./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur --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 46dda72cbacea7804179bc67e21a7607713ae67e303b365119c911cce7c0e646 --- 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-38b53e6 [2022-11-26 00:10:56,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:10:56,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:10:56,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:10:56,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:10:56,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:10:56,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:10:56,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:10:56,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:10:56,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:10:56,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:10:56,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:10:56,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:10:56,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:10:56,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:10:56,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:10:56,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:10:56,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:10:56,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:10:56,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:10:56,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:10:56,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:10:56,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:10:56,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:10:56,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:10:56,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:10:56,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:10:56,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:10:56,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:10:56,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:10:56,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:10:56,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:10:56,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:10:56,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:10:56,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:10:56,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:10:56,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:10:56,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:10:56,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:10:56,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:10:56,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:10:56,218 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:10:56,283 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:10:56,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:10:56,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:10:56,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:10:56,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:10:56,287 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:10:56,287 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:10:56,288 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:10:56,288 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:10:56,288 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:10:56,290 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:10:56,290 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:10:56,290 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:10:56,291 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:10:56,291 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:10:56,291 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:10:56,292 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:10:56,292 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:10:56,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:10:56,294 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:10:56,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:10:56,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:10:56,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:10:56,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:10:56,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:10:56,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:10:56,297 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:10:56,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:10:56,298 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:10:56,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:10:56,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:10:56,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:10:56,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:10:56,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:10:56,300 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:10:56,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:10:56,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:10:56,301 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:10:56,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:10:56,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:10:56,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:10:56,304 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_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46dda72cbacea7804179bc67e21a7607713ae67e303b365119c911cce7c0e646 [2022-11-26 00:10:56,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:10:56,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:10:56,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:10:56,649 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:10:56,650 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:10:56,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-11-26 00:10:59,751 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:11:00,113 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:11:00,113 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-11-26 00:11:00,128 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/data/0963ce348/b163b5923f1b4d1a98771e827a9d453c/FLAGd42ff2706 [2022-11-26 00:11:00,162 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/data/0963ce348/b163b5923f1b4d1a98771e827a9d453c [2022-11-26 00:11:00,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:11:00,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:11:00,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:11:00,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:11:00,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:11:00,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:11:00" (1/1) ... [2022-11-26 00:11:00,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3727cc82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:00, skipping insertion in model container [2022-11-26 00:11:00,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:11:00" (1/1) ... [2022-11-26 00:11:00,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:11:00,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:11:00,587 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[6199,6212] [2022-11-26 00:11:00,623 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[9205,9218] [2022-11-26 00:11:00,658 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12265,12278] [2022-11-26 00:11:00,700 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[15172,15185] [2022-11-26 00:11:00,738 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[18387,18400] [2022-11-26 00:11:00,754 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[21499,21512] [2022-11-26 00:11:00,770 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[24550,24563] [2022-11-26 00:11:00,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:11:00,818 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:11:00,853 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[6199,6212] [2022-11-26 00:11:00,865 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[9205,9218] [2022-11-26 00:11:00,877 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12265,12278] [2022-11-26 00:11:00,888 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[15172,15185] [2022-11-26 00:11:00,900 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[18387,18400] [2022-11-26 00:11:00,912 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[21499,21512] [2022-11-26 00:11:00,944 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[24550,24563] [2022-11-26 00:11:00,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:11:01,007 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:11:01,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:01 WrapperNode [2022-11-26 00:11:01,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:11:01,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:11:01,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:11:01,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:11:01,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:01" (1/1) ... [2022-11-26 00:11:01,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:01" (1/1) ... [2022-11-26 00:11:01,109 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1332 [2022-11-26 00:11:01,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:11:01,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:11:01,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:11:01,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:11:01,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:01" (1/1) ... [2022-11-26 00:11:01,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:01" (1/1) ... [2022-11-26 00:11:01,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:01" (1/1) ... [2022-11-26 00:11:01,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:01" (1/1) ... [2022-11-26 00:11:01,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:01" (1/1) ... [2022-11-26 00:11:01,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:01" (1/1) ... [2022-11-26 00:11:01,165 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:01" (1/1) ... [2022-11-26 00:11:01,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:01" (1/1) ... [2022-11-26 00:11:01,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:11:01,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:11:01,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:11:01,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:11:01,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:01" (1/1) ... [2022-11-26 00:11:01,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:11:01,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:11:01,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:11:01,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:11:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:11:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:11:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:11:01,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:11:01,520 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:11:01,522 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:11:02,737 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:11:02,844 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:11:02,844 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:11:02,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:11:02 BoogieIcfgContainer [2022-11-26 00:11:02,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:11:02,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:11:02,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:11:02,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:11:02,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:11:00" (1/3) ... [2022-11-26 00:11:02,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a7773c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:11:02, skipping insertion in model container [2022-11-26 00:11:02,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:11:01" (2/3) ... [2022-11-26 00:11:02,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a7773c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:11:02, skipping insertion in model container [2022-11-26 00:11:02,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:11:02" (3/3) ... [2022-11-26 00:11:02,890 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-11-26 00:11:02,933 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:11:02,933 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-26 00:11:03,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:11:03,033 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;@10346172, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:11:03,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-26 00:11:03,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 264 states, 256 states have (on average 1.796875) internal successors, (460), 263 states have internal predecessors, (460), 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) [2022-11-26 00:11:03,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-26 00:11:03,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:03,065 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] [2022-11-26 00:11:03,065 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:03,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:03,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1191779176, now seen corresponding path program 1 times [2022-11-26 00:11:03,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:03,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473811233] [2022-11-26 00:11:03,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:03,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:03,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:03,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473811233] [2022-11-26 00:11:03,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473811233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:03,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:03,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:11:03,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38256140] [2022-11-26 00:11:03,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:03,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:11:03,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:03,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:11:03,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:11:03,823 INFO L87 Difference]: Start difference. First operand has 264 states, 256 states have (on average 1.796875) internal successors, (460), 263 states have internal predecessors, (460), 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 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-26 00:11:04,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:04,337 INFO L93 Difference]: Finished difference Result 361 states and 607 transitions. [2022-11-26 00:11:04,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:11:04,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2022-11-26 00:11:04,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:04,359 INFO L225 Difference]: With dead ends: 361 [2022-11-26 00:11:04,359 INFO L226 Difference]: Without dead ends: 230 [2022-11-26 00:11:04,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:11:04,371 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 1077 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:04,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 271 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:11:04,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-26 00:11:04,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-11-26 00:11:04,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 223 states have (on average 1.2331838565022422) internal successors, (275), 229 states have internal predecessors, (275), 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) [2022-11-26 00:11:04,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 275 transitions. [2022-11-26 00:11:04,450 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 275 transitions. Word has length 47 [2022-11-26 00:11:04,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:04,450 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 275 transitions. [2022-11-26 00:11:04,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-26 00:11:04,451 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 275 transitions. [2022-11-26 00:11:04,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-26 00:11:04,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:04,453 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] [2022-11-26 00:11:04,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:11:04,454 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:04,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:04,455 INFO L85 PathProgramCache]: Analyzing trace with hash 520818139, now seen corresponding path program 1 times [2022-11-26 00:11:04,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:04,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113194773] [2022-11-26 00:11:04,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:04,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:04,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:04,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:04,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113194773] [2022-11-26 00:11:04,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113194773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:04,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:04,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:11:04,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921867705] [2022-11-26 00:11:04,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:04,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:11:04,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:04,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:11:04,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:11:04,638 INFO L87 Difference]: Start difference. First operand 230 states and 275 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-26 00:11:04,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:04,862 INFO L93 Difference]: Finished difference Result 285 states and 338 transitions. [2022-11-26 00:11:04,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:11:04,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2022-11-26 00:11:04,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:04,866 INFO L225 Difference]: With dead ends: 285 [2022-11-26 00:11:04,866 INFO L226 Difference]: Without dead ends: 172 [2022-11-26 00:11:04,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:11:04,868 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 566 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:04,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 127 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:11:04,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-26 00:11:04,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2022-11-26 00:11:04,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 165 states have (on average 1.2242424242424241) internal successors, (202), 171 states have internal predecessors, (202), 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) [2022-11-26 00:11:04,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 202 transitions. [2022-11-26 00:11:04,887 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 202 transitions. Word has length 47 [2022-11-26 00:11:04,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:04,887 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 202 transitions. [2022-11-26 00:11:04,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-26 00:11:04,888 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 202 transitions. [2022-11-26 00:11:04,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-26 00:11:04,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:04,889 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] [2022-11-26 00:11:04,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:11:04,890 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:04,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:04,890 INFO L85 PathProgramCache]: Analyzing trace with hash 45954227, now seen corresponding path program 1 times [2022-11-26 00:11:04,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:04,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914474101] [2022-11-26 00:11:04,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:04,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:05,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:05,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914474101] [2022-11-26 00:11:05,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914474101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:05,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:05,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:11:05,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087906439] [2022-11-26 00:11:05,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:05,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:11:05,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:05,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:11:05,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:11:05,045 INFO L87 Difference]: Start difference. First operand 172 states and 202 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-26 00:11:05,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:05,290 INFO L93 Difference]: Finished difference Result 314 states and 374 transitions. [2022-11-26 00:11:05,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:11:05,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2022-11-26 00:11:05,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:05,293 INFO L225 Difference]: With dead ends: 314 [2022-11-26 00:11:05,294 INFO L226 Difference]: Without dead ends: 224 [2022-11-26 00:11:05,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:11:05,302 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 625 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:05,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 180 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:11:05,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-26 00:11:05,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 199. [2022-11-26 00:11:05,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 192 states have (on average 1.2552083333333333) internal successors, (241), 198 states have internal predecessors, (241), 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) [2022-11-26 00:11:05,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 241 transitions. [2022-11-26 00:11:05,352 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 241 transitions. Word has length 47 [2022-11-26 00:11:05,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:05,353 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 241 transitions. [2022-11-26 00:11:05,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-26 00:11:05,354 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 241 transitions. [2022-11-26 00:11:05,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-26 00:11:05,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:05,361 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] [2022-11-26 00:11:05,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:11:05,362 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:05,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:05,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1209610819, now seen corresponding path program 1 times [2022-11-26 00:11:05,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:05,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870374794] [2022-11-26 00:11:05,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:05,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:05,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:05,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870374794] [2022-11-26 00:11:05,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870374794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:05,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:05,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:11:05,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572151969] [2022-11-26 00:11:05,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:05,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:11:05,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:05,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:11:05,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:11:05,774 INFO L87 Difference]: Start difference. First operand 199 states and 241 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 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) [2022-11-26 00:11:06,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:06,161 INFO L93 Difference]: Finished difference Result 400 states and 485 transitions. [2022-11-26 00:11:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:11:06,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 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 49 [2022-11-26 00:11:06,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:06,163 INFO L225 Difference]: With dead ends: 400 [2022-11-26 00:11:06,164 INFO L226 Difference]: Without dead ends: 298 [2022-11-26 00:11:06,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:11:06,165 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 670 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:06,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 374 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:11:06,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-26 00:11:06,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 199. [2022-11-26 00:11:06,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 192 states have (on average 1.25) internal successors, (240), 198 states have internal predecessors, (240), 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) [2022-11-26 00:11:06,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 240 transitions. [2022-11-26 00:11:06,197 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 240 transitions. Word has length 49 [2022-11-26 00:11:06,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:06,197 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 240 transitions. [2022-11-26 00:11:06,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 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) [2022-11-26 00:11:06,198 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 240 transitions. [2022-11-26 00:11:06,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-26 00:11:06,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:06,198 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] [2022-11-26 00:11:06,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:11:06,199 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:06,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:06,200 INFO L85 PathProgramCache]: Analyzing trace with hash 754421757, now seen corresponding path program 1 times [2022-11-26 00:11:06,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:06,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622466561] [2022-11-26 00:11:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:06,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:06,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:06,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:06,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622466561] [2022-11-26 00:11:06,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622466561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:06,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:06,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:11:06,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997660446] [2022-11-26 00:11:06,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:06,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:11:06,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:06,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:11:06,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:11:06,578 INFO L87 Difference]: Start difference. First operand 199 states and 240 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 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) [2022-11-26 00:11:07,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:07,198 INFO L93 Difference]: Finished difference Result 443 states and 550 transitions. [2022-11-26 00:11:07,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:11:07,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 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 49 [2022-11-26 00:11:07,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:07,206 INFO L225 Difference]: With dead ends: 443 [2022-11-26 00:11:07,206 INFO L226 Difference]: Without dead ends: 437 [2022-11-26 00:11:07,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-26 00:11:07,215 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 599 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:07,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 577 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:11:07,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-11-26 00:11:07,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 199. [2022-11-26 00:11:07,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 192 states have (on average 1.2447916666666667) internal successors, (239), 198 states have internal predecessors, (239), 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) [2022-11-26 00:11:07,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 239 transitions. [2022-11-26 00:11:07,262 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 239 transitions. Word has length 49 [2022-11-26 00:11:07,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:07,263 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 239 transitions. [2022-11-26 00:11:07,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 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) [2022-11-26 00:11:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 239 transitions. [2022-11-26 00:11:07,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-26 00:11:07,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:07,266 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] [2022-11-26 00:11:07,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:11:07,266 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:07,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:07,267 INFO L85 PathProgramCache]: Analyzing trace with hash -175435075, now seen corresponding path program 1 times [2022-11-26 00:11:07,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:07,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197259831] [2022-11-26 00:11:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:07,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:07,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:07,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:07,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197259831] [2022-11-26 00:11:07,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197259831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:07,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:07,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:11:07,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82455836] [2022-11-26 00:11:07,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:07,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:11:07,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:07,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:11:07,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:11:07,720 INFO L87 Difference]: Start difference. First operand 199 states and 239 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 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) [2022-11-26 00:11:08,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:08,440 INFO L93 Difference]: Finished difference Result 342 states and 423 transitions. [2022-11-26 00:11:08,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:11:08,441 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 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 49 [2022-11-26 00:11:08,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:08,445 INFO L225 Difference]: With dead ends: 342 [2022-11-26 00:11:08,446 INFO L226 Difference]: Without dead ends: 265 [2022-11-26 00:11:08,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-26 00:11:08,451 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 457 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:08,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 591 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:11:08,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-26 00:11:08,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 199. [2022-11-26 00:11:08,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 192 states have (on average 1.2395833333333333) internal successors, (238), 198 states have internal predecessors, (238), 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) [2022-11-26 00:11:08,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 238 transitions. [2022-11-26 00:11:08,500 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 238 transitions. Word has length 49 [2022-11-26 00:11:08,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:08,503 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 238 transitions. [2022-11-26 00:11:08,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 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) [2022-11-26 00:11:08,503 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 238 transitions. [2022-11-26 00:11:08,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-26 00:11:08,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:08,505 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] [2022-11-26 00:11:08,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:11:08,505 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:08,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:08,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1893856322, now seen corresponding path program 1 times [2022-11-26 00:11:08,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:08,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794585698] [2022-11-26 00:11:08,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:08,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:09,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:09,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:09,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794585698] [2022-11-26 00:11:09,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794585698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:09,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:09,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-26 00:11:09,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989736514] [2022-11-26 00:11:09,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:09,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 00:11:09,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:09,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 00:11:09,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:11:09,356 INFO L87 Difference]: Start difference. First operand 199 states and 238 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 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) [2022-11-26 00:11:10,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:10,509 INFO L93 Difference]: Finished difference Result 397 states and 496 transitions. [2022-11-26 00:11:10,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:11:10,510 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 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 50 [2022-11-26 00:11:10,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:10,511 INFO L225 Difference]: With dead ends: 397 [2022-11-26 00:11:10,511 INFO L226 Difference]: Without dead ends: 327 [2022-11-26 00:11:10,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-26 00:11:10,513 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 722 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:10,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1430 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:11:10,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-26 00:11:10,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 187. [2022-11-26 00:11:10,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 181 states have (on average 1.2375690607734806) internal successors, (224), 186 states have internal predecessors, (224), 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) [2022-11-26 00:11:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 224 transitions. [2022-11-26 00:11:10,577 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 224 transitions. Word has length 50 [2022-11-26 00:11:10,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:10,577 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 224 transitions. [2022-11-26 00:11:10,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 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) [2022-11-26 00:11:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 224 transitions. [2022-11-26 00:11:10,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-26 00:11:10,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:10,579 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] [2022-11-26 00:11:10,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:11:10,579 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:10,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:10,581 INFO L85 PathProgramCache]: Analyzing trace with hash 883237538, now seen corresponding path program 1 times [2022-11-26 00:11:10,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:10,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189195547] [2022-11-26 00:11:10,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:10,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:11,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:11,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189195547] [2022-11-26 00:11:11,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189195547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:11,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:11,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-26 00:11:11,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4639758] [2022-11-26 00:11:11,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:11,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 00:11:11,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:11,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 00:11:11,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:11:11,248 INFO L87 Difference]: Start difference. First operand 187 states and 224 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 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) [2022-11-26 00:11:12,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:12,099 INFO L93 Difference]: Finished difference Result 341 states and 422 transitions. [2022-11-26 00:11:12,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:11:12,101 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 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 51 [2022-11-26 00:11:12,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:12,104 INFO L225 Difference]: With dead ends: 341 [2022-11-26 00:11:12,104 INFO L226 Difference]: Without dead ends: 324 [2022-11-26 00:11:12,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2022-11-26 00:11:12,106 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 709 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:12,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 1415 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:11:12,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-11-26 00:11:12,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 170. [2022-11-26 00:11:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 166 states have (on average 1.2289156626506024) internal successors, (204), 169 states have internal predecessors, (204), 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) [2022-11-26 00:11:12,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 204 transitions. [2022-11-26 00:11:12,169 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 204 transitions. Word has length 51 [2022-11-26 00:11:12,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:12,169 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 204 transitions. [2022-11-26 00:11:12,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 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) [2022-11-26 00:11:12,170 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 204 transitions. [2022-11-26 00:11:12,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-26 00:11:12,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:12,171 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] [2022-11-26 00:11:12,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:11:12,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:12,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:12,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1387229666, now seen corresponding path program 1 times [2022-11-26 00:11:12,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:12,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319844549] [2022-11-26 00:11:12,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:12,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:12,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:12,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319844549] [2022-11-26 00:11:12,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319844549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:12,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:12,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:11:12,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623486055] [2022-11-26 00:11:12,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:12,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:11:12,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:12,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:11:12,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:11:12,719 INFO L87 Difference]: Start difference. First operand 170 states and 204 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 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) [2022-11-26 00:11:13,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:13,636 INFO L93 Difference]: Finished difference Result 368 states and 461 transitions. [2022-11-26 00:11:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:11:13,637 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 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 51 [2022-11-26 00:11:13,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:13,639 INFO L225 Difference]: With dead ends: 368 [2022-11-26 00:11:13,639 INFO L226 Difference]: Without dead ends: 286 [2022-11-26 00:11:13,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2022-11-26 00:11:13,640 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 629 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:13,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 701 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:11:13,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-11-26 00:11:13,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 146. [2022-11-26 00:11:13,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 144 states have (on average 1.2222222222222223) internal successors, (176), 145 states have internal predecessors, (176), 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) [2022-11-26 00:11:13,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 176 transitions. [2022-11-26 00:11:13,704 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 176 transitions. Word has length 51 [2022-11-26 00:11:13,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:13,705 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 176 transitions. [2022-11-26 00:11:13,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 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) [2022-11-26 00:11:13,705 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 176 transitions. [2022-11-26 00:11:13,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-26 00:11:13,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:13,706 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] [2022-11-26 00:11:13,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 00:11:13,707 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:13,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:13,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1523929374, now seen corresponding path program 1 times [2022-11-26 00:11:13,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:13,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745731559] [2022-11-26 00:11:13,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:13,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:14,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:14,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:14,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745731559] [2022-11-26 00:11:14,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745731559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:14,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:14,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 00:11:14,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783841265] [2022-11-26 00:11:14,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:14,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:11:14,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:14,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:11:14,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:11:14,149 INFO L87 Difference]: Start difference. First operand 146 states and 176 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 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) [2022-11-26 00:11:14,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:14,723 INFO L93 Difference]: Finished difference Result 254 states and 313 transitions. [2022-11-26 00:11:14,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:11:14,724 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 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 53 [2022-11-26 00:11:14,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:14,725 INFO L225 Difference]: With dead ends: 254 [2022-11-26 00:11:14,725 INFO L226 Difference]: Without dead ends: 162 [2022-11-26 00:11:14,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:11:14,726 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 435 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:14,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 265 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:11:14,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-26 00:11:14,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 146. [2022-11-26 00:11:14,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 144 states have (on average 1.2083333333333333) internal successors, (174), 145 states have internal predecessors, (174), 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) [2022-11-26 00:11:14,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 174 transitions. [2022-11-26 00:11:14,782 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 174 transitions. Word has length 53 [2022-11-26 00:11:14,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:14,782 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 174 transitions. [2022-11-26 00:11:14,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 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) [2022-11-26 00:11:14,782 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 174 transitions. [2022-11-26 00:11:14,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-26 00:11:14,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:14,783 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] [2022-11-26 00:11:14,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-26 00:11:14,784 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:14,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:14,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1353414343, now seen corresponding path program 1 times [2022-11-26 00:11:14,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:14,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684683353] [2022-11-26 00:11:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:14,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:15,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:15,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:15,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684683353] [2022-11-26 00:11:15,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684683353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:15,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:15,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-26 00:11:15,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385150959] [2022-11-26 00:11:15,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:15,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-26 00:11:15,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:15,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-26 00:11:15,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:11:15,820 INFO L87 Difference]: Start difference. First operand 146 states and 174 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 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) [2022-11-26 00:11:17,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:17,465 INFO L93 Difference]: Finished difference Result 488 states and 618 transitions. [2022-11-26 00:11:17,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-26 00:11:17,465 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 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 55 [2022-11-26 00:11:17,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:17,468 INFO L225 Difference]: With dead ends: 488 [2022-11-26 00:11:17,468 INFO L226 Difference]: Without dead ends: 482 [2022-11-26 00:11:17,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2022-11-26 00:11:17,470 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 639 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:17,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 1749 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:11:17,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-11-26 00:11:17,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 153. [2022-11-26 00:11:17,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 151 states have (on average 1.2119205298013245) internal successors, (183), 152 states have internal predecessors, (183), 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) [2022-11-26 00:11:17,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 183 transitions. [2022-11-26 00:11:17,531 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 183 transitions. Word has length 55 [2022-11-26 00:11:17,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:17,531 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 183 transitions. [2022-11-26 00:11:17,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 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) [2022-11-26 00:11:17,531 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 183 transitions. [2022-11-26 00:11:17,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-26 00:11:17,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:17,532 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] [2022-11-26 00:11:17,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 00:11:17,533 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:17,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:17,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1713847366, now seen corresponding path program 1 times [2022-11-26 00:11:17,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:17,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894888073] [2022-11-26 00:11:17,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:17,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:19,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:19,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:19,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894888073] [2022-11-26 00:11:19,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894888073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:19,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:19,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-26 00:11:19,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875828750] [2022-11-26 00:11:19,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:19,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-26 00:11:19,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:19,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-26 00:11:19,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-26 00:11:19,202 INFO L87 Difference]: Start difference. First operand 153 states and 183 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 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) [2022-11-26 00:11:22,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:22,450 INFO L93 Difference]: Finished difference Result 487 states and 616 transitions. [2022-11-26 00:11:22,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-26 00:11:22,451 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 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 56 [2022-11-26 00:11:22,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:22,453 INFO L225 Difference]: With dead ends: 487 [2022-11-26 00:11:22,453 INFO L226 Difference]: Without dead ends: 481 [2022-11-26 00:11:22,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=208, Invalid=982, Unknown=0, NotChecked=0, Total=1190 [2022-11-26 00:11:22,455 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 460 mSDsluCounter, 2161 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 2363 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:22,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 2363 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:11:22,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-11-26 00:11:22,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 146. [2022-11-26 00:11:22,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 144 states have (on average 1.2013888888888888) internal successors, (173), 145 states have internal predecessors, (173), 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) [2022-11-26 00:11:22,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2022-11-26 00:11:22,524 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 56 [2022-11-26 00:11:22,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:22,525 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2022-11-26 00:11:22,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 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) [2022-11-26 00:11:22,525 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2022-11-26 00:11:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-26 00:11:22,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:22,533 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] [2022-11-26 00:11:22,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-26 00:11:22,533 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:22,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:22,534 INFO L85 PathProgramCache]: Analyzing trace with hash -576071502, now seen corresponding path program 1 times [2022-11-26 00:11:22,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:22,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559760442] [2022-11-26 00:11:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:22,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:23,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:23,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:23,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559760442] [2022-11-26 00:11:23,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559760442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:23,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:23,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-26 00:11:23,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195553573] [2022-11-26 00:11:23,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:23,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-26 00:11:23,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:23,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-26 00:11:23,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:11:23,458 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 states have internal predecessors, (56), 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) [2022-11-26 00:11:26,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:26,122 INFO L93 Difference]: Finished difference Result 816 states and 1043 transitions. [2022-11-26 00:11:26,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-26 00:11:26,122 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 states have internal predecessors, (56), 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 56 [2022-11-26 00:11:26,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:26,125 INFO L225 Difference]: With dead ends: 816 [2022-11-26 00:11:26,125 INFO L226 Difference]: Without dead ends: 810 [2022-11-26 00:11:26,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=206, Invalid=786, Unknown=0, NotChecked=0, Total=992 [2022-11-26 00:11:26,127 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 901 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 2981 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:26,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 2981 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:11:26,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2022-11-26 00:11:26,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 153. [2022-11-26 00:11:26,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 151 states have (on average 1.205298013245033) internal successors, (182), 152 states have internal predecessors, (182), 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) [2022-11-26 00:11:26,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 182 transitions. [2022-11-26 00:11:26,207 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 182 transitions. Word has length 56 [2022-11-26 00:11:26,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:26,207 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 182 transitions. [2022-11-26 00:11:26,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 states have internal predecessors, (56), 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) [2022-11-26 00:11:26,207 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 182 transitions. [2022-11-26 00:11:26,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-26 00:11:26,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:26,208 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] [2022-11-26 00:11:26,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-26 00:11:26,208 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:26,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:26,209 INFO L85 PathProgramCache]: Analyzing trace with hash 2029328315, now seen corresponding path program 1 times [2022-11-26 00:11:26,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:26,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214116688] [2022-11-26 00:11:26,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:26,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:27,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:27,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214116688] [2022-11-26 00:11:27,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214116688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:27,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:27,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-26 00:11:27,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217630322] [2022-11-26 00:11:27,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:27,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-26 00:11:27,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:27,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-26 00:11:27,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:11:27,131 INFO L87 Difference]: Start difference. First operand 153 states and 182 transitions. Second operand has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 17 states have internal predecessors, (57), 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) [2022-11-26 00:11:28,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:28,745 INFO L93 Difference]: Finished difference Result 267 states and 326 transitions. [2022-11-26 00:11:28,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-26 00:11:28,745 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 17 states have internal predecessors, (57), 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 57 [2022-11-26 00:11:28,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:28,747 INFO L225 Difference]: With dead ends: 267 [2022-11-26 00:11:28,747 INFO L226 Difference]: Without dead ends: 261 [2022-11-26 00:11:28,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2022-11-26 00:11:28,748 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 217 mSDsluCounter, 1953 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:28,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 2124 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 00:11:28,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-11-26 00:11:28,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 140. [2022-11-26 00:11:28,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.2014388489208634) internal successors, (167), 139 states have internal predecessors, (167), 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) [2022-11-26 00:11:28,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 167 transitions. [2022-11-26 00:11:28,832 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 167 transitions. Word has length 57 [2022-11-26 00:11:28,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:28,832 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 167 transitions. [2022-11-26 00:11:28,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 17 states have internal predecessors, (57), 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) [2022-11-26 00:11:28,833 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 167 transitions. [2022-11-26 00:11:28,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-26 00:11:28,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:28,833 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] [2022-11-26 00:11:28,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-26 00:11:28,834 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:28,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:28,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1741056226, now seen corresponding path program 1 times [2022-11-26 00:11:28,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:28,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597798626] [2022-11-26 00:11:28,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:28,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:28,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:28,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:28,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597798626] [2022-11-26 00:11:28,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597798626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:28,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:28,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:11:28,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74091958] [2022-11-26 00:11:28,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:28,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:11:28,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:28,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:11:28,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:11:28,958 INFO L87 Difference]: Start difference. First operand 140 states and 167 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2022-11-26 00:11:29,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:29,133 INFO L93 Difference]: Finished difference Result 207 states and 256 transitions. [2022-11-26 00:11:29,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:11:29,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2022-11-26 00:11:29,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:29,135 INFO L225 Difference]: With dead ends: 207 [2022-11-26 00:11:29,136 INFO L226 Difference]: Without dead ends: 177 [2022-11-26 00:11:29,136 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 [2022-11-26 00:11:29,137 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 43 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:29,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 193 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:11:29,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-26 00:11:29,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 167. [2022-11-26 00:11:29,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.216867469879518) internal successors, (202), 166 states have internal predecessors, (202), 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) [2022-11-26 00:11:29,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 202 transitions. [2022-11-26 00:11:29,251 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 202 transitions. Word has length 68 [2022-11-26 00:11:29,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:29,251 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 202 transitions. [2022-11-26 00:11:29,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2022-11-26 00:11:29,251 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 202 transitions. [2022-11-26 00:11:29,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-26 00:11:29,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:29,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:11:29,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-26 00:11:29,263 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:29,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:29,263 INFO L85 PathProgramCache]: Analyzing trace with hash 171874550, now seen corresponding path program 1 times [2022-11-26 00:11:29,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:29,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829695765] [2022-11-26 00:11:29,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:29,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:29,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:29,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:29,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829695765] [2022-11-26 00:11:29,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829695765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:29,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:29,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:11:29,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614757029] [2022-11-26 00:11:29,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:29,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:11:29,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:11:29,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:11:29,429 INFO L87 Difference]: Start difference. First operand 167 states and 202 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:11:29,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:29,660 INFO L93 Difference]: Finished difference Result 331 states and 422 transitions. [2022-11-26 00:11:29,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:11:29,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-26 00:11:29,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:29,661 INFO L225 Difference]: With dead ends: 331 [2022-11-26 00:11:29,662 INFO L226 Difference]: Without dead ends: 249 [2022-11-26 00:11:29,662 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 [2022-11-26 00:11:29,663 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 36 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:29,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 194 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:11:29,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-26 00:11:29,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 235. [2022-11-26 00:11:29,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.2521367521367521) internal successors, (293), 234 states have internal predecessors, (293), 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) [2022-11-26 00:11:29,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 293 transitions. [2022-11-26 00:11:29,804 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 293 transitions. Word has length 71 [2022-11-26 00:11:29,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:29,804 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 293 transitions. [2022-11-26 00:11:29,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:11:29,805 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 293 transitions. [2022-11-26 00:11:29,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-26 00:11:29,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:29,806 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] [2022-11-26 00:11:29,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-26 00:11:29,806 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:29,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:29,807 INFO L85 PathProgramCache]: Analyzing trace with hash 708385023, now seen corresponding path program 1 times [2022-11-26 00:11:29,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:29,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27579102] [2022-11-26 00:11:29,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:29,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:29,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:29,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:29,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:29,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27579102] [2022-11-26 00:11:29,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27579102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:29,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:29,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:11:29,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789540739] [2022-11-26 00:11:29,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:29,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:11:29,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:29,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:11:29,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:11:29,907 INFO L87 Difference]: Start difference. First operand 235 states and 293 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2022-11-26 00:11:30,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:30,287 INFO L93 Difference]: Finished difference Result 535 states and 695 transitions. [2022-11-26 00:11:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:11:30,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2022-11-26 00:11:30,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:30,290 INFO L225 Difference]: With dead ends: 535 [2022-11-26 00:11:30,290 INFO L226 Difference]: Without dead ends: 385 [2022-11-26 00:11:30,290 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 [2022-11-26 00:11:30,291 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 26 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:30,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 195 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:11:30,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-26 00:11:30,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 359. [2022-11-26 00:11:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.276536312849162) internal successors, (457), 358 states have internal predecessors, (457), 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) [2022-11-26 00:11:30,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 457 transitions. [2022-11-26 00:11:30,615 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 457 transitions. Word has length 74 [2022-11-26 00:11:30,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:30,615 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 457 transitions. [2022-11-26 00:11:30,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2022-11-26 00:11:30,615 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 457 transitions. [2022-11-26 00:11:30,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-26 00:11:30,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:30,617 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] [2022-11-26 00:11:30,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-26 00:11:30,617 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:30,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:30,618 INFO L85 PathProgramCache]: Analyzing trace with hash -154453370, now seen corresponding path program 1 times [2022-11-26 00:11:30,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:30,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868930328] [2022-11-26 00:11:30,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:30,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:30,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:30,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868930328] [2022-11-26 00:11:30,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868930328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:30,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:30,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:11:30,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359411187] [2022-11-26 00:11:30,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:30,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:11:30,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:30,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:11:30,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:11:30,707 INFO L87 Difference]: Start difference. First operand 359 states and 457 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:11:31,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:31,680 INFO L93 Difference]: Finished difference Result 1214 states and 1582 transitions. [2022-11-26 00:11:31,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:11:31,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-26 00:11:31,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:31,684 INFO L225 Difference]: With dead ends: 1214 [2022-11-26 00:11:31,684 INFO L226 Difference]: Without dead ends: 940 [2022-11-26 00:11:31,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:11:31,685 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 308 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:31,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 395 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:11:31,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2022-11-26 00:11:32,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 543. [2022-11-26 00:11:32,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 542 states have (on average 1.2712177121771218) internal successors, (689), 542 states have internal predecessors, (689), 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) [2022-11-26 00:11:32,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 689 transitions. [2022-11-26 00:11:32,130 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 689 transitions. Word has length 77 [2022-11-26 00:11:32,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:32,130 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 689 transitions. [2022-11-26 00:11:32,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:11:32,131 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 689 transitions. [2022-11-26 00:11:32,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-26 00:11:32,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:32,132 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] [2022-11-26 00:11:32,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-26 00:11:32,133 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:32,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:32,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1458319963, now seen corresponding path program 1 times [2022-11-26 00:11:32,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:32,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875816982] [2022-11-26 00:11:32,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:32,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:32,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:32,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875816982] [2022-11-26 00:11:32,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875816982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:32,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:32,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:11:32,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430384827] [2022-11-26 00:11:32,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:32,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:11:32,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:32,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:11:32,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:11:32,193 INFO L87 Difference]: Start difference. First operand 543 states and 689 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-11-26 00:11:32,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:32,934 INFO L93 Difference]: Finished difference Result 1115 states and 1435 transitions. [2022-11-26 00:11:32,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:11:32,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2022-11-26 00:11:32,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:32,937 INFO L225 Difference]: With dead ends: 1115 [2022-11-26 00:11:32,938 INFO L226 Difference]: Without dead ends: 657 [2022-11-26 00:11:32,938 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 [2022-11-26 00:11:32,939 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 52 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:32,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 152 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:11:32,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-11-26 00:11:33,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 655. [2022-11-26 00:11:33,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 654 states have (on average 1.264525993883792) internal successors, (827), 654 states have internal predecessors, (827), 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) [2022-11-26 00:11:33,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 827 transitions. [2022-11-26 00:11:33,535 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 827 transitions. Word has length 79 [2022-11-26 00:11:33,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:33,535 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 827 transitions. [2022-11-26 00:11:33,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-11-26 00:11:33,536 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 827 transitions. [2022-11-26 00:11:33,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-26 00:11:33,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:33,537 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] [2022-11-26 00:11:33,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-26 00:11:33,537 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:33,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:33,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1401985182, now seen corresponding path program 1 times [2022-11-26 00:11:33,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:33,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417860029] [2022-11-26 00:11:33,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:33,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:33,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:33,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417860029] [2022-11-26 00:11:33,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417860029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:33,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:33,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:11:33,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523637467] [2022-11-26 00:11:33,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:33,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:11:33,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:33,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:11:33,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:11:33,596 INFO L87 Difference]: Start difference. First operand 655 states and 827 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-11-26 00:11:34,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:34,313 INFO L93 Difference]: Finished difference Result 1227 states and 1563 transitions. [2022-11-26 00:11:34,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:11:34,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2022-11-26 00:11:34,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:34,316 INFO L225 Difference]: With dead ends: 1227 [2022-11-26 00:11:34,316 INFO L226 Difference]: Without dead ends: 657 [2022-11-26 00:11:34,322 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 [2022-11-26 00:11:34,325 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 24 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:34,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 152 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:11:34,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-11-26 00:11:35,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 655. [2022-11-26 00:11:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 654 states have (on average 1.261467889908257) internal successors, (825), 654 states have internal predecessors, (825), 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) [2022-11-26 00:11:35,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 825 transitions. [2022-11-26 00:11:35,015 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 825 transitions. Word has length 79 [2022-11-26 00:11:35,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:35,017 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 825 transitions. [2022-11-26 00:11:35,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-11-26 00:11:35,018 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 825 transitions. [2022-11-26 00:11:35,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-26 00:11:35,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:35,019 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] [2022-11-26 00:11:35,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-26 00:11:35,020 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:35,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:35,020 INFO L85 PathProgramCache]: Analyzing trace with hash 246754823, now seen corresponding path program 1 times [2022-11-26 00:11:35,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:35,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225310610] [2022-11-26 00:11:35,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:35,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:35,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:35,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:35,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225310610] [2022-11-26 00:11:35,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225310610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:35,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:35,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:11:35,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941521216] [2022-11-26 00:11:35,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:35,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:11:35,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:35,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:11:35,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:11:35,251 INFO L87 Difference]: Start difference. First operand 655 states and 825 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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) [2022-11-26 00:11:36,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:36,504 INFO L93 Difference]: Finished difference Result 862 states and 1073 transitions. [2022-11-26 00:11:36,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:11:36,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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 [2022-11-26 00:11:36,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:36,508 INFO L225 Difference]: With dead ends: 862 [2022-11-26 00:11:36,508 INFO L226 Difference]: Without dead ends: 860 [2022-11-26 00:11:36,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:11:36,510 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 222 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:36,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 611 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:11:36,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-11-26 00:11:37,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 655. [2022-11-26 00:11:37,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 654 states have (on average 1.2431192660550459) internal successors, (813), 654 states have internal predecessors, (813), 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) [2022-11-26 00:11:37,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 813 transitions. [2022-11-26 00:11:37,135 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 813 transitions. Word has length 80 [2022-11-26 00:11:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:37,135 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 813 transitions. [2022-11-26 00:11:37,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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) [2022-11-26 00:11:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 813 transitions. [2022-11-26 00:11:37,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-26 00:11:37,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:37,137 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-11-26 00:11:37,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-26 00:11:37,138 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:37,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:37,139 INFO L85 PathProgramCache]: Analyzing trace with hash -323788595, now seen corresponding path program 1 times [2022-11-26 00:11:37,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:37,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865763806] [2022-11-26 00:11:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:37,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:39,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:39,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865763806] [2022-11-26 00:11:39,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865763806] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:11:39,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63119526] [2022-11-26 00:11:39,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:39,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:11:39,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:11:39,972 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:11:39,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:11:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:40,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-26 00:11:40,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:11:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-26 00:11:41,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:11:41,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63119526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:41,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:11:41,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [25] total 31 [2022-11-26 00:11:41,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210003510] [2022-11-26 00:11:41,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:41,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:11:41,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:41,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:11:41,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2022-11-26 00:11:41,044 INFO L87 Difference]: Start difference. First operand 655 states and 813 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 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) [2022-11-26 00:11:43,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:43,384 INFO L93 Difference]: Finished difference Result 1612 states and 2017 transitions. [2022-11-26 00:11:43,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:11:43,385 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 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 93 [2022-11-26 00:11:43,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:43,388 INFO L225 Difference]: With dead ends: 1612 [2022-11-26 00:11:43,388 INFO L226 Difference]: Without dead ends: 1025 [2022-11-26 00:11:43,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2022-11-26 00:11:43,392 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 260 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:43,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 289 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:11:43,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2022-11-26 00:11:44,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 655. [2022-11-26 00:11:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 654 states have (on average 1.2400611620795108) internal successors, (811), 654 states have internal predecessors, (811), 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) [2022-11-26 00:11:44,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 811 transitions. [2022-11-26 00:11:44,107 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 811 transitions. Word has length 93 [2022-11-26 00:11:44,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:44,107 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 811 transitions. [2022-11-26 00:11:44,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 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) [2022-11-26 00:11:44,108 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 811 transitions. [2022-11-26 00:11:44,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-26 00:11:44,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:44,109 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:11:44,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-26 00:11:44,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:11:44,316 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:11:44,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:44,316 INFO L85 PathProgramCache]: Analyzing trace with hash 262727506, now seen corresponding path program 1 times [2022-11-26 00:11:44,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:44,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152219212] [2022-11-26 00:11:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:44,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:46,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:46,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152219212] [2022-11-26 00:11:46,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152219212] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:11:46,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784162917] [2022-11-26 00:11:46,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:46,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:11:46,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:11:46,865 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:11:46,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:11:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:47,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-26 00:11:47,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:11:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:53,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:12:26,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:12:26,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784162917] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:12:26,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [979226069] [2022-11-26 00:12:26,216 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2022-11-26 00:12:26,216 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:12:26,220 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:12:26,227 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:12:26,227 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:12:27,558 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:12:27,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:12:27,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-26 00:12:27,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:27,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:27,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:12:27,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-26 00:12:29,895 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:13:17,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [979226069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:13:17,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:13:17,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [25, 28, 28] total 112 [2022-11-26 00:13:17,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950685723] [2022-11-26 00:13:17,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:13:17,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-26 00:13:17,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:17,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-26 00:13:17,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1707, Invalid=10949, Unknown=0, NotChecked=0, Total=12656 [2022-11-26 00:13:17,764 INFO L87 Difference]: Start difference. First operand 655 states and 811 transitions. Second operand has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 35 states have internal predecessors, (88), 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) [2022-11-26 00:13:23,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:23,793 INFO L93 Difference]: Finished difference Result 1244 states and 1552 transitions. [2022-11-26 00:13:23,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-26 00:13:23,794 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 35 states have internal predecessors, (88), 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 [2022-11-26 00:13:23,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:23,797 INFO L225 Difference]: With dead ends: 1244 [2022-11-26 00:13:23,797 INFO L226 Difference]: Without dead ends: 663 [2022-11-26 00:13:23,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 180 SyntacticMatches, 17 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6094 ImplicationChecksByTransitivity, 59.9s TimeCoverageRelationStatistics Valid=1707, Invalid=10949, Unknown=0, NotChecked=0, Total=12656 [2022-11-26 00:13:23,802 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 5 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:23,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 114 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-26 00:13:23,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-11-26 00:13:24,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 661. [2022-11-26 00:13:24,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 1.2378787878787878) internal successors, (817), 660 states have internal predecessors, (817), 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) [2022-11-26 00:13:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 817 transitions. [2022-11-26 00:13:24,563 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 817 transitions. Word has length 95 [2022-11-26 00:13:24,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:24,563 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 817 transitions. [2022-11-26 00:13:24,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 35 states have internal predecessors, (88), 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) [2022-11-26 00:13:24,564 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 817 transitions. [2022-11-26 00:13:24,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-26 00:13:24,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:24,566 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:13:24,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:13:24,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:24,773 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:13:24,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:24,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1661363838, now seen corresponding path program 1 times [2022-11-26 00:13:24,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:24,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364898654] [2022-11-26 00:13:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:24,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:27,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:27,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:27,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364898654] [2022-11-26 00:13:27,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364898654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:13:27,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217221978] [2022-11-26 00:13:27,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:27,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:27,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:13:27,691 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:13:27,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:13:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:27,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-26 00:13:27,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:13:32,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:32,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:13:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:55,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217221978] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:13:55,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1620020653] [2022-11-26 00:13:55,302 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2022-11-26 00:13:55,302 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:13:55,303 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:13:55,303 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:13:55,303 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:13:56,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:56,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:56,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:13:56,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-26 00:13:56,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:13:56,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:13:56,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-26 00:15:31,721 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:16:43,228 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 507 DAG size of output: 345 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:16:49,888 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 509 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:17:03,013 WARN L233 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 513 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:17:41,432 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34129#(and (<= 1 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1|) (<= ~__return_94~0 1) (<= 0 ~id3~0) (<= ~__tmp_986_0~0 0) (<= 0 |ULTIMATE.start_main_~assert__arg~15#1|) (<= 0 (+ ~p3_new~0 1)) (<= 1 ~__return_94~0) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~1#1| 0) (= |ULTIMATE.start_main_~check__tmp~15#1| 1) (<= 0 |ULTIMATE.start_main_~__tmp_16~0#1|) (<= 0 ~mode1~0) (<= 0 ~__return_1167~0) (<= |ULTIMATE.start_main_~assert__arg~0#1| 1) (<= 1 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~9#1|) (<= ~__return_384~0 0) (<= 0 ~__tmp_986_0~0) (<= ~st2~0 1) (<= 0 ~__return_1180~0) (<= 0 |ULTIMATE.start_main_~check__tmp~16#1|) (<= 0 ~__return_356~0) (<= ~__return_328~0 0) (<= 0 ~id1~0) (<= ~__tmp_589_0~0 0) (<= ~__return_1180~0 0) (<= 0 ~__return_617~0) (<= 0 ~__return_1057~0) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~0#1| 1)) (<= ~__return_412~0 1) (<= 0 ~__return_328~0) (<= 0 ~__tmp_650_0~0) (<= ~__tmp_746_0~0 0) (<= (+ ~p1_new~0 1) 0) (<= |ULTIMATE.start_main_~main__c1~0#1| 1) (<= ~__return_965~0 0) (<= 0 ~__tmp_797_0~0) (<= 0 ~__tmp_516_0~0) (<= 0 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~6#1|) (<= ~__return_370~0 0) (<= |ULTIMATE.start_main_~node2____CPAchecker_TMP_0~0#1| 127) (<= ~__return_1315~0 1) (<= 0 ~__tmp_601_0~0) (<= 0 ~__tmp_589_0~0) (<= ~__tmp_601_0~0 0) (<= 0 ~mode3~0) (<= |ULTIMATE.start_main_~assert__arg~1#1| 1) (<= 0 ~__return_695~0) (<= 1 ~__tmp_544_0~0) (= |ULTIMATE.start_main_~check__tmp~0#1| 1) (<= 0 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~1#1|) (<= 0 ~__return_788~0) (<= ~__tmp_492_0~0 0) (<= 0 ~__return_370~0) (<= ~__return_398~0 0) (<= ~__return_535~0 1) (<= 0 |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~0#1|) (<= |#NULL.offset| 0) (<= ~mode2~0 1) (<= 0 ~st1~0) (<= 0 ~__return_398~0) (<= 1 ~__return_412~0) (<= 0 ~st2~0) (<= 0 ~__return_872~0) (<= ~p1~0 0) (<= 1 ~__return_535~0) (<= ~__return_main~0 0) (<= ~__return_1167~0 0) (<= ~mode3~0 1) (<= ~__tmp_516_0~0 0) (<= 0 ~p2~0) (<= ~__tmp_650_0~0 0) (<= 0 ~__tmp_504_0~0) (<= ~__tmp_638_0~0 0) (<= 0 ~send2~0) (<= 0 ~__tmp_815_0~0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~0#1| 1)) (<= ~id1~0 127) (= ~__return_342~0 0) (<= |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~0#1| 127) (<= ~__tmp_856_0~0 0) (<= ~__return_872~0 0) (<= 0 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~8#1|) (<= 0 |ULTIMATE.start_main_~node1__m1~1#1|) (<= ~st1~0 1) (<= |ULTIMATE.start_main_~__tmp_1~0#1| 1) (= ~__return_314~0 0) (<= ~__return_1057~0 0) (<= 0 ~__return_1315~0) (<= |ULTIMATE.start_main_~assert__arg~15#1| 1) (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1|) (<= 0 (+ ~p2_new~0 1)) (<= (+ |ULTIMATE.start_main_~node1__m1~0#1| 1) 0) (<= 2 |ULTIMATE.start_main_~main__i2~0#1|) (<= (+ ~nomsg~0 1) 0) (<= ~mode1~0 1) (<= ~__return_695~0 0) (<= (+ ~p2_new~0 1) 0) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~6#1| 0) (<= ~__return_356~0 0) (<= 0 |ULTIMATE.start_main_~node2____CPAchecker_TMP_0~0#1|) (<= 0 ~__return_384~0) (<= ~__return_788~0 0) (<= 0 |ULTIMATE.start_main_~node2__m2~2#1|) (<= |ULTIMATE.start_main_~node3__m3~8#1| 127) (<= 0 |ULTIMATE.start_main_~assert__arg~1#1|) (<= |ULTIMATE.start_main_~__tmp_16~0#1| 1) (<= 0 ~__return_main~0) (<= ~id3~0 127) (<= ~st3~0 1) (<= 0 ~id2~0) (<= 1 ~__tmp_1168_0~0) (<= 0 (+ ~nomsg~0 1)) (<= ~__return_617~0 0) (<= |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~0#1| 127) (<= 0 ~__return_965~0) (<= ~p2~0 0) (<= 0 ~mode2~0) (<= 0 ~__tmp_952_0~0) (<= 0 ~__tmp_856_0~0) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= ~id2~0 127) (<= 0 ~st3~0) (= (mod |ULTIMATE.start_main_~assert__arg~1#1| 256) 0) (<= (+ ~p3_new~0 1) 0) (<= |ULTIMATE.start_main_~init__tmp~0#1| 1) (<= ~__tmp_815_0~0 0) (<= |ULTIMATE.start_main_~check__tmp~16#1| 1) (<= 0 |#NULL.offset|) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~0#1| 1)) (<= 0 ~__tmp_746_0~0) (= ~p3~0 0) (<= 0 (+ ~p1_new~0 1)) (<= ~__tmp_952_0~0 0) (<= ~__tmp_504_0~0 0) (<= 0 ~send3~0) (<= 0 |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~0#1|) (<= 0 ~p1~0) (<= 0 ~__tmp_638_0~0) (<= 0 |#StackHeapBarrier|) (<= 0 ~__tmp_492_0~0) (<= 0 |ULTIMATE.start_main_~main__c1~0#1|) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~8#1| 0) (<= (+ |ULTIMATE.start_main_~node2__m2~0#1| 1) 0) (<= (+ |ULTIMATE.start_main_~node3__m3~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~assert__arg~0#1|) (<= 1 |ULTIMATE.start_main_~init__tmp~0#1|) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~__tmp_2~0#1|))' at error location [2022-11-26 00:17:41,432 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:17:41,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:17:41,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 23] total 69 [2022-11-26 00:17:41,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946893792] [2022-11-26 00:17:41,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:17:41,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-26 00:17:41,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:17:41,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-26 00:17:41,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1936, Invalid=14834, Unknown=0, NotChecked=0, Total=16770 [2022-11-26 00:17:41,438 INFO L87 Difference]: Start difference. First operand 661 states and 817 transitions. Second operand has 70 states, 70 states have (on average 3.9714285714285715) internal successors, (278), 69 states have internal predecessors, (278), 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) [2022-11-26 00:20:55,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:20:55,291 INFO L93 Difference]: Finished difference Result 10773 states and 13765 transitions. [2022-11-26 00:20:55,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 348 states. [2022-11-26 00:20:55,292 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 3.9714285714285715) internal successors, (278), 69 states have internal predecessors, (278), 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 96 [2022-11-26 00:20:55,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:20:55,327 INFO L225 Difference]: With dead ends: 10773 [2022-11-26 00:20:55,327 INFO L226 Difference]: Without dead ends: 10203 [2022-11-26 00:20:55,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 163 SyntacticMatches, 21 SemanticMatches, 464 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88916 ImplicationChecksByTransitivity, 300.7s TimeCoverageRelationStatistics Valid=26834, Invalid=189856, Unknown=0, NotChecked=0, Total=216690 [2022-11-26 00:20:55,358 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 10139 mSDsluCounter, 7477 mSDsCounter, 0 mSdLazyCounter, 10733 mSolverCounterSat, 839 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10139 SdHoareTripleChecker+Valid, 7628 SdHoareTripleChecker+Invalid, 11572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 839 IncrementalHoareTripleChecker+Valid, 10733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:20:55,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10139 Valid, 7628 Invalid, 11572 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [839 Valid, 10733 Invalid, 0 Unknown, 0 Unchecked, 16.7s Time] [2022-11-26 00:20:55,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10203 states. [2022-11-26 00:20:58,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10203 to 2480. [2022-11-26 00:20:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 2479 states have (on average 1.2444534086325132) internal successors, (3085), 2479 states have internal predecessors, (3085), 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) [2022-11-26 00:20:58,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 3085 transitions. [2022-11-26 00:20:58,196 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 3085 transitions. Word has length 96 [2022-11-26 00:20:58,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:20:58,197 INFO L495 AbstractCegarLoop]: Abstraction has 2480 states and 3085 transitions. [2022-11-26 00:20:58,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 3.9714285714285715) internal successors, (278), 69 states have internal predecessors, (278), 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) [2022-11-26 00:20:58,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 3085 transitions. [2022-11-26 00:20:58,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-26 00:20:58,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:20:58,200 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:20:58,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-26 00:20:58,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-26 00:20:58,407 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-26 00:20:58,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:20:58,407 INFO L85 PathProgramCache]: Analyzing trace with hash -760151599, now seen corresponding path program 1 times [2022-11-26 00:20:58,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:20:58,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180007443] [2022-11-26 00:20:58,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:20:58,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:20:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:21:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:21:01,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:21:01,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180007443] [2022-11-26 00:21:01,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180007443] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:21:01,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169791587] [2022-11-26 00:21:01,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:21:01,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:21:01,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:21:01,225 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:21:01,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e608af-87fe-402f-92e6-a23badb9a512/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:21:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:21:01,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-26 00:21:01,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:21:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:21:08,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:22:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:22:18,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169791587] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:22:18,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1322882618] [2022-11-26 00:22:18,089 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2022-11-26 00:22:18,089 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:22:18,089 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:22:18,090 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:22:18,090 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:22:19,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:19,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:19,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:22:19,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-26 00:22:19,093 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:22:19,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:22:19,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-26 00:23:15,892 INFO L180 IcfgInterpreter]: Interpretation finished