./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label23.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label23.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9f1cd2841a16dfe2f8fe839faac013546a2b72431aadffbb7fe449f6c6dcaf65 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:54:41,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:54:41,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:54:41,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:54:41,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:54:41,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:54:41,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:54:41,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:54:41,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:54:41,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:54:41,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:54:41,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:54:41,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:54:41,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:54:41,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:54:41,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:54:41,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:54:41,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:54:41,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:54:41,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:54:41,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:54:41,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:54:41,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:54:41,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:54:41,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:54:41,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:54:41,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:54:41,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:54:41,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:54:41,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:54:41,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:54:41,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:54:41,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:54:41,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:54:41,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:54:41,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:54:41,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:54:41,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:54:41,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:54:41,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:54:41,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:54:41,780 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:54:41,811 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:54:41,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:54:41,812 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:54:41,812 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:54:41,813 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:54:41,813 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:54:41,814 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:54:41,814 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:54:41,815 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:54:41,815 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:54:41,815 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:54:41,816 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:54:41,816 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:54:41,817 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:54:41,817 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:54:41,817 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:54:41,818 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:54:41,818 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:54:41,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:54:41,820 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:54:41,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:54:41,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:54:41,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:54:41,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:54:41,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:54:41,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:54:41,822 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:54:41,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:54:41,823 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:54:41,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:54:41,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:54:41,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:54:41,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:54:41,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:54:41,825 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:54:41,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:54:41,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:54:41,827 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:54:41,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:54:41,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:54:41,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:54:41,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/bin/utaipan-6cKwYrpEi9/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f1cd2841a16dfe2f8fe839faac013546a2b72431aadffbb7fe449f6c6dcaf65 [2022-11-20 20:54:42,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:54:42,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:54:42,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:54:42,279 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:54:42,279 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:54:42,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/eca-rers2012/Problem01_label23.c [2022-11-20 20:54:45,701 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:54:46,153 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:54:46,154 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/sv-benchmarks/c/eca-rers2012/Problem01_label23.c [2022-11-20 20:54:46,174 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/bin/utaipan-6cKwYrpEi9/data/68392078c/320f5d55063048e6b6aeedf32a77f85b/FLAG4f69943c7 [2022-11-20 20:54:46,198 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/bin/utaipan-6cKwYrpEi9/data/68392078c/320f5d55063048e6b6aeedf32a77f85b [2022-11-20 20:54:46,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:54:46,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:54:46,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:54:46,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:54:46,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:54:46,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:54:46" (1/1) ... [2022-11-20 20:54:46,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@515bb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:46, skipping insertion in model container [2022-11-20 20:54:46,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:54:46" (1/1) ... [2022-11-20 20:54:46,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:54:46,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:54:46,682 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/sv-benchmarks/c/eca-rers2012/Problem01_label23.c[17363,17376] [2022-11-20 20:54:46,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:54:46,770 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:54:46,919 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/sv-benchmarks/c/eca-rers2012/Problem01_label23.c[17363,17376] [2022-11-20 20:54:46,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:54:46,976 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:54:46,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:46 WrapperNode [2022-11-20 20:54:46,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:54:46,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:54:46,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:54:46,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:54:46,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:46" (1/1) ... [2022-11-20 20:54:47,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:46" (1/1) ... [2022-11-20 20:54:47,092 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2022-11-20 20:54:47,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:54:47,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:54:47,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:54:47,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:54:47,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:46" (1/1) ... [2022-11-20 20:54:47,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:46" (1/1) ... [2022-11-20 20:54:47,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:46" (1/1) ... [2022-11-20 20:54:47,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:46" (1/1) ... [2022-11-20 20:54:47,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:46" (1/1) ... [2022-11-20 20:54:47,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:46" (1/1) ... [2022-11-20 20:54:47,146 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:46" (1/1) ... [2022-11-20 20:54:47,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:46" (1/1) ... [2022-11-20 20:54:47,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:54:47,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:54:47,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:54:47,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:54:47,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:46" (1/1) ... [2022-11-20 20:54:47,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:54:47,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:54:47,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:54:47,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:54:47,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:54:47,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:54:47,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:54:47,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:54:47,402 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:54:47,405 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:54:48,932 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:54:49,349 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:54:49,349 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:54:49,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:54:49 BoogieIcfgContainer [2022-11-20 20:54:49,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:54:49,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:54:49,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:54:49,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:54:49,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:54:46" (1/3) ... [2022-11-20 20:54:49,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4382a9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:54:49, skipping insertion in model container [2022-11-20 20:54:49,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:54:46" (2/3) ... [2022-11-20 20:54:49,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4382a9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:54:49, skipping insertion in model container [2022-11-20 20:54:49,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:54:49" (3/3) ... [2022-11-20 20:54:49,378 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label23.c [2022-11-20 20:54:49,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:54:49,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:54:49,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:54:49,495 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7f211105, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:54:49,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:54:49,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:49,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 20:54:49,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:49,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:49,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:54:49,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:49,524 INFO L85 PathProgramCache]: Analyzing trace with hash 379012030, now seen corresponding path program 1 times [2022-11-20 20:54:49,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:49,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075815608] [2022-11-20 20:54:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:49,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:50,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:54:50,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:50,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075815608] [2022-11-20 20:54:50,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075815608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:50,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:50,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:54:50,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656380414] [2022-11-20 20:54:50,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:50,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:54:50,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:50,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:54:50,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:54:50,319 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:50,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:50,970 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2022-11-20 20:54:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:54:50,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-20 20:54:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:50,996 INFO L225 Difference]: With dead ends: 224 [2022-11-20 20:54:50,996 INFO L226 Difference]: Without dead ends: 145 [2022-11-20 20:54:51,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:54:51,005 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:51,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 23 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:54:51,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-20 20:54:51,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-11-20 20:54:51,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.8402777777777777) internal successors, (265), 144 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:51,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2022-11-20 20:54:51,081 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2022-11-20 20:54:51,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:51,082 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2022-11-20 20:54:51,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:51,083 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2022-11-20 20:54:51,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 20:54:51,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:51,086 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:51,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:54:51,087 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:54:51,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:51,087 INFO L85 PathProgramCache]: Analyzing trace with hash -615349679, now seen corresponding path program 1 times [2022-11-20 20:54:51,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:51,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742821534] [2022-11-20 20:54:51,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:51,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:54:51,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:51,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742821534] [2022-11-20 20:54:51,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742821534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:51,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:51,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:54:51,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641140357] [2022-11-20 20:54:51,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:51,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:54:51,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:51,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:54:51,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:54:51,220 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:51,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:51,739 INFO L93 Difference]: Finished difference Result 431 states and 792 transitions. [2022-11-20 20:54:51,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:54:51,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-20 20:54:51,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:51,742 INFO L225 Difference]: With dead ends: 431 [2022-11-20 20:54:51,742 INFO L226 Difference]: Without dead ends: 287 [2022-11-20 20:54:51,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:54:51,744 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 82 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:51,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 32 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:54:51,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-20 20:54:51,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-11-20 20:54:51,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6993006993006994) internal successors, (486), 286 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 486 transitions. [2022-11-20 20:54:51,786 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 486 transitions. Word has length 77 [2022-11-20 20:54:51,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:51,786 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 486 transitions. [2022-11-20 20:54:51,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:51,787 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 486 transitions. [2022-11-20 20:54:51,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 20:54:51,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:51,791 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:51,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:54:51,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:54:51,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:51,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1583667279, now seen corresponding path program 1 times [2022-11-20 20:54:51,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:51,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341195729] [2022-11-20 20:54:51,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:51,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:54:52,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:52,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341195729] [2022-11-20 20:54:52,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341195729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:52,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:52,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:54:52,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287416182] [2022-11-20 20:54:52,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:52,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:54:52,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:52,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:54:52,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:54:52,087 INFO L87 Difference]: Start difference. First operand 287 states and 486 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:52,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:52,568 INFO L93 Difference]: Finished difference Result 786 states and 1330 transitions. [2022-11-20 20:54:52,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:54:52,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-20 20:54:52,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:52,572 INFO L225 Difference]: With dead ends: 786 [2022-11-20 20:54:52,572 INFO L226 Difference]: Without dead ends: 500 [2022-11-20 20:54:52,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:54:52,575 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:52,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 144 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:54:52,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-11-20 20:54:52,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 358. [2022-11-20 20:54:52,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6274509803921569) internal successors, (581), 357 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2022-11-20 20:54:52,619 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 78 [2022-11-20 20:54:52,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:52,622 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2022-11-20 20:54:52,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2022-11-20 20:54:52,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-20 20:54:52,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:52,634 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:52,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:54:52,635 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:54:52,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:52,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1567515934, now seen corresponding path program 1 times [2022-11-20 20:54:52,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:52,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239509687] [2022-11-20 20:54:52,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:52,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:52,918 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:54:52,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:52,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239509687] [2022-11-20 20:54:52,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239509687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:52,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:52,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:54:52,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172126623] [2022-11-20 20:54:52,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:52,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:54:52,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:52,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:54:52,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:54:52,922 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:53,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:53,382 INFO L93 Difference]: Finished difference Result 1070 states and 1740 transitions. [2022-11-20 20:54:53,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:54:53,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-11-20 20:54:53,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:53,385 INFO L225 Difference]: With dead ends: 1070 [2022-11-20 20:54:53,385 INFO L226 Difference]: Without dead ends: 642 [2022-11-20 20:54:53,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:54:53,388 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 75 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:53,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 50 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:54:53,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-11-20 20:54:53,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2022-11-20 20:54:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.3213728549141965) internal successors, (847), 641 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:53,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 847 transitions. [2022-11-20 20:54:53,424 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 847 transitions. Word has length 84 [2022-11-20 20:54:53,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:53,425 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 847 transitions. [2022-11-20 20:54:53,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:53,426 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 847 transitions. [2022-11-20 20:54:53,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 20:54:53,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:53,429 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:53,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:54:53,429 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:54:53,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:53,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1122585044, now seen corresponding path program 1 times [2022-11-20 20:54:53,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:53,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706038416] [2022-11-20 20:54:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:53,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:53,590 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 20:54:53,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:53,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706038416] [2022-11-20 20:54:53,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706038416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:53,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:53,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:54:53,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251703957] [2022-11-20 20:54:53,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:53,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:54:53,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:53,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:54:53,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:54:53,594 INFO L87 Difference]: Start difference. First operand 642 states and 847 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:53,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:53,962 INFO L93 Difference]: Finished difference Result 1496 states and 2001 transitions. [2022-11-20 20:54:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:54:53,962 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 97 [2022-11-20 20:54:53,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:53,967 INFO L225 Difference]: With dead ends: 1496 [2022-11-20 20:54:53,967 INFO L226 Difference]: Without dead ends: 926 [2022-11-20 20:54:53,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:54:53,970 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 69 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:53,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 35 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:54:53,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-11-20 20:54:54,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2022-11-20 20:54:54,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.3231162196679438) internal successors, (1036), 783 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:54,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1036 transitions. [2022-11-20 20:54:54,009 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1036 transitions. Word has length 97 [2022-11-20 20:54:54,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:54,011 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1036 transitions. [2022-11-20 20:54:54,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:54,012 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1036 transitions. [2022-11-20 20:54:54,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-20 20:54:54,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:54,020 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 20:54:54,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:54:54,021 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:54:54,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:54,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1326613091, now seen corresponding path program 1 times [2022-11-20 20:54:54,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:54,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377189298] [2022-11-20 20:54:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:54,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 20:54:54,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:54,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377189298] [2022-11-20 20:54:54,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377189298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:54,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:54,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:54:54,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851880042] [2022-11-20 20:54:54,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:54,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:54:54,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:54,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:54:54,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:54:54,304 INFO L87 Difference]: Start difference. First operand 784 states and 1036 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:54,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:54,687 INFO L93 Difference]: Finished difference Result 1567 states and 2086 transitions. [2022-11-20 20:54:54,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:54:54,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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 99 [2022-11-20 20:54:54,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:54,692 INFO L225 Difference]: With dead ends: 1567 [2022-11-20 20:54:54,692 INFO L226 Difference]: Without dead ends: 855 [2022-11-20 20:54:54,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:54:54,701 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 59 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:54,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 50 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:54:54,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-20 20:54:54,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2022-11-20 20:54:54,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.3056206088992974) internal successors, (1115), 854 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1115 transitions. [2022-11-20 20:54:54,735 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1115 transitions. Word has length 99 [2022-11-20 20:54:54,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:54,735 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1115 transitions. [2022-11-20 20:54:54,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:54,736 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1115 transitions. [2022-11-20 20:54:54,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-20 20:54:54,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:54,739 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:54,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:54:54,740 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:54:54,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:54,740 INFO L85 PathProgramCache]: Analyzing trace with hash -681446245, now seen corresponding path program 1 times [2022-11-20 20:54:54,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:54,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286509069] [2022-11-20 20:54:54,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:54,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 20:54:55,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:55,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286509069] [2022-11-20 20:54:55,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286509069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:55,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:55,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:54:55,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976326516] [2022-11-20 20:54:55,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:55,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:54:55,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:55,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:54:55,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:54:55,037 INFO L87 Difference]: Start difference. First operand 855 states and 1115 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:55,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:55,614 INFO L93 Difference]: Finished difference Result 1780 states and 2335 transitions. [2022-11-20 20:54:55,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:54:55,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 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 103 [2022-11-20 20:54:55,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:55,621 INFO L225 Difference]: With dead ends: 1780 [2022-11-20 20:54:55,621 INFO L226 Difference]: Without dead ends: 997 [2022-11-20 20:54:55,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:54:55,624 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 203 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:55,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 49 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:54:55,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-11-20 20:54:55,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2022-11-20 20:54:55,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.2854054054054054) internal successors, (1189), 925 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:55,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1189 transitions. [2022-11-20 20:54:55,660 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1189 transitions. Word has length 103 [2022-11-20 20:54:55,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:55,661 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1189 transitions. [2022-11-20 20:54:55,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:55,662 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1189 transitions. [2022-11-20 20:54:55,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-20 20:54:55,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:55,666 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-11-20 20:54:55,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 20:54:55,667 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:54:55,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:55,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2040989690, now seen corresponding path program 1 times [2022-11-20 20:54:55,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:55,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034700289] [2022-11-20 20:54:55,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:55,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:54:55,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:55,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034700289] [2022-11-20 20:54:55,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034700289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:55,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:55,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:54:55,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908214037] [2022-11-20 20:54:55,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:55,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:54:55,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:55,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:54:55,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:54:55,905 INFO L87 Difference]: Start difference. First operand 926 states and 1189 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:56,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:56,463 INFO L93 Difference]: Finished difference Result 1993 states and 2589 transitions. [2022-11-20 20:54:56,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:54:56,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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 121 [2022-11-20 20:54:56,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:56,468 INFO L225 Difference]: With dead ends: 1993 [2022-11-20 20:54:56,469 INFO L226 Difference]: Without dead ends: 1068 [2022-11-20 20:54:56,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:54:56,471 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 135 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:56,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 49 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:54:56,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-11-20 20:54:56,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2022-11-20 20:54:56,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.2572972972972973) internal successors, (1163), 925 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:56,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1163 transitions. [2022-11-20 20:54:56,498 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1163 transitions. Word has length 121 [2022-11-20 20:54:56,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:56,498 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1163 transitions. [2022-11-20 20:54:56,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:56,499 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1163 transitions. [2022-11-20 20:54:56,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-20 20:54:56,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:56,502 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:56,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 20:54:56,503 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:54:56,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:56,504 INFO L85 PathProgramCache]: Analyzing trace with hash 433137106, now seen corresponding path program 1 times [2022-11-20 20:54:56,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:56,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370991043] [2022-11-20 20:54:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:56,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 20:54:56,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:56,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370991043] [2022-11-20 20:54:56,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370991043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:56,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:56,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:54:56,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024746595] [2022-11-20 20:54:56,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:56,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:54:56,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:56,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:54:56,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:54:56,742 INFO L87 Difference]: Start difference. First operand 926 states and 1163 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:57,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:57,089 INFO L93 Difference]: Finished difference Result 1920 states and 2416 transitions. [2022-11-20 20:54:57,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:54:57,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2022-11-20 20:54:57,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:57,091 INFO L225 Difference]: With dead ends: 1920 [2022-11-20 20:54:57,091 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 20:54:57,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:54:57,094 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:57,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 93 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:54:57,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 20:54:57,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 20:54:57,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:57,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 20:54:57,096 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 137 [2022-11-20 20:54:57,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:57,096 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 20:54:57,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:54:57,097 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 20:54:57,097 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 20:54:57,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:54:57,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 20:54:57,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 20:54:57,379 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2022-11-20 20:54:57,379 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2022-11-20 20:54:57,379 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2022-11-20 20:54:57,379 INFO L899 garLoopResultBuilder]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2022-11-20 20:54:57,379 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2022-11-20 20:54:57,379 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2022-11-20 20:54:57,380 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2022-11-20 20:54:57,380 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2022-11-20 20:54:57,380 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2022-11-20 20:54:57,380 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2022-11-20 20:54:57,380 INFO L899 garLoopResultBuilder]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2022-11-20 20:54:57,380 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2022-11-20 20:54:57,380 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2022-11-20 20:54:57,380 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2022-11-20 20:54:57,381 INFO L899 garLoopResultBuilder]: For program point L471(line 471) no Hoare annotation was computed. [2022-11-20 20:54:57,381 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2022-11-20 20:54:57,381 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2022-11-20 20:54:57,381 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2022-11-20 20:54:57,383 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2022-11-20 20:54:57,383 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2022-11-20 20:54:57,383 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2022-11-20 20:54:57,383 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2022-11-20 20:54:57,383 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2022-11-20 20:54:57,383 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2022-11-20 20:54:57,384 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2022-11-20 20:54:57,384 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2022-11-20 20:54:57,384 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2022-11-20 20:54:57,384 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2022-11-20 20:54:57,384 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2022-11-20 20:54:57,385 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2022-11-20 20:54:57,385 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2022-11-20 20:54:57,385 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2022-11-20 20:54:57,385 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2022-11-20 20:54:57,385 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2022-11-20 20:54:57,386 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2022-11-20 20:54:57,386 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2022-11-20 20:54:57,386 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2022-11-20 20:54:57,386 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2022-11-20 20:54:57,386 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2022-11-20 20:54:57,387 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 20:54:57,387 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2022-11-20 20:54:57,387 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2022-11-20 20:54:57,387 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2022-11-20 20:54:57,391 INFO L895 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1))) (or (<= ~a8~0 13) (and (not (= ~a7~0 1)) .cse0) (= ~a20~0 0) (and (<= 5 ~a16~0) .cse0))) [2022-11-20 20:54:57,391 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2022-11-20 20:54:57,391 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2022-11-20 20:54:57,391 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2022-11-20 20:54:57,392 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2022-11-20 20:54:57,392 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2022-11-20 20:54:57,392 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2022-11-20 20:54:57,392 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2022-11-20 20:54:57,392 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 20:54:57,393 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2022-11-20 20:54:57,393 INFO L902 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2022-11-20 20:54:57,393 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2022-11-20 20:54:57,393 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2022-11-20 20:54:57,393 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2022-11-20 20:54:57,394 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2022-11-20 20:54:57,394 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2022-11-20 20:54:57,394 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2022-11-20 20:54:57,394 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2022-11-20 20:54:57,394 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2022-11-20 20:54:57,395 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2022-11-20 20:54:57,395 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2022-11-20 20:54:57,395 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2022-11-20 20:54:57,395 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2022-11-20 20:54:57,395 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2022-11-20 20:54:57,396 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1))) (or (<= ~a8~0 13) (and (not (= ~a7~0 1)) .cse0) (= ~a20~0 0) (and (<= 5 ~a16~0) .cse0))) [2022-11-20 20:54:57,396 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2022-11-20 20:54:57,396 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 471) no Hoare annotation was computed. [2022-11-20 20:54:57,396 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2022-11-20 20:54:57,397 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2022-11-20 20:54:57,397 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2022-11-20 20:54:57,397 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2022-11-20 20:54:57,397 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2022-11-20 20:54:57,397 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2022-11-20 20:54:57,402 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:57,404 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:54:57,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:54:57 BoogieIcfgContainer [2022-11-20 20:54:57,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:54:57,432 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:54:57,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:54:57,432 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:54:57,433 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:54:49" (3/4) ... [2022-11-20 20:54:57,436 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 20:54:57,469 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 111 nodes and edges [2022-11-20 20:54:57,470 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-20 20:54:57,472 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-20 20:54:57,473 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 20:54:57,655 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:54:57,655 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:54:57,656 INFO L158 Benchmark]: Toolchain (without parser) took 11448.51ms. Allocated memory was 165.7MB in the beginning and 243.3MB in the end (delta: 77.6MB). Free memory was 131.4MB in the beginning and 201.4MB in the end (delta: -70.0MB). Peak memory consumption was 141.4MB. Max. memory is 16.1GB. [2022-11-20 20:54:57,656 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory was 70.0MB in the beginning and 69.8MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:54:57,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 766.30ms. Allocated memory is still 165.7MB. Free memory was 131.0MB in the beginning and 103.8MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-20 20:54:57,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 113.27ms. Allocated memory is still 165.7MB. Free memory was 103.8MB in the beginning and 98.1MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 20:54:57,658 INFO L158 Benchmark]: Boogie Preprocessor took 65.48ms. Allocated memory is still 165.7MB. Free memory was 98.1MB in the beginning and 93.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 20:54:57,658 INFO L158 Benchmark]: RCFGBuilder took 2202.58ms. Allocated memory is still 165.7MB. Free memory was 93.9MB in the beginning and 114.9MB in the end (delta: -21.1MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. [2022-11-20 20:54:57,659 INFO L158 Benchmark]: TraceAbstraction took 8063.10ms. Allocated memory was 165.7MB in the beginning and 243.3MB in the end (delta: 77.6MB). Free memory was 114.9MB in the beginning and 79.4MB in the end (delta: 35.5MB). Peak memory consumption was 115.3MB. Max. memory is 16.1GB. [2022-11-20 20:54:57,660 INFO L158 Benchmark]: Witness Printer took 223.41ms. Allocated memory is still 243.3MB. Free memory was 78.3MB in the beginning and 201.4MB in the end (delta: -123.1MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2022-11-20 20:54:57,663 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory was 70.0MB in the beginning and 69.8MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 766.30ms. Allocated memory is still 165.7MB. Free memory was 131.0MB in the beginning and 103.8MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 113.27ms. Allocated memory is still 165.7MB. Free memory was 103.8MB in the beginning and 98.1MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.48ms. Allocated memory is still 165.7MB. Free memory was 98.1MB in the beginning and 93.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2202.58ms. Allocated memory is still 165.7MB. Free memory was 93.9MB in the beginning and 114.9MB in the end (delta: -21.1MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. * TraceAbstraction took 8063.10ms. Allocated memory was 165.7MB in the beginning and 243.3MB in the end (delta: 77.6MB). Free memory was 114.9MB in the beginning and 79.4MB in the end (delta: 35.5MB). Peak memory consumption was 115.3MB. Max. memory is 16.1GB. * Witness Printer took 223.41ms. Allocated memory is still 243.3MB. Free memory was 78.3MB in the beginning and 201.4MB in the end (delta: -123.1MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 471]: 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: 7.9s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 654 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 654 mSDsluCounter, 525 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 459 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2029 IncrementalHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 459 mSolverCounterUnsat, 487 mSDtfsCounter, 2029 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=926occurred in iteration=7, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 497 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 45 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1266 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 288 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 867 NumberOfCodeBlocks, 867 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 858 ConstructedInterpolants, 0 QuantifiedInterpolants, 1719 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 306/306 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: ((a8 <= 13 || (!(a7 == 1) && a20 == 1)) || a20 == 0) || (5 <= a16 && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((a8 <= 13 || (!(a7 == 1) && a20 == 1)) || a20 == 0) || (5 <= a16 && a20 == 1) RESULT: Ultimate proved your program to be correct! [2022-11-20 20:54:57,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_056a1c27-b9fe-48a8-87d3-fee567054673/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE