./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI --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 72aca9735a0330ad4ed4e9de4f21904354ce62c742d488d0b09ce6da875c2798 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 04:06:29,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:06:29,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:06:29,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:06:29,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:06:29,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:06:29,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:06:29,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:06:29,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:06:29,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:06:29,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:06:29,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:06:29,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:06:29,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:06:29,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:06:29,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:06:29,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:06:29,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:06:29,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:06:29,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:06:29,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:06:29,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:06:29,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:06:29,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:06:29,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:06:29,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:06:29,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:06:29,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:06:29,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:06:29,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:06:29,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:06:29,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:06:29,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:06:29,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:06:29,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:06:29,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:06:29,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:06:29,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:06:29,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:06:29,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:06:29,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:06:29,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:06:29,730 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:06:29,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:06:29,731 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:06:29,732 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:06:29,733 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:06:29,733 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:06:29,734 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:06:29,734 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:06:29,734 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:06:29,735 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:06:29,736 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:06:29,736 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:06:29,737 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:06:29,737 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:06:29,737 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:06:29,738 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:06:29,738 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:06:29,738 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:06:29,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:06:29,739 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:06:29,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:06:29,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:06:29,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:06:29,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:06:29,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:06:29,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:06:29,741 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:06:29,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:06:29,742 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:06:29,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:06:29,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:06:29,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:06:29,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:06:29,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:06:29,744 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:06:29,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:06:29,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:06:29,745 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:06:29,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:06:29,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:06:29,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:06:29,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72aca9735a0330ad4ed4e9de4f21904354ce62c742d488d0b09ce6da875c2798 [2022-11-03 04:06:30,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:06:30,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:06:30,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:06:30,136 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:06:30,137 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:06:30,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-11-03 04:06:30,228 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/data/d8e16bad7/44e03f93228640c48d04682b22abc873/FLAG0648230fb [2022-11-03 04:06:31,013 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:06:31,016 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-11-03 04:06:31,047 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/data/d8e16bad7/44e03f93228640c48d04682b22abc873/FLAG0648230fb [2022-11-03 04:06:31,094 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/data/d8e16bad7/44e03f93228640c48d04682b22abc873 [2022-11-03 04:06:31,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:06:31,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:06:31,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:06:31,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:06:31,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:06:31,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:31" (1/1) ... [2022-11-03 04:06:31,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ec340d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:31, skipping insertion in model container [2022-11-03 04:06:31,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:31" (1/1) ... [2022-11-03 04:06:31,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:06:31,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:06:31,678 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_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8448,8461] [2022-11-03 04:06:31,734 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_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12616,12629] [2022-11-03 04:06:31,804 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_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20366,20379] [2022-11-03 04:06:31,855 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_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27098,27111] [2022-11-03 04:06:31,982 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_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[47963,47976] [2022-11-03 04:06:32,074 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_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[73065,73078] [2022-11-03 04:06:32,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:06:32,276 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:06:32,331 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_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8448,8461] [2022-11-03 04:06:32,343 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_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12616,12629] [2022-11-03 04:06:32,372 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_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20366,20379] [2022-11-03 04:06:32,398 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_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27098,27111] [2022-11-03 04:06:32,448 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_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[47963,47976] [2022-11-03 04:06:32,520 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_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[73065,73078] [2022-11-03 04:06:32,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:06:32,693 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:06:32,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32 WrapperNode [2022-11-03 04:06:32,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:06:32,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:06:32,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:06:32,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:06:32,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:32,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:32,891 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 5697 [2022-11-03 04:06:32,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:06:32,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:06:32,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:06:32,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:06:32,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:32,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:32,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:32,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:33,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:33,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:33,068 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:33,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:33,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:06:33,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:06:33,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:06:33,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:06:33,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (1/1) ... [2022-11-03 04:06:33,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:06:33,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:06:33,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:06:33,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:06:33,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:06:33,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:06:33,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:06:33,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:06:33,608 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:06:33,610 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:06:37,033 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:06:37,556 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:06:37,557 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 04:06:37,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:37 BoogieIcfgContainer [2022-11-03 04:06:37,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:06:37,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:06:37,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:06:37,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:06:37,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:06:31" (1/3) ... [2022-11-03 04:06:37,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6939ec91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:06:37, skipping insertion in model container [2022-11-03 04:06:37,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:32" (2/3) ... [2022-11-03 04:06:37,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6939ec91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:06:37, skipping insertion in model container [2022-11-03 04:06:37,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:37" (3/3) ... [2022-11-03 04:06:37,579 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-11-03 04:06:37,600 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:06:37,601 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-03 04:06:37,698 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:06:37,719 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f1ca1f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:06:37,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-03 04:06:37,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 1134 states, 1127 states have (on average 1.7870452528837621) internal successors, (2014), 1133 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:37,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 04:06:37,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:37,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:37,760 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:06:37,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:37,766 INFO L85 PathProgramCache]: Analyzing trace with hash 440971975, now seen corresponding path program 1 times [2022-11-03 04:06:37,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:37,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476414219] [2022-11-03 04:06:37,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:37,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:38,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:38,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476414219] [2022-11-03 04:06:38,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476414219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:38,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:38,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:06:38,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105504160] [2022-11-03 04:06:38,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:38,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:06:38,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:38,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:06:38,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:06:38,530 INFO L87 Difference]: Start difference. First operand has 1134 states, 1127 states have (on average 1.7870452528837621) internal successors, (2014), 1133 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:40,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:40,221 INFO L93 Difference]: Finished difference Result 2051 states and 3535 transitions. [2022-11-03 04:06:40,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:06:40,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-03 04:06:40,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:40,254 INFO L225 Difference]: With dead ends: 2051 [2022-11-03 04:06:40,254 INFO L226 Difference]: Without dead ends: 1335 [2022-11-03 04:06:40,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:06:40,270 INFO L413 NwaCegarLoop]: 1068 mSDtfsCounter, 6254 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6254 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:40,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6254 Valid, 1399 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 04:06:40,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2022-11-03 04:06:40,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1321. [2022-11-03 04:06:40,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1315 states have (on average 1.2631178707224335) internal successors, (1661), 1320 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:40,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1661 transitions. [2022-11-03 04:06:40,422 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1661 transitions. Word has length 51 [2022-11-03 04:06:40,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:40,422 INFO L495 AbstractCegarLoop]: Abstraction has 1321 states and 1661 transitions. [2022-11-03 04:06:40,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:40,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1661 transitions. [2022-11-03 04:06:40,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 04:06:40,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:40,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:40,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:06:40,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:06:40,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:40,429 INFO L85 PathProgramCache]: Analyzing trace with hash -230979491, now seen corresponding path program 1 times [2022-11-03 04:06:40,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:40,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344382737] [2022-11-03 04:06:40,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:40,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:40,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:40,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:40,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344382737] [2022-11-03 04:06:40,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344382737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:40,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:40,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:06:40,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414209141] [2022-11-03 04:06:40,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:40,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:06:40,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:40,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:06:40,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:06:40,678 INFO L87 Difference]: Start difference. First operand 1321 states and 1661 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:41,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:41,829 INFO L93 Difference]: Finished difference Result 2410 states and 3059 transitions. [2022-11-03 04:06:41,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:06:41,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-03 04:06:41,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:41,844 INFO L225 Difference]: With dead ends: 2410 [2022-11-03 04:06:41,844 INFO L226 Difference]: Without dead ends: 1629 [2022-11-03 04:06:41,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:06:41,848 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 3942 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3942 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:41,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3942 Valid, 791 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 04:06:41,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2022-11-03 04:06:41,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1619. [2022-11-03 04:06:42,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1613 states have (on average 1.2665840049597024) internal successors, (2043), 1618 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:42,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2043 transitions. [2022-11-03 04:06:42,014 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2043 transitions. Word has length 51 [2022-11-03 04:06:42,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:42,014 INFO L495 AbstractCegarLoop]: Abstraction has 1619 states and 2043 transitions. [2022-11-03 04:06:42,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:42,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2043 transitions. [2022-11-03 04:06:42,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 04:06:42,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:42,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:42,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:06:42,020 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:06:42,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:42,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1941934323, now seen corresponding path program 1 times [2022-11-03 04:06:42,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:42,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000068213] [2022-11-03 04:06:42,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:42,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:42,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:42,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000068213] [2022-11-03 04:06:42,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000068213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:42,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:42,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:06:42,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335195428] [2022-11-03 04:06:42,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:42,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:06:42,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:42,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:06:42,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:06:42,244 INFO L87 Difference]: Start difference. First operand 1619 states and 2043 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:43,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:43,395 INFO L93 Difference]: Finished difference Result 3140 states and 3984 transitions. [2022-11-03 04:06:43,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:06:43,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-03 04:06:43,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:43,425 INFO L225 Difference]: With dead ends: 3140 [2022-11-03 04:06:43,426 INFO L226 Difference]: Without dead ends: 2338 [2022-11-03 04:06:43,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:06:43,434 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 3560 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3560 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:43,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3560 Valid, 765 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 04:06:43,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2022-11-03 04:06:43,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 2332. [2022-11-03 04:06:43,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2332 states, 2326 states have (on average 1.2519346517626828) internal successors, (2912), 2331 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:43,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 2912 transitions. [2022-11-03 04:06:43,615 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 2912 transitions. Word has length 51 [2022-11-03 04:06:43,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:43,615 INFO L495 AbstractCegarLoop]: Abstraction has 2332 states and 2912 transitions. [2022-11-03 04:06:43,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:43,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 2912 transitions. [2022-11-03 04:06:43,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 04:06:43,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:43,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:43,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:06:43,620 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:06:43,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:43,621 INFO L85 PathProgramCache]: Analyzing trace with hash -274476207, now seen corresponding path program 1 times [2022-11-03 04:06:43,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:43,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057777339] [2022-11-03 04:06:43,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:43,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:44,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:44,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:44,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057777339] [2022-11-03 04:06:44,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057777339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:44,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:44,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:06:44,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249647323] [2022-11-03 04:06:44,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:44,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 04:06:44,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:44,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 04:06:44,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:06:44,047 INFO L87 Difference]: Start difference. First operand 2332 states and 2912 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:46,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:46,570 INFO L93 Difference]: Finished difference Result 4239 states and 5441 transitions. [2022-11-03 04:06:46,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 04:06:46,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-03 04:06:46,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:46,589 INFO L225 Difference]: With dead ends: 4239 [2022-11-03 04:06:46,589 INFO L226 Difference]: Without dead ends: 3875 [2022-11-03 04:06:46,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-03 04:06:46,602 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 3948 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 2323 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3948 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 2465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:46,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3948 Valid, 2532 Invalid, 2465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2323 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 04:06:46,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3875 states. [2022-11-03 04:06:46,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3875 to 2332. [2022-11-03 04:06:46,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2332 states, 2326 states have (on average 1.2515047291487533) internal successors, (2911), 2331 states have internal predecessors, (2911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:46,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 2911 transitions. [2022-11-03 04:06:46,844 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 2911 transitions. Word has length 53 [2022-11-03 04:06:46,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:46,845 INFO L495 AbstractCegarLoop]: Abstraction has 2332 states and 2911 transitions. [2022-11-03 04:06:46,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:46,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 2911 transitions. [2022-11-03 04:06:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 04:06:46,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:46,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:46,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:06:46,849 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:06:46,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:46,850 INFO L85 PathProgramCache]: Analyzing trace with hash -603870735, now seen corresponding path program 1 times [2022-11-03 04:06:46,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:46,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731889840] [2022-11-03 04:06:46,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:46,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:47,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:47,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731889840] [2022-11-03 04:06:47,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731889840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:47,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:47,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:06:47,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318877847] [2022-11-03 04:06:47,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:47,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 04:06:47,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:47,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 04:06:47,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:06:47,248 INFO L87 Difference]: Start difference. First operand 2332 states and 2911 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:50,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:50,060 INFO L93 Difference]: Finished difference Result 3775 states and 4807 transitions. [2022-11-03 04:06:50,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 04:06:50,065 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-03 04:06:50,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:50,079 INFO L225 Difference]: With dead ends: 3775 [2022-11-03 04:06:50,080 INFO L226 Difference]: Without dead ends: 3769 [2022-11-03 04:06:50,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:06:50,082 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 2994 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 2783 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2994 SdHoareTripleChecker+Valid, 2983 SdHoareTripleChecker+Invalid, 2861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:50,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2994 Valid, 2983 Invalid, 2861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2783 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 04:06:50,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2022-11-03 04:06:50,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 2332. [2022-11-03 04:06:50,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2332 states, 2326 states have (on average 1.2510748065348238) internal successors, (2910), 2331 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:50,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 2910 transitions. [2022-11-03 04:06:50,349 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 2910 transitions. Word has length 53 [2022-11-03 04:06:50,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:50,350 INFO L495 AbstractCegarLoop]: Abstraction has 2332 states and 2910 transitions. [2022-11-03 04:06:50,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:50,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 2910 transitions. [2022-11-03 04:06:50,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 04:06:50,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:50,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:50,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 04:06:50,354 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:06:50,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:50,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1273862225, now seen corresponding path program 1 times [2022-11-03 04:06:50,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:50,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128559439] [2022-11-03 04:06:50,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:50,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:50,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:50,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128559439] [2022-11-03 04:06:50,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128559439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:50,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:50,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:06:50,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41999718] [2022-11-03 04:06:50,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:50,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:06:50,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:50,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:06:50,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:06:50,737 INFO L87 Difference]: Start difference. First operand 2332 states and 2910 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:52,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:52,690 INFO L93 Difference]: Finished difference Result 3883 states and 4973 transitions. [2022-11-03 04:06:52,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 04:06:52,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-03 04:06:52,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:52,703 INFO L225 Difference]: With dead ends: 3883 [2022-11-03 04:06:52,703 INFO L226 Difference]: Without dead ends: 3375 [2022-11-03 04:06:52,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:06:52,706 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 3702 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 1564 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3702 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:52,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3702 Valid, 1675 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1564 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 04:06:52,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2022-11-03 04:06:53,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 2332. [2022-11-03 04:06:53,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2332 states, 2326 states have (on average 1.2506448839208943) internal successors, (2909), 2331 states have internal predecessors, (2909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:53,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 2909 transitions. [2022-11-03 04:06:53,045 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 2909 transitions. Word has length 53 [2022-11-03 04:06:53,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:53,046 INFO L495 AbstractCegarLoop]: Abstraction has 2332 states and 2909 transitions. [2022-11-03 04:06:53,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:53,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 2909 transitions. [2022-11-03 04:06:53,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 04:06:53,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:53,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:53,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 04:06:53,052 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:06:53,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:53,053 INFO L85 PathProgramCache]: Analyzing trace with hash -843774436, now seen corresponding path program 1 times [2022-11-03 04:06:53,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:53,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179109975] [2022-11-03 04:06:53,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:53,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:53,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:53,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179109975] [2022-11-03 04:06:53,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179109975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:53,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:53,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:06:53,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691607391] [2022-11-03 04:06:53,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:53,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:06:53,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:53,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:06:53,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:53,167 INFO L87 Difference]: Start difference. First operand 2332 states and 2909 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:53,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:53,690 INFO L93 Difference]: Finished difference Result 3200 states and 4082 transitions. [2022-11-03 04:06:53,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:06:53,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-03 04:06:53,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:53,698 INFO L225 Difference]: With dead ends: 3200 [2022-11-03 04:06:53,698 INFO L226 Difference]: Without dead ends: 2033 [2022-11-03 04:06:53,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:53,701 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 559 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:53,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 1208 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:06:53,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2022-11-03 04:06:54,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 2031. [2022-11-03 04:06:54,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 2025 states have (on average 1.2320987654320987) internal successors, (2495), 2030 states have internal predecessors, (2495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:54,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 2495 transitions. [2022-11-03 04:06:54,049 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 2495 transitions. Word has length 54 [2022-11-03 04:06:54,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:54,050 INFO L495 AbstractCegarLoop]: Abstraction has 2031 states and 2495 transitions. [2022-11-03 04:06:54,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:54,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 2495 transitions. [2022-11-03 04:06:54,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 04:06:54,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:54,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:54,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 04:06:54,054 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:06:54,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:54,054 INFO L85 PathProgramCache]: Analyzing trace with hash 586810076, now seen corresponding path program 1 times [2022-11-03 04:06:54,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:54,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556021794] [2022-11-03 04:06:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:54,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:54,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:54,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556021794] [2022-11-03 04:06:54,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556021794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:54,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:54,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:06:54,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998987599] [2022-11-03 04:06:54,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:54,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:06:54,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:54,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:06:54,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:54,162 INFO L87 Difference]: Start difference. First operand 2031 states and 2495 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:54,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:54,659 INFO L93 Difference]: Finished difference Result 3121 states and 4006 transitions. [2022-11-03 04:06:54,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:06:54,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-03 04:06:54,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:54,665 INFO L225 Difference]: With dead ends: 3121 [2022-11-03 04:06:54,665 INFO L226 Difference]: Without dead ends: 2316 [2022-11-03 04:06:54,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:54,668 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 421 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:54,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1294 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:06:54,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2022-11-03 04:06:55,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2314. [2022-11-03 04:06:55,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2308 states have (on average 1.2608318890814558) internal successors, (2910), 2313 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:55,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 2910 transitions. [2022-11-03 04:06:55,111 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 2910 transitions. Word has length 54 [2022-11-03 04:06:55,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:55,112 INFO L495 AbstractCegarLoop]: Abstraction has 2314 states and 2910 transitions. [2022-11-03 04:06:55,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:55,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 2910 transitions. [2022-11-03 04:06:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 04:06:55,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:55,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:55,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 04:06:55,115 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:06:55,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:55,116 INFO L85 PathProgramCache]: Analyzing trace with hash -117726025, now seen corresponding path program 1 times [2022-11-03 04:06:55,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:55,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599015115] [2022-11-03 04:06:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:55,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:55,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:55,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599015115] [2022-11-03 04:06:55,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599015115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:55,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:55,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:06:55,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122629254] [2022-11-03 04:06:55,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:55,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:06:55,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:55,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:06:55,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:55,185 INFO L87 Difference]: Start difference. First operand 2314 states and 2910 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:55,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:55,880 INFO L93 Difference]: Finished difference Result 4188 states and 5469 transitions. [2022-11-03 04:06:55,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:06:55,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-03 04:06:55,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:55,886 INFO L225 Difference]: With dead ends: 4188 [2022-11-03 04:06:55,886 INFO L226 Difference]: Without dead ends: 2957 [2022-11-03 04:06:55,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:55,888 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 383 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:55,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 1317 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:06:55,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2022-11-03 04:06:56,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 2955. [2022-11-03 04:06:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2949 states have (on average 1.276703967446592) internal successors, (3765), 2954 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:56,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 3765 transitions. [2022-11-03 04:06:56,436 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 3765 transitions. Word has length 54 [2022-11-03 04:06:56,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:56,436 INFO L495 AbstractCegarLoop]: Abstraction has 2955 states and 3765 transitions. [2022-11-03 04:06:56,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 3765 transitions. [2022-11-03 04:06:56,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-03 04:06:56,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:56,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:56,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 04:06:56,439 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:06:56,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:56,440 INFO L85 PathProgramCache]: Analyzing trace with hash -812769836, now seen corresponding path program 1 times [2022-11-03 04:06:56,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:56,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781868815] [2022-11-03 04:06:56,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:56,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:56,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:56,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781868815] [2022-11-03 04:06:56,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781868815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:56,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:56,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:06:56,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226997430] [2022-11-03 04:06:56,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:56,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:06:56,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:56,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:06:56,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:56,503 INFO L87 Difference]: Start difference. First operand 2955 states and 3765 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:57,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:57,499 INFO L93 Difference]: Finished difference Result 5610 states and 7233 transitions. [2022-11-03 04:06:57,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:06:57,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-03 04:06:57,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:57,516 INFO L225 Difference]: With dead ends: 5610 [2022-11-03 04:06:57,521 INFO L226 Difference]: Without dead ends: 3205 [2022-11-03 04:06:57,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:57,526 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 620 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:57,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 880 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:06:57,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3205 states. [2022-11-03 04:06:57,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3205 to 2576. [2022-11-03 04:06:57,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2576 states, 2571 states have (on average 1.2843251653053287) internal successors, (3302), 2575 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:57,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2576 states to 2576 states and 3302 transitions. [2022-11-03 04:06:57,984 INFO L78 Accepts]: Start accepts. Automaton has 2576 states and 3302 transitions. Word has length 55 [2022-11-03 04:06:57,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:57,984 INFO L495 AbstractCegarLoop]: Abstraction has 2576 states and 3302 transitions. [2022-11-03 04:06:57,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:57,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2576 states and 3302 transitions. [2022-11-03 04:06:57,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-03 04:06:57,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:57,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:57,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 04:06:57,987 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:06:57,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:57,987 INFO L85 PathProgramCache]: Analyzing trace with hash 930333266, now seen corresponding path program 1 times [2022-11-03 04:06:57,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:57,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001382227] [2022-11-03 04:06:57,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:57,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:58,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:58,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001382227] [2022-11-03 04:06:58,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001382227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:58,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:58,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 04:06:58,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251239707] [2022-11-03 04:06:58,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:58,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 04:06:58,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:58,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 04:06:58,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:06:58,753 INFO L87 Difference]: Start difference. First operand 2576 states and 3302 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:00,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:00,983 INFO L93 Difference]: Finished difference Result 4254 states and 5471 transitions. [2022-11-03 04:07:00,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 04:07:00,983 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-03 04:07:00,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:00,993 INFO L225 Difference]: With dead ends: 4254 [2022-11-03 04:07:00,993 INFO L226 Difference]: Without dead ends: 4011 [2022-11-03 04:07:00,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:07:00,996 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 2752 mSDsluCounter, 3489 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2752 SdHoareTripleChecker+Valid, 4116 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:00,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2752 Valid, 4116 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 04:07:01,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2022-11-03 04:07:01,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 2575. [2022-11-03 04:07:01,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2575 states, 2570 states have (on average 1.284046692607004) internal successors, (3300), 2574 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:01,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 3300 transitions. [2022-11-03 04:07:01,487 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 3300 transitions. Word has length 55 [2022-11-03 04:07:01,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:01,487 INFO L495 AbstractCegarLoop]: Abstraction has 2575 states and 3300 transitions. [2022-11-03 04:07:01,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:01,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 3300 transitions. [2022-11-03 04:07:01,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-03 04:07:01,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:01,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:01,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 04:07:01,490 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:07:01,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:01,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1102645022, now seen corresponding path program 1 times [2022-11-03 04:07:01,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:01,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188184108] [2022-11-03 04:07:01,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:01,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:01,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:01,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:01,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188184108] [2022-11-03 04:07:01,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188184108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:01,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:01,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:07:01,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963765285] [2022-11-03 04:07:01,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:01,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:07:01,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:01,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:07:01,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:07:01,555 INFO L87 Difference]: Start difference. First operand 2575 states and 3300 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:02,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:02,319 INFO L93 Difference]: Finished difference Result 4741 states and 6158 transitions. [2022-11-03 04:07:02,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:07:02,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-03 04:07:02,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:02,326 INFO L225 Difference]: With dead ends: 4741 [2022-11-03 04:07:02,326 INFO L226 Difference]: Without dead ends: 2604 [2022-11-03 04:07:02,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:07:02,330 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 478 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:02,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 697 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:07:02,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2022-11-03 04:07:02,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2277. [2022-11-03 04:07:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 2273 states have (on average 1.2864056313242411) internal successors, (2924), 2276 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:02,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 2924 transitions. [2022-11-03 04:07:02,968 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 2924 transitions. Word has length 55 [2022-11-03 04:07:02,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:02,969 INFO L495 AbstractCegarLoop]: Abstraction has 2277 states and 2924 transitions. [2022-11-03 04:07:02,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:02,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 2924 transitions. [2022-11-03 04:07:02,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 04:07:02,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:02,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:02,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 04:07:02,971 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:07:02,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:02,972 INFO L85 PathProgramCache]: Analyzing trace with hash -130351128, now seen corresponding path program 1 times [2022-11-03 04:07:02,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:02,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885544886] [2022-11-03 04:07:02,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:02,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:03,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:03,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:03,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885544886] [2022-11-03 04:07:03,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885544886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:03,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:03,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:07:03,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594646617] [2022-11-03 04:07:03,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:03,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:07:03,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:03,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:07:03,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:07:03,100 INFO L87 Difference]: Start difference. First operand 2277 states and 2924 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:03,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:03,722 INFO L93 Difference]: Finished difference Result 3819 states and 4975 transitions. [2022-11-03 04:07:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:07:03,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-03 04:07:03,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:03,725 INFO L225 Difference]: With dead ends: 3819 [2022-11-03 04:07:03,725 INFO L226 Difference]: Without dead ends: 2054 [2022-11-03 04:07:03,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:07:03,728 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 984 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:03,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 723 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:07:03,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2022-11-03 04:07:04,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 2050. [2022-11-03 04:07:04,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2050 states, 2046 states have (on average 1.2771260997067448) internal successors, (2613), 2049 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:04,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 2613 transitions. [2022-11-03 04:07:04,246 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 2613 transitions. Word has length 56 [2022-11-03 04:07:04,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:04,247 INFO L495 AbstractCegarLoop]: Abstraction has 2050 states and 2613 transitions. [2022-11-03 04:07:04,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:04,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 2613 transitions. [2022-11-03 04:07:04,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 04:07:04,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:04,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:04,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 04:07:04,249 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:07:04,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:04,250 INFO L85 PathProgramCache]: Analyzing trace with hash -375785998, now seen corresponding path program 1 times [2022-11-03 04:07:04,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:04,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967103313] [2022-11-03 04:07:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:04,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:04,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:04,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:04,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967103313] [2022-11-03 04:07:04,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967103313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:04,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:04,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 04:07:04,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438850241] [2022-11-03 04:07:04,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:04,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 04:07:04,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:04,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 04:07:04,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:07:04,802 INFO L87 Difference]: Start difference. First operand 2050 states and 2613 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:07,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:07,446 INFO L93 Difference]: Finished difference Result 4328 states and 5492 transitions. [2022-11-03 04:07:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-03 04:07:07,447 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-03 04:07:07,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:07,454 INFO L225 Difference]: With dead ends: 4328 [2022-11-03 04:07:07,454 INFO L226 Difference]: Without dead ends: 4041 [2022-11-03 04:07:07,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2022-11-03 04:07:07,456 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 2926 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2926 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:07,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2926 Valid, 2832 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 04:07:07,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4041 states. [2022-11-03 04:07:08,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4041 to 2005. [2022-11-03 04:07:08,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 2003 states have (on average 1.2785821268097852) internal successors, (2561), 2004 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:08,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 2561 transitions. [2022-11-03 04:07:08,192 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 2561 transitions. Word has length 56 [2022-11-03 04:07:08,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:08,192 INFO L495 AbstractCegarLoop]: Abstraction has 2005 states and 2561 transitions. [2022-11-03 04:07:08,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:08,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 2561 transitions. [2022-11-03 04:07:08,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 04:07:08,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:08,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:08,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 04:07:08,197 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:07:08,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:08,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1266882465, now seen corresponding path program 1 times [2022-11-03 04:07:08,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:08,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679142229] [2022-11-03 04:07:08,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:08,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:08,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:08,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679142229] [2022-11-03 04:07:08,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679142229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:08,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:08,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 04:07:08,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166210573] [2022-11-03 04:07:08,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:08,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 04:07:08,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:08,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 04:07:08,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 04:07:08,757 INFO L87 Difference]: Start difference. First operand 2005 states and 2561 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:11,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:11,202 INFO L93 Difference]: Finished difference Result 3892 states and 4971 transitions. [2022-11-03 04:07:11,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 04:07:11,202 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-03 04:07:11,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:11,209 INFO L225 Difference]: With dead ends: 3892 [2022-11-03 04:07:11,209 INFO L226 Difference]: Without dead ends: 3888 [2022-11-03 04:07:11,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-03 04:07:11,211 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 2240 mSDsluCounter, 2770 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2240 SdHoareTripleChecker+Valid, 3283 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:11,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2240 Valid, 3283 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 04:07:11,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2022-11-03 04:07:11,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 2001. [2022-11-03 04:07:11,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 2000 states have (on average 1.2785) internal successors, (2557), 2000 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 2557 transitions. [2022-11-03 04:07:11,975 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 2557 transitions. Word has length 56 [2022-11-03 04:07:11,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:11,976 INFO L495 AbstractCegarLoop]: Abstraction has 2001 states and 2557 transitions. [2022-11-03 04:07:11,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:11,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 2557 transitions. [2022-11-03 04:07:11,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-03 04:07:11,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:11,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:11,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 04:07:11,977 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:07:11,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:11,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1401164501, now seen corresponding path program 1 times [2022-11-03 04:07:11,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:11,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343820216] [2022-11-03 04:07:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:11,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:12,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:12,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:12,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343820216] [2022-11-03 04:07:12,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343820216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:12,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:12,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:07:12,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452158708] [2022-11-03 04:07:12,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:12,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:07:12,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:12,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:07:12,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:07:12,103 INFO L87 Difference]: Start difference. First operand 2001 states and 2557 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:13,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:13,834 INFO L93 Difference]: Finished difference Result 4453 states and 5829 transitions. [2022-11-03 04:07:13,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:07:13,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-11-03 04:07:13,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:13,841 INFO L225 Difference]: With dead ends: 4453 [2022-11-03 04:07:13,841 INFO L226 Difference]: Without dead ends: 3015 [2022-11-03 04:07:13,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:07:13,844 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 193 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:13,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 670 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:07:13,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2022-11-03 04:07:14,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 2739. [2022-11-03 04:07:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 2738 states have (on average 1.277209642074507) internal successors, (3497), 2738 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:14,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3497 transitions. [2022-11-03 04:07:14,814 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3497 transitions. Word has length 60 [2022-11-03 04:07:14,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:14,814 INFO L495 AbstractCegarLoop]: Abstraction has 2739 states and 3497 transitions. [2022-11-03 04:07:14,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:14,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3497 transitions. [2022-11-03 04:07:14,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 04:07:14,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:14,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:14,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 04:07:14,816 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:07:14,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:14,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1469253499, now seen corresponding path program 1 times [2022-11-03 04:07:14,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:14,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848420682] [2022-11-03 04:07:14,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:14,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:15,181 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:15,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848420682] [2022-11-03 04:07:15,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848420682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:15,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:15,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 04:07:15,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155670135] [2022-11-03 04:07:15,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:15,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 04:07:15,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:15,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 04:07:15,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:07:15,184 INFO L87 Difference]: Start difference. First operand 2739 states and 3497 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:18,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:18,985 INFO L93 Difference]: Finished difference Result 6291 states and 7991 transitions. [2022-11-03 04:07:18,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 04:07:18,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 04:07:18,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:18,999 INFO L225 Difference]: With dead ends: 6291 [2022-11-03 04:07:19,000 INFO L226 Difference]: Without dead ends: 6289 [2022-11-03 04:07:19,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-11-03 04:07:19,006 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1731 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:19,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 2176 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:07:19,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6289 states. [2022-11-03 04:07:20,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6289 to 3328. [2022-11-03 04:07:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3328 states, 3327 states have (on average 1.272317403065825) internal successors, (4233), 3327 states have internal predecessors, (4233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3328 states to 3328 states and 4233 transitions. [2022-11-03 04:07:20,488 INFO L78 Accepts]: Start accepts. Automaton has 3328 states and 4233 transitions. Word has length 65 [2022-11-03 04:07:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:20,488 INFO L495 AbstractCegarLoop]: Abstraction has 3328 states and 4233 transitions. [2022-11-03 04:07:20,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:20,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3328 states and 4233 transitions. [2022-11-03 04:07:20,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 04:07:20,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:20,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:20,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 04:07:20,490 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:07:20,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:20,491 INFO L85 PathProgramCache]: Analyzing trace with hash 835374526, now seen corresponding path program 1 times [2022-11-03 04:07:20,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:20,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721001970] [2022-11-03 04:07:20,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:20,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:20,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:20,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721001970] [2022-11-03 04:07:20,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721001970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:20,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:20,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:07:20,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416418422] [2022-11-03 04:07:20,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:20,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:07:20,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:20,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:07:20,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:07:20,617 INFO L87 Difference]: Start difference. First operand 3328 states and 4233 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:22,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:22,355 INFO L93 Difference]: Finished difference Result 6482 states and 8411 transitions. [2022-11-03 04:07:22,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:07:22,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 04:07:22,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:22,364 INFO L225 Difference]: With dead ends: 6482 [2022-11-03 04:07:22,365 INFO L226 Difference]: Without dead ends: 4451 [2022-11-03 04:07:22,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:07:22,369 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 243 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:22,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 643 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:07:22,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2022-11-03 04:07:24,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 4155. [2022-11-03 04:07:24,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4155 states, 4154 states have (on average 1.2676937891189215) internal successors, (5266), 4154 states have internal predecessors, (5266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:24,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4155 states to 4155 states and 5266 transitions. [2022-11-03 04:07:24,276 INFO L78 Accepts]: Start accepts. Automaton has 4155 states and 5266 transitions. Word has length 65 [2022-11-03 04:07:24,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:24,276 INFO L495 AbstractCegarLoop]: Abstraction has 4155 states and 5266 transitions. [2022-11-03 04:07:24,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:24,279 INFO L276 IsEmpty]: Start isEmpty. Operand 4155 states and 5266 transitions. [2022-11-03 04:07:24,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 04:07:24,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:24,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:24,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 04:07:24,281 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:07:24,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:24,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1048433134, now seen corresponding path program 1 times [2022-11-03 04:07:24,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:24,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346229495] [2022-11-03 04:07:24,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:24,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:24,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:24,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346229495] [2022-11-03 04:07:24,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346229495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:24,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:24,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 04:07:24,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506872109] [2022-11-03 04:07:24,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:24,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 04:07:24,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:24,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 04:07:24,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:07:24,709 INFO L87 Difference]: Start difference. First operand 4155 states and 5266 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:28,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:28,309 INFO L93 Difference]: Finished difference Result 7278 states and 9224 transitions. [2022-11-03 04:07:28,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 04:07:28,310 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-03 04:07:28,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:28,318 INFO L225 Difference]: With dead ends: 7278 [2022-11-03 04:07:28,318 INFO L226 Difference]: Without dead ends: 7276 [2022-11-03 04:07:28,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:07:28,320 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1358 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:28,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1358 Valid, 2222 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:07:28,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7276 states. [2022-11-03 04:07:30,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7276 to 4478. [2022-11-03 04:07:30,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 1.2644628099173554) internal successors, (5661), 4477 states have internal predecessors, (5661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:30,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 5661 transitions. [2022-11-03 04:07:30,141 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 5661 transitions. Word has length 71 [2022-11-03 04:07:30,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:30,142 INFO L495 AbstractCegarLoop]: Abstraction has 4478 states and 5661 transitions. [2022-11-03 04:07:30,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:30,142 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 5661 transitions. [2022-11-03 04:07:30,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-03 04:07:30,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:30,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:30,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 04:07:30,145 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:07:30,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:30,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1409043330, now seen corresponding path program 1 times [2022-11-03 04:07:30,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:30,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045046465] [2022-11-03 04:07:30,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:30,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:30,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:30,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045046465] [2022-11-03 04:07:30,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045046465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:30,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:30,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 04:07:30,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557419629] [2022-11-03 04:07:30,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:30,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 04:07:30,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:30,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 04:07:30,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:07:30,549 INFO L87 Difference]: Start difference. First operand 4478 states and 5661 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2022-11-03 04:07:34,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:34,281 INFO L93 Difference]: Finished difference Result 7351 states and 9313 transitions. [2022-11-03 04:07:34,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 04:07:34,281 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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 [2022-11-03 04:07:34,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:34,292 INFO L225 Difference]: With dead ends: 7351 [2022-11-03 04:07:34,292 INFO L226 Difference]: Without dead ends: 7349 [2022-11-03 04:07:34,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:07:34,295 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 1392 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:34,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1392 Valid, 2294 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:07:34,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7349 states. [2022-11-03 04:07:36,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7349 to 4825. [2022-11-03 04:07:36,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4825 states, 4824 states have (on average 1.2624378109452736) internal successors, (6090), 4824 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:36,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4825 states to 4825 states and 6090 transitions. [2022-11-03 04:07:36,302 INFO L78 Accepts]: Start accepts. Automaton has 4825 states and 6090 transitions. Word has length 75 [2022-11-03 04:07:36,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:36,303 INFO L495 AbstractCegarLoop]: Abstraction has 4825 states and 6090 transitions. [2022-11-03 04:07:36,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2022-11-03 04:07:36,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4825 states and 6090 transitions. [2022-11-03 04:07:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-03 04:07:36,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:36,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:36,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 04:07:36,306 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:07:36,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:36,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2071996820, now seen corresponding path program 1 times [2022-11-03 04:07:36,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:36,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068289363] [2022-11-03 04:07:36,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:36,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:36,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:36,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068289363] [2022-11-03 04:07:36,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068289363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:36,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:36,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 04:07:36,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236146771] [2022-11-03 04:07:36,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:36,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 04:07:36,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:36,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 04:07:36,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:07:36,656 INFO L87 Difference]: Start difference. First operand 4825 states and 6090 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2022-11-03 04:07:40,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:40,595 INFO L93 Difference]: Finished difference Result 7410 states and 9415 transitions. [2022-11-03 04:07:40,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 04:07:40,596 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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 [2022-11-03 04:07:40,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:40,602 INFO L225 Difference]: With dead ends: 7410 [2022-11-03 04:07:40,603 INFO L226 Difference]: Without dead ends: 7408 [2022-11-03 04:07:40,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2022-11-03 04:07:40,605 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 1392 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:40,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1392 Valid, 2488 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:07:40,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7408 states. [2022-11-03 04:07:42,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7408 to 4789. [2022-11-03 04:07:42,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4789 states, 4788 states have (on average 1.2627401837928154) internal successors, (6046), 4788 states have internal predecessors, (6046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:42,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4789 states to 4789 states and 6046 transitions. [2022-11-03 04:07:42,612 INFO L78 Accepts]: Start accepts. Automaton has 4789 states and 6046 transitions. Word has length 75 [2022-11-03 04:07:42,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:42,612 INFO L495 AbstractCegarLoop]: Abstraction has 4789 states and 6046 transitions. [2022-11-03 04:07:42,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 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) [2022-11-03 04:07:42,612 INFO L276 IsEmpty]: Start isEmpty. Operand 4789 states and 6046 transitions. [2022-11-03 04:07:42,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 04:07:42,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:42,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:42,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 04:07:42,619 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:07:42,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:42,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2066736926, now seen corresponding path program 1 times [2022-11-03 04:07:42,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:42,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360056811] [2022-11-03 04:07:42,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:42,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 04:07:42,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:42,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360056811] [2022-11-03 04:07:42,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360056811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:42,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:42,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:07:42,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512384110] [2022-11-03 04:07:42,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:42,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 04:07:42,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:42,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 04:07:42,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:07:42,944 INFO L87 Difference]: Start difference. First operand 4789 states and 6046 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:47,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:47,880 INFO L93 Difference]: Finished difference Result 9925 states and 12519 transitions. [2022-11-03 04:07:47,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 04:07:47,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-03 04:07:47,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:47,887 INFO L225 Difference]: With dead ends: 9925 [2022-11-03 04:07:47,888 INFO L226 Difference]: Without dead ends: 8096 [2022-11-03 04:07:47,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2022-11-03 04:07:47,890 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1493 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:47,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1344 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 04:07:47,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2022-11-03 04:07:49,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 4772. [2022-11-03 04:07:49,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4772 states, 4771 states have (on average 1.2634667784531546) internal successors, (6028), 4771 states have internal predecessors, (6028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:49,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4772 states to 4772 states and 6028 transitions. [2022-11-03 04:07:49,845 INFO L78 Accepts]: Start accepts. Automaton has 4772 states and 6028 transitions. Word has length 77 [2022-11-03 04:07:49,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:49,845 INFO L495 AbstractCegarLoop]: Abstraction has 4772 states and 6028 transitions. [2022-11-03 04:07:49,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:49,845 INFO L276 IsEmpty]: Start isEmpty. Operand 4772 states and 6028 transitions. [2022-11-03 04:07:49,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 04:07:49,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:49,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:49,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 04:07:49,847 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:07:49,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:49,848 INFO L85 PathProgramCache]: Analyzing trace with hash -175558868, now seen corresponding path program 1 times [2022-11-03 04:07:49,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:49,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836058287] [2022-11-03 04:07:49,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:49,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:50,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 04:07:50,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:50,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836058287] [2022-11-03 04:07:50,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836058287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:50,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:50,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:07:50,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874093605] [2022-11-03 04:07:50,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:50,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:07:50,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:50,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:07:50,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:07:50,098 INFO L87 Difference]: Start difference. First operand 4772 states and 6028 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:53,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:53,684 INFO L93 Difference]: Finished difference Result 7642 states and 9673 transitions. [2022-11-03 04:07:53,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 04:07:53,685 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-03 04:07:53,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:53,691 INFO L225 Difference]: With dead ends: 7642 [2022-11-03 04:07:53,691 INFO L226 Difference]: Without dead ends: 5810 [2022-11-03 04:07:53,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-03 04:07:53,693 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 1578 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:53,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 841 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 04:07:53,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5810 states. [2022-11-03 04:07:55,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5810 to 4537. [2022-11-03 04:07:55,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4537 states, 4536 states have (on average 1.26168430335097) internal successors, (5723), 4536 states have internal predecessors, (5723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:55,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 5723 transitions. [2022-11-03 04:07:55,702 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 5723 transitions. Word has length 77 [2022-11-03 04:07:55,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:55,703 INFO L495 AbstractCegarLoop]: Abstraction has 4537 states and 5723 transitions. [2022-11-03 04:07:55,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:07:55,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 5723 transitions. [2022-11-03 04:07:55,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 04:07:55,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:55,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:55,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-03 04:07:55,706 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:07:55,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:55,707 INFO L85 PathProgramCache]: Analyzing trace with hash -262712424, now seen corresponding path program 1 times [2022-11-03 04:07:55,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:55,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229042283] [2022-11-03 04:07:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:55,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:56,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:56,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:56,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229042283] [2022-11-03 04:07:56,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229042283] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:07:56,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334953093] [2022-11-03 04:07:56,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:56,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:07:56,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:07:56,700 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:07:56,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:07:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:57,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 04:07:57,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 04:07:58,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:07:58,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334953093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:58,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:07:58,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2022-11-03 04:07:58,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87320742] [2022-11-03 04:07:58,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:58,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 04:07:58,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:58,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 04:07:58,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2022-11-03 04:07:58,306 INFO L87 Difference]: Start difference. First operand 4537 states and 5723 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 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) [2022-11-03 04:08:04,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:04,223 INFO L93 Difference]: Finished difference Result 8925 states and 11311 transitions. [2022-11-03 04:08:04,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 04:08:04,223 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 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 78 [2022-11-03 04:08:04,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:04,230 INFO L225 Difference]: With dead ends: 8925 [2022-11-03 04:08:04,230 INFO L226 Difference]: Without dead ends: 7113 [2022-11-03 04:08:04,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 04:08:04,233 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 2751 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2751 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:04,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2751 Valid, 2513 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 04:08:04,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7113 states. [2022-11-03 04:08:07,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7113 to 4798. [2022-11-03 04:08:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 4797 states have (on average 1.2624557014800917) internal successors, (6056), 4797 states have internal predecessors, (6056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:08:07,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 6056 transitions. [2022-11-03 04:08:07,109 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 6056 transitions. Word has length 78 [2022-11-03 04:08:07,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:07,110 INFO L495 AbstractCegarLoop]: Abstraction has 4798 states and 6056 transitions. [2022-11-03 04:08:07,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 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) [2022-11-03 04:08:07,110 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 6056 transitions. [2022-11-03 04:08:07,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 04:08:07,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:07,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:07,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 04:08:07,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-03 04:08:07,313 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:08:07,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:07,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1477843576, now seen corresponding path program 1 times [2022-11-03 04:08:07,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:08:07,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547354328] [2022-11-03 04:08:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:07,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:08:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:08,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:08:08,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547354328] [2022-11-03 04:08:08,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547354328] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:08:08,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042473115] [2022-11-03 04:08:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:08,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:08:08,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:08:08,268 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:08:08,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 04:08:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:08,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-03 04:08:08,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:10,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:08:17,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:17,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042473115] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:08:17,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1053374810] [2022-11-03 04:08:17,428 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-11-03 04:08:17,428 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:08:17,435 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:08:17,442 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:08:17,442 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:08:17,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:08:17,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:08:17,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 04:08:17,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:08:17,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:08:17,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:08:17,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 04:10:17,465 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:10:27,503 WARN L234 SmtUtils]: Spent 9.34s on a formula simplification. DAG size of input: 733 DAG size of output: 471 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:12:59,766 WARN L234 SmtUtils]: Spent 12.49s on a formula simplification. DAG size of input: 706 DAG size of output: 529 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:13,493 WARN L234 SmtUtils]: Spent 12.69s on a formula simplification. DAG size of input: 710 DAG size of output: 533 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:27,417 WARN L234 SmtUtils]: Spent 12.82s on a formula simplification. DAG size of input: 713 DAG size of output: 536 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:41,592 WARN L234 SmtUtils]: Spent 13.05s on a formula simplification. DAG size of input: 717 DAG size of output: 540 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:57,051 WARN L234 SmtUtils]: Spent 13.16s on a formula simplification. DAG size of input: 722 DAG size of output: 541 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:14:11,349 WARN L234 SmtUtils]: Spent 13.16s on a formula simplification. DAG size of input: 724 DAG size of output: 545 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:14:21,129 WARN L234 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 707 DAG size of output: 454 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:14:30,961 WARN L234 SmtUtils]: Spent 8.66s on a formula simplification. DAG size of input: 707 DAG size of output: 454 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:14:40,937 WARN L234 SmtUtils]: Spent 8.80s on a formula simplification. DAG size of input: 722 DAG size of output: 469 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:14:51,123 WARN L234 SmtUtils]: Spent 8.96s on a formula simplification. DAG size of input: 730 DAG size of output: 477 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:15:03,145 WARN L234 SmtUtils]: Spent 10.72s on a formula simplification. DAG size of input: 736 DAG size of output: 470 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:15:15,279 WARN L234 SmtUtils]: Spent 10.81s on a formula simplification. DAG size of input: 740 DAG size of output: 474 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:15:33,862 WARN L234 SmtUtils]: Spent 17.18s on a formula simplification. DAG size of input: 814 DAG size of output: 510 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:16:00,574 WARN L234 SmtUtils]: Spent 23.23s on a formula simplification. DAG size of input: 814 DAG size of output: 510 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:16:27,274 WARN L234 SmtUtils]: Spent 21.42s on a formula simplification. DAG size of input: 818 DAG size of output: 514 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:01,863 WARN L234 SmtUtils]: Spent 28.42s on a formula simplification. DAG size of input: 898 DAG size of output: 514 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:01,878 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '303161#(and (= ~__tmp_5374_0~0 0) (= ~__return_1470~0 0) (<= ~send3~0 127) (= ~__tmp_3301_0~0 0) (<= 0 ~id3~0) (= ~__return_1180~0 0) (<= (+ |ULTIMATE.start_main_~node1__m1~64#1| 1) 0) (= ~nomsg~0 ~p1_new~0) (<= (+ |ULTIMATE.start_main_~node3__m3~37#1| 1) 0) (= ~__return_3569~0 0) (= ~__return_1260~0 0) (= ~__return_1290~0 0) (= ~__return_1410~0 0) (<= ~st3~0 0) (= ~__return_5922~0 0) (<= (+ |ULTIMATE.start_main_~node3__m3~42#1| 1) 0) (= ~__return_1480~0 0) (= |ULTIMATE.start_main_~assert__arg~1#1| |ULTIMATE.start_main_~__tmp_2~0#1|) (<= 0 ~mode1~0) (<= |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~12#1| 127) (= ~__tmp_5338_0~0 1) (= ~__tmp_2769_0~0 0) (= ~__return_1450~0 0) (= ~__tmp_2079_0~0 0) (<= ~__return_102~0 1) (= ~__return_1240~0 0) (<= 0 (+ ~p1_old~0 1)) (= ~__tmp_3313_0~0 0) (= ~__return_3771~0 0) (= ~__tmp_3554_0~0 0) (= ~__return_2796~0 0) (= ~__return_1230~0 0) (= ~__return_1250~0 0) (= ~__return_3150~0 0) (= ~__return_1430~0 0) (<= 0 ~id1~0) (= ~__return_1350~0 0) (= ~__return_1270~0 0) (= ~__return_2094~0 0) (= ~__return_2859~0 0) (= ~__tmp_4308_0~0 0) (= ~__return_1160~0 0) (= ~__return_1130~0 0) (= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~52#1| ~__tmp_5188_0~0) (= |ULTIMATE.start_main_~check__tmp~69#1| 1) (= ~__tmp_4730_0~0 0) (= ~p2~0 0) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~35#1| 1)) (= ~__tmp_4109_0~0 0) (= ~__return_1120~0 0) (= ~__return_1150~0 0) (= ~__return_1490~0 0) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~62#1| 0) (= ~__tmp_3171_0~0 0) (= ~__return_3975~0 0) (= ~__tmp_2933_0~0 0) (= ~__return_1520~0 0) (= ~__tmp_3910_0~0 0) (= ~__return_1540~0 0) (<= 1 ~__return_102~0) (<= 0 ~mode3~0) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~43#1| 1)) (= ~__tmp_3960_0~0 0) (<= ~__tmp_2343_0~0 0) (= ~__tmp_2140_0~0 0) (= ~p3_new~0 ~nomsg~0) (= ~__return_3417~0 0) (<= ~__return_1190~0 1) (= (ite (= |ULTIMATE.start_main_~main__c1~0#1| 0) 0 1) |ULTIMATE.start_main_~__tmp_2~0#1|) (= ~__return_1200~0 0) (<= (+ |ULTIMATE.start_main_~node2__m2~46#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~46#1| 1)) (= |ULTIMATE.start_main_~main__c1~0#1| ~__return_5213~0) (= ~__return_4397~0 0) (= ~__tmp_3605_0~0 0) (= ~__tmp_3792_0~0 0) (= ~__return_1100~0 0) (<= ~mode2~0 1) (<= 0 |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~12#1|) (= ~__tmp_3402_0~0 0) (= ~__tmp_3255_0~0 0) (<= 1 ~__return_1190~0) (<= 0 ~st1~0) (<= 1 ~__tmp_5135_0~0) (= ~__tmp_2055_0~0 0) (or (not (<= (+ ~st3~0 ~st2~0 ~st1~0) 1)) (and (not (< ~r1~0 3)) (not (= (+ ~st3~0 ~st2~0 ~st1~0) 1)))) (= |ULTIMATE.start_main_~check__tmp~67#1| 1) (<= |ULTIMATE.start_main_~assert__arg~68#1| 1) (= ~__tmp_4159_0~0 0) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~45#1| 1)) (<= 0 ~st2~0) (= ~__tmp_2844_0~0 0) (= ~__tmp_1994_0~0 0) (= ~__return_1280~0 0) (<= ~mode3~0 1) (= ~__tmp_4075_0~0 0) (<= 1 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~63#1|) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~37#1| 1)) (<= 0 |ULTIMATE.start_main_~assert__arg~66#1|) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~42#1| 1)) (<= 0 ~send2~0) (<= (+ |ULTIMATE.start_main_~node2__m2~45#1| 1) 0) (= ~__return_2205~0 0) (<= (+ |ULTIMATE.start_main_~node2__m2~35#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~0#1| 1)) (= ~__tmp_2489_0~0 0) (= ~__return_1340~0 0) (<= 0 (+ ~p2_old~0 1)) (<= ~id1~0 127) (= ~nomsg~0 ~p2_new~0) (= ~__return_1420~0 0) (<= 0 ~__tmp_2319_0~0) (<= 0 ~__tmp_4274_0~0) (<= 1 ~__return_2358~0) (<= |ULTIMATE.start_main_~assert__arg~66#1| 1) (= ~__tmp_3099_0~0 0) (<= 0 ~__return_1170~0) (<= ~__tmp_2404_0~0 0) (<= ~send2~0 127) (<= ~__return_1390~0 0) (<= ~__return_2009~0 0) (= ~__return_3328~0 0) (<= ~__return_2358~0 1) (= ~__tmp_2984_0~0 0) (<= (+ |ULTIMATE.start_main_~node1__m1~0#1| 1) 0) (= ~__tmp_2972_0~0 0) (= ~__return_4533~0 0) (<= ~__tmp_1970_0~0 0) (<= 2 |ULTIMATE.start_main_~main__i2~0#1|) (= ~__tmp_2781_0~0 0) (= ~__tmp_3453_0~0 0) (<= 1 ~__tmp_5188_0~0) (<= ~__tmp_5103_0~0 0) (<= 0 ~__tmp_2404_0~0) (= ~__tmp_4534_0~0 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1|) (<= 0 ~__return_1320~0) (<= ~__return_1360~0 0) (<= (+ ~nomsg~0 1) 0) (<= ~mode1~0 1) (<= |ULTIMATE.start_main_~__tmp_67~0#1| 1) (<= 0 ~__return_3037~0) (<= ~st2~0 0) (<= ~__tmp_2680_0~0 0) (<= 0 ~__return_1360~0) (<= 0 ~__return_2443~0) (<= 0 ~__tmp_3183_0~0) (<= ~__return_2443~0 0) (<= 0 ~__return_1500~0) (= ~__tmp_2820_0~0 0) (= ~__return_1300~0 0) (= ~__tmp_4918_0~0 0) (= ~__tmp_4534_0~0 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~52#1|) (<= ~__tmp_3542_0~0 0) (<= 0 ~__tmp_3390_0~0) (<= 0 ~__return_1140~0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~64#1| 1)) (<= (+ |ULTIMATE.start_main_~node3__m3~43#1| 1) 0) (<= 0 ~__return_1210~0) (<= ~__return_4174~0 0) (= ~__return_1110~0 0) (<= ~__tmp_5226_0~0 0) (<= ~__return_1140~0 0) (= ~__return_1460~0 0) (= ~__tmp_3804_0~0 0) (= ~__return_1400~0 0) (<= 0 ~__tmp_5103_0~0) (= ~__return_2554~0 0) (<= 0 ~__tmp_2668_0~0) (= ~__return_3480~0 0) (<= ~__tmp_2832_0~0 0) (<= 0 |ULTIMATE.start_main_~__tmp_69~0#1|) (= ~__tmp_2600_0~0 0) (<= ~id3~0 127) (= ~__return_1530~0 0) (<= 0 ~__return_2009~0) (= ~__tmp_2428_0~0 0) (= ~__tmp_3465_0~0 0) (= ~__tmp_3441_0~0 0) (= ~__return_1440~0 0) (<= 0 ~id2~0) (= |#NULL.offset| 0) (<= 0 (+ ~nomsg~0 1)) (= ~__tmp_2921_0~0 0) (= ~__tmp_5012_0~0 0) (<= 0 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~62#1|) (= ~__return_1330~0 0) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~61#1| 0) (= ~__return_1370~0 0) (= ~__return_1220~0 0) (= ~__tmp_4560_0~0 0) (<= 0 ~__return_4088~0) (= ~__tmp_3289_0~0 0) (<= ~__tmp_2668_0~0 0) (<= ~__return_1500~0 0) (= ~__tmp_4824_0~0 0) (<= 0 ~mode2~0) (<= ~__return_1210~0 0) (<= ~__return_4287~0 0) (<= ~__tmp_4274_0~0 0) (= ~__tmp_3876_0~0 0) (<= 0 ~__tmp_3542_0~0) (<= ~id2~0 127) (<= 0 ~st3~0) (= ~__tmp_2692_0~0 0) (<= 0 ~__tmp_3720_0~0) (= (mod |ULTIMATE.start_main_~assert__arg~1#1| 256) 0) (= ~__return_3658~0 0) (<= |ULTIMATE.start_main_~__tmp_69~0#1| 1) (<= ~__tmp_3390_0~0 0) (<= 0 |ULTIMATE.start_main_~assert__arg~68#1|) (= ~__return_1310~0 0) (<= ~__tmp_2319_0~0 0) (<= |ULTIMATE.start_main_~init__tmp~0#1| 1) (<= ~__return_3037~0 0) (<= 0 ~__tmp_1970_0~0) (= ~p3~0 0) (<= ~__return_1170~0 0) (<= (+ ~p2_old~0 1) 0) (<= 0 ~__return_1390~0) (<= ~__return_4088~0 0) (= ~__return_1380~0 0) (= ~__return_2948~0 0) (<= (+ ~p1_old~0 1) 0) (<= 0 ~__tmp_2832_0~0) (<= 0 ~send3~0) (= ~p1~0 0) (<= 0 ~__tmp_2343_0~0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~__tmp_67~0#1|) (= ~__return_1510~0 0) (<= ~__tmp_3183_0~0 0) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~63#1| 1) (= ~__return_1550~0 0) (<= 0 ~__tmp_2680_0~0) (= ~__return_main~0 0) (<= 0 ~__return_4174~0) (<= 0 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~61#1|) (= ~__return_1560~0 0) (= ~__tmp_3593_0~0 0) (<= 0 ~__tmp_5226_0~0) (<= 0 ~__return_4287~0) (<= 1 |ULTIMATE.start_main_~init__tmp~0#1|) (<= 0 ~__tmp_5273_0~0) (= ~__return_1570~0 0) (<= ~__return_1320~0 0) (= ~__tmp_2251_0~0 0) (= |ULTIMATE.start_main_~check__tmp~58#1| ~__return_5213~0) (<= 0 ~__return_2707~0) (= |#NULL.base| 0) (<= ~__tmp_3720_0~0 0) (<= ~__return_2707~0 0))' at error location [2022-11-03 04:17:01,878 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:17:01,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:17:01,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 42 [2022-11-03 04:17:01,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317300112] [2022-11-03 04:17:01,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:17:01,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-03 04:17:01,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:17:01,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-03 04:17:01,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1270, Invalid=8037, Unknown=5, NotChecked=0, Total=9312 [2022-11-03 04:17:01,881 INFO L87 Difference]: Start difference. First operand 4798 states and 6056 transitions. Second operand has 42 states, 42 states have (on average 5.5) internal successors, (231), 42 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:17:47,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:17:47,664 INFO L93 Difference]: Finished difference Result 22876 states and 29443 transitions. [2022-11-03 04:17:47,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-11-03 04:17:47,665 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.5) internal successors, (231), 42 states have internal predecessors, (231), 0 states have call successors, (0), 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 [2022-11-03 04:17:47,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:17:47,689 INFO L225 Difference]: With dead ends: 22876 [2022-11-03 04:17:47,689 INFO L226 Difference]: Without dead ends: 20280 [2022-11-03 04:17:47,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 141 SyntacticMatches, 13 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19043 ImplicationChecksByTransitivity, 430.9s TimeCoverageRelationStatistics Valid=4743, Invalid=39142, Unknown=5, NotChecked=0, Total=43890 [2022-11-03 04:17:47,703 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 5520 mSDsluCounter, 4630 mSDsCounter, 0 mSdLazyCounter, 6249 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5520 SdHoareTripleChecker+Valid, 4921 SdHoareTripleChecker+Invalid, 6996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 6249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:17:47,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5520 Valid, 4921 Invalid, 6996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 6249 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-03 04:17:47,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20280 states. [2022-11-03 04:17:53,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20280 to 9245. [2022-11-03 04:17:53,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9245 states, 9244 states have (on average 1.2643877109476418) internal successors, (11688), 9244 states have internal predecessors, (11688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:17:53,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9245 states to 9245 states and 11688 transitions. [2022-11-03 04:17:53,902 INFO L78 Accepts]: Start accepts. Automaton has 9245 states and 11688 transitions. Word has length 78 [2022-11-03 04:17:53,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:17:53,903 INFO L495 AbstractCegarLoop]: Abstraction has 9245 states and 11688 transitions. [2022-11-03 04:17:53,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.5) internal successors, (231), 42 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:17:53,903 INFO L276 IsEmpty]: Start isEmpty. Operand 9245 states and 11688 transitions. [2022-11-03 04:17:53,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 04:17:53,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:17:53,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:17:53,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 04:17:54,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-03 04:17:54,121 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:17:54,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:17:54,121 INFO L85 PathProgramCache]: Analyzing trace with hash -898207466, now seen corresponding path program 1 times [2022-11-03 04:17:54,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:17:54,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460776955] [2022-11-03 04:17:54,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:17:54,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:17:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:17:54,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:17:54,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:17:54,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460776955] [2022-11-03 04:17:54,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460776955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:17:54,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:17:54,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:17:54,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216519603] [2022-11-03 04:17:54,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:17:54,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:17:54,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:17:54,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:17:54,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:17:54,239 INFO L87 Difference]: Start difference. First operand 9245 states and 11688 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2022-11-03 04:18:01,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:18:01,768 INFO L93 Difference]: Finished difference Result 13693 states and 17502 transitions. [2022-11-03 04:18:01,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:18:01,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 [2022-11-03 04:18:01,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:18:01,781 INFO L225 Difference]: With dead ends: 13693 [2022-11-03 04:18:01,781 INFO L226 Difference]: Without dead ends: 12114 [2022-11-03 04:18:01,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:18:01,786 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 254 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:18:01,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 628 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:18:01,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12114 states. [2022-11-03 04:18:09,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12114 to 11567. [2022-11-03 04:18:09,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11567 states, 11566 states have (on average 1.2579111187964724) internal successors, (14549), 11566 states have internal predecessors, (14549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:18:09,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11567 states to 11567 states and 14549 transitions. [2022-11-03 04:18:09,905 INFO L78 Accepts]: Start accepts. Automaton has 11567 states and 14549 transitions. Word has length 78 [2022-11-03 04:18:09,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:18:09,906 INFO L495 AbstractCegarLoop]: Abstraction has 11567 states and 14549 transitions. [2022-11-03 04:18:09,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2022-11-03 04:18:09,906 INFO L276 IsEmpty]: Start isEmpty. Operand 11567 states and 14549 transitions. [2022-11-03 04:18:09,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 04:18:09,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:18:09,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:18:09,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-03 04:18:09,910 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:18:09,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:18:09,910 INFO L85 PathProgramCache]: Analyzing trace with hash -729061492, now seen corresponding path program 1 times [2022-11-03 04:18:09,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:18:09,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083163453] [2022-11-03 04:18:09,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:09,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:18:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 04:18:10,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:18:10,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083163453] [2022-11-03 04:18:10,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083163453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:18:10,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:18:10,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:18:10,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959681817] [2022-11-03 04:18:10,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:18:10,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 04:18:10,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:18:10,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 04:18:10,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:18:10,185 INFO L87 Difference]: Start difference. First operand 11567 states and 14549 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:18:22,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:18:22,916 INFO L93 Difference]: Finished difference Result 18906 states and 23699 transitions. [2022-11-03 04:18:22,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 04:18:22,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-03 04:18:22,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:18:22,938 INFO L225 Difference]: With dead ends: 18906 [2022-11-03 04:18:22,938 INFO L226 Difference]: Without dead ends: 16055 [2022-11-03 04:18:22,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2022-11-03 04:18:22,943 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1312 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:18:22,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 1491 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 04:18:22,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16055 states. [2022-11-03 04:18:30,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16055 to 11550. [2022-11-03 04:18:30,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11550 states, 11549 states have (on average 1.2581175859381766) internal successors, (14530), 11549 states have internal predecessors, (14530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:18:30,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11550 states to 11550 states and 14530 transitions. [2022-11-03 04:18:30,622 INFO L78 Accepts]: Start accepts. Automaton has 11550 states and 14530 transitions. Word has length 80 [2022-11-03 04:18:30,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:18:30,622 INFO L495 AbstractCegarLoop]: Abstraction has 11550 states and 14530 transitions. [2022-11-03 04:18:30,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:18:30,622 INFO L276 IsEmpty]: Start isEmpty. Operand 11550 states and 14530 transitions. [2022-11-03 04:18:30,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 04:18:30,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:18:30,624 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:18:30,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-03 04:18:30,625 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:18:30,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:18:30,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1503101788, now seen corresponding path program 1 times [2022-11-03 04:18:30,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:18:30,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141068790] [2022-11-03 04:18:30,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:30,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:18:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:31,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:18:31,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:18:31,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141068790] [2022-11-03 04:18:31,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141068790] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:18:31,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725268976] [2022-11-03 04:18:31,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:31,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:18:31,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:18:31,667 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:18:31,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 04:18:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:31,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 04:18:31,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:18:33,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-03 04:18:33,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:18:33,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725268976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:18:33,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:18:33,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2022-11-03 04:18:33,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298429335] [2022-11-03 04:18:33,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:18:33,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 04:18:33,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:18:33,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 04:18:33,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2022-11-03 04:18:33,032 INFO L87 Difference]: Start difference. First operand 11550 states and 14530 transitions. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 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) [2022-11-03 04:18:43,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:18:43,594 INFO L93 Difference]: Finished difference Result 16908 states and 21303 transitions. [2022-11-03 04:18:43,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 04:18:43,594 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 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 81 [2022-11-03 04:18:43,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:18:43,614 INFO L225 Difference]: With dead ends: 16908 [2022-11-03 04:18:43,614 INFO L226 Difference]: Without dead ends: 14082 [2022-11-03 04:18:43,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=149, Invalid=907, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 04:18:43,619 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 1707 mSDsluCounter, 2740 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:18:43,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1707 Valid, 3232 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 04:18:43,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14082 states. [2022-11-03 04:18:51,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14082 to 11833. [2022-11-03 04:18:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11833 states, 11832 states have (on average 1.258367139959432) internal successors, (14889), 11832 states have internal predecessors, (14889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:18:51,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11833 states to 11833 states and 14889 transitions. [2022-11-03 04:18:51,568 INFO L78 Accepts]: Start accepts. Automaton has 11833 states and 14889 transitions. Word has length 81 [2022-11-03 04:18:51,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:18:51,568 INFO L495 AbstractCegarLoop]: Abstraction has 11833 states and 14889 transitions. [2022-11-03 04:18:51,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 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) [2022-11-03 04:18:51,569 INFO L276 IsEmpty]: Start isEmpty. Operand 11833 states and 14889 transitions. [2022-11-03 04:18:51,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 04:18:51,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:18:51,571 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:18:51,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:18:51,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:18:51,797 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-03 04:18:51,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:18:51,797 INFO L85 PathProgramCache]: Analyzing trace with hash -457716011, now seen corresponding path program 1 times [2022-11-03 04:18:51,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:18:51,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169011533] [2022-11-03 04:18:51,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:51,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:18:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:52,911 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:18:52,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:18:52,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169011533] [2022-11-03 04:18:52,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169011533] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:18:52,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792086993] [2022-11-03 04:18:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:52,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:18:52,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:18:52,913 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:18:52,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_644d9df1-60f8-4619-8cbe-9d75b3bd07d0/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 04:18:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:53,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-03 04:18:53,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:18:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:18:54,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:18:56,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:18:56,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792086993] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:18:56,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1859813986] [2022-11-03 04:18:56,946 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-03 04:18:56,947 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:18:56,947 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:18:56,947 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:18:56,948 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:18:57,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:18:57,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:18:57,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:18:57,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 04:18:57,251 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:18:57,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:18:57,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 04:19:01,146 INFO L180 IcfgInterpreter]: Interpretation finished