./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966bd944-0e41-4598-97f9-1d7d9a30f1c0/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966bd944-0e41-4598-97f9-1d7d9a30f1c0/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966bd944-0e41-4598-97f9-1d7d9a30f1c0/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966bd944-0e41-4598-97f9-1d7d9a30f1c0/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966bd944-0e41-4598-97f9-1d7d9a30f1c0/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966bd944-0e41-4598-97f9-1d7d9a30f1c0/bin/utaipan-eEHZpOm5b7 --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 755ab1a46ae9bd419f57fa80d8e9c25878a5804529700435e5fe8941ed66455d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:07:41,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:07:41,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:07:41,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:07:41,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:07:41,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:07:41,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:07:41,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:07:41,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:07:41,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:07:41,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:07:41,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:07:41,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:07:41,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:07:41,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:07:41,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:07:41,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:07:41,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:07:41,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:07:41,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:07:41,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:07:41,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:07:41,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:07:41,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:07:41,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:07:41,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:07:41,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:07:41,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:07:41,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:07:41,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:07:41,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:07:41,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:07:41,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:07:41,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:07:41,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:07:41,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:07:41,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:07:41,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:07:41,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:07:41,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:07:41,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:07:41,128 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966bd944-0e41-4598-97f9-1d7d9a30f1c0/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 20:07:41,176 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:07:41,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:07:41,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:07:41,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:07:41,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:07:41,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:07:41,185 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:07:41,185 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:07:41,186 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:07:41,186 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:07:41,187 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:07:41,187 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:07:41,188 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:07:41,188 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:07:41,188 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:07:41,188 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:07:41,188 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:07:41,188 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:07:41,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:07:41,189 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:07:41,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:07:41,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:07:41,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:07:41,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:07:41,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:07:41,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:07:41,192 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:07:41,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:07:41,194 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:07:41,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:07:41,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:07:41,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:07:41,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:07:41,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:07:41,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:07:41,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:07:41,196 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:07:41,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:07:41,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:07:41,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:07:41,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:07:41,197 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_966bd944-0e41-4598-97f9-1d7d9a30f1c0/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966bd944-0e41-4598-97f9-1d7d9a30f1c0/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 755ab1a46ae9bd419f57fa80d8e9c25878a5804529700435e5fe8941ed66455d [2021-11-25 20:07:41,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:07:41,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:07:41,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:07:41,478 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:07:41,480 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:07:41,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966bd944-0e41-4598-97f9-1d7d9a30f1c0/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-25 20:07:41,546 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966bd944-0e41-4598-97f9-1d7d9a30f1c0/bin/utaipan-eEHZpOm5b7/data/5c49b59fd/08c1bb91c0b74be0ade493f41afb2970/FLAGe259a63f3 [2021-11-25 20:07:42,292 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:07:42,293 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966bd944-0e41-4598-97f9-1d7d9a30f1c0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-25 20:07:42,357 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966bd944-0e41-4598-97f9-1d7d9a30f1c0/bin/utaipan-eEHZpOm5b7/data/5c49b59fd/08c1bb91c0b74be0ade493f41afb2970/FLAGe259a63f3 [2021-11-25 20:07:42,855 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966bd944-0e41-4598-97f9-1d7d9a30f1c0/bin/utaipan-eEHZpOm5b7/data/5c49b59fd/08c1bb91c0b74be0ade493f41afb2970 [2021-11-25 20:07:42,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:07:42,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:07:42,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:07:42,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:07:42,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:07:42,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:07:42" (1/1) ... [2021-11-25 20:07:42,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@642e6a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:42, skipping insertion in model container [2021-11-25 20:07:42,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:07:42" (1/1) ... [2021-11-25 20:07:42,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:07:43,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:07:43,502 WARN L230 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_966bd944-0e41-4598-97f9-1d7d9a30f1c0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[14256,14269] [2021-11-25 20:07:43,547 WARN L230 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_966bd944-0e41-4598-97f9-1d7d9a30f1c0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20101,20114] [2021-11-25 20:07:43,573 WARN L230 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_966bd944-0e41-4598-97f9-1d7d9a30f1c0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[21333,21346] [2021-11-25 20:07:43,593 WARN L230 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_966bd944-0e41-4598-97f9-1d7d9a30f1c0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23565,23578] [2021-11-25 20:07:43,616 WARN L230 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_966bd944-0e41-4598-97f9-1d7d9a30f1c0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[26974,26987] [2021-11-25 20:07:43,671 WARN L230 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_966bd944-0e41-4598-97f9-1d7d9a30f1c0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[33563,33576] [2021-11-25 20:07:44,399 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:07:44,421 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:07:44,510 WARN L230 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_966bd944-0e41-4598-97f9-1d7d9a30f1c0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[14256,14269] [2021-11-25 20:07:44,529 WARN L230 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_966bd944-0e41-4598-97f9-1d7d9a30f1c0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20101,20114] [2021-11-25 20:07:44,535 WARN L230 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_966bd944-0e41-4598-97f9-1d7d9a30f1c0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[21333,21346] [2021-11-25 20:07:44,545 WARN L230 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_966bd944-0e41-4598-97f9-1d7d9a30f1c0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23565,23578] [2021-11-25 20:07:44,557 WARN L230 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_966bd944-0e41-4598-97f9-1d7d9a30f1c0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[26974,26987] [2021-11-25 20:07:44,579 WARN L230 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_966bd944-0e41-4598-97f9-1d7d9a30f1c0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[33563,33576] [2021-11-25 20:07:45,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:07:45,125 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:07:45,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:45 WrapperNode [2021-11-25 20:07:45,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:07:45,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:07:45,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:07:45,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:07:45,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:45" (1/1) ... [2021-11-25 20:07:45,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:45" (1/1) ... [2021-11-25 20:07:45,394 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 9273 [2021-11-25 20:07:45,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:07:45,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:07:45,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:07:45,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:07:45,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:45" (1/1) ... [2021-11-25 20:07:45,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:45" (1/1) ... [2021-11-25 20:07:45,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:45" (1/1) ... [2021-11-25 20:07:45,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:45" (1/1) ... [2021-11-25 20:07:45,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:45" (1/1) ... [2021-11-25 20:07:45,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:45" (1/1) ... [2021-11-25 20:07:45,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:45" (1/1) ... [2021-11-25 20:07:45,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:07:45,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:07:45,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:07:45,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:07:45,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:45" (1/1) ... [2021-11-25 20:07:45,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:07:45,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966bd944-0e41-4598-97f9-1d7d9a30f1c0/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:07:45,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966bd944-0e41-4598-97f9-1d7d9a30f1c0/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:07:45,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_966bd944-0e41-4598-97f9-1d7d9a30f1c0/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:07:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:07:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:07:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:07:45,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:07:46,218 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:07:46,220 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:07:49,912 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:07:50,420 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:07:50,420 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 20:07:50,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:07:50 BoogieIcfgContainer [2021-11-25 20:07:50,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:07:50,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:07:50,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:07:50,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:07:50,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:07:42" (1/3) ... [2021-11-25 20:07:50,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c916ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:07:50, skipping insertion in model container [2021-11-25 20:07:50,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:07:45" (2/3) ... [2021-11-25 20:07:50,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c916ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:07:50, skipping insertion in model container [2021-11-25 20:07:50,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:07:50" (3/3) ... [2021-11-25 20:07:50,439 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-11-25 20:07:50,449 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:07:50,449 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-25 20:07:50,517 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:07:50,526 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:07:50,526 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-25 20:07:50,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 1704 states, 1697 states have (on average 1.8002357100766058) internal successors, (3055), 1703 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:50,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-25 20:07:50,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:50,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:07:50,627 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:07:50,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:50,633 INFO L85 PathProgramCache]: Analyzing trace with hash -172755925, now seen corresponding path program 1 times [2021-11-25 20:07:50,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:50,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979521418] [2021-11-25 20:07:50,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:50,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:51,173 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:51,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979521418] [2021-11-25 20:07:51,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979521418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:51,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:51,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:07:51,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765770861] [2021-11-25 20:07:51,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:51,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:07:51,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:51,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:07:51,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:07:51,220 INFO L87 Difference]: Start difference. First operand has 1704 states, 1697 states have (on average 1.8002357100766058) internal successors, (3055), 1703 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:51,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:51,658 INFO L93 Difference]: Finished difference Result 2389 states and 4199 transitions. [2021-11-25 20:07:51,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:07:51,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 [2021-11-25 20:07:51,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:51,695 INFO L225 Difference]: With dead ends: 2389 [2021-11-25 20:07:51,695 INFO L226 Difference]: Without dead ends: 2233 [2021-11-25 20:07:51,708 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:07:51,714 INFO L933 BasicCegarLoop]: 3529 mSDtfsCounter, 1817 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 5452 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:51,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1817 Valid, 5452 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:07:51,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2021-11-25 20:07:51,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2223. [2021-11-25 20:07:51,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 2217 states have (on average 1.2877762742444745) internal successors, (2855), 2222 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:51,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 2855 transitions. [2021-11-25 20:07:51,861 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 2855 transitions. Word has length 75 [2021-11-25 20:07:51,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:51,862 INFO L470 AbstractCegarLoop]: Abstraction has 2223 states and 2855 transitions. [2021-11-25 20:07:51,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:51,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 2855 transitions. [2021-11-25 20:07:51,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-25 20:07:51,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:51,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:07:51,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:07:51,870 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:07:51,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:51,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1644069307, now seen corresponding path program 1 times [2021-11-25 20:07:51,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:51,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361138308] [2021-11-25 20:07:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:51,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:52,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:52,043 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:52,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361138308] [2021-11-25 20:07:52,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361138308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:52,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:52,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:07:52,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856990257] [2021-11-25 20:07:52,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:52,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:07:52,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:52,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:07:52,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:07:52,046 INFO L87 Difference]: Start difference. First operand 2223 states and 2855 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:52,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:52,316 INFO L93 Difference]: Finished difference Result 2998 states and 3955 transitions. [2021-11-25 20:07:52,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:07:52,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 [2021-11-25 20:07:52,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:52,335 INFO L225 Difference]: With dead ends: 2998 [2021-11-25 20:07:52,335 INFO L226 Difference]: Without dead ends: 2621 [2021-11-25 20:07:52,339 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:07:52,341 INFO L933 BasicCegarLoop]: 2232 mSDtfsCounter, 1128 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:52,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 3562 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:07:52,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2021-11-25 20:07:52,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 2611. [2021-11-25 20:07:52,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2605 states have (on average 1.307101727447217) internal successors, (3405), 2610 states have internal predecessors, (3405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:52,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3405 transitions. [2021-11-25 20:07:52,460 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3405 transitions. Word has length 75 [2021-11-25 20:07:52,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:52,464 INFO L470 AbstractCegarLoop]: Abstraction has 2611 states and 3405 transitions. [2021-11-25 20:07:52,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:52,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3405 transitions. [2021-11-25 20:07:52,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-25 20:07:52,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:52,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:07:52,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:07:52,472 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:07:52,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:52,473 INFO L85 PathProgramCache]: Analyzing trace with hash 281280943, now seen corresponding path program 1 times [2021-11-25 20:07:52,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:52,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239070048] [2021-11-25 20:07:52,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:52,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:52,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:52,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:52,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239070048] [2021-11-25 20:07:52,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239070048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:52,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:52,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:07:52,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150207442] [2021-11-25 20:07:52,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:52,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:07:52,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:52,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:07:52,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:07:52,646 INFO L87 Difference]: Start difference. First operand 2611 states and 3405 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:53,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:53,744 INFO L93 Difference]: Finished difference Result 4650 states and 6214 transitions. [2021-11-25 20:07:53,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:07:53,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 [2021-11-25 20:07:53,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:53,761 INFO L225 Difference]: With dead ends: 4650 [2021-11-25 20:07:53,761 INFO L226 Difference]: Without dead ends: 2641 [2021-11-25 20:07:53,764 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:07:53,767 INFO L933 BasicCegarLoop]: 948 mSDtfsCounter, 5346 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5346 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:53,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5346 Valid, 1124 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 20:07:53,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2021-11-25 20:07:53,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 2631. [2021-11-25 20:07:53,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2625 states have (on average 1.3455238095238096) internal successors, (3532), 2630 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:53,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 3532 transitions. [2021-11-25 20:07:53,923 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 3532 transitions. Word has length 75 [2021-11-25 20:07:53,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:53,923 INFO L470 AbstractCegarLoop]: Abstraction has 2631 states and 3532 transitions. [2021-11-25 20:07:53,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:53,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 3532 transitions. [2021-11-25 20:07:53,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 20:07:53,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:53,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:07:53,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:07:53,931 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:07:53,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:53,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1643166464, now seen corresponding path program 1 times [2021-11-25 20:07:53,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:53,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176548732] [2021-11-25 20:07:53,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:53,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:54,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:54,042 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:54,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176548732] [2021-11-25 20:07:54,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176548732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:54,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:54,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:07:54,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050192365] [2021-11-25 20:07:54,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:54,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:07:54,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:54,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:07:54,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:07:54,045 INFO L87 Difference]: Start difference. First operand 2631 states and 3532 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:55,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:55,029 INFO L93 Difference]: Finished difference Result 5389 states and 7377 transitions. [2021-11-25 20:07:55,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:07:55,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 [2021-11-25 20:07:55,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:55,048 INFO L225 Difference]: With dead ends: 5389 [2021-11-25 20:07:55,048 INFO L226 Difference]: Without dead ends: 3200 [2021-11-25 20:07:55,051 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:07:55,052 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 4200 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4200 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:55,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4200 Valid, 892 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:07:55,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2021-11-25 20:07:55,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 3190. [2021-11-25 20:07:55,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3190 states, 3184 states have (on average 1.3693467336683418) internal successors, (4360), 3189 states have internal predecessors, (4360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:55,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 4360 transitions. [2021-11-25 20:07:55,216 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 4360 transitions. Word has length 76 [2021-11-25 20:07:55,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:55,216 INFO L470 AbstractCegarLoop]: Abstraction has 3190 states and 4360 transitions. [2021-11-25 20:07:55,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:55,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 4360 transitions. [2021-11-25 20:07:55,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-25 20:07:55,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:55,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:07:55,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:07:55,223 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:07:55,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:55,224 INFO L85 PathProgramCache]: Analyzing trace with hash -867968266, now seen corresponding path program 1 times [2021-11-25 20:07:55,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:55,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387929673] [2021-11-25 20:07:55,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:55,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:55,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:55,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387929673] [2021-11-25 20:07:55,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387929673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:55,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:55,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:07:55,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980287284] [2021-11-25 20:07:55,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:55,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:07:55,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:55,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:07:55,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:07:55,303 INFO L87 Difference]: Start difference. First operand 3190 states and 4360 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:55,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:55,599 INFO L93 Difference]: Finished difference Result 6732 states and 9309 transitions. [2021-11-25 20:07:55,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:07:55,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-25 20:07:55,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:55,626 INFO L225 Difference]: With dead ends: 6732 [2021-11-25 20:07:55,627 INFO L226 Difference]: Without dead ends: 4959 [2021-11-25 20:07:55,630 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:07:55,631 INFO L933 BasicCegarLoop]: 1650 mSDtfsCounter, 1039 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:55,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 2498 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:07:55,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4959 states. [2021-11-25 20:07:55,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4959 to 4949. [2021-11-25 20:07:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4949 states, 4943 states have (on average 1.3667813068986445) internal successors, (6756), 4948 states have internal predecessors, (6756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:55,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4949 states to 4949 states and 6756 transitions. [2021-11-25 20:07:55,957 INFO L78 Accepts]: Start accepts. Automaton has 4949 states and 6756 transitions. Word has length 77 [2021-11-25 20:07:55,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:55,957 INFO L470 AbstractCegarLoop]: Abstraction has 4949 states and 6756 transitions. [2021-11-25 20:07:55,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:55,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4949 states and 6756 transitions. [2021-11-25 20:07:55,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-25 20:07:55,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:55,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:07:55,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:07:55,967 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:07:55,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:55,967 INFO L85 PathProgramCache]: Analyzing trace with hash 532148261, now seen corresponding path program 1 times [2021-11-25 20:07:55,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:55,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503680640] [2021-11-25 20:07:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:55,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:56,036 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:56,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503680640] [2021-11-25 20:07:56,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503680640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:56,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:56,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:07:56,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099995673] [2021-11-25 20:07:56,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:56,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:07:56,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:56,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:07:56,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:07:56,038 INFO L87 Difference]: Start difference. First operand 4949 states and 6756 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:56,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:56,437 INFO L93 Difference]: Finished difference Result 10728 states and 14799 transitions. [2021-11-25 20:07:56,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:07:56,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-25 20:07:56,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:56,526 INFO L225 Difference]: With dead ends: 10728 [2021-11-25 20:07:56,526 INFO L226 Difference]: Without dead ends: 7737 [2021-11-25 20:07:56,531 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:07:56,532 INFO L933 BasicCegarLoop]: 1672 mSDtfsCounter, 1059 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:56,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1059 Valid, 2516 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:07:56,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7737 states. [2021-11-25 20:07:56,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7737 to 7727. [2021-11-25 20:07:56,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7727 states, 7721 states have (on average 1.3636834606916202) internal successors, (10529), 7726 states have internal predecessors, (10529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:56,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7727 states to 7727 states and 10529 transitions. [2021-11-25 20:07:56,982 INFO L78 Accepts]: Start accepts. Automaton has 7727 states and 10529 transitions. Word has length 77 [2021-11-25 20:07:56,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:56,982 INFO L470 AbstractCegarLoop]: Abstraction has 7727 states and 10529 transitions. [2021-11-25 20:07:56,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:56,983 INFO L276 IsEmpty]: Start isEmpty. Operand 7727 states and 10529 transitions. [2021-11-25 20:07:56,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-25 20:07:56,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:56,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:07:56,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:07:56,994 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:07:56,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:56,995 INFO L85 PathProgramCache]: Analyzing trace with hash 413664227, now seen corresponding path program 1 times [2021-11-25 20:07:56,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:56,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095284297] [2021-11-25 20:07:56,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:56,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:57,061 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:57,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095284297] [2021-11-25 20:07:57,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095284297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:57,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:57,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:07:57,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478272448] [2021-11-25 20:07:57,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:57,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:07:57,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:57,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:07:57,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:07:57,064 INFO L87 Difference]: Start difference. First operand 7727 states and 10529 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:57,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:07:57,795 INFO L93 Difference]: Finished difference Result 18134 states and 25082 transitions. [2021-11-25 20:07:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:07:57,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-25 20:07:57,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:07:57,842 INFO L225 Difference]: With dead ends: 18134 [2021-11-25 20:07:57,842 INFO L226 Difference]: Without dead ends: 12191 [2021-11-25 20:07:57,854 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:07:57,855 INFO L933 BasicCegarLoop]: 1281 mSDtfsCounter, 664 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:07:57,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 2136 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:07:57,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12191 states. [2021-11-25 20:07:58,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12191 to 12181. [2021-11-25 20:07:58,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12181 states, 12175 states have (on average 1.3685420944558522) internal successors, (16662), 12180 states have internal predecessors, (16662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:58,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12181 states to 12181 states and 16662 transitions. [2021-11-25 20:07:58,596 INFO L78 Accepts]: Start accepts. Automaton has 12181 states and 16662 transitions. Word has length 77 [2021-11-25 20:07:58,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:07:58,597 INFO L470 AbstractCegarLoop]: Abstraction has 12181 states and 16662 transitions. [2021-11-25 20:07:58,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:07:58,597 INFO L276 IsEmpty]: Start isEmpty. Operand 12181 states and 16662 transitions. [2021-11-25 20:07:58,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-25 20:07:58,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:07:58,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:07:58,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:07:58,611 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:07:58,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:07:58,611 INFO L85 PathProgramCache]: Analyzing trace with hash 354976211, now seen corresponding path program 1 times [2021-11-25 20:07:58,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:07:58,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823071932] [2021-11-25 20:07:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:07:58,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:07:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:07:58,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:07:58,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:07:58,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823071932] [2021-11-25 20:07:58,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823071932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:07:58,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:07:58,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:07:58,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529842234] [2021-11-25 20:07:58,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:07:58,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:07:58,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:07:58,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:07:58,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:07:58,707 INFO L87 Difference]: Start difference. First operand 12181 states and 16662 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:00,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:08:00,427 INFO L93 Difference]: Finished difference Result 30002 states and 41316 transitions. [2021-11-25 20:08:00,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:08:00,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-25 20:08:00,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:08:00,479 INFO L225 Difference]: With dead ends: 30002 [2021-11-25 20:08:00,480 INFO L226 Difference]: Without dead ends: 18787 [2021-11-25 20:08:00,498 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:08:00,499 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 3600 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3600 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:08:00,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3600 Valid, 757 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:08:00,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18787 states. [2021-11-25 20:08:01,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18787 to 18777. [2021-11-25 20:08:01,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18777 states, 18771 states have (on average 1.3683341324383358) internal successors, (25685), 18776 states have internal predecessors, (25685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:01,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18777 states to 18777 states and 25685 transitions. [2021-11-25 20:08:01,812 INFO L78 Accepts]: Start accepts. Automaton has 18777 states and 25685 transitions. Word has length 77 [2021-11-25 20:08:01,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:08:01,812 INFO L470 AbstractCegarLoop]: Abstraction has 18777 states and 25685 transitions. [2021-11-25 20:08:01,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:01,813 INFO L276 IsEmpty]: Start isEmpty. Operand 18777 states and 25685 transitions. [2021-11-25 20:08:01,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 20:08:01,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:08:01,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:08:01,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:08:01,827 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:08:01,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:08:01,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2035237967, now seen corresponding path program 1 times [2021-11-25 20:08:01,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:08:01,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700960030] [2021-11-25 20:08:01,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:08:01,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:08:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:08:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:08:01,942 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:08:01,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700960030] [2021-11-25 20:08:01,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700960030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:08:01,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:08:01,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:08:01,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299298311] [2021-11-25 20:08:01,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:08:01,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:08:01,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:08:01,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:08:01,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:08:01,946 INFO L87 Difference]: Start difference. First operand 18777 states and 25685 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:07,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:08:07,068 INFO L93 Difference]: Finished difference Result 80093 states and 110675 transitions. [2021-11-25 20:08:07,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 20:08:07,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-25 20:08:07,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:08:07,250 INFO L225 Difference]: With dead ends: 80093 [2021-11-25 20:08:07,251 INFO L226 Difference]: Without dead ends: 73478 [2021-11-25 20:08:07,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:08:07,288 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 6306 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6306 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:08:07,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6306 Valid, 1582 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 20:08:07,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73478 states. [2021-11-25 20:08:08,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73478 to 18825. [2021-11-25 20:08:08,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18825 states, 18819 states have (on average 1.3682448589191774) internal successors, (25749), 18824 states have internal predecessors, (25749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:08,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18825 states to 18825 states and 25749 transitions. [2021-11-25 20:08:08,757 INFO L78 Accepts]: Start accepts. Automaton has 18825 states and 25749 transitions. Word has length 78 [2021-11-25 20:08:08,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:08:08,758 INFO L470 AbstractCegarLoop]: Abstraction has 18825 states and 25749 transitions. [2021-11-25 20:08:08,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:08,758 INFO L276 IsEmpty]: Start isEmpty. Operand 18825 states and 25749 transitions. [2021-11-25 20:08:08,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 20:08:08,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:08:08,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:08:08,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:08:08,773 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:08:08,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:08:08,773 INFO L85 PathProgramCache]: Analyzing trace with hash 139680224, now seen corresponding path program 1 times [2021-11-25 20:08:08,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:08:08,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567471013] [2021-11-25 20:08:08,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:08:08,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:08:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:08:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:08:08,933 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:08:08,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567471013] [2021-11-25 20:08:08,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567471013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:08:08,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:08:08,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:08:08,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887414673] [2021-11-25 20:08:08,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:08:08,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:08:08,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:08:08,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:08:08,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:08:08,935 INFO L87 Difference]: Start difference. First operand 18825 states and 25749 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:16,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:08:16,286 INFO L93 Difference]: Finished difference Result 83478 states and 114969 transitions. [2021-11-25 20:08:16,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 20:08:16,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-25 20:08:16,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:08:16,442 INFO L225 Difference]: With dead ends: 83478 [2021-11-25 20:08:16,443 INFO L226 Difference]: Without dead ends: 76594 [2021-11-25 20:08:16,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:08:16,471 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 5832 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5832 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:08:16,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5832 Valid, 1563 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-25 20:08:16,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76594 states. [2021-11-25 20:08:18,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76594 to 19005. [2021-11-25 20:08:18,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19005 states, 18999 states have (on average 1.3679141007421443) internal successors, (25989), 19004 states have internal predecessors, (25989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:18,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19005 states to 19005 states and 25989 transitions. [2021-11-25 20:08:18,790 INFO L78 Accepts]: Start accepts. Automaton has 19005 states and 25989 transitions. Word has length 78 [2021-11-25 20:08:18,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:08:18,790 INFO L470 AbstractCegarLoop]: Abstraction has 19005 states and 25989 transitions. [2021-11-25 20:08:18,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:18,791 INFO L276 IsEmpty]: Start isEmpty. Operand 19005 states and 25989 transitions. [2021-11-25 20:08:18,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-25 20:08:18,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:08:18,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:08:18,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:08:18,814 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:08:18,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:08:18,815 INFO L85 PathProgramCache]: Analyzing trace with hash 368267107, now seen corresponding path program 1 times [2021-11-25 20:08:18,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:08:18,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645330473] [2021-11-25 20:08:18,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:08:18,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:08:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:08:18,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:08:18,913 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:08:18,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645330473] [2021-11-25 20:08:18,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645330473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:08:18,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:08:18,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:08:18,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567817351] [2021-11-25 20:08:18,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:08:18,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:08:18,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:08:18,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:08:18,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:08:18,916 INFO L87 Difference]: Start difference. First operand 19005 states and 25989 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:27,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:08:27,367 INFO L93 Difference]: Finished difference Result 76708 states and 105343 transitions. [2021-11-25 20:08:27,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 20:08:27,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-25 20:08:27,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:08:27,492 INFO L225 Difference]: With dead ends: 76708 [2021-11-25 20:08:27,492 INFO L226 Difference]: Without dead ends: 70118 [2021-11-25 20:08:27,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:08:27,514 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 5535 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5535 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:08:27,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5535 Valid, 1546 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 20:08:27,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70118 states. [2021-11-25 20:08:29,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70118 to 19305. [2021-11-25 20:08:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19305 states, 19299 states have (on average 1.3675838126327788) internal successors, (26393), 19304 states have internal predecessors, (26393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:29,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19305 states to 19305 states and 26393 transitions. [2021-11-25 20:08:29,714 INFO L78 Accepts]: Start accepts. Automaton has 19305 states and 26393 transitions. Word has length 78 [2021-11-25 20:08:29,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:08:29,715 INFO L470 AbstractCegarLoop]: Abstraction has 19305 states and 26393 transitions. [2021-11-25 20:08:29,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:29,715 INFO L276 IsEmpty]: Start isEmpty. Operand 19305 states and 26393 transitions. [2021-11-25 20:08:29,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-25 20:08:29,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:08:29,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:08:29,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:08:29,730 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:08:29,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:08:29,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1196772921, now seen corresponding path program 1 times [2021-11-25 20:08:29,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:08:29,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404931571] [2021-11-25 20:08:29,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:08:29,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:08:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:08:29,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:08:29,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:08:29,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404931571] [2021-11-25 20:08:29,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404931571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:08:29,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:08:29,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:08:29,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141519627] [2021-11-25 20:08:29,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:08:29,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:08:29,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:08:29,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:08:29,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:08:29,806 INFO L87 Difference]: Start difference. First operand 19305 states and 26393 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:34,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:08:34,239 INFO L93 Difference]: Finished difference Result 51404 states and 70566 transitions. [2021-11-25 20:08:34,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:08:34,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-25 20:08:34,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:08:34,281 INFO L225 Difference]: With dead ends: 51404 [2021-11-25 20:08:34,282 INFO L226 Difference]: Without dead ends: 32970 [2021-11-25 20:08:34,305 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:08:34,306 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 3684 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3684 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:08:34,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3684 Valid, 839 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:08:34,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32970 states. [2021-11-25 20:08:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32970 to 25577. [2021-11-25 20:08:37,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25577 states, 25571 states have (on average 1.3699894411638185) internal successors, (35032), 25576 states have internal predecessors, (35032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:37,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25577 states to 25577 states and 35032 transitions. [2021-11-25 20:08:37,105 INFO L78 Accepts]: Start accepts. Automaton has 25577 states and 35032 transitions. Word has length 79 [2021-11-25 20:08:37,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:08:37,105 INFO L470 AbstractCegarLoop]: Abstraction has 25577 states and 35032 transitions. [2021-11-25 20:08:37,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:37,105 INFO L276 IsEmpty]: Start isEmpty. Operand 25577 states and 35032 transitions. [2021-11-25 20:08:37,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-25 20:08:37,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:08:37,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:08:37,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 20:08:37,120 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:08:37,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:08:37,120 INFO L85 PathProgramCache]: Analyzing trace with hash 404807133, now seen corresponding path program 1 times [2021-11-25 20:08:37,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:08:37,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59447804] [2021-11-25 20:08:37,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:08:37,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:08:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:08:37,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:08:37,224 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:08:37,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59447804] [2021-11-25 20:08:37,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59447804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:08:37,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:08:37,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:08:37,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983788190] [2021-11-25 20:08:37,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:08:37,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:08:37,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:08:37,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:08:37,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:08:37,226 INFO L87 Difference]: Start difference. First operand 25577 states and 35032 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:42,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:08:42,771 INFO L93 Difference]: Finished difference Result 43883 states and 60313 transitions. [2021-11-25 20:08:42,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:08:42,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-25 20:08:42,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:08:42,827 INFO L225 Difference]: With dead ends: 43883 [2021-11-25 20:08:42,827 INFO L226 Difference]: Without dead ends: 43881 [2021-11-25 20:08:42,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:08:42,835 INFO L933 BasicCegarLoop]: 1176 mSDtfsCounter, 102 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 3378 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:08:42,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 3378 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:08:42,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43881 states. [2021-11-25 20:08:45,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43881 to 25575. [2021-11-25 20:08:46,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25575 states, 25570 states have (on average 1.3685960109503323) internal successors, (34995), 25574 states have internal predecessors, (34995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:46,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25575 states to 25575 states and 34995 transitions. [2021-11-25 20:08:46,057 INFO L78 Accepts]: Start accepts. Automaton has 25575 states and 34995 transitions. Word has length 79 [2021-11-25 20:08:46,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:08:46,058 INFO L470 AbstractCegarLoop]: Abstraction has 25575 states and 34995 transitions. [2021-11-25 20:08:46,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:46,058 INFO L276 IsEmpty]: Start isEmpty. Operand 25575 states and 34995 transitions. [2021-11-25 20:08:46,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-25 20:08:46,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:08:46,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:08:46,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 20:08:46,069 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-25 20:08:46,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:08:46,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1278563792, now seen corresponding path program 1 times [2021-11-25 20:08:46,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:08:46,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547133830] [2021-11-25 20:08:46,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:08:46,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:08:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:08:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:08:46,173 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:08:46,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547133830] [2021-11-25 20:08:46,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547133830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:08:46,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:08:46,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:08:46,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353730445] [2021-11-25 20:08:46,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:08:46,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:08:46,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:08:46,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:08:46,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:08:46,175 INFO L87 Difference]: Start difference. First operand 25575 states and 34995 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:08:51,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:08:51,694 INFO L93 Difference]: Finished difference Result 43881 states and 60276 transitions. [2021-11-25 20:08:51,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:08:51,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-25 20:08:51,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:08:51,759 INFO L225 Difference]: With dead ends: 43881 [2021-11-25 20:08:51,760 INFO L226 Difference]: Without dead ends: 43879 [2021-11-25 20:08:51,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:08:51,769 INFO L933 BasicCegarLoop]: 1175 mSDtfsCounter, 102 mSDsluCounter, 2224 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:08:51,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 3373 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:08:51,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43879 states.