29 04:47:12,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:47:12,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777530424] [2021-10-29 04:47:12,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:12,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:47:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:12,288 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 04:47:12,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:47:12,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777530424] [2021-10-29 04:47:12,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777530424] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:47:12,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:47:12,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:47:12,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083239541] [2021-10-29 04:47:12,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:47:12,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:47:12,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:47:12,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:47:12,298 INFO L87 Difference]: Start difference. First operand 429 states and 557 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:12,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:47:12,608 INFO L93 Difference]: Finished difference Result 857 states and 1138 transitions. [2021-10-29 04:47:12,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:47:12,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-10-29 04:47:12,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:47:12,613 INFO L225 Difference]: With dead ends: 857 [2021-10-29 04:47:12,613 INFO L226 Difference]: Without dead ends: 500 [2021-10-29 04:47:12,617 INFO L786 BasicCegarLoop]: 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 [2021-10-29 04:47:12,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-29 04:47:12,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2021-10-29 04:47:12,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.282565130260521) internal successors, (640), 499 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:12,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 640 transitions. [2021-10-29 04:47:12,640 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 640 transitions. Word has length 83 [2021-10-29 04:47:12,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:47:12,640 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 640 transitions. [2021-10-29 04:47:12,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:12,641 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 640 transitions. [2021-10-29 04:47:12,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-10-29 04:47:12,643 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:12,644 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:47:12,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 04:47:12,645 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:47:12,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:12,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1248264118, now seen corresponding path program 1 times [2021-10-29 04:47:12,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:47:12,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720712471] [2021-10-29 04:47:12,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:12,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:47:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:12,693 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-29 04:47:12,694 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:47:12,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720712471] [2021-10-29 04:47:12,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720712471] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:47:12,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:47:12,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:47:12,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539867240] [2021-10-29 04:47:12,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:47:12,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:47:12,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:47:12,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:47:12,697 INFO L87 Difference]: Start difference. First operand 500 states and 640 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:13,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:47:13,040 INFO L93 Difference]: Finished difference Result 1283 states and 1651 transitions. [2021-10-29 04:47:13,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:47:13,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-10-29 04:47:13,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:47:13,046 INFO L225 Difference]: With dead ends: 1283 [2021-10-29 04:47:13,046 INFO L226 Difference]: Without dead ends: 855 [2021-10-29 04:47:13,047 INFO L786 BasicCegarLoop]: 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 [2021-10-29 04:47:13,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-29 04:47:13,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 642. [2021-10-29 04:47:13,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.2776911076443058) internal successors, (819), 641 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 819 transitions. [2021-10-29 04:47:13,074 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 819 transitions. Word has length 92 [2021-10-29 04:47:13,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:47:13,074 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 819 transitions. [2021-10-29 04:47:13,074 INFO L471 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) [2021-10-29 04:47:13,075 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 819 transitions. [2021-10-29 04:47:13,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-29 04:47:13,077 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:13,077 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:47:13,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 04:47:13,077 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:47:13,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:13,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1552485061, now seen corresponding path program 1 times [2021-10-29 04:47:13,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:47:13,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362266001] [2021-10-29 04:47:13,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:13,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:47:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 04:47:13,134 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:47:13,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362266001] [2021-10-29 04:47:13,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362266001] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:47:13,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:47:13,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:47:13,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741206621] [2021-10-29 04:47:13,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:47:13,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:47:13,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:47:13,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:47:13,137 INFO L87 Difference]: Start difference. First operand 642 states and 819 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:13,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:47:13,437 INFO L93 Difference]: Finished difference Result 1425 states and 1827 transitions. [2021-10-29 04:47:13,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:47:13,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-10-29 04:47:13,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:47:13,444 INFO L225 Difference]: With dead ends: 1425 [2021-10-29 04:47:13,444 INFO L226 Difference]: Without dead ends: 855 [2021-10-29 04:47:13,447 INFO L786 BasicCegarLoop]: 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 [2021-10-29 04:47:13,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-29 04:47:13,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2021-10-29 04:47:13,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.260536398467433) internal successors, (987), 783 states have internal predecessors, (987), 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) [2021-10-29 04:47:13,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 987 transitions. [2021-10-29 04:47:13,481 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 987 transitions. Word has length 98 [2021-10-29 04:47:13,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:47:13,481 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 987 transitions. [2021-10-29 04:47:13,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:47:13,483 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 987 transitions. [2021-10-29 04:47:13,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-29 04:47:13,485 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:13,486 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:47:13,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 04:47:13,486 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:47:13,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:13,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1595249176, now seen corresponding path program 1 times [2021-10-29 04:47:13,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:47:13,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091080474] [2021-10-29 04:47:13,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:13,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:47:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 04:47:13,580 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:47:13,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091080474] [2021-10-29 04:47:13,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091080474] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:47:13,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:47:13,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:47:13,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802844569] [2021-10-29 04:47:13,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:47:13,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:47:13,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:47:13,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:47:13,583 INFO L87 Difference]: Start difference. First operand 784 states and 987 transitions. Second operand has 4 states, 4 states have (on average 27.5) 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) [2021-10-29 04:47:14,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:47:14,090 INFO L93 Difference]: Finished difference Result 2064 states and 2680 transitions. [2021-10-29 04:47:14,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 04:47:14,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) 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 112 [2021-10-29 04:47:14,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:47:14,098 INFO L225 Difference]: With dead ends: 2064 [2021-10-29 04:47:14,098 INFO L226 Difference]: Without dead ends: 1210 [2021-10-29 04:47:14,100 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:47:14,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-29 04:47:14,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2021-10-29 04:47:14,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 1.2352389878163075) internal successors, (1318), 1067 states have internal predecessors, (1318), 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) [2021-10-29 04:47:14,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1318 transitions. [2021-10-29 04:47:14,132 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1318 transitions. Word has length 112 [2021-10-29 04:47:14,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:47:14,133 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1318 transitions. [2021-10-29 04:47:14,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) 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) [2021-10-29 04:47:14,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1318 transitions. [2021-10-29 04:47:14,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-29 04:47:14,136 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:14,136 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:47:14,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 04:47:14,137 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:47:14,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:14,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1599127067, now seen corresponding path program 1 times [2021-10-29 04:47:14,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:47:14,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839380612] [2021-10-29 04:47:14,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:14,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:47:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:14,210 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 04:47:14,210 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:47:14,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839380612] [2021-10-29 04:47:14,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839380612] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:47:14,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:47:14,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:47:14,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223460749] [2021-10-29 04:47:14,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:47:14,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:47:14,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:47:14,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:47:14,213 INFO L87 Difference]: Start difference. First operand 1068 states and 1318 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-10-29 04:47:14,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:47:14,477 INFO L93 Difference]: Finished difference Result 2206 states and 2737 transitions. [2021-10-29 04:47:14,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:47:14,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 118 [2021-10-29 04:47:14,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:47:14,485 INFO L225 Difference]: With dead ends: 2206 [2021-10-29 04:47:14,485 INFO L226 Difference]: Without dead ends: 1139 [2021-10-29 04:47:14,487 INFO L786 BasicCegarLoop]: 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 [2021-10-29 04:47:14,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-29 04:47:14,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1068. [2021-10-29 04:47:14,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 1.2408622305529522) internal successors, (1324), 1067 states have internal predecessors, (1324), 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) [2021-10-29 04:47:14,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1324 transitions. [2021-10-29 04:47:14,520 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1324 transitions. Word has length 118 [2021-10-29 04:47:14,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:47:14,521 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1324 transitions. [2021-10-29 04:47:14,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-10-29 04:47:14,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1324 transitions. [2021-10-29 04:47:14,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-29 04:47:14,524 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:14,524 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-29 04:47:14,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-29 04:47:14,525 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:47:14,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:14,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1232114440, now seen corresponding path program 1 times [2021-10-29 04:47:14,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:47:14,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996611553] [2021-10-29 04:47:14,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:14,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:47:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:14,643 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 60 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-29 04:47:14,643 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:47:14,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996611553] [2021-10-29 04:47:14,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996611553] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:47:14,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410100911] [2021-10-29 04:47:14,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:14,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:47:14,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:47:14,650 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:47:14,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 04:47:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:14,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:47:14,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:47:15,224 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-29 04:47:15,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:47:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-29 04:47:15,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410100911] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:47:15,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 04:47:15,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-29 04:47:15,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036224180] [2021-10-29 04:47:15,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:47:15,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:47:15,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:47:15,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:47:15,558 INFO L87 Difference]: Start difference. First operand 1068 states and 1324 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2021-10-29 04:47:15,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:47:15,831 INFO L93 Difference]: Finished difference Result 2348 states and 2877 transitions. [2021-10-29 04:47:15,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:47:15,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 132 [2021-10-29 04:47:15,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:47:15,838 INFO L225 Difference]: With dead ends: 2348 [2021-10-29 04:47:15,838 INFO L226 Difference]: Without dead ends: 1068 [2021-10-29 04:47:15,841 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 04:47:15,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-10-29 04:47:15,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2021-10-29 04:47:15,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.180722891566265) internal successors, (1176), 996 states have internal predecessors, (1176), 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) [2021-10-29 04:47:15,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1176 transitions. [2021-10-29 04:47:15,868 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1176 transitions. Word has length 132 [2021-10-29 04:47:15,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:47:15,869 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1176 transitions. [2021-10-29 04:47:15,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2021-10-29 04:47:15,870 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1176 transitions. [2021-10-29 04:47:15,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-10-29 04:47:15,873 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:47:15,873 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-29 04:47:15,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:47:16,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-29 04:47:16,092 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:47:16,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:47:16,093 INFO L85 PathProgramCache]: Analyzing trace with hash 454186822, now seen corresponding path program 1 times [2021-10-29 04:47:16,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:47:16,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285373868] [2021-10-29 04:47:16,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:16,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:47:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:16,188 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 109 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:47:16,188 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:47:16,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285373868] [2021-10-29 04:47:16,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285373868] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:47:16,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957433165] [2021-10-29 04:47:16,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:47:16,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:47:16,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:47:16,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:47:16,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 04:47:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:47:16,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 04:47:16,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:47:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-29 04:47:16,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:47:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-29 04:47:17,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957433165] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 04:47:17,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 04:47:17,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-29 04:47:17,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161530268] [2021-10-29 04:47:17,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:47:17,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:47:17,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:47:17,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:47:17,184 INFO L87 Difference]: Start difference. First operand 997 states and 1176 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2021-10-29 04:47:17,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:47:17,458 INFO L93 Difference]: Finished difference Result 1991 states and 2367 transitions. [2021-10-29 04:47:17,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:47:17,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 151 [2021-10-29 04:47:17,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:47:17,459 INFO L225 Difference]: With dead ends: 1991 [2021-10-29 04:47:17,459 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 04:47:17,462 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 299 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-29 04:47:17,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 04:47:17,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 04:47:17,463 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) [2021-10-29 04:47:17,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 04:47:17,463 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 151 [2021-10-29 04:47:17,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:47:17,463 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 04:47:17,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2021-10-29 04:47:17,464 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 04:47:17,464 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 04:47:17,467 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:47:17,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:47:17,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-29 04:47:17,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 04:47:17,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:47:17,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:47:17,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:47:18,050 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-29 04:47:18,050 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-29 04:47:18,050 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-29 04:47:18,050 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-29 04:47:18,050 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-29 04:47:18,050 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-29 04:47:18,050 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-29 04:47:18,050 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-29 04:47:18,050 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-29 04:47:18,051 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-29 04:47:18,051 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-29 04:47:18,051 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-29 04:47:18,051 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-29 04:47:18,051 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-29 04:47:18,051 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-29 04:47:18,051 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-29 04:47:18,051 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-29 04:47:18,051 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-29 04:47:18,051 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-29 04:47:18,052 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-29 04:47:18,052 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-29 04:47:18,052 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-29 04:47:18,052 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-29 04:47:18,052 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-29 04:47:18,052 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-29 04:47:18,052 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-29 04:47:18,052 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-29 04:47:18,052 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-29 04:47:18,052 INFO L857 garLoopResultBuilder]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2021-10-29 04:47:18,052 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-29 04:47:18,053 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-29 04:47:18,053 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-29 04:47:18,053 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-29 04:47:18,053 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-29 04:47:18,053 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-29 04:47:18,053 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-29 04:47:18,053 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-29 04:47:18,053 INFO L857 garLoopResultBuilder]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2021-10-29 04:47:18,053 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 04:47:18,053 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-29 04:47:18,053 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-29 04:47:18,054 INFO L857 garLoopResultBuilder]: For program point L549(line 549) no Hoare annotation was computed. [2021-10-29 04:47:18,054 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-29 04:47:18,054 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse5 (<= ~a8~0 13)) (.cse2 (<= 15 ~a8~0)) (.cse6 (<= ~a16~0 5)) (.cse7 (<= ~a17~0 0)) (.cse3 (= ~a12~0 8)) (.cse0 (= ~a21~0 1)) (.cse1 (= ~a17~0 1)) (.cse4 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse3 (<= 6 ~a16~0) .cse0 .cse1 .cse4) (and .cse5 .cse6) (and .cse5 .cse4) (and .cse7 .cse0 .cse2) (and .cse7 .cse0 .cse6) (and .cse7 .cse0 .cse4) (and .cse3 .cse0 .cse1 (<= ~a16~0 4) .cse4))) [2021-10-29 04:47:18,054 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-29 04:47:18,054 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-29 04:47:18,054 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-29 04:47:18,054 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-29 04:47:18,054 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-29 04:47:18,054 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-29 04:47:18,055 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-29 04:47:18,055 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 04:47:18,055 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-29 04:47:18,055 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-29 04:47:18,055 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-29 04:47:18,055 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-29 04:47:18,055 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-29 04:47:18,055 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-29 04:47:18,055 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-29 04:47:18,055 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-29 04:47:18,055 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-29 04:47:18,056 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-29 04:47:18,056 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-29 04:47:18,056 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-29 04:47:18,056 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-29 04:47:18,056 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-29 04:47:18,056 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-29 04:47:18,056 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse5 (<= ~a8~0 13)) (.cse2 (<= 15 ~a8~0)) (.cse6 (<= ~a16~0 5)) (.cse7 (<= ~a17~0 0)) (.cse3 (= ~a12~0 8)) (.cse0 (= ~a21~0 1)) (.cse1 (= ~a17~0 1)) (.cse4 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse3 (<= 6 ~a16~0) .cse0 .cse1 .cse4) (and .cse5 .cse6) (and .cse5 .cse4) (and .cse7 .cse0 .cse2) (and .cse7 .cse0 .cse6) (and .cse7 .cse0 .cse4) (and .cse3 .cse0 .cse1 (<= ~a16~0 4) .cse4))) [2021-10-29 04:47:18,056 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-29 04:47:18,056 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 549) no Hoare annotation was computed. [2021-10-29 04:47:18,057 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-29 04:47:18,057 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-29 04:47:18,057 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-29 04:47:18,057 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-29 04:47:18,057 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-29 04:47:18,057 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-29 04:47:18,059 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:47:18,060 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:47:18,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:47:18 BoogieIcfgContainer [2021-10-29 04:47:18,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:47:18,097 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:47:18,097 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:47:18,097 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:47:18,098 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:47:09" (3/4) ... [2021-10-29 04:47:18,100 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 04:47:18,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 108 nodes and edges [2021-10-29 04:47:18,130 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-29 04:47:18,132 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-29 04:47:18,133 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 04:47:18,283 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:47:18,283 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:47:18,285 INFO L168 Benchmark]: Toolchain (without parser) took 11153.91 ms. Allocated memory was 104.9 MB in the beginning and 251.7 MB in the end (delta: 146.8 MB). Free memory was 73.0 MB in the beginning and 157.0 MB in the end (delta: -84.0 MB). Peak memory consumption was 62.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:47:18,285 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 104.9 MB. Free memory is still 61.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:47:18,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.56 ms. Allocated memory was 104.9 MB in the beginning and 142.6 MB in the end (delta: 37.7 MB). Free memory was 73.0 MB in the beginning and 100.4 MB in the end (delta: -27.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:47:18,287 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.62 ms. Allocated memory is still 142.6 MB. Free memory was 100.4 MB in the beginning and 94.8 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:47:18,287 INFO L168 Benchmark]: Boogie Preprocessor took 59.34 ms. Allocated memory is still 142.6 MB. Free memory was 94.8 MB in the beginning and 90.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:47:18,287 INFO L168 Benchmark]: RCFGBuilder took 1801.34 ms. Allocated memory is still 142.6 MB. Free memory was 90.6 MB in the beginning and 93.5 MB in the end (delta: -2.9 MB). Peak memory consumption was 50.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:47:18,288 INFO L168 Benchmark]: TraceAbstraction took 8347.06 ms. Allocated memory was 142.6 MB in the beginning and 251.7 MB in the end (delta: 109.1 MB). Free memory was 92.4 MB in the beginning and 172.9 MB in the end (delta: -80.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:47:18,288 INFO L168 Benchmark]: Witness Printer took 186.56 ms. Allocated memory is still 251.7 MB. Free memory was 172.9 MB in the beginning and 157.0 MB in the end (delta: 15.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 04:47:18,291 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 104.9 MB. Free memory is still 61.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 674.56 ms. Allocated memory was 104.9 MB in the beginning and 142.6 MB in the end (delta: 37.7 MB). Free memory was 73.0 MB in the beginning and 100.4 MB in the end (delta: -27.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.62 ms. Allocated memory is still 142.6 MB. Free memory was 100.4 MB in the beginning and 94.8 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.34 ms. Allocated memory is still 142.6 MB. Free memory was 94.8 MB in the beginning and 90.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1801.34 ms. Allocated memory is still 142.6 MB. Free memory was 90.6 MB in the beginning and 93.5 MB in the end (delta: -2.9 MB). Peak memory consumption was 50.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8347.06 ms. Allocated memory was 142.6 MB in the beginning and 251.7 MB in the end (delta: 109.1 MB). Free memory was 92.4 MB in the beginning and 172.9 MB in the end (delta: -80.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. * Witness Printer took 186.56 ms. Allocated memory is still 251.7 MB. Free memory was 172.9 MB in the beginning and 157.0 MB in the end (delta: 15.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * 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: 549]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.2s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 563 SDtfs, 593 SDslu, 43 SDs, 0 SdLazy, 2272 SolverSat, 522 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 590 GetRequests, 571 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=7, InterpolantAutomatonStates: 32, 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, 10 MinimizatonAttempts, 568 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 175 HoareAnnotationTreeSize, 3 FomulaSimplifications, 900 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 138 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1295 NumberOfCodeBlocks, 1295 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1564 ConstructedInterpolants, 0 QuantifiedInterpolants, 4816 SizeOfPredicates, 0 NumberOfNonLiveVariables, 727 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 780/792 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((a21 == 1 && a17 == 1) && 15 <= a8) || ((((a12 == 8 && 6 <= a16) && a21 == 1) && a17 == 1) && a20 == 1)) || (a8 <= 13 && a16 <= 5)) || (a8 <= 13 && a20 == 1)) || ((a17 <= 0 && a21 == 1) && 15 <= a8)) || ((a17 <= 0 && a21 == 1) && a16 <= 5)) || ((a17 <= 0 && a21 == 1) && a20 == 1)) || ((((a12 == 8 && a21 == 1) && a17 == 1) && a16 <= 4) && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((a21 == 1 && a17 == 1) && 15 <= a8) || ((((a12 == 8 && 6 <= a16) && a21 == 1) && a17 == 1) && a20 == 1)) || (a8 <= 13 && a16 <= 5)) || (a8 <= 13 && a20 == 1)) || ((a17 <= 0 && a21 == 1) && 15 <= a8)) || ((a17 <= 0 && a21 == 1) && a16 <= 5)) || ((a17 <= 0 && a21 == 1) && a20 == 1)) || ((((a12 == 8 && a21 == 1) && a17 == 1) && a16 <= 4) && a20 == 1) RESULT: Ultimate proved your program to be correct! [2021-10-29 04:47:18,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40ef20b6-6f8e-4a53-b23a-e0eacf7825a0/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...