./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label28.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label28.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0 --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 61e7be63d8e367b5f988006276e044c9c346c537d002ac6b15fa75838eb4df4d --- 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-e04fb08 [2022-11-16 20:12:32,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:12:32,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:12:32,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:12:32,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:12:32,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:12:32,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:12:32,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:12:32,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:12:32,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:12:32,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:12:32,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:12:32,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:12:32,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:12:32,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:12:32,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:12:32,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:12:32,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:12:32,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:12:32,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:12:32,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:12:32,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:12:32,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:12:32,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:12:32,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:12:32,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:12:32,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:12:32,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:12:32,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:12:32,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:12:32,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:12:32,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:12:32,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:12:32,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:12:32,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:12:32,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:12:32,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:12:32,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:12:32,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:12:32,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:12:32,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:12:32,247 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 20:12:32,300 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:12:32,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:12:32,301 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:12:32,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:12:32,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:12:32,303 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:12:32,303 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:12:32,304 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:12:32,304 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:12:32,304 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:12:32,306 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:12:32,306 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:12:32,307 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:12:32,307 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:12:32,307 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:12:32,308 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:12:32,308 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:12:32,308 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:12:32,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:12:32,310 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:12:32,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:12:32,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:12:32,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:12:32,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:12:32,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:12:32,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:12:32,314 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:12:32,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:12:32,314 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:12:32,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:12:32,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:12:32,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:12:32,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:12:32,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:12:32,317 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:12:32,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:12:32,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:12:32,317 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:12:32,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:12:32,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:12:32,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:12:32,320 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_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61e7be63d8e367b5f988006276e044c9c346c537d002ac6b15fa75838eb4df4d [2022-11-16 20:12:32,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:12:32,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:12:32,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:12:32,743 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:12:32,744 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:12:32,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/eca-rers2012/Problem02_label28.c [2022-11-16 20:12:32,832 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/data/7ceded5f2/927f78528e844f0dacc48100926b2ff5/FLAGcf2d6f507 [2022-11-16 20:12:33,630 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:12:33,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/sv-benchmarks/c/eca-rers2012/Problem02_label28.c [2022-11-16 20:12:33,645 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/data/7ceded5f2/927f78528e844f0dacc48100926b2ff5/FLAGcf2d6f507 [2022-11-16 20:12:33,865 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/data/7ceded5f2/927f78528e844f0dacc48100926b2ff5 [2022-11-16 20:12:33,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:12:33,872 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:12:33,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:12:33,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:12:33,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:12:33,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:12:33" (1/1) ... [2022-11-16 20:12:33,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d7112b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:12:33, skipping insertion in model container [2022-11-16 20:12:33,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:12:33" (1/1) ... [2022-11-16 20:12:33,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:12:33,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:12:34,571 WARN L229 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_59c377e7-33d3-4857-92ae-c6886ebaa8d5/sv-benchmarks/c/eca-rers2012/Problem02_label28.c[19513,19526] [2022-11-16 20:12:34,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:12:34,616 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:12:34,754 WARN L229 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_59c377e7-33d3-4857-92ae-c6886ebaa8d5/sv-benchmarks/c/eca-rers2012/Problem02_label28.c[19513,19526] [2022-11-16 20:12:34,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:12:34,787 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:12:34,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:12:34 WrapperNode [2022-11-16 20:12:34,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:12:34,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:12:34,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:12:34,790 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:12:34,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:12:34" (1/1) ... [2022-11-16 20:12:34,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:12:34" (1/1) ... [2022-11-16 20:12:34,902 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2022-11-16 20:12:34,905 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:12:34,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:12:34,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:12:34,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:12:34,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:12:34" (1/1) ... [2022-11-16 20:12:34,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:12:34" (1/1) ... [2022-11-16 20:12:34,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:12:34" (1/1) ... [2022-11-16 20:12:34,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:12:34" (1/1) ... [2022-11-16 20:12:34,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:12:34" (1/1) ... [2022-11-16 20:12:34,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:12:34" (1/1) ... [2022-11-16 20:12:34,994 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:12:34" (1/1) ... [2022-11-16 20:12:34,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:12:34" (1/1) ... [2022-11-16 20:12:35,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:12:35,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:12:35,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:12:35,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:12:35,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:12:34" (1/1) ... [2022-11-16 20:12:35,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:12:35,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:12:35,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:12:35,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:12:35,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:12:35,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:12:35,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:12:35,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:12:35,258 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:12:35,261 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:12:36,764 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:12:37,072 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:12:37,072 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 20:12:37,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:12:37 BoogieIcfgContainer [2022-11-16 20:12:37,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:12:37,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:12:37,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:12:37,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:12:37,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:12:33" (1/3) ... [2022-11-16 20:12:37,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4bd730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:12:37, skipping insertion in model container [2022-11-16 20:12:37,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:12:34" (2/3) ... [2022-11-16 20:12:37,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4bd730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:12:37, skipping insertion in model container [2022-11-16 20:12:37,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:12:37" (3/3) ... [2022-11-16 20:12:37,095 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label28.c [2022-11-16 20:12:37,114 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:12:37,115 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:12:37,191 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:12:37,201 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;@3ce4f099, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:12:37,201 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:12:37,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:37,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-16 20:12:37,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:37,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:12:37,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:12:37,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:37,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1243331318, now seen corresponding path program 1 times [2022-11-16 20:12:37,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:37,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137141895] [2022-11-16 20:12:37,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:37,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:37,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:12:37,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:37,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137141895] [2022-11-16 20:12:37,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137141895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:37,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:12:37,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:12:37,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824748348] [2022-11-16 20:12:37,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:37,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:12:37,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:37,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:12:37,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:12:37,803 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:38,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:38,367 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2022-11-16 20:12:38,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:12:38,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-16 20:12:38,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:38,392 INFO L225 Difference]: With dead ends: 251 [2022-11-16 20:12:38,392 INFO L226 Difference]: Without dead ends: 163 [2022-11-16 20:12:38,397 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 [2022-11-16 20:12:38,406 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 58 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:38,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 11 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 20:12:38,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-16 20:12:38,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-11-16 20:12:38,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.9320987654320987) internal successors, (313), 162 states have internal predecessors, (313), 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) [2022-11-16 20:12:38,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2022-11-16 20:12:38,498 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2022-11-16 20:12:38,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:38,500 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2022-11-16 20:12:38,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:38,501 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2022-11-16 20:12:38,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-16 20:12:38,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:38,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:12:38,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:12:38,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:12:38,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:38,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1299306326, now seen corresponding path program 1 times [2022-11-16 20:12:38,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:38,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862982881] [2022-11-16 20:12:38,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:38,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:38,849 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:12:38,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:38,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862982881] [2022-11-16 20:12:38,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862982881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:38,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:12:38,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:12:38,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224298858] [2022-11-16 20:12:38,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:38,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:12:38,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:38,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:12:38,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:12:38,855 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 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) [2022-11-16 20:12:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:39,375 INFO L93 Difference]: Finished difference Result 487 states and 937 transitions. [2022-11-16 20:12:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:12:39,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 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 91 [2022-11-16 20:12:39,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:39,379 INFO L225 Difference]: With dead ends: 487 [2022-11-16 20:12:39,379 INFO L226 Difference]: Without dead ends: 325 [2022-11-16 20:12:39,380 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 [2022-11-16 20:12:39,381 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 115 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:39,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 20 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 20:12:39,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-11-16 20:12:39,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2022-11-16 20:12:39,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.84472049689441) internal successors, (594), 322 states have internal predecessors, (594), 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) [2022-11-16 20:12:39,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 594 transitions. [2022-11-16 20:12:39,430 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 594 transitions. Word has length 91 [2022-11-16 20:12:39,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:39,433 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 594 transitions. [2022-11-16 20:12:39,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 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) [2022-11-16 20:12:39,436 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 594 transitions. [2022-11-16 20:12:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-16 20:12:39,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:39,443 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:12:39,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:12:39,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:12:39,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:39,452 INFO L85 PathProgramCache]: Analyzing trace with hash 588074389, now seen corresponding path program 1 times [2022-11-16 20:12:39,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:39,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958448216] [2022-11-16 20:12:39,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:39,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:39,802 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 20:12:39,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:39,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958448216] [2022-11-16 20:12:39,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958448216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:39,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:12:39,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:12:39,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582552659] [2022-11-16 20:12:39,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:39,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:12:39,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:39,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:12:39,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:12:39,805 INFO L87 Difference]: Start difference. First operand 323 states and 594 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 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) [2022-11-16 20:12:40,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:40,232 INFO L93 Difference]: Finished difference Result 885 states and 1638 transitions. [2022-11-16 20:12:40,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:12:40,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 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 95 [2022-11-16 20:12:40,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:40,235 INFO L225 Difference]: With dead ends: 885 [2022-11-16 20:12:40,235 INFO L226 Difference]: Without dead ends: 563 [2022-11-16 20:12:40,237 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 [2022-11-16 20:12:40,238 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:40,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 66 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 20:12:40,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-11-16 20:12:40,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2022-11-16 20:12:40,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.616182572614108) internal successors, (779), 482 states have internal predecessors, (779), 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) [2022-11-16 20:12:40,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 779 transitions. [2022-11-16 20:12:40,279 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 779 transitions. Word has length 95 [2022-11-16 20:12:40,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:40,280 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 779 transitions. [2022-11-16 20:12:40,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 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) [2022-11-16 20:12:40,280 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 779 transitions. [2022-11-16 20:12:40,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-16 20:12:40,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:40,284 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:12:40,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 20:12:40,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:12:40,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:40,285 INFO L85 PathProgramCache]: Analyzing trace with hash 341417776, now seen corresponding path program 1 times [2022-11-16 20:12:40,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:40,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662845499] [2022-11-16 20:12:40,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:40,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:40,573 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 20:12:40,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:40,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662845499] [2022-11-16 20:12:40,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662845499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:40,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:12:40,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:12:40,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666657476] [2022-11-16 20:12:40,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:40,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:12:40,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:40,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:12:40,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:12:40,581 INFO L87 Difference]: Start difference. First operand 483 states and 779 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2022-11-16 20:12:41,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:41,141 INFO L93 Difference]: Finished difference Result 1205 states and 2008 transitions. [2022-11-16 20:12:41,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:12:41,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 100 [2022-11-16 20:12:41,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:41,146 INFO L225 Difference]: With dead ends: 1205 [2022-11-16 20:12:41,146 INFO L226 Difference]: Without dead ends: 723 [2022-11-16 20:12:41,148 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 [2022-11-16 20:12:41,150 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 78 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:41,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 138 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 20:12:41,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-11-16 20:12:41,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2022-11-16 20:12:41,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.4750692520775623) internal successors, (1065), 722 states have internal predecessors, (1065), 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) [2022-11-16 20:12:41,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1065 transitions. [2022-11-16 20:12:41,178 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1065 transitions. Word has length 100 [2022-11-16 20:12:41,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:41,179 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 1065 transitions. [2022-11-16 20:12:41,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2022-11-16 20:12:41,179 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1065 transitions. [2022-11-16 20:12:41,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 20:12:41,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:41,183 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:12:41,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 20:12:41,184 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:12:41,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:41,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1329941030, now seen corresponding path program 1 times [2022-11-16 20:12:41,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:41,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192008634] [2022-11-16 20:12:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:41,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 20:12:41,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:41,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192008634] [2022-11-16 20:12:41,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192008634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:41,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:12:41,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:12:41,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348691175] [2022-11-16 20:12:41,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:41,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:12:41,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:41,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:12:41,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:12:41,303 INFO L87 Difference]: Start difference. First operand 723 states and 1065 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 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) [2022-11-16 20:12:41,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:41,796 INFO L93 Difference]: Finished difference Result 1925 states and 2912 transitions. [2022-11-16 20:12:41,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:12:41,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 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 101 [2022-11-16 20:12:41,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:41,806 INFO L225 Difference]: With dead ends: 1925 [2022-11-16 20:12:41,806 INFO L226 Difference]: Without dead ends: 1203 [2022-11-16 20:12:41,808 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 [2022-11-16 20:12:41,809 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 111 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:41,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 28 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 20:12:41,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-11-16 20:12:41,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2022-11-16 20:12:41,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.4334442595673877) internal successors, (1723), 1202 states have internal predecessors, (1723), 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) [2022-11-16 20:12:41,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1723 transitions. [2022-11-16 20:12:41,851 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1723 transitions. Word has length 101 [2022-11-16 20:12:41,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:41,851 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1723 transitions. [2022-11-16 20:12:41,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 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) [2022-11-16 20:12:41,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1723 transitions. [2022-11-16 20:12:41,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-16 20:12:41,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:41,856 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:12:41,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 20:12:41,856 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:12:41,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:41,857 INFO L85 PathProgramCache]: Analyzing trace with hash -47592282, now seen corresponding path program 1 times [2022-11-16 20:12:41,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:41,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439689848] [2022-11-16 20:12:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:41,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 20:12:42,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:42,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439689848] [2022-11-16 20:12:42,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439689848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:42,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:12:42,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:12:42,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3897596] [2022-11-16 20:12:42,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:42,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:12:42,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:42,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:12:42,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:12:42,054 INFO L87 Difference]: Start difference. First operand 1203 states and 1723 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2022-11-16 20:12:42,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:42,522 INFO L93 Difference]: Finished difference Result 2885 states and 4077 transitions. [2022-11-16 20:12:42,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:12:42,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 104 [2022-11-16 20:12:42,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:42,561 INFO L225 Difference]: With dead ends: 2885 [2022-11-16 20:12:42,562 INFO L226 Difference]: Without dead ends: 1683 [2022-11-16 20:12:42,563 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 [2022-11-16 20:12:42,566 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 79 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:42,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 146 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 20:12:42,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2022-11-16 20:12:42,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1683. [2022-11-16 20:12:42,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.334720570749108) internal successors, (2245), 1682 states have internal predecessors, (2245), 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) [2022-11-16 20:12:42,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2245 transitions. [2022-11-16 20:12:42,631 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2245 transitions. Word has length 104 [2022-11-16 20:12:42,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:42,632 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 2245 transitions. [2022-11-16 20:12:42,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2022-11-16 20:12:42,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2245 transitions. [2022-11-16 20:12:42,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-16 20:12:42,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:42,637 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:12:42,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 20:12:42,638 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:12:42,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:42,639 INFO L85 PathProgramCache]: Analyzing trace with hash 91169892, now seen corresponding path program 1 times [2022-11-16 20:12:42,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:42,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70184249] [2022-11-16 20:12:42,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:42,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:43,055 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:12:43,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:43,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70184249] [2022-11-16 20:12:43,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70184249] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:12:43,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035180761] [2022-11-16 20:12:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:43,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:12:43,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:12:43,063 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:12:43,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 20:12:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:43,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 20:12:43,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:12:43,501 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 20:12:43,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:12:43,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035180761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:43,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 20:12:43,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-16 20:12:43,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199742556] [2022-11-16 20:12:43,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:43,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:12:43,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:43,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:12:43,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 20:12:43,504 INFO L87 Difference]: Start difference. First operand 1683 states and 2245 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:44,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:44,019 INFO L93 Difference]: Finished difference Result 3365 states and 4489 transitions. [2022-11-16 20:12:44,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:12:44,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-11-16 20:12:44,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:44,031 INFO L225 Difference]: With dead ends: 3365 [2022-11-16 20:12:44,031 INFO L226 Difference]: Without dead ends: 1683 [2022-11-16 20:12:44,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 20:12:44,040 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 22 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:44,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 18 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 20:12:44,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2022-11-16 20:12:44,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1283. [2022-11-16 20:12:44,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1282 states have (on average 1.2121684867394695) internal successors, (1554), 1282 states have internal predecessors, (1554), 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) [2022-11-16 20:12:44,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1554 transitions. [2022-11-16 20:12:44,089 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1554 transitions. Word has length 107 [2022-11-16 20:12:44,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:44,090 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 1554 transitions. [2022-11-16 20:12:44,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:12:44,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1554 transitions. [2022-11-16 20:12:44,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 20:12:44,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:44,094 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:12:44,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 20:12:44,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 20:12:44,302 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:12:44,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:44,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1786400179, now seen corresponding path program 1 times [2022-11-16 20:12:44,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:44,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471776707] [2022-11-16 20:12:44,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:44,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:44,446 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 20:12:44,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:44,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471776707] [2022-11-16 20:12:44,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471776707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:44,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:12:44,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:12:44,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846157149] [2022-11-16 20:12:44,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:44,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:12:44,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:44,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:12:44,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:12:44,455 INFO L87 Difference]: Start difference. First operand 1283 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2022-11-16 20:12:44,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:44,914 INFO L93 Difference]: Finished difference Result 2885 states and 3607 transitions. [2022-11-16 20:12:44,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:12:44,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-11-16 20:12:44,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:44,924 INFO L225 Difference]: With dead ends: 2885 [2022-11-16 20:12:44,925 INFO L226 Difference]: Without dead ends: 1603 [2022-11-16 20:12:44,948 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 [2022-11-16 20:12:44,949 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 68 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:44,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 147 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 20:12:44,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2022-11-16 20:12:44,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1523. [2022-11-16 20:12:44,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.240473061760841) internal successors, (1888), 1522 states have internal predecessors, (1888), 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) [2022-11-16 20:12:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1888 transitions. [2022-11-16 20:12:44,992 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1888 transitions. Word has length 124 [2022-11-16 20:12:44,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:44,994 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 1888 transitions. [2022-11-16 20:12:44,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2022-11-16 20:12:44,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1888 transitions. [2022-11-16 20:12:45,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-16 20:12:45,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:12:45,003 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:12:45,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 20:12:45,004 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:12:45,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:12:45,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1107449828, now seen corresponding path program 1 times [2022-11-16 20:12:45,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:12:45,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969032776] [2022-11-16 20:12:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:12:45,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:12:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:12:45,255 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-16 20:12:45,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:12:45,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969032776] [2022-11-16 20:12:45,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969032776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:12:45,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:12:45,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:12:45,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215621938] [2022-11-16 20:12:45,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:12:45,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:12:45,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:12:45,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:12:45,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:12:45,259 INFO L87 Difference]: Start difference. First operand 1523 states and 1888 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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) [2022-11-16 20:12:45,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:12:45,512 INFO L93 Difference]: Finished difference Result 2723 states and 3428 transitions. [2022-11-16 20:12:45,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:12:45,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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 210 [2022-11-16 20:12:45,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:12:45,514 INFO L225 Difference]: With dead ends: 2723 [2022-11-16 20:12:45,514 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 20:12:45,517 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 [2022-11-16 20:12:45,522 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 97 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:12:45,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 3 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:12:45,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 20:12:45,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 20:12:45,525 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) [2022-11-16 20:12:45,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 20:12:45,525 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 210 [2022-11-16 20:12:45,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:12:45,526 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 20:12:45,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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) [2022-11-16 20:12:45,526 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 20:12:45,527 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 20:12:45,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 20:12:45,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 20:12:45,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 20:12:45,876 INFO L899 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2022-11-16 20:12:45,876 INFO L899 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2022-11-16 20:12:45,876 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2022-11-16 20:12:45,876 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2022-11-16 20:12:45,876 INFO L899 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2022-11-16 20:12:45,876 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2022-11-16 20:12:45,876 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2022-11-16 20:12:45,877 INFO L899 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2022-11-16 20:12:45,877 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2022-11-16 20:12:45,877 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2022-11-16 20:12:45,877 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2022-11-16 20:12:45,877 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2022-11-16 20:12:45,877 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2022-11-16 20:12:45,877 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2022-11-16 20:12:45,877 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2022-11-16 20:12:45,877 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2022-11-16 20:12:45,877 INFO L899 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2022-11-16 20:12:45,878 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2022-11-16 20:12:45,878 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2022-11-16 20:12:45,878 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2022-11-16 20:12:45,878 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2022-11-16 20:12:45,878 INFO L899 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2022-11-16 20:12:45,878 INFO L899 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2022-11-16 20:12:45,878 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2022-11-16 20:12:45,878 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2022-11-16 20:12:45,878 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2022-11-16 20:12:45,878 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 20:12:45,879 INFO L899 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2022-11-16 20:12:45,879 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2022-11-16 20:12:45,879 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2022-11-16 20:12:45,879 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2022-11-16 20:12:45,879 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2022-11-16 20:12:45,879 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2022-11-16 20:12:45,879 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2022-11-16 20:12:45,879 INFO L899 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2022-11-16 20:12:45,879 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2022-11-16 20:12:45,880 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 554) no Hoare annotation was computed. [2022-11-16 20:12:45,880 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2022-11-16 20:12:45,880 INFO L899 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2022-11-16 20:12:45,880 INFO L899 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2022-11-16 20:12:45,880 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2022-11-16 20:12:45,880 INFO L899 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2022-11-16 20:12:45,880 INFO L899 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2022-11-16 20:12:45,880 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2022-11-16 20:12:45,880 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2022-11-16 20:12:45,881 INFO L899 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2022-11-16 20:12:45,881 INFO L899 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2022-11-16 20:12:45,881 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2022-11-16 20:12:45,881 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2022-11-16 20:12:45,881 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2022-11-16 20:12:45,881 INFO L899 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2022-11-16 20:12:45,881 INFO L899 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2022-11-16 20:12:45,881 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2022-11-16 20:12:45,882 INFO L895 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (= ~a25~0 1)) (.cse1 (<= ~a17~0 8)) (.cse2 (= ~a19~0 1))) (or (and .cse0 (<= 8 ~a17~0) .cse1 .cse2) (and .cse1 (<= ~a28~0 10)) (and .cse0 (= ~a11~0 0) .cse1 .cse2))) [2022-11-16 20:12:45,882 INFO L899 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2022-11-16 20:12:45,882 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2022-11-16 20:12:45,882 INFO L902 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2022-11-16 20:12:45,882 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2022-11-16 20:12:45,882 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2022-11-16 20:12:45,883 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2022-11-16 20:12:45,883 INFO L899 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2022-11-16 20:12:45,883 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2022-11-16 20:12:45,883 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 20:12:45,883 INFO L899 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2022-11-16 20:12:45,883 INFO L899 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2022-11-16 20:12:45,883 INFO L895 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (= ~a25~0 1)) (.cse1 (<= ~a17~0 8)) (.cse2 (= ~a19~0 1))) (or (and .cse0 (<= 8 ~a17~0) .cse1 .cse2) (and .cse1 (<= ~a28~0 10)) (and .cse0 (= ~a11~0 0) .cse1 .cse2))) [2022-11-16 20:12:45,892 INFO L899 garLoopResultBuilder]: For program point L550-1(lines 39 608) no Hoare annotation was computed. [2022-11-16 20:12:45,892 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2022-11-16 20:12:45,892 INFO L899 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2022-11-16 20:12:45,893 INFO L899 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2022-11-16 20:12:45,916 INFO L899 garLoopResultBuilder]: For program point L553-1(lines 39 608) no Hoare annotation was computed. [2022-11-16 20:12:45,916 INFO L899 garLoopResultBuilder]: For program point L554(line 554) no Hoare annotation was computed. [2022-11-16 20:12:45,916 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2022-11-16 20:12:45,917 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2022-11-16 20:12:45,917 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2022-11-16 20:12:45,917 INFO L899 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2022-11-16 20:12:45,917 INFO L899 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2022-11-16 20:12:45,917 INFO L899 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2022-11-16 20:12:45,917 INFO L899 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2022-11-16 20:12:45,918 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2022-11-16 20:12:45,918 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2022-11-16 20:12:45,918 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2022-11-16 20:12:45,918 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2022-11-16 20:12:45,918 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2022-11-16 20:12:45,919 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2022-11-16 20:12:45,924 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:12:45,929 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 20:12:45,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 08:12:45 BoogieIcfgContainer [2022-11-16 20:12:45,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 20:12:45,953 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 20:12:45,953 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 20:12:45,953 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 20:12:45,954 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:12:37" (3/4) ... [2022-11-16 20:12:45,957 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 20:12:45,991 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2022-11-16 20:12:45,992 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-16 20:12:45,993 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-16 20:12:45,995 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 20:12:46,138 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 20:12:46,138 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 20:12:46,139 INFO L158 Benchmark]: Toolchain (without parser) took 12267.28ms. Allocated memory was 111.1MB in the beginning and 220.2MB in the end (delta: 109.1MB). Free memory was 65.1MB in the beginning and 174.6MB in the end (delta: -109.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:12:46,139 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 111.1MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:12:46,140 INFO L158 Benchmark]: CACSL2BoogieTranslator took 909.91ms. Allocated memory is still 111.1MB. Free memory was 64.9MB in the beginning and 69.3MB in the end (delta: -4.5MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2022-11-16 20:12:46,140 INFO L158 Benchmark]: Boogie Procedure Inliner took 115.84ms. Allocated memory is still 111.1MB. Free memory was 69.3MB in the beginning and 63.8MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 20:12:46,141 INFO L158 Benchmark]: Boogie Preprocessor took 97.33ms. Allocated memory is still 111.1MB. Free memory was 63.8MB in the beginning and 59.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 20:12:46,141 INFO L158 Benchmark]: RCFGBuilder took 2078.79ms. Allocated memory was 111.1MB in the beginning and 138.4MB in the end (delta: 27.3MB). Free memory was 59.3MB in the beginning and 54.1MB in the end (delta: 5.2MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2022-11-16 20:12:46,142 INFO L158 Benchmark]: TraceAbstraction took 8864.83ms. Allocated memory was 138.4MB in the beginning and 220.2MB in the end (delta: 81.8MB). Free memory was 53.1MB in the beginning and 186.2MB in the end (delta: -133.1MB). Peak memory consumption was 77.9MB. Max. memory is 16.1GB. [2022-11-16 20:12:46,142 INFO L158 Benchmark]: Witness Printer took 185.57ms. Allocated memory is still 220.2MB. Free memory was 186.2MB in the beginning and 174.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 20:12:46,144 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 111.1MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 909.91ms. Allocated memory is still 111.1MB. Free memory was 64.9MB in the beginning and 69.3MB in the end (delta: -4.5MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 115.84ms. Allocated memory is still 111.1MB. Free memory was 69.3MB in the beginning and 63.8MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 97.33ms. Allocated memory is still 111.1MB. Free memory was 63.8MB in the beginning and 59.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2078.79ms. Allocated memory was 111.1MB in the beginning and 138.4MB in the end (delta: 27.3MB). Free memory was 59.3MB in the beginning and 54.1MB in the end (delta: 5.2MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. * TraceAbstraction took 8864.83ms. Allocated memory was 138.4MB in the beginning and 220.2MB in the end (delta: 81.8MB). Free memory was 53.1MB in the beginning and 186.2MB in the end (delta: -133.1MB). Peak memory consumption was 77.9MB. Max. memory is 16.1GB. * Witness Printer took 185.57ms. Allocated memory is still 220.2MB. Free memory was 186.2MB in the beginning and 174.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 554]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.8s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 706 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 706 mSDsluCounter, 577 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40 mSDsCounter, 530 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2104 IncrementalHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 530 mSolverCounterUnsat, 537 mSDtfsCounter, 2104 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1683occurred in iteration=6, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 562 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 35 NumberOfFragments, 69 HoareAnnotationTreeSize, 3 FomulaSimplifications, 38 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 620 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1119 NumberOfCodeBlocks, 1119 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1109 ConstructedInterpolants, 0 QuantifiedInterpolants, 3323 SizeOfPredicates, 0 NumberOfNonLiveVariables, 287 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 464/480 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1) || (a17 <= 8 && a28 <= 10)) || (((a25 == 1 && a11 == 0) && a17 <= 8) && a19 == 1) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1) || (a17 <= 8 && a28 <= 10)) || (((a25 == 1 && a11 == 0) && a17 <= 8) && a19 == 1) RESULT: Ultimate proved your program to be correct! [2022-11-16 20:12:46,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59c377e7-33d3-4857-92ae-c6886ebaa8d5/bin/utaipan-Xvt2sAort0/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