./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/bin/utaipan-g80aRyZoba --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 afa96f494675daaffb7cf8ecfbe30f06e1bb06b9219ecf3df6181ac4e4f076f6 --- 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-b5237d8 [2022-11-22 01:09:37,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:09:37,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:09:37,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:09:37,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:09:37,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:09:37,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:09:37,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:09:37,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:09:37,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:09:37,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:09:37,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:09:37,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:09:37,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:09:37,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:09:37,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:09:37,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:09:37,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:09:37,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:09:37,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:09:37,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:09:37,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:09:37,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:09:37,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:09:37,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:09:37,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:09:37,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:09:37,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:09:37,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:09:37,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:09:37,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:09:37,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:09:37,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:09:37,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:09:37,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:09:37,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:09:37,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:09:37,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:09:37,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:09:37,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:09:37,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:09:37,196 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 01:09:37,253 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:09:37,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:09:37,255 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:09:37,255 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:09:37,256 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:09:37,256 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:09:37,256 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:09:37,257 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:09:37,257 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:09:37,257 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:09:37,258 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:09:37,258 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:09:37,258 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:09:37,258 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:09:37,259 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:09:37,259 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:09:37,259 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:09:37,259 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:09:37,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:09:37,261 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:09:37,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:09:37,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:09:37,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:09:37,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:09:37,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:09:37,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:09:37,262 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:09:37,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:09:37,263 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:09:37,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:09:37,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:09:37,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:09:37,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:09:37,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:09:37,264 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:09:37,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:09:37,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:09:37,265 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:09:37,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:09:37,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:09:37,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:09:37,266 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_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afa96f494675daaffb7cf8ecfbe30f06e1bb06b9219ecf3df6181ac4e4f076f6 [2022-11-22 01:09:37,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:09:37,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:09:37,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:09:37,649 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:09:37,649 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:09:37,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-11-22 01:09:41,116 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:09:41,747 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:09:41,748 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-11-22 01:09:41,796 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/bin/utaipan-g80aRyZoba/data/bd89d3fe2/0c8e4ae664564c5e833d12554b8ab407/FLAG8c4c6140d [2022-11-22 01:09:41,820 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/bin/utaipan-g80aRyZoba/data/bd89d3fe2/0c8e4ae664564c5e833d12554b8ab407 [2022-11-22 01:09:41,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:09:41,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:09:41,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:09:41,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:09:41,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:09:41,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:09:41" (1/1) ... [2022-11-22 01:09:41,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28cb1627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:41, skipping insertion in model container [2022-11-22 01:09:41,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:09:41" (1/1) ... [2022-11-22 01:09:41,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:09:42,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:09:42,632 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_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12460,12473] [2022-11-22 01:09:42,703 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_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19746,19759] [2022-11-22 01:09:42,720 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_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22098,22111] [2022-11-22 01:09:42,729 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_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23218,23231] [2022-11-22 01:09:42,752 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_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26768,26781] [2022-11-22 01:09:42,760 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_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27891,27904] [2022-11-22 01:09:42,775 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_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30206,30219] [2022-11-22 01:09:43,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:09:43,498 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:09:43,595 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_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12460,12473] [2022-11-22 01:09:43,635 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_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19746,19759] [2022-11-22 01:09:43,654 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_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22098,22111] [2022-11-22 01:09:43,663 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_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23218,23231] [2022-11-22 01:09:43,689 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_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26768,26781] [2022-11-22 01:09:43,699 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_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27891,27904] [2022-11-22 01:09:43,717 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_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30206,30219] [2022-11-22 01:09:44,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:09:44,159 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:09:44,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:44 WrapperNode [2022-11-22 01:09:44,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:09:44,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:09:44,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:09:44,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:09:44,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:44" (1/1) ... [2022-11-22 01:09:44,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:44" (1/1) ... [2022-11-22 01:09:44,352 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 7010 [2022-11-22 01:09:44,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:09:44,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:09:44,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:09:44,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:09:44,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:44" (1/1) ... [2022-11-22 01:09:44,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:44" (1/1) ... [2022-11-22 01:09:44,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:44" (1/1) ... [2022-11-22 01:09:44,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:44" (1/1) ... [2022-11-22 01:09:44,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:44" (1/1) ... [2022-11-22 01:09:44,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:44" (1/1) ... [2022-11-22 01:09:44,578 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:44" (1/1) ... [2022-11-22 01:09:44,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:44" (1/1) ... [2022-11-22 01:09:44,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:09:44,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:09:44,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:09:44,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:09:44,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:44" (1/1) ... [2022-11-22 01:09:44,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:09:44,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:09:44,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:09:44,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_033d7dcc-bddd-4a4c-82ae-dd2c68e481f1/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:09:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:09:44,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:09:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:09:44,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:09:45,322 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:09:45,324 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:09:48,912 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:09:49,344 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:09:49,345 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:09:49,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:09:49 BoogieIcfgContainer [2022-11-22 01:09:49,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:09:49,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:09:49,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:09:49,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:09:49,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:09:41" (1/3) ... [2022-11-22 01:09:49,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e495a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:09:49, skipping insertion in model container [2022-11-22 01:09:49,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:09:44" (2/3) ... [2022-11-22 01:09:49,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e495a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:09:49, skipping insertion in model container [2022-11-22 01:09:49,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:09:49" (3/3) ... [2022-11-22 01:09:49,364 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-11-22 01:09:49,386 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:09:49,386 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-22 01:09:49,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:09:49,493 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;@14399a7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:09:49,493 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-22 01:09:49,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 1059 states, 1051 states have (on average 1.8924833491912465) internal successors, (1989), 1058 states have internal predecessors, (1989), 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) [2022-11-22 01:09:49,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 01:09:49,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:49,527 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] [2022-11-22 01:09:49,527 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 01:09:49,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:49,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1184813438, now seen corresponding path program 1 times [2022-11-22 01:09:49,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:49,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456111250] [2022-11-22 01:09:49,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:49,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:09:50,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:50,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456111250] [2022-11-22 01:09:50,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456111250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:09:50,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:09:50,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:09:50,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580965184] [2022-11-22 01:09:50,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:09:50,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:09:50,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:50,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:09:50,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:09:50,287 INFO L87 Difference]: Start difference. First operand has 1059 states, 1051 states have (on average 1.8924833491912465) internal successors, (1989), 1058 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-11-22 01:09:50,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:50,852 INFO L93 Difference]: Finished difference Result 1348 states and 2449 transitions. [2022-11-22 01:09:50,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:09:50,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-11-22 01:09:50,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:50,882 INFO L225 Difference]: With dead ends: 1348 [2022-11-22 01:09:50,883 INFO L226 Difference]: Without dead ends: 1214 [2022-11-22 01:09:50,888 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 [2022-11-22 01:09:50,892 INFO L413 NwaCegarLoop]: 1962 mSDtfsCounter, 921 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 3150 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:50,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 3150 Invalid, 129 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:09:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2022-11-22 01:09:51,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1206. [2022-11-22 01:09:51,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1199 states have (on average 1.291909924937448) internal successors, (1549), 1205 states have internal predecessors, (1549), 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) [2022-11-22 01:09:51,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1549 transitions. [2022-11-22 01:09:51,059 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1549 transitions. Word has length 63 [2022-11-22 01:09:51,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:51,060 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 1549 transitions. [2022-11-22 01:09:51,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-11-22 01:09:51,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1549 transitions. [2022-11-22 01:09:51,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 01:09:51,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:51,069 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] [2022-11-22 01:09:51,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:09:51,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 01:09:51,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:51,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2003436219, now seen corresponding path program 1 times [2022-11-22 01:09:51,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:51,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521110818] [2022-11-22 01:09:51,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:51,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:51,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:09:51,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:51,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521110818] [2022-11-22 01:09:51,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521110818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:09:51,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:09:51,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:09:51,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564961396] [2022-11-22 01:09:51,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:09:51,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:09:51,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:51,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:09:51,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:09:51,262 INFO L87 Difference]: Start difference. First operand 1206 states and 1549 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-11-22 01:09:51,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:51,436 INFO L93 Difference]: Finished difference Result 1737 states and 2289 transitions. [2022-11-22 01:09:51,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:09:51,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-11-22 01:09:51,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:51,449 INFO L225 Difference]: With dead ends: 1737 [2022-11-22 01:09:51,450 INFO L226 Difference]: Without dead ends: 1456 [2022-11-22 01:09:51,456 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 [2022-11-22 01:09:51,457 INFO L413 NwaCegarLoop]: 1326 mSDtfsCounter, 672 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:51,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 2130 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:09:51,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2022-11-22 01:09:51,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1448. [2022-11-22 01:09:51,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1441 states have (on average 1.3095072866065232) internal successors, (1887), 1447 states have internal predecessors, (1887), 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) [2022-11-22 01:09:51,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 1887 transitions. [2022-11-22 01:09:51,593 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 1887 transitions. Word has length 63 [2022-11-22 01:09:51,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:51,593 INFO L495 AbstractCegarLoop]: Abstraction has 1448 states and 1887 transitions. [2022-11-22 01:09:51,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-11-22 01:09:51,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 1887 transitions. [2022-11-22 01:09:51,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 01:09:51,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:51,597 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] [2022-11-22 01:09:51,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:09:51,599 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 01:09:51,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:51,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1542392687, now seen corresponding path program 1 times [2022-11-22 01:09:51,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:51,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532090395] [2022-11-22 01:09:51,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:51,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:09:51,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:51,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532090395] [2022-11-22 01:09:51,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532090395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:09:51,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:09:51,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:09:51,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48081124] [2022-11-22 01:09:51,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:09:51,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:09:51,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:51,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:09:51,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:09:51,906 INFO L87 Difference]: Start difference. First operand 1448 states and 1887 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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) [2022-11-22 01:09:52,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:52,856 INFO L93 Difference]: Finished difference Result 2715 states and 3620 transitions. [2022-11-22 01:09:52,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:09:52,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 63 [2022-11-22 01:09:52,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:52,865 INFO L225 Difference]: With dead ends: 2715 [2022-11-22 01:09:52,865 INFO L226 Difference]: Without dead ends: 1575 [2022-11-22 01:09:52,868 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 [2022-11-22 01:09:52,871 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 3208 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3208 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:52,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3208 Valid, 760 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 01:09:52,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2022-11-22 01:09:53,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1567. [2022-11-22 01:09:53,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1560 states have (on average 1.3429487179487178) internal successors, (2095), 1566 states have internal predecessors, (2095), 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) [2022-11-22 01:09:53,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2095 transitions. [2022-11-22 01:09:53,067 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2095 transitions. Word has length 63 [2022-11-22 01:09:53,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:53,069 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 2095 transitions. [2022-11-22 01:09:53,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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) [2022-11-22 01:09:53,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2095 transitions. [2022-11-22 01:09:53,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-22 01:09:53,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:53,075 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] [2022-11-22 01:09:53,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:09:53,076 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 01:09:53,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:53,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1152487412, now seen corresponding path program 1 times [2022-11-22 01:09:53,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:53,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464113131] [2022-11-22 01:09:53,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:53,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:09:53,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:53,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464113131] [2022-11-22 01:09:53,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464113131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:09:53,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:09:53,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:09:53,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546688247] [2022-11-22 01:09:53,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:09:53,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:09:53,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:53,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:09:53,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:09:53,252 INFO L87 Difference]: Start difference. First operand 1567 states and 2095 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-11-22 01:09:53,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:53,614 INFO L93 Difference]: Finished difference Result 3538 states and 4810 transitions. [2022-11-22 01:09:53,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:09:53,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-11-22 01:09:53,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:53,626 INFO L225 Difference]: With dead ends: 3538 [2022-11-22 01:09:53,626 INFO L226 Difference]: Without dead ends: 2573 [2022-11-22 01:09:53,629 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 [2022-11-22 01:09:53,638 INFO L413 NwaCegarLoop]: 1324 mSDtfsCounter, 852 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:53,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 1955 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:09:53,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2022-11-22 01:09:53,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2565. [2022-11-22 01:09:53,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 2558 states have (on average 1.3444096950742768) internal successors, (3439), 2564 states have internal predecessors, (3439), 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) [2022-11-22 01:09:53,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3439 transitions. [2022-11-22 01:09:53,918 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3439 transitions. Word has length 64 [2022-11-22 01:09:53,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:53,921 INFO L495 AbstractCegarLoop]: Abstraction has 2565 states and 3439 transitions. [2022-11-22 01:09:53,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2022-11-22 01:09:53,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3439 transitions. [2022-11-22 01:09:53,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-22 01:09:53,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:53,926 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] [2022-11-22 01:09:53,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:09:53,927 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)] === [2022-11-22 01:09:53,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:53,928 INFO L85 PathProgramCache]: Analyzing trace with hash -998210018, now seen corresponding path program 1 times [2022-11-22 01:09:53,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:53,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739076501] [2022-11-22 01:09:53,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:53,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:54,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:09:54,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:54,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739076501] [2022-11-22 01:09:54,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739076501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:09:54,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:09:54,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:09:54,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839688268] [2022-11-22 01:09:54,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:09:54,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:09:54,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:54,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:09:54,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:09:54,092 INFO L87 Difference]: Start difference. First operand 2565 states and 3439 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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) [2022-11-22 01:09:55,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:55,248 INFO L93 Difference]: Finished difference Result 5263 states and 7132 transitions. [2022-11-22 01:09:55,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:09:55,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 64 [2022-11-22 01:09:55,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:55,263 INFO L225 Difference]: With dead ends: 5263 [2022-11-22 01:09:55,264 INFO L226 Difference]: Without dead ends: 3302 [2022-11-22 01:09:55,272 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 [2022-11-22 01:09:55,273 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 2780 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:55,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2780 Valid, 597 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 01:09:55,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3302 states. [2022-11-22 01:09:55,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3302 to 3294. [2022-11-22 01:09:55,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3294 states, 3287 states have (on average 1.3383024034073623) internal successors, (4399), 3293 states have internal predecessors, (4399), 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) [2022-11-22 01:09:55,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3294 states to 3294 states and 4399 transitions. [2022-11-22 01:09:55,664 INFO L78 Accepts]: Start accepts. Automaton has 3294 states and 4399 transitions. Word has length 64 [2022-11-22 01:09:55,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:55,664 INFO L495 AbstractCegarLoop]: Abstraction has 3294 states and 4399 transitions. [2022-11-22 01:09:55,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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) [2022-11-22 01:09:55,665 INFO L276 IsEmpty]: Start isEmpty. Operand 3294 states and 4399 transitions. [2022-11-22 01:09:55,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-22 01:09:55,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:55,670 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] [2022-11-22 01:09:55,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:09:55,670 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 01:09:55,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:55,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1760122824, now seen corresponding path program 1 times [2022-11-22 01:09:55,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:55,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350833605] [2022-11-22 01:09:55,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:55,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:55,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:09:55,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:55,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350833605] [2022-11-22 01:09:55,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350833605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:09:55,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:09:55,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:09:55,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174665037] [2022-11-22 01:09:55,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:09:55,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:09:55,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:55,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:09:55,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:09:55,876 INFO L87 Difference]: Start difference. First operand 3294 states and 4399 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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) [2022-11-22 01:09:57,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:57,079 INFO L93 Difference]: Finished difference Result 7715 states and 10483 transitions. [2022-11-22 01:09:57,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:09:57,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 64 [2022-11-22 01:09:57,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:57,100 INFO L225 Difference]: With dead ends: 7715 [2022-11-22 01:09:57,100 INFO L226 Difference]: Without dead ends: 4854 [2022-11-22 01:09:57,106 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 [2022-11-22 01:09:57,110 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 2462 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2462 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:57,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2462 Valid, 573 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 01:09:57,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4854 states. [2022-11-22 01:09:57,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4854 to 4846. [2022-11-22 01:09:57,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4846 states, 4839 states have (on average 1.3533787972721636) internal successors, (6549), 4845 states have internal predecessors, (6549), 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) [2022-11-22 01:09:57,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4846 states to 4846 states and 6549 transitions. [2022-11-22 01:09:57,825 INFO L78 Accepts]: Start accepts. Automaton has 4846 states and 6549 transitions. Word has length 64 [2022-11-22 01:09:57,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:57,825 INFO L495 AbstractCegarLoop]: Abstraction has 4846 states and 6549 transitions. [2022-11-22 01:09:57,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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) [2022-11-22 01:09:57,826 INFO L276 IsEmpty]: Start isEmpty. Operand 4846 states and 6549 transitions. [2022-11-22 01:09:57,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-22 01:09:57,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:57,831 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] [2022-11-22 01:09:57,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:09:57,831 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 01:09:57,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:57,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1332635061, now seen corresponding path program 1 times [2022-11-22 01:09:57,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:57,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721915427] [2022-11-22 01:09:57,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:57,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:09:57,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:57,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721915427] [2022-11-22 01:09:57,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721915427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:09:57,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:09:57,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:09:57,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291422195] [2022-11-22 01:09:57,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:09:57,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:09:57,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:57,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:09:57,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:09:57,990 INFO L87 Difference]: Start difference. First operand 4846 states and 6549 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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) [2022-11-22 01:09:59,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:59,516 INFO L93 Difference]: Finished difference Result 12804 states and 17488 transitions. [2022-11-22 01:09:59,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:09:59,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 65 [2022-11-22 01:09:59,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:59,551 INFO L225 Difference]: With dead ends: 12804 [2022-11-22 01:09:59,551 INFO L226 Difference]: Without dead ends: 8196 [2022-11-22 01:09:59,560 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 [2022-11-22 01:09:59,561 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 2065 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2065 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:59,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2065 Valid, 508 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:09:59,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8196 states. [2022-11-22 01:10:00,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8196 to 8188. [2022-11-22 01:10:00,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8188 states, 8181 states have (on average 1.3539909546510207) internal successors, (11077), 8187 states have internal predecessors, (11077), 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) [2022-11-22 01:10:00,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 11077 transitions. [2022-11-22 01:10:00,802 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 11077 transitions. Word has length 65 [2022-11-22 01:10:00,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:00,803 INFO L495 AbstractCegarLoop]: Abstraction has 8188 states and 11077 transitions. [2022-11-22 01:10:00,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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) [2022-11-22 01:10:00,803 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 11077 transitions. [2022-11-22 01:10:00,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-22 01:10:00,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:00,809 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] [2022-11-22 01:10:00,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:10:00,810 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 01:10:00,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:00,810 INFO L85 PathProgramCache]: Analyzing trace with hash -254635222, now seen corresponding path program 1 times [2022-11-22 01:10:00,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:10:00,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628851205] [2022-11-22 01:10:00,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:00,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:10:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:00,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:10:00,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:10:00,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628851205] [2022-11-22 01:10:00,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628851205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:10:00,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:10:00,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:10:00,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46380706] [2022-11-22 01:10:00,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:10:00,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:10:00,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:10:00,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:10:00,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:10:00,917 INFO L87 Difference]: Start difference. First operand 8188 states and 11077 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-11-22 01:10:02,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:02,335 INFO L93 Difference]: Finished difference Result 20818 states and 28288 transitions. [2022-11-22 01:10:02,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:10:02,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2022-11-22 01:10:02,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:02,395 INFO L225 Difference]: With dead ends: 20818 [2022-11-22 01:10:02,395 INFO L226 Difference]: Without dead ends: 13787 [2022-11-22 01:10:02,407 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 [2022-11-22 01:10:02,408 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 456 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:10:02,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1185 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:10:02,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13787 states. [2022-11-22 01:10:04,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13787 to 13779. [2022-11-22 01:10:04,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13779 states, 13772 states have (on average 1.3427243682834737) internal successors, (18492), 13778 states have internal predecessors, (18492), 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) [2022-11-22 01:10:04,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13779 states to 13779 states and 18492 transitions. [2022-11-22 01:10:04,704 INFO L78 Accepts]: Start accepts. Automaton has 13779 states and 18492 transitions. Word has length 66 [2022-11-22 01:10:04,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:04,705 INFO L495 AbstractCegarLoop]: Abstraction has 13779 states and 18492 transitions. [2022-11-22 01:10:04,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2022-11-22 01:10:04,706 INFO L276 IsEmpty]: Start isEmpty. Operand 13779 states and 18492 transitions. [2022-11-22 01:10:04,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-22 01:10:04,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:04,715 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] [2022-11-22 01:10:04,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:10:04,715 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 01:10:04,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:04,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2145810939, now seen corresponding path program 1 times [2022-11-22 01:10:04,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:10:04,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490146101] [2022-11-22 01:10:04,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:04,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:10:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:04,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:10:04,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:10:04,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490146101] [2022-11-22 01:10:04,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490146101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:10:04,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:10:04,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 01:10:04,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359078760] [2022-11-22 01:10:04,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:10:04,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:10:04,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:10:04,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:10:04,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:10:04,986 INFO L87 Difference]: Start difference. First operand 13779 states and 18492 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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) [2022-11-22 01:10:13,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:13,529 INFO L93 Difference]: Finished difference Result 71170 states and 96948 transitions. [2022-11-22 01:10:13,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 01:10:13,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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 67 [2022-11-22 01:10:13,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:13,773 INFO L225 Difference]: With dead ends: 71170 [2022-11-22 01:10:13,773 INFO L226 Difference]: Without dead ends: 65374 [2022-11-22 01:10:13,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-22 01:10:13,801 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 4174 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4174 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:10:13,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4174 Valid, 945 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 01:10:13,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65374 states. [2022-11-22 01:10:17,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65374 to 13847. [2022-11-22 01:10:17,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13847 states, 13840 states have (on average 1.342485549132948) internal successors, (18580), 13846 states have internal predecessors, (18580), 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) [2022-11-22 01:10:17,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13847 states to 13847 states and 18580 transitions. [2022-11-22 01:10:17,463 INFO L78 Accepts]: Start accepts. Automaton has 13847 states and 18580 transitions. Word has length 67 [2022-11-22 01:10:17,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:17,463 INFO L495 AbstractCegarLoop]: Abstraction has 13847 states and 18580 transitions. [2022-11-22 01:10:17,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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) [2022-11-22 01:10:17,464 INFO L276 IsEmpty]: Start isEmpty. Operand 13847 states and 18580 transitions. [2022-11-22 01:10:17,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-22 01:10:17,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:17,473 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] [2022-11-22 01:10:17,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:10:17,474 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 01:10:17,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:17,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2044326195, now seen corresponding path program 1 times [2022-11-22 01:10:17,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:10:17,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974081217] [2022-11-22 01:10:17,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:17,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:10:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:10:17,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:10:17,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974081217] [2022-11-22 01:10:17,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974081217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:10:17,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:10:17,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 01:10:17,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765405702] [2022-11-22 01:10:17,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:10:17,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:10:17,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:10:17,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:10:17,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:10:17,737 INFO L87 Difference]: Start difference. First operand 13847 states and 18580 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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) [2022-11-22 01:10:30,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:30,401 INFO L93 Difference]: Finished difference Result 64574 states and 87598 transitions. [2022-11-22 01:10:30,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 01:10:30,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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 67 [2022-11-22 01:10:30,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:30,566 INFO L225 Difference]: With dead ends: 64574 [2022-11-22 01:10:30,566 INFO L226 Difference]: Without dead ends: 58850 [2022-11-22 01:10:30,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-22 01:10:30,591 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 3823 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3823 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:10:30,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3823 Valid, 937 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 01:10:30,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58850 states. [2022-11-22 01:10:33,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58850 to 14003. [2022-11-22 01:10:33,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14003 states, 13996 states have (on average 1.3422406401829095) internal successors, (18786), 14002 states have internal predecessors, (18786), 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) [2022-11-22 01:10:33,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14003 states to 14003 states and 18786 transitions. [2022-11-22 01:10:33,694 INFO L78 Accepts]: Start accepts. Automaton has 14003 states and 18786 transitions. Word has length 67 [2022-11-22 01:10:33,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:33,695 INFO L495 AbstractCegarLoop]: Abstraction has 14003 states and 18786 transitions. [2022-11-22 01:10:33,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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) [2022-11-22 01:10:33,695 INFO L276 IsEmpty]: Start isEmpty. Operand 14003 states and 18786 transitions. [2022-11-22 01:10:33,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-22 01:10:33,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:33,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:10:33,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:10:33,706 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 01:10:33,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:33,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1189983517, now seen corresponding path program 1 times [2022-11-22 01:10:33,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:10:33,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138952359] [2022-11-22 01:10:33,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:33,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:10:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:33,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:10:33,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:10:33,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138952359] [2022-11-22 01:10:33,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138952359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:10:33,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:10:33,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 01:10:33,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493676326] [2022-11-22 01:10:33,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:10:33,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:10:33,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:10:33,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:10:33,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:10:33,914 INFO L87 Difference]: Start difference. First operand 14003 states and 18786 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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) [2022-11-22 01:10:47,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:47,127 INFO L93 Difference]: Finished difference Result 57224 states and 77306 transitions. [2022-11-22 01:10:47,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 01:10:47,128 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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 67 [2022-11-22 01:10:47,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:47,261 INFO L225 Difference]: With dead ends: 57224 [2022-11-22 01:10:47,261 INFO L226 Difference]: Without dead ends: 51866 [2022-11-22 01:10:47,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-22 01:10:47,284 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 2889 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:10:47,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2889 Valid, 1024 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 01:10:47,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51866 states. [2022-11-22 01:10:50,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51866 to 14074. [2022-11-22 01:10:50,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14074 states, 14067 states have (on average 1.342503732139049) internal successors, (18885), 14073 states have internal predecessors, (18885), 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) [2022-11-22 01:10:51,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14074 states to 14074 states and 18885 transitions. [2022-11-22 01:10:51,024 INFO L78 Accepts]: Start accepts. Automaton has 14074 states and 18885 transitions. Word has length 67 [2022-11-22 01:10:51,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:51,024 INFO L495 AbstractCegarLoop]: Abstraction has 14074 states and 18885 transitions. [2022-11-22 01:10:51,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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) [2022-11-22 01:10:51,025 INFO L276 IsEmpty]: Start isEmpty. Operand 14074 states and 18885 transitions. [2022-11-22 01:10:51,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-22 01:10:51,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:51,036 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] [2022-11-22 01:10:51,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 01:10:51,036 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)] === [2022-11-22 01:10:51,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:51,037 INFO L85 PathProgramCache]: Analyzing trace with hash -92881536, now seen corresponding path program 1 times [2022-11-22 01:10:51,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:10:51,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985011801] [2022-11-22 01:10:51,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:51,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:10:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:10:51,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:10:51,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985011801] [2022-11-22 01:10:51,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985011801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:10:51,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:10:51,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 01:10:51,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067682982] [2022-11-22 01:10:51,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:10:51,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:10:51,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:10:51,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:10:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:10:51,271 INFO L87 Difference]: Start difference. First operand 14074 states and 18885 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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) [2022-11-22 01:11:04,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:11:04,297 INFO L93 Difference]: Finished difference Result 52840 states and 70924 transitions. [2022-11-22 01:11:04,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 01:11:04,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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 67 [2022-11-22 01:11:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:11:04,377 INFO L225 Difference]: With dead ends: 52840 [2022-11-22 01:11:04,377 INFO L226 Difference]: Without dead ends: 47022 [2022-11-22 01:11:04,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-22 01:11:04,396 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 3776 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3776 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:11:04,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3776 Valid, 901 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 01:11:04,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47022 states. [2022-11-22 01:11:08,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47022 to 14109. [2022-11-22 01:11:08,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14109 states, 14102 states have (on average 1.3423627854205078) internal successors, (18930), 14108 states have internal predecessors, (18930), 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) [2022-11-22 01:11:08,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14109 states to 14109 states and 18930 transitions. [2022-11-22 01:11:08,074 INFO L78 Accepts]: Start accepts. Automaton has 14109 states and 18930 transitions. Word has length 67 [2022-11-22 01:11:08,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:11:08,074 INFO L495 AbstractCegarLoop]: Abstraction has 14109 states and 18930 transitions. [2022-11-22 01:11:08,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 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) [2022-11-22 01:11:08,074 INFO L276 IsEmpty]: Start isEmpty. Operand 14109 states and 18930 transitions. [2022-11-22 01:11:08,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-22 01:11:08,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:11:08,084 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] [2022-11-22 01:11:08,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 01:11:08,084 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 01:11:08,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:11:08,085 INFO L85 PathProgramCache]: Analyzing trace with hash 680595235, now seen corresponding path program 1 times [2022-11-22 01:11:08,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:11:08,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407886504] [2022-11-22 01:11:08,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:08,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:11:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:11:08,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:11:08,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407886504] [2022-11-22 01:11:08,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407886504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:11:08,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:11:08,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 01:11:08,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846493161] [2022-11-22 01:11:08,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:11:08,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:11:08,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:11:08,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:11:08,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:11:08,519 INFO L87 Difference]: Start difference. First operand 14109 states and 18930 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 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) [2022-11-22 01:11:17,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:11:17,217 INFO L93 Difference]: Finished difference Result 38833 states and 52356 transitions. [2022-11-22 01:11:17,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:11:17,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 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 [2022-11-22 01:11:17,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:11:17,257 INFO L225 Difference]: With dead ends: 38833 [2022-11-22 01:11:17,257 INFO L226 Difference]: Without dead ends: 27611 [2022-11-22 01:11:17,268 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 [2022-11-22 01:11:17,269 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 2194 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:11:17,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2194 Valid, 1476 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 01:11:17,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27611 states. [2022-11-22 01:11:20,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27611 to 13807. [2022-11-22 01:11:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13807 states, 13800 states have (on average 1.3408695652173912) internal successors, (18504), 13806 states have internal predecessors, (18504), 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) [2022-11-22 01:11:20,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13807 states to 13807 states and 18504 transitions. [2022-11-22 01:11:20,853 INFO L78 Accepts]: Start accepts. Automaton has 13807 states and 18504 transitions. Word has length 68 [2022-11-22 01:11:20,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:11:20,854 INFO L495 AbstractCegarLoop]: Abstraction has 13807 states and 18504 transitions. [2022-11-22 01:11:20,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 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) [2022-11-22 01:11:20,854 INFO L276 IsEmpty]: Start isEmpty. Operand 13807 states and 18504 transitions. [2022-11-22 01:11:20,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-22 01:11:20,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:11:20,861 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] [2022-11-22 01:11:20,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 01:11:20,862 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 01:11:20,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:11:20,862 INFO L85 PathProgramCache]: Analyzing trace with hash 718017329, now seen corresponding path program 1 times [2022-11-22 01:11:20,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:11:20,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059427053] [2022-11-22 01:11:20,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:20,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:11:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:21,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:11:21,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:11:21,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059427053] [2022-11-22 01:11:21,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059427053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:11:21,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:11:21,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 01:11:21,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915846887] [2022-11-22 01:11:21,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:11:21,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:11:21,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:11:21,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:11:21,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:11:21,234 INFO L87 Difference]: Start difference. First operand 13807 states and 18504 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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) [2022-11-22 01:11:31,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:11:31,743 INFO L93 Difference]: Finished difference Result 41466 states and 55789 transitions. [2022-11-22 01:11:31,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 01:11:31,743 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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 [2022-11-22 01:11:31,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:11:31,791 INFO L225 Difference]: With dead ends: 41466 [2022-11-22 01:11:31,791 INFO L226 Difference]: Without dead ends: 30702 [2022-11-22 01:11:31,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 01:11:31,804 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 2065 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2065 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:11:31,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2065 Valid, 2148 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1599 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 01:11:31,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30702 states. [2022-11-22 01:11:35,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30702 to 13676. [2022-11-22 01:11:35,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13676 states, 13669 states have (on average 1.3404052966566684) internal successors, (18322), 13675 states have internal predecessors, (18322), 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) [2022-11-22 01:11:35,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13676 states to 13676 states and 18322 transitions. [2022-11-22 01:11:35,668 INFO L78 Accepts]: Start accepts. Automaton has 13676 states and 18322 transitions. Word has length 68 [2022-11-22 01:11:35,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:11:35,669 INFO L495 AbstractCegarLoop]: Abstraction has 13676 states and 18322 transitions. [2022-11-22 01:11:35,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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) [2022-11-22 01:11:35,669 INFO L276 IsEmpty]: Start isEmpty. Operand 13676 states and 18322 transitions. [2022-11-22 01:11:35,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-22 01:11:35,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:11:35,676 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] [2022-11-22 01:11:35,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 01:11:35,677 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 01:11:35,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:11:35,677 INFO L85 PathProgramCache]: Analyzing trace with hash -2097490812, now seen corresponding path program 1 times [2022-11-22 01:11:35,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:11:35,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439085604] [2022-11-22 01:11:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:35,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:11:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:36,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:11:36,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:11:36,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439085604] [2022-11-22 01:11:36,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439085604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:11:36,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:11:36,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 01:11:36,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231644153] [2022-11-22 01:11:36,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:11:36,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:11:36,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:11:36,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:11:36,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:11:36,034 INFO L87 Difference]: Start difference. First operand 13676 states and 18322 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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) [2022-11-22 01:11:47,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:11:47,569 INFO L93 Difference]: Finished difference Result 41548 states and 55893 transitions. [2022-11-22 01:11:47,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 01:11:47,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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 [2022-11-22 01:11:47,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:11:47,614 INFO L225 Difference]: With dead ends: 41548 [2022-11-22 01:11:47,614 INFO L226 Difference]: Without dead ends: 31008 [2022-11-22 01:11:47,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:11:47,625 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 2323 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2323 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:11:47,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2323 Valid, 1893 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 01:11:47,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31008 states. [2022-11-22 01:11:51,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31008 to 13656. [2022-11-22 01:11:51,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13656 states, 13649 states have (on average 1.3400249102498352) internal successors, (18290), 13655 states have internal predecessors, (18290), 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) [2022-11-22 01:11:51,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13656 states to 13656 states and 18290 transitions. [2022-11-22 01:11:51,862 INFO L78 Accepts]: Start accepts. Automaton has 13656 states and 18290 transitions. Word has length 68 [2022-11-22 01:11:51,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:11:51,863 INFO L495 AbstractCegarLoop]: Abstraction has 13656 states and 18290 transitions. [2022-11-22 01:11:51,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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) [2022-11-22 01:11:51,863 INFO L276 IsEmpty]: Start isEmpty. Operand 13656 states and 18290 transitions. [2022-11-22 01:11:51,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-22 01:11:51,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:11:51,870 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] [2022-11-22 01:11:51,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 01:11:51,871 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 01:11:51,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:11:51,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2111634662, now seen corresponding path program 1 times [2022-11-22 01:11:51,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:11:51,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917747555] [2022-11-22 01:11:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:51,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:11:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:11:52,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:11:52,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917747555] [2022-11-22 01:11:52,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917747555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:11:52,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:11:52,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 01:11:52,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538351304] [2022-11-22 01:11:52,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:11:52,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:11:52,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:11:52,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:11:52,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:11:52,288 INFO L87 Difference]: Start difference. First operand 13656 states and 18290 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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) [2022-11-22 01:12:05,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:12:05,794 INFO L93 Difference]: Finished difference Result 44066 states and 59246 transitions. [2022-11-22 01:12:05,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 01:12:05,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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 [2022-11-22 01:12:05,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:12:05,846 INFO L225 Difference]: With dead ends: 44066 [2022-11-22 01:12:05,846 INFO L226 Difference]: Without dead ends: 33545 [2022-11-22 01:12:05,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 01:12:05,860 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 2080 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 1707 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2080 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:12:05,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2080 Valid, 2130 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1707 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-22 01:12:05,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33545 states. [2022-11-22 01:12:10,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33545 to 13644. [2022-11-22 01:12:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13644 states, 13637 states have (on average 1.3395174891838382) internal successors, (18267), 13643 states have internal predecessors, (18267), 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) [2022-11-22 01:12:10,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13644 states to 13644 states and 18267 transitions. [2022-11-22 01:12:10,481 INFO L78 Accepts]: Start accepts. Automaton has 13644 states and 18267 transitions. Word has length 68 [2022-11-22 01:12:10,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:12:10,482 INFO L495 AbstractCegarLoop]: Abstraction has 13644 states and 18267 transitions. [2022-11-22 01:12:10,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 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) [2022-11-22 01:12:10,482 INFO L276 IsEmpty]: Start isEmpty. Operand 13644 states and 18267 transitions. [2022-11-22 01:12:10,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-22 01:12:10,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:12:10,486 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] [2022-11-22 01:12:10,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 01:12:10,487 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 01:12:10,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:12:10,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1885132627, now seen corresponding path program 1 times [2022-11-22 01:12:10,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:12:10,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172656152] [2022-11-22 01:12:10,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:12:10,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:12:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:12:11,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:12:11,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:12:11,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172656152] [2022-11-22 01:12:11,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172656152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:12:11,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:12:11,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 01:12:11,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162968433] [2022-11-22 01:12:11,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:12:11,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 01:12:11,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:12:11,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 01:12:11,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:12:11,491 INFO L87 Difference]: Start difference. First operand 13644 states and 18267 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 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) [2022-11-22 01:12:46,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:12:46,478 INFO L93 Difference]: Finished difference Result 84436 states and 114019 transitions. [2022-11-22 01:12:46,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-22 01:12:46,478 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 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 69 [2022-11-22 01:12:46,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:12:46,607 INFO L225 Difference]: With dead ends: 84436 [2022-11-22 01:12:46,607 INFO L226 Difference]: Without dead ends: 73918 [2022-11-22 01:12:46,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=293, Invalid=1039, Unknown=0, NotChecked=0, Total=1332 [2022-11-22 01:12:46,625 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 4290 mSDsluCounter, 4867 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4290 SdHoareTripleChecker+Valid, 5617 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:12:46,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4290 Valid, 5617 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 01:12:46,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73918 states. [2022-11-22 01:12:52,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73918 to 13624. [2022-11-22 01:12:52,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13624 states, 13618 states have (on average 1.3386694081362902) internal successors, (18230), 13623 states have internal predecessors, (18230), 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) [2022-11-22 01:12:52,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13624 states to 13624 states and 18230 transitions. [2022-11-22 01:12:52,695 INFO L78 Accepts]: Start accepts. Automaton has 13624 states and 18230 transitions. Word has length 69 [2022-11-22 01:12:52,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:12:52,695 INFO L495 AbstractCegarLoop]: Abstraction has 13624 states and 18230 transitions. [2022-11-22 01:12:52,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 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) [2022-11-22 01:12:52,696 INFO L276 IsEmpty]: Start isEmpty. Operand 13624 states and 18230 transitions. [2022-11-22 01:12:52,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-22 01:12:52,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:12:52,700 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] [2022-11-22 01:12:52,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 01:12:52,700 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 01:12:52,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:12:52,701 INFO L85 PathProgramCache]: Analyzing trace with hash -578802053, now seen corresponding path program 1 times [2022-11-22 01:12:52,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:12:52,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257466150] [2022-11-22 01:12:52,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:12:52,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:12:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:12:53,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:12:53,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:12:53,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257466150] [2022-11-22 01:12:53,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257466150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:12:53,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:12:53,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 01:12:53,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135219661] [2022-11-22 01:12:53,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:12:53,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 01:12:53,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:12:53,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 01:12:53,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-22 01:12:53,433 INFO L87 Difference]: Start difference. First operand 13624 states and 18230 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 states have internal predecessors, (69), 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) [2022-11-22 01:13:25,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:13:25,711 INFO L93 Difference]: Finished difference Result 63269 states and 85380 transitions. [2022-11-22 01:13:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 01:13:25,711 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 states have internal predecessors, (69), 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 69 [2022-11-22 01:13:25,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:13:25,802 INFO L225 Difference]: With dead ends: 63269 [2022-11-22 01:13:25,802 INFO L226 Difference]: Without dead ends: 52521 [2022-11-22 01:13:25,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2022-11-22 01:13:25,820 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 3666 mSDsluCounter, 3455 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3666 SdHoareTripleChecker+Valid, 4451 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:13:25,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3666 Valid, 4451 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 01:13:25,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52521 states. [2022-11-22 01:13:33,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52521 to 13400. [2022-11-22 01:13:33,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13400 states, 13395 states have (on average 1.337290033594625) internal successors, (17913), 13399 states have internal predecessors, (17913), 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) [2022-11-22 01:13:33,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13400 states to 13400 states and 17913 transitions. [2022-11-22 01:13:33,514 INFO L78 Accepts]: Start accepts. Automaton has 13400 states and 17913 transitions. Word has length 69 [2022-11-22 01:13:33,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:13:33,514 INFO L495 AbstractCegarLoop]: Abstraction has 13400 states and 17913 transitions. [2022-11-22 01:13:33,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 states have internal predecessors, (69), 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) [2022-11-22 01:13:33,514 INFO L276 IsEmpty]: Start isEmpty. Operand 13400 states and 17913 transitions. [2022-11-22 01:13:33,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-22 01:13:33,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:13:33,519 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] [2022-11-22 01:13:33,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 01:13:33,519 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 01:13:33,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:13:33,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1227479287, now seen corresponding path program 1 times [2022-11-22 01:13:33,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:13:33,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49417] [2022-11-22 01:13:33,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:13:33,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:13:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:13:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:13:33,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:13:33,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49417] [2022-11-22 01:13:33,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:13:33,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:13:33,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:13:33,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364224145] [2022-11-22 01:13:33,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:13:33,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:13:33,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:13:33,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:13:33,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:13:33,596 INFO L87 Difference]: Start difference. First operand 13400 states and 17913 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-11-22 01:13:41,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:13:41,565 INFO L93 Difference]: Finished difference Result 19271 states and 25848 transitions. [2022-11-22 01:13:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:13:41,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-11-22 01:13:41,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:13:41,581 INFO L225 Difference]: With dead ends: 19271 [2022-11-22 01:13:41,581 INFO L226 Difference]: Without dead ends: 13406 [2022-11-22 01:13:41,588 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 [2022-11-22 01:13:41,588 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 373 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:13:41,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 1206 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:13:41,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13406 states. [2022-11-22 01:13:48,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13406 to 13400. [2022-11-22 01:13:48,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13400 states, 13395 states have (on average 1.326614408361329) internal successors, (17770), 13399 states have internal predecessors, (17770), 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) [2022-11-22 01:13:48,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13400 states to 13400 states and 17770 transitions. [2022-11-22 01:13:48,810 INFO L78 Accepts]: Start accepts. Automaton has 13400 states and 17770 transitions. Word has length 69 [2022-11-22 01:13:48,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:13:48,811 INFO L495 AbstractCegarLoop]: Abstraction has 13400 states and 17770 transitions. [2022-11-22 01:13:48,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-11-22 01:13:48,811 INFO L276 IsEmpty]: Start isEmpty. Operand 13400 states and 17770 transitions. [2022-11-22 01:13:48,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-22 01:13:48,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:13:48,817 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] [2022-11-22 01:13:48,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 01:13:48,818 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 01:13:48,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:13:48,818 INFO L85 PathProgramCache]: Analyzing trace with hash -360349785, now seen corresponding path program 1 times [2022-11-22 01:13:48,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:13:48,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544846248] [2022-11-22 01:13:48,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:13:48,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:13:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:13:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:13:49,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:13:49,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544846248] [2022-11-22 01:13:49,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544846248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:13:49,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:13:49,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-22 01:13:49,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586571908] [2022-11-22 01:13:49,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:13:49,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:13:49,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:13:49,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:13:49,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-22 01:13:49,478 INFO L87 Difference]: Start difference. First operand 13400 states and 17770 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 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)