./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9fed3b6ecd1551705440e8c2971862b3f83812db515b8181a20d7126e9055f8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:50:04,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:50:04,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:50:04,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:50:04,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:50:04,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:50:04,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:50:04,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:50:04,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:50:04,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:50:04,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:50:04,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:50:04,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:50:04,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:50:04,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:50:04,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:50:04,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:50:04,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:50:04,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:50:04,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:50:04,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:50:04,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:50:04,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:50:04,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:50:04,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:50:04,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:50:04,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:50:04,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:50:04,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:50:04,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:50:04,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:50:04,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:50:04,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:50:04,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:50:04,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:50:04,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:50:04,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:50:04,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:50:04,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:50:04,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:50:04,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:50:04,253 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:50:04,298 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:50:04,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:50:04,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:50:04,300 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:50:04,301 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:50:04,301 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:50:04,301 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:50:04,301 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:50:04,302 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:50:04,302 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:50:04,303 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:50:04,303 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:50:04,303 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:50:04,304 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:50:04,304 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:50:04,304 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:50:04,304 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:50:04,305 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:50:04,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:50:04,306 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:50:04,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:50:04,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:50:04,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:50:04,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:50:04,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:50:04,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:50:04,308 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:50:04,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:50:04,308 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:50:04,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:50:04,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:50:04,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:50:04,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:50:04,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:50:04,310 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:50:04,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:50:04,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:50:04,310 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:50:04,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:50:04,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:50:04,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:50:04,312 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_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9fed3b6ecd1551705440e8c2971862b3f83812db515b8181a20d7126e9055f8 [2022-11-25 23:50:04,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:50:04,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:50:04,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:50:04,637 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:50:04,638 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:50:04,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-11-25 23:50:07,804 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:50:08,254 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:50:08,255 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-11-25 23:50:08,286 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/data/a697bbc7b/b93b9806af9a4162b8f9abf66020459f/FLAG416fed4dd [2022-11-25 23:50:08,302 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/data/a697bbc7b/b93b9806af9a4162b8f9abf66020459f [2022-11-25 23:50:08,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:50:08,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:50:08,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:50:08,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:50:08,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:50:08,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:50:08" (1/1) ... [2022-11-25 23:50:08,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd51e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:08, skipping insertion in model container [2022-11-25 23:50:08,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:50:08" (1/1) ... [2022-11-25 23:50:08,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:50:08,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:50:08,694 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_d92e824f-d4d9-4076-af13-e5f29b9c6d22/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[7186,7199] [2022-11-25 23:50:08,725 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_d92e824f-d4d9-4076-af13-e5f29b9c6d22/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[11327,11340] [2022-11-25 23:50:08,767 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_d92e824f-d4d9-4076-af13-e5f29b9c6d22/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[18377,18390] [2022-11-25 23:50:08,810 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_d92e824f-d4d9-4076-af13-e5f29b9c6d22/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24849,24862] [2022-11-25 23:50:08,969 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_d92e824f-d4d9-4076-af13-e5f29b9c6d22/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[43924,43937] [2022-11-25 23:50:09,085 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_d92e824f-d4d9-4076-af13-e5f29b9c6d22/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71846,71859] [2022-11-25 23:50:09,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:50:09,301 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:50:09,370 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_d92e824f-d4d9-4076-af13-e5f29b9c6d22/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[7186,7199] [2022-11-25 23:50:09,391 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_d92e824f-d4d9-4076-af13-e5f29b9c6d22/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[11327,11340] [2022-11-25 23:50:09,428 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_d92e824f-d4d9-4076-af13-e5f29b9c6d22/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[18377,18390] [2022-11-25 23:50:09,457 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_d92e824f-d4d9-4076-af13-e5f29b9c6d22/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24849,24862] [2022-11-25 23:50:09,536 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_d92e824f-d4d9-4076-af13-e5f29b9c6d22/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[43924,43937] [2022-11-25 23:50:09,658 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71846,71859] [2022-11-25 23:50:09,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:50:09,806 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:50:09,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:09 WrapperNode [2022-11-25 23:50:09,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:50:09,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:50:09,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:50:09,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:50:09,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:09" (1/1) ... [2022-11-25 23:50:09,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:09" (1/1) ... [2022-11-25 23:50:10,004 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 5645 [2022-11-25 23:50:10,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:50:10,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:50:10,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:50:10,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:50:10,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:09" (1/1) ... [2022-11-25 23:50:10,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:09" (1/1) ... [2022-11-25 23:50:10,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:09" (1/1) ... [2022-11-25 23:50:10,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:09" (1/1) ... [2022-11-25 23:50:10,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:09" (1/1) ... [2022-11-25 23:50:10,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:09" (1/1) ... [2022-11-25 23:50:10,189 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:09" (1/1) ... [2022-11-25 23:50:10,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:09" (1/1) ... [2022-11-25 23:50:10,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:50:10,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:50:10,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:50:10,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:50:10,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:09" (1/1) ... [2022-11-25 23:50:10,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:50:10,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:50:10,272 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:50:10,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:50:10,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:50:10,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:50:10,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:50:10,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:50:10,638 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:50:10,640 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:50:14,151 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:50:14,641 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:50:14,641 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:50:14,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:50:14 BoogieIcfgContainer [2022-11-25 23:50:14,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:50:14,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:50:14,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:50:14,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:50:14,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:50:08" (1/3) ... [2022-11-25 23:50:14,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309d2a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:50:14, skipping insertion in model container [2022-11-25 23:50:14,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:50:09" (2/3) ... [2022-11-25 23:50:14,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309d2a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:50:14, skipping insertion in model container [2022-11-25 23:50:14,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:50:14" (3/3) ... [2022-11-25 23:50:14,659 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-11-25 23:50:14,680 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:50:14,681 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-25 23:50:14,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:50:14,806 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;@750f635d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:50:14,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-25 23:50:14,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 1176 states, 1169 states have (on average 1.8092386655260906) internal successors, (2115), 1175 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:14,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-25 23:50:14,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:14,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:50:14,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:50:14,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:14,863 INFO L85 PathProgramCache]: Analyzing trace with hash 966667412, now seen corresponding path program 1 times [2022-11-25 23:50:14,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:14,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435745836] [2022-11-25 23:50:14,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:14,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:15,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:15,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:15,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435745836] [2022-11-25 23:50:15,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435745836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:15,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:15,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:50:15,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696112578] [2022-11-25 23:50:15,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:15,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:50:15,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:15,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:50:15,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:50:15,540 INFO L87 Difference]: Start difference. First operand has 1176 states, 1169 states have (on average 1.8092386655260906) internal successors, (2115), 1175 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:17,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:17,669 INFO L93 Difference]: Finished difference Result 2266 states and 3970 transitions. [2022-11-25 23:50:17,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:50:17,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-25 23:50:17,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:17,708 INFO L225 Difference]: With dead ends: 2266 [2022-11-25 23:50:17,708 INFO L226 Difference]: Without dead ends: 1422 [2022-11-25 23:50:17,714 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 [2022-11-25 23:50:17,718 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 6434 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6434 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:17,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6434 Valid, 1339 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-25 23:50:17,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2022-11-25 23:50:17,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1416. [2022-11-25 23:50:17,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1410 states have (on average 1.3177304964539007) internal successors, (1858), 1415 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:17,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 1858 transitions. [2022-11-25 23:50:17,899 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 1858 transitions. Word has length 50 [2022-11-25 23:50:17,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:17,900 INFO L495 AbstractCegarLoop]: Abstraction has 1416 states and 1858 transitions. [2022-11-25 23:50:17,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:17,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 1858 transitions. [2022-11-25 23:50:17,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 23:50:17,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:17,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:50:17,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:50:17,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:50:17,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:17,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1129412729, now seen corresponding path program 1 times [2022-11-25 23:50:17,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:17,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285934072] [2022-11-25 23:50:17,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:17,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:18,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:18,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:18,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285934072] [2022-11-25 23:50:18,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285934072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:18,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:18,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:50:18,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646568519] [2022-11-25 23:50:18,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:18,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:50:18,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:18,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:50:18,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:50:18,201 INFO L87 Difference]: Start difference. First operand 1416 states and 1858 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:19,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:19,589 INFO L93 Difference]: Finished difference Result 2834 states and 3747 transitions. [2022-11-25 23:50:19,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:50:19,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-25 23:50:19,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:19,602 INFO L225 Difference]: With dead ends: 2834 [2022-11-25 23:50:19,602 INFO L226 Difference]: Without dead ends: 1954 [2022-11-25 23:50:19,604 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 [2022-11-25 23:50:19,607 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 4436 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4436 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:19,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4436 Valid, 839 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 23:50:19,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2022-11-25 23:50:19,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1942. [2022-11-25 23:50:19,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1936 states have (on average 1.327995867768595) internal successors, (2571), 1941 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:19,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 2571 transitions. [2022-11-25 23:50:19,758 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 2571 transitions. Word has length 51 [2022-11-25 23:50:19,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:19,759 INFO L495 AbstractCegarLoop]: Abstraction has 1942 states and 2571 transitions. [2022-11-25 23:50:19,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:19,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 2571 transitions. [2022-11-25 23:50:19,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 23:50:19,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:19,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:50:19,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:50:19,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:50:19,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:19,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1240611768, now seen corresponding path program 1 times [2022-11-25 23:50:19,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:19,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108841810] [2022-11-25 23:50:19,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:19,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:19,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:19,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108841810] [2022-11-25 23:50:19,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108841810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:19,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:19,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:50:19,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273552820] [2022-11-25 23:50:19,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:19,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:50:19,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:19,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:50:19,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:50:19,916 INFO L87 Difference]: Start difference. First operand 1942 states and 2571 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:21,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:21,216 INFO L93 Difference]: Finished difference Result 3917 states and 5227 transitions. [2022-11-25 23:50:21,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:50:21,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-25 23:50:21,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:21,227 INFO L225 Difference]: With dead ends: 3917 [2022-11-25 23:50:21,227 INFO L226 Difference]: Without dead ends: 2626 [2022-11-25 23:50:21,230 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 [2022-11-25 23:50:21,233 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 3827 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3827 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:21,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3827 Valid, 731 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 23:50:21,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2022-11-25 23:50:21,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2616. [2022-11-25 23:50:21,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2616 states, 2610 states have (on average 1.3191570881226053) internal successors, (3443), 2615 states have internal predecessors, (3443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2616 states to 2616 states and 3443 transitions. [2022-11-25 23:50:21,404 INFO L78 Accepts]: Start accepts. Automaton has 2616 states and 3443 transitions. Word has length 51 [2022-11-25 23:50:21,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:21,404 INFO L495 AbstractCegarLoop]: Abstraction has 2616 states and 3443 transitions. [2022-11-25 23:50:21,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:21,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2616 states and 3443 transitions. [2022-11-25 23:50:21,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 23:50:21,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:21,410 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] [2022-11-25 23:50:21,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:50:21,410 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:50:21,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:21,411 INFO L85 PathProgramCache]: Analyzing trace with hash -40243798, now seen corresponding path program 1 times [2022-11-25 23:50:21,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:21,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479375992] [2022-11-25 23:50:21,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:21,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:21,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:21,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479375992] [2022-11-25 23:50:21,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479375992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:21,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:21,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:50:21,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545589879] [2022-11-25 23:50:21,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:21,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:50:21,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:21,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:50:21,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:50:21,809 INFO L87 Difference]: Start difference. First operand 2616 states and 3443 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:25,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:25,199 INFO L93 Difference]: Finished difference Result 4832 states and 6457 transitions. [2022-11-25 23:50:25,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 23:50:25,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-11-25 23:50:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:25,219 INFO L225 Difference]: With dead ends: 4832 [2022-11-25 23:50:25,220 INFO L226 Difference]: Without dead ends: 4459 [2022-11-25 23:50:25,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:50:25,233 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 2532 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 3777 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2532 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 3837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:25,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2532 Valid, 3128 Invalid, 3837 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 3777 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-25 23:50:25,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4459 states. [2022-11-25 23:50:25,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4459 to 2616. [2022-11-25 23:50:25,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2616 states, 2610 states have (on average 1.3187739463601533) internal successors, (3442), 2615 states have internal predecessors, (3442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:25,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2616 states to 2616 states and 3442 transitions. [2022-11-25 23:50:25,506 INFO L78 Accepts]: Start accepts. Automaton has 2616 states and 3442 transitions. Word has length 52 [2022-11-25 23:50:25,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:25,507 INFO L495 AbstractCegarLoop]: Abstraction has 2616 states and 3442 transitions. [2022-11-25 23:50:25,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:25,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2616 states and 3442 transitions. [2022-11-25 23:50:25,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 23:50:25,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:25,510 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] [2022-11-25 23:50:25,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:50:25,511 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:50:25,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:25,511 INFO L85 PathProgramCache]: Analyzing trace with hash -185533245, now seen corresponding path program 1 times [2022-11-25 23:50:25,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:25,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343943056] [2022-11-25 23:50:25,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:25,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:25,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:25,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:25,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343943056] [2022-11-25 23:50:25,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343943056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:25,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:25,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:50:25,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683359357] [2022-11-25 23:50:25,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:25,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:50:25,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:25,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:50:25,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:50:25,788 INFO L87 Difference]: Start difference. First operand 2616 states and 3442 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:28,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:28,570 INFO L93 Difference]: Finished difference Result 3758 states and 4961 transitions. [2022-11-25 23:50:28,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 23:50:28,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-11-25 23:50:28,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:28,583 INFO L225 Difference]: With dead ends: 3758 [2022-11-25 23:50:28,584 INFO L226 Difference]: Without dead ends: 3753 [2022-11-25 23:50:28,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:50:28,586 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 2310 mSDsluCounter, 2312 mSDsCounter, 0 mSdLazyCounter, 3184 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:28,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2310 Valid, 2909 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3184 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 23:50:28,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3753 states. [2022-11-25 23:50:28,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3753 to 2616. [2022-11-25 23:50:28,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2616 states, 2610 states have (on average 1.318390804597701) internal successors, (3441), 2615 states have internal predecessors, (3441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:28,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2616 states to 2616 states and 3441 transitions. [2022-11-25 23:50:28,874 INFO L78 Accepts]: Start accepts. Automaton has 2616 states and 3441 transitions. Word has length 52 [2022-11-25 23:50:28,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:28,876 INFO L495 AbstractCegarLoop]: Abstraction has 2616 states and 3441 transitions. [2022-11-25 23:50:28,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:28,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2616 states and 3441 transitions. [2022-11-25 23:50:28,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 23:50:28,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:28,881 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] [2022-11-25 23:50:28,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:50:28,882 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:50:28,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:28,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1651109861, now seen corresponding path program 1 times [2022-11-25 23:50:28,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:28,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612771761] [2022-11-25 23:50:28,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:28,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:29,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:29,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612771761] [2022-11-25 23:50:29,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612771761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:29,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:29,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:50:29,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099491522] [2022-11-25 23:50:29,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:29,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:50:29,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:29,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:50:29,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:50:29,217 INFO L87 Difference]: Start difference. First operand 2616 states and 3441 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:31,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:31,050 INFO L93 Difference]: Finished difference Result 4098 states and 5496 transitions. [2022-11-25 23:50:31,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 23:50:31,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-11-25 23:50:31,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:31,063 INFO L225 Difference]: With dead ends: 4098 [2022-11-25 23:50:31,063 INFO L226 Difference]: Without dead ends: 3627 [2022-11-25 23:50:31,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-25 23:50:31,066 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 4344 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 1850 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4344 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:31,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4344 Valid, 1776 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1850 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-25 23:50:31,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3627 states. [2022-11-25 23:50:31,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3627 to 2616. [2022-11-25 23:50:31,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2616 states, 2610 states have (on average 1.318007662835249) internal successors, (3440), 2615 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:31,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2616 states to 2616 states and 3440 transitions. [2022-11-25 23:50:31,427 INFO L78 Accepts]: Start accepts. Automaton has 2616 states and 3440 transitions. Word has length 52 [2022-11-25 23:50:31,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:31,428 INFO L495 AbstractCegarLoop]: Abstraction has 2616 states and 3440 transitions. [2022-11-25 23:50:31,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:31,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2616 states and 3440 transitions. [2022-11-25 23:50:31,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 23:50:31,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:31,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:50:31,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:50:31,433 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:50:31,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:31,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1538413769, now seen corresponding path program 1 times [2022-11-25 23:50:31,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:31,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437473403] [2022-11-25 23:50:31,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:31,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:31,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:31,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:31,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437473403] [2022-11-25 23:50:31,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437473403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:31,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:31,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:50:31,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794158305] [2022-11-25 23:50:31,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:31,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:50:31,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:31,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:50:31,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:31,514 INFO L87 Difference]: Start difference. First operand 2616 states and 3440 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:32,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:32,021 INFO L93 Difference]: Finished difference Result 3236 states and 4329 transitions. [2022-11-25 23:50:32,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:50:32,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-25 23:50:32,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:32,031 INFO L225 Difference]: With dead ends: 3236 [2022-11-25 23:50:32,031 INFO L226 Difference]: Without dead ends: 2551 [2022-11-25 23:50:32,033 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 [2022-11-25 23:50:32,034 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 473 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:32,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 1537 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:50:32,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2022-11-25 23:50:32,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 2549. [2022-11-25 23:50:32,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2549 states, 2543 states have (on average 1.3165552497050728) internal successors, (3348), 2548 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 3348 transitions. [2022-11-25 23:50:32,375 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 3348 transitions. Word has length 53 [2022-11-25 23:50:32,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:32,375 INFO L495 AbstractCegarLoop]: Abstraction has 2549 states and 3348 transitions. [2022-11-25 23:50:32,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:32,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 3348 transitions. [2022-11-25 23:50:32,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 23:50:32,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:32,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:50:32,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:50:32,379 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:50:32,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:32,380 INFO L85 PathProgramCache]: Analyzing trace with hash -651733059, now seen corresponding path program 1 times [2022-11-25 23:50:32,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:32,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275127407] [2022-11-25 23:50:32,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:32,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:32,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:32,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:32,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275127407] [2022-11-25 23:50:32,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275127407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:32,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:32,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:50:32,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841259585] [2022-11-25 23:50:32,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:32,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:50:32,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:32,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:50:32,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:32,448 INFO L87 Difference]: Start difference. First operand 2549 states and 3348 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:33,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:33,079 INFO L93 Difference]: Finished difference Result 3582 states and 4842 transitions. [2022-11-25 23:50:33,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:50:33,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-25 23:50:33,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:33,092 INFO L225 Difference]: With dead ends: 3582 [2022-11-25 23:50:33,093 INFO L226 Difference]: Without dead ends: 2719 [2022-11-25 23:50:33,095 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 [2022-11-25 23:50:33,096 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 485 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:33,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1500 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:50:33,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states. [2022-11-25 23:50:33,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 2717. [2022-11-25 23:50:33,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 2711 states have (on average 1.3327185540391) internal successors, (3613), 2716 states have internal predecessors, (3613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:33,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 3613 transitions. [2022-11-25 23:50:33,555 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 3613 transitions. Word has length 53 [2022-11-25 23:50:33,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:33,556 INFO L495 AbstractCegarLoop]: Abstraction has 2717 states and 3613 transitions. [2022-11-25 23:50:33,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:33,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 3613 transitions. [2022-11-25 23:50:33,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 23:50:33,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:33,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:50:33,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:50:33,560 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:50:33,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:33,560 INFO L85 PathProgramCache]: Analyzing trace with hash 408369717, now seen corresponding path program 1 times [2022-11-25 23:50:33,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:33,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276683264] [2022-11-25 23:50:33,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:33,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:33,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:33,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276683264] [2022-11-25 23:50:33,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276683264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:33,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:33,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:50:33,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497575414] [2022-11-25 23:50:33,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:33,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:50:33,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:33,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:50:33,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:33,634 INFO L87 Difference]: Start difference. First operand 2717 states and 3613 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:34,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:34,495 INFO L93 Difference]: Finished difference Result 5669 states and 7688 transitions. [2022-11-25 23:50:34,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:50:34,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-25 23:50:34,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:34,510 INFO L225 Difference]: With dead ends: 5669 [2022-11-25 23:50:34,510 INFO L226 Difference]: Without dead ends: 3932 [2022-11-25 23:50:34,514 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 [2022-11-25 23:50:34,515 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 542 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:34,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 1694 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:50:34,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2022-11-25 23:50:35,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 3926. [2022-11-25 23:50:35,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3926 states, 3920 states have (on average 1.322704081632653) internal successors, (5185), 3925 states have internal predecessors, (5185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:35,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3926 states to 3926 states and 5185 transitions. [2022-11-25 23:50:35,189 INFO L78 Accepts]: Start accepts. Automaton has 3926 states and 5185 transitions. Word has length 53 [2022-11-25 23:50:35,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:35,189 INFO L495 AbstractCegarLoop]: Abstraction has 3926 states and 5185 transitions. [2022-11-25 23:50:35,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:35,190 INFO L276 IsEmpty]: Start isEmpty. Operand 3926 states and 5185 transitions. [2022-11-25 23:50:35,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 23:50:35,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:35,194 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] [2022-11-25 23:50:35,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:50:35,195 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:50:35,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:35,195 INFO L85 PathProgramCache]: Analyzing trace with hash 888209781, now seen corresponding path program 1 times [2022-11-25 23:50:35,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:35,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515718327] [2022-11-25 23:50:35,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:35,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:35,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:35,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:35,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515718327] [2022-11-25 23:50:35,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515718327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:35,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:35,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:50:35,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034018247] [2022-11-25 23:50:35,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:35,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:50:35,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:35,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:50:35,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:35,265 INFO L87 Difference]: Start difference. First operand 3926 states and 5185 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:35,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:35,953 INFO L93 Difference]: Finished difference Result 6850 states and 9152 transitions. [2022-11-25 23:50:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:50:35,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-11-25 23:50:35,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:35,965 INFO L225 Difference]: With dead ends: 6850 [2022-11-25 23:50:35,965 INFO L226 Difference]: Without dead ends: 3884 [2022-11-25 23:50:35,970 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 [2022-11-25 23:50:35,970 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 739 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:35,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 1087 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:50:35,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2022-11-25 23:50:36,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 3131. [2022-11-25 23:50:36,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 3126 states have (on average 1.3317338451695457) internal successors, (4163), 3130 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:36,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 4163 transitions. [2022-11-25 23:50:36,410 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 4163 transitions. Word has length 54 [2022-11-25 23:50:36,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:36,411 INFO L495 AbstractCegarLoop]: Abstraction has 3131 states and 4163 transitions. [2022-11-25 23:50:36,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:36,411 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 4163 transitions. [2022-11-25 23:50:36,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 23:50:36,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:36,414 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] [2022-11-25 23:50:36,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:50:36,415 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:50:36,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:36,418 INFO L85 PathProgramCache]: Analyzing trace with hash -290391896, now seen corresponding path program 1 times [2022-11-25 23:50:36,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:36,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120215595] [2022-11-25 23:50:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:36,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:36,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:36,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:36,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120215595] [2022-11-25 23:50:36,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120215595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:36,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:36,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:50:36,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666686954] [2022-11-25 23:50:36,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:36,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:50:36,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:36,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:50:36,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:36,474 INFO L87 Difference]: Start difference. First operand 3131 states and 4163 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:37,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:37,331 INFO L93 Difference]: Finished difference Result 5633 states and 7602 transitions. [2022-11-25 23:50:37,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:50:37,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-11-25 23:50:37,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:37,346 INFO L225 Difference]: With dead ends: 5633 [2022-11-25 23:50:37,353 INFO L226 Difference]: Without dead ends: 3189 [2022-11-25 23:50:37,357 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 [2022-11-25 23:50:37,358 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 564 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:37,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 871 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:50:37,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2022-11-25 23:50:37,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 2598. [2022-11-25 23:50:37,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2598 states, 2594 states have (on average 1.3326908249807248) internal successors, (3457), 2597 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:37,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 3457 transitions. [2022-11-25 23:50:37,906 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 3457 transitions. Word has length 54 [2022-11-25 23:50:37,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:37,906 INFO L495 AbstractCegarLoop]: Abstraction has 2598 states and 3457 transitions. [2022-11-25 23:50:37,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:37,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 3457 transitions. [2022-11-25 23:50:37,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 23:50:37,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:37,910 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] [2022-11-25 23:50:37,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 23:50:37,910 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:50:37,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:37,911 INFO L85 PathProgramCache]: Analyzing trace with hash -364061502, now seen corresponding path program 1 times [2022-11-25 23:50:37,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:37,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872412952] [2022-11-25 23:50:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:37,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:37,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:37,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872412952] [2022-11-25 23:50:37,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872412952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:37,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:37,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:50:37,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445915120] [2022-11-25 23:50:37,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:37,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:50:37,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:37,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:50:37,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:37,966 INFO L87 Difference]: Start difference. First operand 2598 states and 3457 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:38,499 INFO L93 Difference]: Finished difference Result 4716 states and 6358 transitions. [2022-11-25 23:50:38,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:50:38,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-11-25 23:50:38,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:38,505 INFO L225 Difference]: With dead ends: 4716 [2022-11-25 23:50:38,505 INFO L226 Difference]: Without dead ends: 2425 [2022-11-25 23:50:38,509 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 [2022-11-25 23:50:38,509 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 406 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:38,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 691 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:50:38,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2022-11-25 23:50:38,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2191. [2022-11-25 23:50:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 2187 states have (on average 1.337448559670782) internal successors, (2925), 2190 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:38,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 2925 transitions. [2022-11-25 23:50:38,851 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 2925 transitions. Word has length 54 [2022-11-25 23:50:38,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:38,851 INFO L495 AbstractCegarLoop]: Abstraction has 2191 states and 2925 transitions. [2022-11-25 23:50:38,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:38,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 2925 transitions. [2022-11-25 23:50:38,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 23:50:38,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:38,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:50:38,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 23:50:38,854 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:50:38,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:38,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1325150352, now seen corresponding path program 1 times [2022-11-25 23:50:38,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:38,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677532095] [2022-11-25 23:50:38,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:38,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:40,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:40,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677532095] [2022-11-25 23:50:40,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677532095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:40,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:40,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-25 23:50:40,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870410055] [2022-11-25 23:50:40,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:40,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 23:50:40,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:40,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 23:50:40,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-25 23:50:40,229 INFO L87 Difference]: Start difference. First operand 2191 states and 2925 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:45,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:45,145 INFO L93 Difference]: Finished difference Result 4407 states and 5850 transitions. [2022-11-25 23:50:45,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 23:50:45,145 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-25 23:50:45,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:45,152 INFO L225 Difference]: With dead ends: 4407 [2022-11-25 23:50:45,152 INFO L226 Difference]: Without dead ends: 4403 [2022-11-25 23:50:45,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=212, Invalid=1048, Unknown=0, NotChecked=0, Total=1260 [2022-11-25 23:50:45,155 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 4022 mSDsluCounter, 6833 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4022 SdHoareTripleChecker+Valid, 7413 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:45,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4022 Valid, 7413 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2968 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-25 23:50:45,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4403 states. [2022-11-25 23:50:45,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4403 to 2191. [2022-11-25 23:50:45,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 2187 states have (on average 1.3369913122999544) internal successors, (2924), 2190 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:45,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 2924 transitions. [2022-11-25 23:50:45,652 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 2924 transitions. Word has length 55 [2022-11-25 23:50:45,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:45,653 INFO L495 AbstractCegarLoop]: Abstraction has 2191 states and 2924 transitions. [2022-11-25 23:50:45,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:45,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 2924 transitions. [2022-11-25 23:50:45,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 23:50:45,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:45,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:50:45,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 23:50:45,655 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:50:45,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:45,656 INFO L85 PathProgramCache]: Analyzing trace with hash -548611186, now seen corresponding path program 1 times [2022-11-25 23:50:45,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:45,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49465994] [2022-11-25 23:50:45,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:45,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:46,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:46,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:46,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49465994] [2022-11-25 23:50:46,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49465994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:46,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:46,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 23:50:46,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919658749] [2022-11-25 23:50:46,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:46,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 23:50:46,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:46,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 23:50:46,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-25 23:50:46,190 INFO L87 Difference]: Start difference. First operand 2191 states and 2924 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:48,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:48,391 INFO L93 Difference]: Finished difference Result 4153 states and 5532 transitions. [2022-11-25 23:50:48,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 23:50:48,391 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-25 23:50:48,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:48,399 INFO L225 Difference]: With dead ends: 4153 [2022-11-25 23:50:48,399 INFO L226 Difference]: Without dead ends: 3903 [2022-11-25 23:50:48,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2022-11-25 23:50:48,402 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 3413 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3413 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:48,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3413 Valid, 2232 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:50:48,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3903 states. [2022-11-25 23:50:48,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3903 to 2151. [2022-11-25 23:50:48,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 2149 states have (on average 1.3382968822708237) internal successors, (2876), 2150 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:48,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 2876 transitions. [2022-11-25 23:50:48,995 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 2876 transitions. Word has length 55 [2022-11-25 23:50:48,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:48,995 INFO L495 AbstractCegarLoop]: Abstraction has 2151 states and 2876 transitions. [2022-11-25 23:50:48,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:48,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 2876 transitions. [2022-11-25 23:50:48,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 23:50:48,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:48,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:50:48,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 23:50:48,998 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:50:48,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:48,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2003453, now seen corresponding path program 1 times [2022-11-25 23:50:48,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:48,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093326695] [2022-11-25 23:50:48,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:48,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:50,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:50,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093326695] [2022-11-25 23:50:50,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093326695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:50,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:50,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-25 23:50:50,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701796299] [2022-11-25 23:50:50,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:50,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 23:50:50,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:50,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 23:50:50,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:50:50,040 INFO L87 Difference]: Start difference. First operand 2151 states and 2876 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:53,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:53,087 INFO L93 Difference]: Finished difference Result 3131 states and 4162 transitions. [2022-11-25 23:50:53,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 23:50:53,088 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-25 23:50:53,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:53,094 INFO L225 Difference]: With dead ends: 3131 [2022-11-25 23:50:53,095 INFO L226 Difference]: Without dead ends: 3004 [2022-11-25 23:50:53,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2022-11-25 23:50:53,096 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 2142 mSDsluCounter, 4417 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2142 SdHoareTripleChecker+Valid, 4973 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:53,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2142 Valid, 4973 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 23:50:53,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2022-11-25 23:50:53,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 2130. [2022-11-25 23:50:53,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2130 states, 2129 states have (on average 1.3381869422263974) internal successors, (2849), 2129 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:53,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 2849 transitions. [2022-11-25 23:50:53,769 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 2849 transitions. Word has length 56 [2022-11-25 23:50:53,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:53,769 INFO L495 AbstractCegarLoop]: Abstraction has 2130 states and 2849 transitions. [2022-11-25 23:50:53,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 14 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:53,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 2849 transitions. [2022-11-25 23:50:53,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 23:50:53,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:53,772 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] [2022-11-25 23:50:53,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 23:50:53,773 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:50:53,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:53,774 INFO L85 PathProgramCache]: Analyzing trace with hash 192214682, now seen corresponding path program 1 times [2022-11-25 23:50:53,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:53,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192932885] [2022-11-25 23:50:53,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:53,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:53,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:53,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:53,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192932885] [2022-11-25 23:50:53,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192932885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:53,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:53,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:50:53,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352694902] [2022-11-25 23:50:53,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:53,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:50:53,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:53,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:50:53,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:53,897 INFO L87 Difference]: Start difference. First operand 2130 states and 2849 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:55,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:55,151 INFO L93 Difference]: Finished difference Result 4590 states and 6315 transitions. [2022-11-25 23:50:55,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:50:55,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-25 23:50:55,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:55,155 INFO L225 Difference]: With dead ends: 4590 [2022-11-25 23:50:55,156 INFO L226 Difference]: Without dead ends: 3020 [2022-11-25 23:50:55,158 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 [2022-11-25 23:50:55,158 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 293 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:55,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 711 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:50:55,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2022-11-25 23:50:55,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 2754. [2022-11-25 23:50:55,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2754 states, 2753 states have (on average 1.341808935706502) internal successors, (3694), 2753 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:55,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 3694 transitions. [2022-11-25 23:50:55,904 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 3694 transitions. Word has length 58 [2022-11-25 23:50:55,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:55,904 INFO L495 AbstractCegarLoop]: Abstraction has 2754 states and 3694 transitions. [2022-11-25 23:50:55,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:55,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 3694 transitions. [2022-11-25 23:50:55,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 23:50:55,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:55,907 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] [2022-11-25 23:50:55,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 23:50:55,907 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:50:55,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:55,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1716460509, now seen corresponding path program 1 times [2022-11-25 23:50:55,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:55,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263785710] [2022-11-25 23:50:55,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:55,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:56,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:56,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263785710] [2022-11-25 23:50:56,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263785710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:56,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:56,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:50:56,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595439700] [2022-11-25 23:50:56,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:56,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:50:56,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:56,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:50:56,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:50:56,017 INFO L87 Difference]: Start difference. First operand 2754 states and 3694 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:56,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:56,881 INFO L93 Difference]: Finished difference Result 4680 states and 6357 transitions. [2022-11-25 23:50:56,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:50:56,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-25 23:50:56,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:56,889 INFO L225 Difference]: With dead ends: 4680 [2022-11-25 23:50:56,889 INFO L226 Difference]: Without dead ends: 2478 [2022-11-25 23:50:56,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:50:56,893 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 786 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:56,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 660 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:50:56,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2022-11-25 23:50:57,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2474. [2022-11-25 23:50:57,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2473 states have (on average 1.3299636069551153) internal successors, (3289), 2473 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:57,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3289 transitions. [2022-11-25 23:50:57,703 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3289 transitions. Word has length 58 [2022-11-25 23:50:57,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:50:57,703 INFO L495 AbstractCegarLoop]: Abstraction has 2474 states and 3289 transitions. [2022-11-25 23:50:57,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:57,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3289 transitions. [2022-11-25 23:50:57,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-25 23:50:57,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:50:57,706 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] [2022-11-25 23:50:57,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 23:50:57,706 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:50:57,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:50:57,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1989278828, now seen corresponding path program 1 times [2022-11-25 23:50:57,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:50:57,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444343427] [2022-11-25 23:50:57,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:50:57,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:50:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:50:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:50:57,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:50:57,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444343427] [2022-11-25 23:50:57,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444343427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:50:57,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:50:57,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:50:57,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614424304] [2022-11-25 23:50:57,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:50:57,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:50:57,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:50:57,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:50:57,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:50:57,810 INFO L87 Difference]: Start difference. First operand 2474 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:50:59,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:50:59,177 INFO L93 Difference]: Finished difference Result 5458 states and 7420 transitions. [2022-11-25 23:50:59,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:50:59,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-11-25 23:50:59,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:50:59,182 INFO L225 Difference]: With dead ends: 5458 [2022-11-25 23:50:59,182 INFO L226 Difference]: Without dead ends: 3670 [2022-11-25 23:50:59,184 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 [2022-11-25 23:50:59,184 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 232 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:50:59,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 705 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:50:59,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2022-11-25 23:51:00,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3298. [2022-11-25 23:51:00,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3298 states, 3297 states have (on average 1.3281771307249015) internal successors, (4379), 3297 states have internal predecessors, (4379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:00,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3298 states to 3298 states and 4379 transitions. [2022-11-25 23:51:00,216 INFO L78 Accepts]: Start accepts. Automaton has 3298 states and 4379 transitions. Word has length 60 [2022-11-25 23:51:00,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:00,217 INFO L495 AbstractCegarLoop]: Abstraction has 3298 states and 4379 transitions. [2022-11-25 23:51:00,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:00,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3298 states and 4379 transitions. [2022-11-25 23:51:00,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-25 23:51:00,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:00,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:51:00,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 23:51:00,220 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:51:00,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:00,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1915569379, now seen corresponding path program 1 times [2022-11-25 23:51:00,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:00,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848652823] [2022-11-25 23:51:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:00,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:00,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:51:00,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:00,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848652823] [2022-11-25 23:51:00,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848652823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:00,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:00,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 23:51:00,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502054722] [2022-11-25 23:51:00,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:00,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 23:51:00,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:00,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 23:51:00,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:51:00,635 INFO L87 Difference]: Start difference. First operand 3298 states and 4379 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 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) [2022-11-25 23:51:03,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:03,998 INFO L93 Difference]: Finished difference Result 7612 states and 10100 transitions. [2022-11-25 23:51:03,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 23:51:03,998 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 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 [2022-11-25 23:51:03,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:04,006 INFO L225 Difference]: With dead ends: 7612 [2022-11-25 23:51:04,006 INFO L226 Difference]: Without dead ends: 7610 [2022-11-25 23:51:04,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-11-25 23:51:04,008 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 1834 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:04,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 2615 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:51:04,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7610 states. [2022-11-25 23:51:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7610 to 3885. [2022-11-25 23:51:05,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3885 states, 3884 states have (on average 1.3218331616889805) internal successors, (5134), 3884 states have internal predecessors, (5134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:05,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3885 states to 3885 states and 5134 transitions. [2022-11-25 23:51:05,351 INFO L78 Accepts]: Start accepts. Automaton has 3885 states and 5134 transitions. Word has length 64 [2022-11-25 23:51:05,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:05,351 INFO L495 AbstractCegarLoop]: Abstraction has 3885 states and 5134 transitions. [2022-11-25 23:51:05,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 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) [2022-11-25 23:51:05,351 INFO L276 IsEmpty]: Start isEmpty. Operand 3885 states and 5134 transitions. [2022-11-25 23:51:05,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-25 23:51:05,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:05,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:51:05,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 23:51:05,354 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:51:05,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:05,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1273770188, now seen corresponding path program 1 times [2022-11-25 23:51:05,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:05,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014828016] [2022-11-25 23:51:05,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:05,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:51:05,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:05,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014828016] [2022-11-25 23:51:05,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014828016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:05,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:05,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 23:51:05,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203082184] [2022-11-25 23:51:05,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:05,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 23:51:05,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:05,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 23:51:05,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:51:05,703 INFO L87 Difference]: Start difference. First operand 3885 states and 5134 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:09,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:09,119 INFO L93 Difference]: Finished difference Result 7476 states and 9925 transitions. [2022-11-25 23:51:09,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 23:51:09,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-11-25 23:51:09,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:09,129 INFO L225 Difference]: With dead ends: 7476 [2022-11-25 23:51:09,129 INFO L226 Difference]: Without dead ends: 7474 [2022-11-25 23:51:09,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-25 23:51:09,131 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 1403 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:09,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 2708 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:51:09,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7474 states. [2022-11-25 23:51:10,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7474 to 4187. [2022-11-25 23:51:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4187 states, 4186 states have (on average 1.31820353559484) internal successors, (5518), 4186 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:10,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4187 states to 4187 states and 5518 transitions. [2022-11-25 23:51:10,695 INFO L78 Accepts]: Start accepts. Automaton has 4187 states and 5518 transitions. Word has length 70 [2022-11-25 23:51:10,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:10,695 INFO L495 AbstractCegarLoop]: Abstraction has 4187 states and 5518 transitions. [2022-11-25 23:51:10,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:10,695 INFO L276 IsEmpty]: Start isEmpty. Operand 4187 states and 5518 transitions. [2022-11-25 23:51:10,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-25 23:51:10,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:10,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:51:10,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 23:51:10,699 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:51:10,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:10,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2076398936, now seen corresponding path program 1 times [2022-11-25 23:51:10,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:10,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432342703] [2022-11-25 23:51:10,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:10,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:11,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:51:11,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:11,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432342703] [2022-11-25 23:51:11,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432342703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:11,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:11,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 23:51:11,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297404976] [2022-11-25 23:51:11,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:11,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 23:51:11,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:11,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 23:51:11,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:51:11,070 INFO L87 Difference]: Start difference. First operand 4187 states and 5518 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:14,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:14,626 INFO L93 Difference]: Finished difference Result 7438 states and 9859 transitions. [2022-11-25 23:51:14,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 23:51:14,627 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-25 23:51:14,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:14,636 INFO L225 Difference]: With dead ends: 7438 [2022-11-25 23:51:14,636 INFO L226 Difference]: Without dead ends: 7436 [2022-11-25 23:51:14,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-25 23:51:14,639 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 1447 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:14,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 2557 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:51:14,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7436 states. [2022-11-25 23:51:16,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7436 to 4484. [2022-11-25 23:51:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4484 states, 4483 states have (on average 1.3154137854115548) internal successors, (5897), 4483 states have internal predecessors, (5897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:16,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 5897 transitions. [2022-11-25 23:51:16,664 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 5897 transitions. Word has length 71 [2022-11-25 23:51:16,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:16,664 INFO L495 AbstractCegarLoop]: Abstraction has 4484 states and 5897 transitions. [2022-11-25 23:51:16,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:16,665 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 5897 transitions. [2022-11-25 23:51:16,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-25 23:51:16,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:16,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:51:16,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 23:51:16,668 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:51:16,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:16,669 INFO L85 PathProgramCache]: Analyzing trace with hash -419293680, now seen corresponding path program 1 times [2022-11-25 23:51:16,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:16,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124353735] [2022-11-25 23:51:16,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:16,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:17,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:51:17,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:17,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124353735] [2022-11-25 23:51:17,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124353735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:17,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:17,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 23:51:17,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291832074] [2022-11-25 23:51:17,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:17,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 23:51:17,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:17,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 23:51:17,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:51:17,026 INFO L87 Difference]: Start difference. First operand 4484 states and 5897 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:20,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:20,568 INFO L93 Difference]: Finished difference Result 7007 states and 9273 transitions. [2022-11-25 23:51:20,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 23:51:20,571 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-25 23:51:20,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:20,579 INFO L225 Difference]: With dead ends: 7007 [2022-11-25 23:51:20,579 INFO L226 Difference]: Without dead ends: 7005 [2022-11-25 23:51:20,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2022-11-25 23:51:20,582 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 1482 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:20,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 2318 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:51:20,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7005 states. [2022-11-25 23:51:22,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7005 to 4452. [2022-11-25 23:51:22,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 4451 states have (on average 1.315884070995282) internal successors, (5857), 4451 states have internal predecessors, (5857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:22,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 5857 transitions. [2022-11-25 23:51:22,407 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 5857 transitions. Word has length 71 [2022-11-25 23:51:22,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:22,408 INFO L495 AbstractCegarLoop]: Abstraction has 4452 states and 5857 transitions. [2022-11-25 23:51:22,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:22,408 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 5857 transitions. [2022-11-25 23:51:22,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-25 23:51:22,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:22,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:51:22,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 23:51:22,412 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:51:22,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:22,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1837833514, now seen corresponding path program 1 times [2022-11-25 23:51:22,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:22,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340032633] [2022-11-25 23:51:22,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:22,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:22,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:51:22,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:22,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340032633] [2022-11-25 23:51:22,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340032633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:22,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:22,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:51:22,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908938393] [2022-11-25 23:51:22,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:22,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:51:22,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:22,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:51:22,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:51:22,525 INFO L87 Difference]: Start difference. First operand 4452 states and 5857 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:25,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:25,161 INFO L93 Difference]: Finished difference Result 8320 states and 11193 transitions. [2022-11-25 23:51:25,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:51:25,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-11-25 23:51:25,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:25,168 INFO L225 Difference]: With dead ends: 8320 [2022-11-25 23:51:25,168 INFO L226 Difference]: Without dead ends: 5848 [2022-11-25 23:51:25,172 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 [2022-11-25 23:51:25,172 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 261 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:25,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 703 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:51:25,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5848 states. [2022-11-25 23:51:27,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5848 to 5414. [2022-11-25 23:51:27,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5413 states have (on average 1.3160908922963237) internal successors, (7124), 5413 states have internal predecessors, (7124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:27,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 7124 transitions. [2022-11-25 23:51:27,781 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 7124 transitions. Word has length 72 [2022-11-25 23:51:27,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:27,781 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 7124 transitions. [2022-11-25 23:51:27,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:27,781 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 7124 transitions. [2022-11-25 23:51:27,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-25 23:51:27,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:27,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:51:27,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 23:51:27,786 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:51:27,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:27,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1350800496, now seen corresponding path program 1 times [2022-11-25 23:51:27,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:27,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113000907] [2022-11-25 23:51:27,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:27,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:28,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 23:51:28,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:28,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113000907] [2022-11-25 23:51:28,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113000907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:28,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:51:28,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:51:28,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235639826] [2022-11-25 23:51:28,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:28,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:51:28,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:28,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:51:28,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:51:28,049 INFO L87 Difference]: Start difference. First operand 5414 states and 7124 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 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) [2022-11-25 23:51:34,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:34,025 INFO L93 Difference]: Finished difference Result 11906 states and 15579 transitions. [2022-11-25 23:51:34,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 23:51:34,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 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 72 [2022-11-25 23:51:34,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:34,035 INFO L225 Difference]: With dead ends: 11906 [2022-11-25 23:51:34,036 INFO L226 Difference]: Without dead ends: 9699 [2022-11-25 23:51:34,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2022-11-25 23:51:34,041 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 1485 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:34,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1250 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 23:51:34,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9699 states. [2022-11-25 23:51:36,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9699 to 5394. [2022-11-25 23:51:36,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5393 states have (on average 1.3167068422028556) internal successors, (7101), 5393 states have internal predecessors, (7101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:36,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 7101 transitions. [2022-11-25 23:51:36,497 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 7101 transitions. Word has length 72 [2022-11-25 23:51:36,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:36,497 INFO L495 AbstractCegarLoop]: Abstraction has 5394 states and 7101 transitions. [2022-11-25 23:51:36,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 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) [2022-11-25 23:51:36,497 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 7101 transitions. [2022-11-25 23:51:36,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 23:51:36,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:36,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:51:36,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-25 23:51:36,500 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:51:36,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:36,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1747224616, now seen corresponding path program 1 times [2022-11-25 23:51:36,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:36,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642651395] [2022-11-25 23:51:36,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:36,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:37,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:51:37,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:37,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642651395] [2022-11-25 23:51:37,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642651395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:51:37,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143930895] [2022-11-25 23:51:37,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:37,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:51:37,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:51:37,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:51:37,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:51:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:38,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-25 23:51:38,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:51:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 23:51:39,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:51:39,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143930895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:39,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:51:39,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 30 [2022-11-25 23:51:39,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008469907] [2022-11-25 23:51:39,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:39,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 23:51:39,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:39,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 23:51:39,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2022-11-25 23:51:39,643 INFO L87 Difference]: Start difference. First operand 5394 states and 7101 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:47,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:47,611 INFO L93 Difference]: Finished difference Result 13321 states and 17552 transitions. [2022-11-25 23:51:47,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 23:51:47,612 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 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 73 [2022-11-25 23:51:47,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:47,624 INFO L225 Difference]: With dead ends: 13321 [2022-11-25 23:51:47,624 INFO L226 Difference]: Without dead ends: 11136 [2022-11-25 23:51:47,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=222, Invalid=1584, Unknown=0, NotChecked=0, Total=1806 [2022-11-25 23:51:47,629 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 2776 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2776 SdHoareTripleChecker+Valid, 3478 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:47,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2776 Valid, 3478 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 23:51:47,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11136 states. [2022-11-25 23:51:50,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11136 to 5639. [2022-11-25 23:51:50,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5639 states, 5638 states have (on average 1.3167789996452643) internal successors, (7424), 5638 states have internal predecessors, (7424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:50,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5639 states to 5639 states and 7424 transitions. [2022-11-25 23:51:50,117 INFO L78 Accepts]: Start accepts. Automaton has 5639 states and 7424 transitions. Word has length 73 [2022-11-25 23:51:50,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:50,117 INFO L495 AbstractCegarLoop]: Abstraction has 5639 states and 7424 transitions. [2022-11-25 23:51:50,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:50,118 INFO L276 IsEmpty]: Start isEmpty. Operand 5639 states and 7424 transitions. [2022-11-25 23:51:50,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 23:51:50,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:50,120 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:51:50,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:51:50,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-25 23:51:50,327 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:51:50,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:50,327 INFO L85 PathProgramCache]: Analyzing trace with hash -2013072359, now seen corresponding path program 1 times [2022-11-25 23:51:50,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:50,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461050831] [2022-11-25 23:51:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:50,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:51:51,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:51:51,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461050831] [2022-11-25 23:51:51,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461050831] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:51:51,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777559207] [2022-11-25 23:51:51,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:51,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:51:51,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:51:51,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:51:51,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:51:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:51:51,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 23:51:51,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:51:52,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 23:51:52,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:51:52,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777559207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:51:52,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:51:52,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 22 [2022-11-25 23:51:52,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075811765] [2022-11-25 23:51:52,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:51:52,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:51:52,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:51:52,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:51:52,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-11-25 23:51:52,137 INFO L87 Difference]: Start difference. First operand 5639 states and 7424 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:56,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:56,886 INFO L93 Difference]: Finished difference Result 9911 states and 13059 transitions. [2022-11-25 23:51:56,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 23:51:56,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 73 [2022-11-25 23:51:56,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:56,894 INFO L225 Difference]: With dead ends: 9911 [2022-11-25 23:51:56,894 INFO L226 Difference]: Without dead ends: 7711 [2022-11-25 23:51:56,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2022-11-25 23:51:56,897 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 916 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:56,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 1146 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 23:51:56,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7711 states. [2022-11-25 23:51:59,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7711 to 5621. [2022-11-25 23:51:59,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5621 states, 5620 states have (on average 1.3174377224199287) internal successors, (7404), 5620 states have internal predecessors, (7404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:59,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5621 states to 5621 states and 7404 transitions. [2022-11-25 23:51:59,541 INFO L78 Accepts]: Start accepts. Automaton has 5621 states and 7404 transitions. Word has length 73 [2022-11-25 23:51:59,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:51:59,541 INFO L495 AbstractCegarLoop]: Abstraction has 5621 states and 7404 transitions. [2022-11-25 23:51:59,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:51:59,542 INFO L276 IsEmpty]: Start isEmpty. Operand 5621 states and 7404 transitions. [2022-11-25 23:51:59,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 23:51:59,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:51:59,543 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:51:59,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:51:59,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:51:59,744 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:51:59,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:51:59,744 INFO L85 PathProgramCache]: Analyzing trace with hash 561866313, now seen corresponding path program 1 times [2022-11-25 23:51:59,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:51:59,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122899953] [2022-11-25 23:51:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:51:59,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:51:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:52:01,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:52:01,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:52:01,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122899953] [2022-11-25 23:52:01,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122899953] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:52:01,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352939731] [2022-11-25 23:52:01,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:52:01,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:52:01,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:52:01,012 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:52:01,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:52:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:52:01,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 23:52:01,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:52:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 23:52:01,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:52:01,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352939731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:52:01,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:52:01,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [18] total 23 [2022-11-25 23:52:01,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683844517] [2022-11-25 23:52:01,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:52:01,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:52:01,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:52:01,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:52:01,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-11-25 23:52:01,580 INFO L87 Difference]: Start difference. First operand 5621 states and 7404 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:52:05,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:52:05,836 INFO L93 Difference]: Finished difference Result 9219 states and 12142 transitions. [2022-11-25 23:52:05,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:52:05,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 73 [2022-11-25 23:52:05,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:52:05,844 INFO L225 Difference]: With dead ends: 9219 [2022-11-25 23:52:05,844 INFO L226 Difference]: Without dead ends: 7017 [2022-11-25 23:52:05,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2022-11-25 23:52:05,847 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 1011 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:52:05,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 795 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:52:05,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7017 states. [2022-11-25 23:52:08,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7017 to 5609. [2022-11-25 23:52:08,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5609 states, 5608 states have (on average 1.3179386590584878) internal successors, (7391), 5608 states have internal predecessors, (7391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:52:08,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5609 states to 5609 states and 7391 transitions. [2022-11-25 23:52:08,335 INFO L78 Accepts]: Start accepts. Automaton has 5609 states and 7391 transitions. Word has length 73 [2022-11-25 23:52:08,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:52:08,336 INFO L495 AbstractCegarLoop]: Abstraction has 5609 states and 7391 transitions. [2022-11-25 23:52:08,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:52:08,336 INFO L276 IsEmpty]: Start isEmpty. Operand 5609 states and 7391 transitions. [2022-11-25 23:52:08,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-25 23:52:08,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:52:08,337 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:52:08,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:52:08,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-25 23:52:08,538 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:52:08,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:52:08,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1652876061, now seen corresponding path program 1 times [2022-11-25 23:52:08,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:52:08,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470159298] [2022-11-25 23:52:08,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:52:08,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:52:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:52:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:52:09,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:52:09,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470159298] [2022-11-25 23:52:09,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470159298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:52:09,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136237886] [2022-11-25 23:52:09,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:52:09,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:52:09,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:52:09,451 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:52:09,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:52:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:52:09,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-25 23:52:09,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:52:12,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:52:12,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:52:12,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136237886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:52:12,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:52:12,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2022-11-25 23:52:12,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797016797] [2022-11-25 23:52:12,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:52:12,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 23:52:12,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:52:12,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 23:52:12,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2022-11-25 23:52:12,184 INFO L87 Difference]: Start difference. First operand 5609 states and 7391 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:52:18,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:52:18,682 INFO L93 Difference]: Finished difference Result 11338 states and 15006 transitions. [2022-11-25 23:52:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 23:52:18,683 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-25 23:52:18,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:52:18,694 INFO L225 Difference]: With dead ends: 11338 [2022-11-25 23:52:18,694 INFO L226 Difference]: Without dead ends: 9156 [2022-11-25 23:52:18,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=167, Invalid=955, Unknown=0, NotChecked=0, Total=1122 [2022-11-25 23:52:18,698 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1705 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:52:18,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 2838 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 23:52:18,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9156 states. [2022-11-25 23:52:22,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9156 to 6381. [2022-11-25 23:52:22,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6381 states, 6380 states have (on average 1.3213166144200628) internal successors, (8430), 6380 states have internal predecessors, (8430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:52:22,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 8430 transitions. [2022-11-25 23:52:22,067 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 8430 transitions. Word has length 74 [2022-11-25 23:52:22,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:52:22,067 INFO L495 AbstractCegarLoop]: Abstraction has 6381 states and 8430 transitions. [2022-11-25 23:52:22,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:52:22,068 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 8430 transitions. [2022-11-25 23:52:22,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-25 23:52:22,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:52:22,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:52:22,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 23:52:22,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-25 23:52:22,270 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:52:22,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:52:22,271 INFO L85 PathProgramCache]: Analyzing trace with hash -419026070, now seen corresponding path program 1 times [2022-11-25 23:52:22,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:52:22,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609279782] [2022-11-25 23:52:22,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:52:22,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:52:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:52:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:52:23,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:52:23,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609279782] [2022-11-25 23:52:23,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609279782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:52:23,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643160286] [2022-11-25 23:52:23,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:52:23,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:52:23,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:52:23,137 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:52:23,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:52:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:52:23,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-25 23:52:23,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:52:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:52:27,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:52:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:52:40,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643160286] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:52:40,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1545918640] [2022-11-25 23:52:40,880 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-11-25 23:52:40,880 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:52:40,884 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:52:40,894 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:52:40,895 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:52:41,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:52:41,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:52:41,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-25 23:52:41,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:52:41,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:52:41,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:52:41,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-25 23:52:44,608 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:53:47,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1545918640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:53:47,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:53:47,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [16, 24, 24] total 93 [2022-11-25 23:53:47,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326329261] [2022-11-25 23:53:47,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:53:47,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-25 23:53:47,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:53:47,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-25 23:53:47,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1529, Invalid=7027, Unknown=0, NotChecked=0, Total=8556 [2022-11-25 23:53:47,631 INFO L87 Difference]: Start difference. First operand 6381 states and 8430 transitions. Second operand has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:14,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:54:14,906 INFO L93 Difference]: Finished difference Result 8665 states and 11489 transitions. [2022-11-25 23:54:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-25 23:54:14,906 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-25 23:54:14,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:54:14,913 INFO L225 Difference]: With dead ends: 8665 [2022-11-25 23:54:14,913 INFO L226 Difference]: Without dead ends: 6367 [2022-11-25 23:54:14,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 138 SyntacticMatches, 9 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4646 ImplicationChecksByTransitivity, 67.0s TimeCoverageRelationStatistics Valid=1529, Invalid=7027, Unknown=0, NotChecked=0, Total=8556 [2022-11-25 23:54:14,920 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 8 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 6556 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 6557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:54:14,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 561 Invalid, 6557 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 6556 Invalid, 0 Unknown, 0 Unchecked, 23.6s Time] [2022-11-25 23:54:14,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6367 states. [2022-11-25 23:54:18,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6367 to 6367. [2022-11-25 23:54:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6367 states, 6366 states have (on average 1.3217090794847628) internal successors, (8414), 6366 states have internal predecessors, (8414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6367 states to 6367 states and 8414 transitions. [2022-11-25 23:54:18,229 INFO L78 Accepts]: Start accepts. Automaton has 6367 states and 8414 transitions. Word has length 74 [2022-11-25 23:54:18,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:54:18,229 INFO L495 AbstractCegarLoop]: Abstraction has 6367 states and 8414 transitions. [2022-11-25 23:54:18,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 34 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:54:18,229 INFO L276 IsEmpty]: Start isEmpty. Operand 6367 states and 8414 transitions. [2022-11-25 23:54:18,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-25 23:54:18,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:54:18,231 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:54:18,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 23:54:18,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-25 23:54:18,438 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:54:18,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:54:18,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1384191573, now seen corresponding path program 1 times [2022-11-25 23:54:18,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:54:18,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403596456] [2022-11-25 23:54:18,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:18,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:54:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:54:19,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:54:19,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403596456] [2022-11-25 23:54:19,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403596456] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:54:19,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766895712] [2022-11-25 23:54:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:54:19,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:54:19,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:54:19,315 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:54:19,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 23:54:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:54:19,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-25 23:54:19,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:54:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:54:23,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:54:42,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:54:42,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766895712] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:54:42,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1762962267] [2022-11-25 23:54:42,638 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-11-25 23:54:42,638 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:54:42,638 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:54:42,639 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:54:42,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:54:42,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:54:42,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:54:42,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:54:42,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-25 23:54:42,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:54:42,812 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:54:42,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-25 23:55:20,025 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:57:21,835 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 476 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:57:29,328 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '438456#(and (<= |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~6#1| 127) (<= ~send3~0 127) (or (not (<= (+ ~st3~0 ~st2~0 ~st1~0) 1)) (and (not (= (+ ~st3~0 ~st2~0 ~st1~0) 1)) (not (< (mod ~r1~0 256) 3)))) (<= 0 ~id3~0) (<= (+ |ULTIMATE.start_main_~node1__m1~64#1| 1) 0) (= ~nomsg~0 ~p1_new~0) (<= 1 ~__return_103~0) (<= ~st3~0 0) (<= (+ |ULTIMATE.start_main_~node3__m3~42#1| 1) 0) (= |ULTIMATE.start_main_~assert__arg~1#1| |ULTIMATE.start_main_~__tmp_2~0#1|) (<= 0 ~mode1~0) (<= |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~12#1| 127) (<= 1 ~__return_4675~0) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~49#1| 1)) (<= 0 ~id1~0) (<= 1 ~r1~0) (<= (+ |ULTIMATE.start_main_~node2__m2~40#1| 1) 0) (<= ~__return_1524~0 1) (<= 0 ~mode3~0) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~43#1| 1)) (= ~p3_new~0 ~nomsg~0) (= (ite (= |ULTIMATE.start_main_~main__c1~0#1| 0) 0 1) |ULTIMATE.start_main_~__tmp_2~0#1|) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~20#1| 1)) (<= ~mode2~0 1) (<= 0 |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~12#1|) (<= 0 ~st1~0) (<= ~r1~0 257) (<= |ULTIMATE.start_main_~assert__arg~68#1| 1) (<= ~__return_103~0 1) (<= 0 ~st2~0) (<= ~mode3~0 1) (<= 0 |ULTIMATE.start_main_~assert__arg~66#1|) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~42#1| 1)) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~0#1| 1)) (<= 0 (+ ~p2_old~0 1)) (<= ~id1~0 127) (= ~nomsg~0 ~p2_new~0) (<= |ULTIMATE.start_main_~assert__arg~66#1| 1) (<= ~__return_4675~0 1) (<= 0 |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~6#1|) (<= (+ |ULTIMATE.start_main_~node1__m1~0#1| 1) 0) (<= (+ ~nomsg~0 1) 0) (<= (+ |ULTIMATE.start_main_~node2__m2~50#1| 1) 0) (<= ~mode1~0 1) (<= |ULTIMATE.start_main_~__tmp_67~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~64#1| 1)) (<= (+ |ULTIMATE.start_main_~node3__m3~43#1| 1) 0) (<= 1 ~__return_1524~0) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~50#1| 1)) (<= (+ |ULTIMATE.start_main_~node3__m3~20#1| 1) 0) (<= 0 |ULTIMATE.start_main_~__tmp_69~0#1|) (<= ~id3~0 127) (<= 0 ~id2~0) (<= 0 (+ ~nomsg~0 1)) (= |ULTIMATE.start_main_~check__tmp~32#1| ~__return_5137~0) (<= 0 ~__return_1394~0) (<= 0 ~__return_1374~0) (<= ~__return_1314~0 0) (<= 0 ~mode2~0) (<= 0 ~__return_1314~0) (<= ~id2~0 127) (<= 0 ~st3~0) (= (mod |ULTIMATE.start_main_~assert__arg~1#1| 256) 0) (<= |ULTIMATE.start_main_~__tmp_69~0#1| 1) (<= 0 |ULTIMATE.start_main_~assert__arg~68#1|) (<= |ULTIMATE.start_main_~init__tmp~0#1| 1) (<= (+ ~p2_old~0 1) 0) (<= ~__return_2204~0 0) (or (and (= ~__return_4327~0 0) (= ~__return_2316~0 0) (= ~__return_1880~0 0) (= ~__return_1154~0 0) (= ~__return_1414~0 0) (= ~__return_3702~0 0) (= ~__return_1384~0 0) (= ~__return_1294~0 0) (= ~__return_4869~0 0) (= ~__return_2735~0 0) (= ~__return_2647~0 0) (= ~__return_1264~0 0) (= ~__return_1534~0 0) (= ~__return_1234~0 0) (= ~__return_3142~0 0) (= ~__return_1164~0 0) (= ~__return_1334~0 0) (= ~__return_1474~0 0) (= ~__return_1364~0 0) (= ~__return_1214~0 0) (= ~__return_4759~0 0) (= |ULTIMATE.start_main_~check__tmp~69#1| 1) (= ~p2~0 0) (= ~__return_2822~0 0) (= ~__return_1584~0 0) (= ~__return_1274~0 0) (= ~__return_1544~0 0) (= ~__return_1454~0 0) (= ~__return_1504~0 0) (= ~__return_3254~0 0) (= ~__return_2117~0 0) (= ~__return_1574~0 0) (= ~__return_1174~0 0) (= ~__return_4521~0 0) (= |ULTIMATE.start_main_~check__tmp~67#1| 1) (= ~__return_1124~0 0) (= ~__return_1254~0 0) (= ~__return_1424~0 0) (= ~__return_1244~0 0) (= ~__return_1114~0 0) (= ~__return_1344~0 0) (= ~__return_1204~0 0) (= ~__return_1484~0 0) (= ~st1~0 0) (= ~__return_1354~0 0) (= ~__return_3564~0 0) (= ~__return_1184~0 0) (= ~__return_1144~0 0) (= ~__return_1554~0 0) (= ~__return_1194~0 0) (= ~__return_4411~0 0) (= ~__return_2498~0 0) (= ~__return_1324~0 0) (= ~__return_1404~0 0) (= ~__return_1968~0 0) (= ~__return_1134~0 0) (= |#NULL.offset| 0) (= ~st2~0 0) (= ~__return_2934~0 0) (= ~__return_1304~0 0) (= ~__return_1514~0 0) (= ~__return_3453~0 0) (= ~__return_1564~0 0) (= ~__return_1444~0 0) (= ~__return_1494~0 0) (= ~__return_1224~0 0) (= ~p3~0 0) (= ~__return_1284~0 0) (= ~__return_1434~0 0) (= ~p1~0 0) (= ~__return_1464~0 0) (= ~__return_main~0 0) (= ~__return_2586~0 0) (= ~__return_2029~0 0) (= |#NULL.base| 0) (= ~__return_3341~0 0) (= |ULTIMATE.start_main_~main__i2~0#1| 0)) (and (= ~__return_4327~0 0) (= ~__return_2316~0 0) (= ~__return_1880~0 0) (= ~__return_1154~0 0) (= ~__return_1414~0 0) (= ~mode2~0 0) (= ~__return_3702~0 0) (= ~__return_1384~0 0) (= ~__return_1294~0 0) (= ~__return_4869~0 0) (= ~__return_2735~0 0) (= ~__return_2647~0 0) (= ~__return_1264~0 0) (= ~__return_1534~0 0) (= ~__return_1234~0 0) (= ~__return_3142~0 0) (= ~__return_1164~0 0) (= ~__return_1334~0 0) (= ~__return_1474~0 0) (= ~__return_1364~0 0) (= ~__return_1214~0 0) (= ~__return_4759~0 0) (= |ULTIMATE.start_main_~check__tmp~69#1| 1) (= ~p2~0 0) (= ~__return_2822~0 0) (= ~__return_1584~0 0) (= ~__return_1274~0 0) (= ~__return_1544~0 0) (= ~__return_1454~0 0) (= ~__return_1504~0 0) (= ~__return_3254~0 0) (= ~__return_2117~0 0) (= ~__return_1574~0 0) (= ~__return_1174~0 0) (= ~__return_4521~0 0) (= |ULTIMATE.start_main_~check__tmp~67#1| 1) (= ~__return_1124~0 0) (= ~__return_1254~0 0) (= ~__return_1424~0 0) (= ~__return_1244~0 0) (= ~__return_1114~0 0) (= ~__return_1344~0 0) (= ~__return_1204~0 0) (= ~__return_1484~0 0) (= ~__return_1354~0 0) (= ~__return_3564~0 0) (= ~__return_1184~0 0) (= ~__return_1144~0 0) (= ~__return_1554~0 0) (= ~__return_1194~0 0) (= ~__return_4411~0 0) (= ~__return_2498~0 0) (= ~__return_1324~0 0) (= ~mode1~0 0) (= ~__return_1404~0 0) (= ~__return_1968~0 0) (= ~__return_1134~0 0) (= |#NULL.offset| 0) (= ~__return_2934~0 0) (= ~__return_1304~0 0) (= ~__return_1514~0 0) (= ~__return_3453~0 0) (= ~__return_1564~0 0) (= ~__return_1444~0 0) (= ~__return_1494~0 0) (= ~__return_1224~0 0) (= ~p3~0 0) (= ~__return_1284~0 0) (= ~__return_1434~0 0) (= ~p1~0 0) (= ~__return_1464~0 0) (= ~__return_main~0 0) (= ~__return_2586~0 0) (= ~__return_2029~0 0) (= |#NULL.base| 0) (= ~__return_3341~0 0) (= |ULTIMATE.start_main_~main__i2~0#1| 0))) (<= (+ |ULTIMATE.start_main_~node2__m2~49#1| 1) 0) (<= 0 ~send3~0) (<= ~__return_1394~0 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~__tmp_67~0#1|) (<= 0 ~__return_2204~0) (= |ULTIMATE.start_main_~main__c1~0#1| ~__return_5137~0) (<= 1 |ULTIMATE.start_main_~init__tmp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~40#1| 1)) (<= ~__return_1374~0 0))' at error location [2022-11-25 23:57:29,329 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:57:29,329 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:57:29,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24, 24] total 61 [2022-11-25 23:57:29,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713508811] [2022-11-25 23:57:29,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:57:29,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-25 23:57:29,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:57:29,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-25 23:57:29,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1716, Invalid=9840, Unknown=0, NotChecked=0, Total=11556 [2022-11-25 23:57:29,339 INFO L87 Difference]: Start difference. First operand 6367 states and 8414 transitions. Second operand has 61 states, 61 states have (on average 3.5901639344262297) internal successors, (219), 61 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:59:16,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:59:16,175 INFO L93 Difference]: Finished difference Result 27050 states and 36226 transitions. [2022-11-25 23:59:16,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2022-11-25 23:59:16,175 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.5901639344262297) internal successors, (219), 61 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-25 23:59:16,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:59:16,209 INFO L225 Difference]: With dead ends: 27050 [2022-11-25 23:59:16,210 INFO L226 Difference]: Without dead ends: 24805 [2022-11-25 23:59:16,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 118 SyntacticMatches, 15 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36532 ImplicationChecksByTransitivity, 209.0s TimeCoverageRelationStatistics Valid=8929, Invalid=73153, Unknown=0, NotChecked=0, Total=82082 [2022-11-25 23:59:16,224 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 8121 mSDsluCounter, 3972 mSDsCounter, 0 mSdLazyCounter, 8948 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8121 SdHoareTripleChecker+Valid, 4213 SdHoareTripleChecker+Invalid, 9423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 8948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:59:16,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8121 Valid, 4213 Invalid, 9423 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [475 Valid, 8948 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2022-11-25 23:59:16,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24805 states. [2022-11-25 23:59:25,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24805 to 13137. [2022-11-25 23:59:25,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13137 states, 13136 states have (on average 1.320341047503045) internal successors, (17344), 13136 states have internal predecessors, (17344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:59:25,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13137 states to 13137 states and 17344 transitions. [2022-11-25 23:59:25,245 INFO L78 Accepts]: Start accepts. Automaton has 13137 states and 17344 transitions. Word has length 74 [2022-11-25 23:59:25,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:59:25,246 INFO L495 AbstractCegarLoop]: Abstraction has 13137 states and 17344 transitions. [2022-11-25 23:59:25,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.5901639344262297) internal successors, (219), 61 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:59:25,246 INFO L276 IsEmpty]: Start isEmpty. Operand 13137 states and 17344 transitions. [2022-11-25 23:59:25,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-25 23:59:25,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:59:25,248 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:59:25,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 23:59:25,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:59:25,448 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:59:25,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:59:25,449 INFO L85 PathProgramCache]: Analyzing trace with hash -674950543, now seen corresponding path program 1 times [2022-11-25 23:59:25,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:59:25,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164739900] [2022-11-25 23:59:25,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:59:25,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:59:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:59:25,505 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 23:59:25,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:59:25,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164739900] [2022-11-25 23:59:25,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164739900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:59:25,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:59:25,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:59:25,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948179994] [2022-11-25 23:59:25,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:59:25,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:59:25,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:59:25,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:59:25,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:59:25,508 INFO L87 Difference]: Start difference. First operand 13137 states and 17344 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:59:33,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:59:33,862 INFO L93 Difference]: Finished difference Result 15984 states and 21080 transitions. [2022-11-25 23:59:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:59:33,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 75 [2022-11-25 23:59:33,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:59:33,880 INFO L225 Difference]: With dead ends: 15984 [2022-11-25 23:59:33,881 INFO L226 Difference]: Without dead ends: 11779 [2022-11-25 23:59:33,886 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 [2022-11-25 23:59:33,887 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 149 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:59:33,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 735 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:59:33,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11779 states. [2022-11-25 23:59:42,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11779 to 11717. [2022-11-25 23:59:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11717 states, 11716 states have (on average 1.3071867531580745) internal successors, (15315), 11716 states have internal predecessors, (15315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:59:42,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11717 states to 11717 states and 15315 transitions. [2022-11-25 23:59:42,276 INFO L78 Accepts]: Start accepts. Automaton has 11717 states and 15315 transitions. Word has length 75 [2022-11-25 23:59:42,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:59:42,276 INFO L495 AbstractCegarLoop]: Abstraction has 11717 states and 15315 transitions. [2022-11-25 23:59:42,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:59:42,276 INFO L276 IsEmpty]: Start isEmpty. Operand 11717 states and 15315 transitions. [2022-11-25 23:59:42,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-25 23:59:42,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:59:42,278 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:59:42,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-25 23:59:42,278 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-25 23:59:42,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:59:42,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1783645467, now seen corresponding path program 1 times [2022-11-25 23:59:42,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:59:42,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474589583] [2022-11-25 23:59:42,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:59:42,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:59:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:59:43,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:59:43,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:59:43,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474589583] [2022-11-25 23:59:43,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474589583] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:59:43,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892979657] [2022-11-25 23:59:43,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:59:43,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:59:43,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:59:43,389 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:59:43,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 23:59:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:59:43,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-25 23:59:43,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:59:46,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:59:46,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:00:07,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:00:07,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892979657] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:00:07,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1179321372] [2022-11-26 00:00:07,381 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-26 00:00:07,382 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:00:07,382 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:00:07,382 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:00:07,383 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:00:07,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:00:07,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:00:07,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:00:07,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-26 00:00:07,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:00:07,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:00:07,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-26 00:00:09,712 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:00:59,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1179321372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:00:59,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:00:59,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [17, 22, 24] total 87 [2022-11-26 00:00:59,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428374946] [2022-11-26 00:00:59,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:00:59,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-26 00:00:59,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:00:59,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-26 00:00:59,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1243, Invalid=6239, Unknown=0, NotChecked=0, Total=7482 [2022-11-26 00:00:59,638 INFO L87 Difference]: Start difference. First operand 11717 states and 15315 transitions. Second operand has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:01:27,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:01:27,293 INFO L93 Difference]: Finished difference Result 13561 states and 17711 transitions. [2022-11-26 00:01:27,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-26 00:01:27,293 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 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 75 [2022-11-26 00:01:27,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:01:27,306 INFO L225 Difference]: With dead ends: 13561 [2022-11-26 00:01:27,306 INFO L226 Difference]: Without dead ends: 11695 [2022-11-26 00:01:27,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 155 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3638 ImplicationChecksByTransitivity, 54.2s TimeCoverageRelationStatistics Valid=1243, Invalid=6239, Unknown=0, NotChecked=0, Total=7482 [2022-11-26 00:01:27,311 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 5 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 5383 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 5383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:01:27,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 629 Invalid, 5383 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 5383 Invalid, 0 Unknown, 0 Unchecked, 19.7s Time] [2022-11-26 00:01:27,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11695 states. [2022-11-26 00:01:35,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11695 to 11695. [2022-11-26 00:01:35,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11695 states, 11694 states have (on average 1.3074226098854114) internal successors, (15289), 11694 states have internal predecessors, (15289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:01:35,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11695 states to 11695 states and 15289 transitions. [2022-11-26 00:01:35,745 INFO L78 Accepts]: Start accepts. Automaton has 11695 states and 15289 transitions. Word has length 75 [2022-11-26 00:01:35,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:01:35,745 INFO L495 AbstractCegarLoop]: Abstraction has 11695 states and 15289 transitions. [2022-11-26 00:01:35,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:01:35,745 INFO L276 IsEmpty]: Start isEmpty. Operand 11695 states and 15289 transitions. [2022-11-26 00:01:35,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-26 00:01:35,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:01:35,747 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:01:35,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-26 00:01:35,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-26 00:01:35,948 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-26 00:01:35,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:01:35,948 INFO L85 PathProgramCache]: Analyzing trace with hash 809188446, now seen corresponding path program 1 times [2022-11-26 00:01:35,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:01:35,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336365157] [2022-11-26 00:01:35,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:35,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:01:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-26 00:01:36,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:01:36,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336365157] [2022-11-26 00:01:36,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336365157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:01:36,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:01:36,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:01:36,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365059263] [2022-11-26 00:01:36,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:01:36,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:01:36,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:01:36,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:01:36,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:01:36,292 INFO L87 Difference]: Start difference. First operand 11695 states and 15289 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:01:51,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:01:51,645 INFO L93 Difference]: Finished difference Result 19026 states and 24347 transitions. [2022-11-26 00:01:51,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-26 00:01:51,646 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 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 76 [2022-11-26 00:01:51,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:01:51,666 INFO L225 Difference]: With dead ends: 19026 [2022-11-26 00:01:51,666 INFO L226 Difference]: Without dead ends: 17281 [2022-11-26 00:01:51,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2022-11-26 00:01:51,670 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 1007 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:01:51,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 1797 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1962 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-26 00:01:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17281 states. [2022-11-26 00:01:59,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17281 to 11698. [2022-11-26 00:01:59,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11698 states, 11697 states have (on average 1.307343763358126) internal successors, (15292), 11697 states have internal predecessors, (15292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:01:59,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11698 states to 11698 states and 15292 transitions. [2022-11-26 00:01:59,966 INFO L78 Accepts]: Start accepts. Automaton has 11698 states and 15292 transitions. Word has length 76 [2022-11-26 00:01:59,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:01:59,966 INFO L495 AbstractCegarLoop]: Abstraction has 11698 states and 15292 transitions. [2022-11-26 00:01:59,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:01:59,966 INFO L276 IsEmpty]: Start isEmpty. Operand 11698 states and 15292 transitions. [2022-11-26 00:01:59,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-26 00:01:59,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:01:59,969 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:01:59,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-26 00:01:59,970 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-26 00:01:59,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:01:59,970 INFO L85 PathProgramCache]: Analyzing trace with hash -863758381, now seen corresponding path program 1 times [2022-11-26 00:01:59,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:01:59,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364753194] [2022-11-26 00:01:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:59,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:02:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:02:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:02:00,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:02:00,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364753194] [2022-11-26 00:02:00,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364753194] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:02:00,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461116543] [2022-11-26 00:02:00,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:02:00,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:02:00,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:02:00,888 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:02:00,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d92e824f-d4d9-4076-af13-e5f29b9c6d22/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-26 00:02:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:02:01,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-26 00:02:01,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:02:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:02:06,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:02:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:02:23,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461116543] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:02:23,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2071746160] [2022-11-26 00:02:23,613 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2022-11-26 00:02:23,613 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:02:23,613 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:02:23,614 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:02:23,614 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:02:23,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:02:23,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:02:23,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:02:23,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-26 00:02:23,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:02:23,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:02:23,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16