./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce67d33baf8e2191d295422ec2c8649be746cd4f4f75c5de99bdc3950e33cc6c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:17:36,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:17:36,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:17:36,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:17:36,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:17:36,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:17:36,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:17:36,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:17:36,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:17:36,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:17:36,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:17:36,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:17:36,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:17:36,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:17:36,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:17:36,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:17:36,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:17:36,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:17:36,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:17:36,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:17:36,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:17:36,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:17:36,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:17:36,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:17:36,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:17:36,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:17:36,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:17:36,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:17:36,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:17:36,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:17:36,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:17:36,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:17:36,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:17:36,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:17:36,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:17:36,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:17:36,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:17:36,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:17:36,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:17:36,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:17:36,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:17:36,701 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:17:36,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:17:36,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:17:36,750 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:17:36,750 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:17:36,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:17:36,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:17:36,759 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:17:36,759 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:17:36,759 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:17:36,759 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:17:36,760 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:17:36,761 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:17:36,761 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:17:36,761 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:17:36,761 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:17:36,762 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:17:36,762 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:17:36,762 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:17:36,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:17:36,763 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:17:36,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:17:36,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:17:36,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:17:36,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:17:36,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:17:36,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:17:36,766 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:17:36,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:17:36,766 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:17:36,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:17:36,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:17:36,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:17:36,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:17:36,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:17:36,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:17:36,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:17:36,768 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:17:36,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:17:36,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:17:36,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:17:36,769 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:17:36,769 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce67d33baf8e2191d295422ec2c8649be746cd4f4f75c5de99bdc3950e33cc6c [2021-11-25 18:17:37,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:17:37,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:17:37,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:17:37,051 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:17:37,051 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:17:37,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2021-11-25 18:17:37,160 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/data/3bd997585/bc22e4c442104a6685161afd3977754a/FLAG19a7c94fb [2021-11-25 18:17:37,617 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:17:37,617 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2021-11-25 18:17:37,626 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/data/3bd997585/bc22e4c442104a6685161afd3977754a/FLAG19a7c94fb [2021-11-25 18:17:37,977 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/data/3bd997585/bc22e4c442104a6685161afd3977754a [2021-11-25 18:17:37,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:17:37,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:17:37,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:17:37,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:17:37,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:17:37,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:17:37" (1/1) ... [2021-11-25 18:17:38,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a103b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:38, skipping insertion in model container [2021-11-25 18:17:38,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:17:37" (1/1) ... [2021-11-25 18:17:38,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:17:38,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:17:38,268 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1551,1564] [2021-11-25 18:17:38,273 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1758,1771] [2021-11-25 18:17:38,276 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2095,2108] [2021-11-25 18:17:38,278 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2296,2309] [2021-11-25 18:17:38,282 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2701,2714] [2021-11-25 18:17:38,284 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2902,2915] [2021-11-25 18:17:38,288 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3228,3241] [2021-11-25 18:17:38,290 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3435,3448] [2021-11-25 18:17:38,295 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3914,3927] [2021-11-25 18:17:38,297 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4118,4131] [2021-11-25 18:17:38,300 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4426,4439] [2021-11-25 18:17:38,302 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4630,4643] [2021-11-25 18:17:38,305 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4995,5008] [2021-11-25 18:17:38,308 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5198,5211] [2021-11-25 18:17:38,310 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5412,5425] [2021-11-25 18:17:38,312 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5616,5629] [2021-11-25 18:17:38,316 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6138,6151] [2021-11-25 18:17:38,318 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6342,6355] [2021-11-25 18:17:38,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:17:38,331 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:17:38,349 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1551,1564] [2021-11-25 18:17:38,351 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1758,1771] [2021-11-25 18:17:38,353 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2095,2108] [2021-11-25 18:17:38,355 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2296,2309] [2021-11-25 18:17:38,357 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2701,2714] [2021-11-25 18:17:38,359 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2902,2915] [2021-11-25 18:17:38,362 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3228,3241] [2021-11-25 18:17:38,369 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3435,3448] [2021-11-25 18:17:38,372 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3914,3927] [2021-11-25 18:17:38,383 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4118,4131] [2021-11-25 18:17:38,386 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4426,4439] [2021-11-25 18:17:38,388 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4630,4643] [2021-11-25 18:17:38,392 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4995,5008] [2021-11-25 18:17:38,396 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5198,5211] [2021-11-25 18:17:38,404 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5412,5425] [2021-11-25 18:17:38,405 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5616,5629] [2021-11-25 18:17:38,408 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6138,6151] [2021-11-25 18:17:38,410 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_2fe36307-76df-42f9-90fa-58d3e502cdde/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6342,6355] [2021-11-25 18:17:38,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:17:38,440 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:17:38,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:38 WrapperNode [2021-11-25 18:17:38,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:17:38,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:17:38,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:17:38,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:17:38,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:38" (1/1) ... [2021-11-25 18:17:38,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:38" (1/1) ... [2021-11-25 18:17:38,512 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 254 [2021-11-25 18:17:38,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:17:38,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:17:38,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:17:38,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:17:38,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:38" (1/1) ... [2021-11-25 18:17:38,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:38" (1/1) ... [2021-11-25 18:17:38,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:38" (1/1) ... [2021-11-25 18:17:38,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:38" (1/1) ... [2021-11-25 18:17:38,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:38" (1/1) ... [2021-11-25 18:17:38,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:38" (1/1) ... [2021-11-25 18:17:38,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:38" (1/1) ... [2021-11-25 18:17:38,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:17:38,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:17:38,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:17:38,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:17:38,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:38" (1/1) ... [2021-11-25 18:17:38,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:17:38,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:17:38,631 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:17:38,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:17:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:17:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:17:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:17:38,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:17:38,811 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:17:38,813 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:17:39,122 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:17:39,142 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:17:39,142 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 18:17:39,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:17:39 BoogieIcfgContainer [2021-11-25 18:17:39,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:17:39,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:17:39,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:17:39,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:17:39,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:17:37" (1/3) ... [2021-11-25 18:17:39,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2364f68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:17:39, skipping insertion in model container [2021-11-25 18:17:39,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:17:38" (2/3) ... [2021-11-25 18:17:39,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2364f68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:17:39, skipping insertion in model container [2021-11-25 18:17:39,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:17:39" (3/3) ... [2021-11-25 18:17:39,156 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i.v+cfa-reducer.c [2021-11-25 18:17:39,162 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:17:39,163 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-11-25 18:17:39,219 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:17:39,228 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:17:39,229 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-11-25 18:17:39,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 61 states have (on average 1.9180327868852458) internal successors, (117), 79 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:39,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 18:17:39,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:39,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:39,282 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:39,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:39,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1091334804, now seen corresponding path program 1 times [2021-11-25 18:17:39,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:39,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342332412] [2021-11-25 18:17:39,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:39,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:39,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:39,523 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:39,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342332412] [2021-11-25 18:17:39,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342332412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:39,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:39,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:17:39,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472677537] [2021-11-25 18:17:39,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:39,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:17:39,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:39,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:17:39,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:17:39,585 INFO L87 Difference]: Start difference. First operand has 80 states, 61 states have (on average 1.9180327868852458) internal successors, (117), 79 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:39,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:39,638 INFO L93 Difference]: Finished difference Result 84 states and 119 transitions. [2021-11-25 18:17:39,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:17:39,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-11-25 18:17:39,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:39,652 INFO L225 Difference]: With dead ends: 84 [2021-11-25 18:17:39,652 INFO L226 Difference]: Without dead ends: 75 [2021-11-25 18:17:39,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:17:39,660 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 74 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:39,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 115 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:17:39,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-25 18:17:39,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-11-25 18:17:39,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 74 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2021-11-25 18:17:39,705 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 14 [2021-11-25 18:17:39,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:39,706 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2021-11-25 18:17:39,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:39,707 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2021-11-25 18:17:39,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 18:17:39,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:39,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:39,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:17:39,708 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:39,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:39,710 INFO L85 PathProgramCache]: Analyzing trace with hash 528363536, now seen corresponding path program 1 times [2021-11-25 18:17:39,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:39,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963687608] [2021-11-25 18:17:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:39,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:39,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:39,887 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:39,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963687608] [2021-11-25 18:17:39,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963687608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:39,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:39,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:17:39,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109575959] [2021-11-25 18:17:39,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:39,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:17:39,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:39,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:17:39,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:17:39,891 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:40,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:40,006 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2021-11-25 18:17:40,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:17:40,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-25 18:17:40,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:40,009 INFO L225 Difference]: With dead ends: 75 [2021-11-25 18:17:40,009 INFO L226 Difference]: Without dead ends: 73 [2021-11-25 18:17:40,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:17:40,011 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 184 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:40,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 81 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:17:40,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-25 18:17:40,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-11-25 18:17:40,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 72 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:40,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2021-11-25 18:17:40,024 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 15 [2021-11-25 18:17:40,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:40,024 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2021-11-25 18:17:40,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:40,025 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2021-11-25 18:17:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 18:17:40,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:40,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:40,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:17:40,026 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:40,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:40,027 INFO L85 PathProgramCache]: Analyzing trace with hash 951344371, now seen corresponding path program 1 times [2021-11-25 18:17:40,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:40,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051212967] [2021-11-25 18:17:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:40,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:40,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:40,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051212967] [2021-11-25 18:17:40,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051212967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:40,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:40,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:17:40,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029371170] [2021-11-25 18:17:40,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:40,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:17:40,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:40,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:17:40,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:17:40,109 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:40,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:40,266 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2021-11-25 18:17:40,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:17:40,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-25 18:17:40,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:40,269 INFO L225 Difference]: With dead ends: 96 [2021-11-25 18:17:40,270 INFO L226 Difference]: Without dead ends: 94 [2021-11-25 18:17:40,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:17:40,272 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 110 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:40,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 116 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:17:40,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-25 18:17:40,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 71. [2021-11-25 18:17:40,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 70 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) [2021-11-25 18:17:40,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2021-11-25 18:17:40,285 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 17 [2021-11-25 18:17:40,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:40,286 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2021-11-25 18:17:40,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:40,286 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2021-11-25 18:17:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 18:17:40,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:40,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:40,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:17:40,288 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:40,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:40,289 INFO L85 PathProgramCache]: Analyzing trace with hash -573091462, now seen corresponding path program 1 times [2021-11-25 18:17:40,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:40,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703282200] [2021-11-25 18:17:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:40,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:40,383 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:40,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703282200] [2021-11-25 18:17:40,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703282200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:40,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:40,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:17:40,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698387571] [2021-11-25 18:17:40,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:40,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:17:40,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:40,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:17:40,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:17:40,391 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:40,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:40,477 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2021-11-25 18:17:40,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:17:40,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-25 18:17:40,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:40,479 INFO L225 Difference]: With dead ends: 71 [2021-11-25 18:17:40,479 INFO L226 Difference]: Without dead ends: 69 [2021-11-25 18:17:40,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:17:40,482 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 165 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:40,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 72 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:17:40,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-25 18:17:40,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-25 18:17:40,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 55 states have (on average 1.309090909090909) internal successors, (72), 68 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:40,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2021-11-25 18:17:40,495 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 18 [2021-11-25 18:17:40,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:40,496 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2021-11-25 18:17:40,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:40,497 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2021-11-25 18:17:40,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 18:17:40,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:40,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:40,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:17:40,499 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:40,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:40,500 INFO L85 PathProgramCache]: Analyzing trace with hash -468627622, now seen corresponding path program 1 times [2021-11-25 18:17:40,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:40,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029160640] [2021-11-25 18:17:40,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:40,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:40,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:40,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029160640] [2021-11-25 18:17:40,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029160640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:40,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:40,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:17:40,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493607737] [2021-11-25 18:17:40,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:40,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:17:40,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:40,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:17:40,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:17:40,651 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:40,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:40,862 INFO L93 Difference]: Finished difference Result 136 states and 142 transitions. [2021-11-25 18:17:40,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:17:40,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-25 18:17:40,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:40,866 INFO L225 Difference]: With dead ends: 136 [2021-11-25 18:17:40,869 INFO L226 Difference]: Without dead ends: 134 [2021-11-25 18:17:40,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:17:40,872 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 128 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:40,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 290 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:17:40,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-25 18:17:40,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2021-11-25 18:17:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 71 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2021-11-25 18:17:40,890 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 21 [2021-11-25 18:17:40,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:40,890 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2021-11-25 18:17:40,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:40,891 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2021-11-25 18:17:40,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 18:17:40,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:40,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:40,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:17:40,893 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:40,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:40,894 INFO L85 PathProgramCache]: Analyzing trace with hash -464459857, now seen corresponding path program 1 times [2021-11-25 18:17:40,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:40,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910653040] [2021-11-25 18:17:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:40,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:40,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:40,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:40,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910653040] [2021-11-25 18:17:40,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910653040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:40,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:40,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:17:40,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27875373] [2021-11-25 18:17:40,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:40,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:17:40,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:40,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:17:41,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:17:41,000 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:41,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:41,174 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2021-11-25 18:17:41,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:17:41,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-25 18:17:41,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:41,178 INFO L225 Difference]: With dead ends: 103 [2021-11-25 18:17:41,178 INFO L226 Difference]: Without dead ends: 101 [2021-11-25 18:17:41,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:17:41,184 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 117 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:41,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 166 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:17:41,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-25 18:17:41,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 74. [2021-11-25 18:17:41,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 73 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:41,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2021-11-25 18:17:41,208 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 21 [2021-11-25 18:17:41,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:41,215 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2021-11-25 18:17:41,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:41,216 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2021-11-25 18:17:41,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 18:17:41,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:41,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:41,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:17:41,223 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:41,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:41,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1642550139, now seen corresponding path program 1 times [2021-11-25 18:17:41,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:41,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716298030] [2021-11-25 18:17:41,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:41,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:41,351 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:41,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716298030] [2021-11-25 18:17:41,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716298030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:41,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:41,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:17:41,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436452169] [2021-11-25 18:17:41,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:41,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:17:41,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:41,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:17:41,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:17:41,355 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:41,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:41,499 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2021-11-25 18:17:41,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:17:41,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-11-25 18:17:41,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:41,502 INFO L225 Difference]: With dead ends: 116 [2021-11-25 18:17:41,502 INFO L226 Difference]: Without dead ends: 114 [2021-11-25 18:17:41,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:17:41,504 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 148 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:41,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 149 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:17:41,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-25 18:17:41,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 72. [2021-11-25 18:17:41,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 59 states have (on average 1.305084745762712) internal successors, (77), 71 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:41,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2021-11-25 18:17:41,516 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 22 [2021-11-25 18:17:41,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:41,516 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2021-11-25 18:17:41,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2021-11-25 18:17:41,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 18:17:41,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:41,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:41,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:17:41,529 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:41,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:41,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1513349547, now seen corresponding path program 1 times [2021-11-25 18:17:41,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:41,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566551094] [2021-11-25 18:17:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:41,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:41,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:41,649 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:41,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566551094] [2021-11-25 18:17:41,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566551094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:41,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:41,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:17:41,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266893395] [2021-11-25 18:17:41,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:41,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:17:41,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:41,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:17:41,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:17:41,652 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:41,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:41,736 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2021-11-25 18:17:41,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:17:41,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-11-25 18:17:41,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:41,740 INFO L225 Difference]: With dead ends: 72 [2021-11-25 18:17:41,741 INFO L226 Difference]: Without dead ends: 70 [2021-11-25 18:17:41,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:17:41,745 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 132 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:41,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 89 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:17:41,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-25 18:17:41,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-11-25 18:17:41,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 58 states have (on average 1.293103448275862) internal successors, (75), 69 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:41,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2021-11-25 18:17:41,769 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 22 [2021-11-25 18:17:41,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:41,770 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2021-11-25 18:17:41,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:41,770 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2021-11-25 18:17:41,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 18:17:41,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:41,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:41,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:17:41,772 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:41,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:41,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1665131132, now seen corresponding path program 1 times [2021-11-25 18:17:41,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:41,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672641732] [2021-11-25 18:17:41,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:41,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:41,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:41,871 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:41,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672641732] [2021-11-25 18:17:41,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672641732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:41,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:41,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:17:41,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245054613] [2021-11-25 18:17:41,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:41,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:17:41,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:41,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:17:41,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:17:41,873 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:41,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:41,917 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2021-11-25 18:17:41,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:17:41,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-11-25 18:17:41,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:41,918 INFO L225 Difference]: With dead ends: 110 [2021-11-25 18:17:41,918 INFO L226 Difference]: Without dead ends: 70 [2021-11-25 18:17:41,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:17:41,922 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:41,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:17:41,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-25 18:17:41,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-11-25 18:17:41,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 69 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) [2021-11-25 18:17:41,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2021-11-25 18:17:41,940 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 24 [2021-11-25 18:17:41,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:41,941 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2021-11-25 18:17:41,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:41,941 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2021-11-25 18:17:41,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 18:17:41,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:41,946 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:41,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:17:41,948 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:41,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:41,950 INFO L85 PathProgramCache]: Analyzing trace with hash -649021887, now seen corresponding path program 1 times [2021-11-25 18:17:41,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:41,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971699705] [2021-11-25 18:17:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:41,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:17:42,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:42,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971699705] [2021-11-25 18:17:42,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971699705] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:17:42,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277834790] [2021-11-25 18:17:42,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:42,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:17:42,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:17:42,072 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:17:42,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:17:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:42,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:17:42,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:17:42,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:17:42,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:17:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:17:42,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277834790] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:17:42,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1990565515] [2021-11-25 18:17:42,401 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-25 18:17:42,401 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:17:42,407 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:17:42,413 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:17:42,414 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:17:44,119 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:17:47,737 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1920#(and (<= 0 (+ |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~main__tokenlen~0#1|) (<= 0 |ULTIMATE.start_main_~__tmp_3~0#1|) (<= 0 |ULTIMATE.start_main_~__tmp_17~0#1|) (<= |ULTIMATE.start_main_~main__urilen~0#1| 1000000) (<= 0 |ULTIMATE.start_main_~main__cp~0#1|) (<= |ULTIMATE.start_main_~main__tokenlen~0#1| 1000000) (<= |ULTIMATE.start_main_~__tmp_3~0#1| 1) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1|) (<= 0 |ULTIMATE.start_main_~__tmp_4~0#1|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~3#1| 1) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~1#1| 1) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~16#1| 0) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~1#1|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1) (<= 0 |ULTIMATE.start_main_~main__scheme~0#1|) (<= |ULTIMATE.start_main_~main__scheme~0#1| 999999) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 1) (<= 1 |ULTIMATE.start_main_~main__urilen~0#1|) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 2147483647) (<= |ULTIMATE.start_main_~__tmp_1~0#1| 1) (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1|) (= |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 0) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~3#1|) (<= |ULTIMATE.start_main_~__tmp_17~0#1| 1) (<= |ULTIMATE.start_main_~__tmp_4~0#1| 1) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= 0 |#StackHeapBarrier|) (= ~__return_main~0 0) (= ~__return_375~0 0) (= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~__tmp_2~0#1|))' at error location [2021-11-25 18:17:47,738 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:17:47,738 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:17:47,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2021-11-25 18:17:47,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220861967] [2021-11-25 18:17:47,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:17:47,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:17:47,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:47,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:17:47,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2021-11-25 18:17:47,741 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:47,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:47,858 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2021-11-25 18:17:47,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:17:47,859 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 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 25 [2021-11-25 18:17:47,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:47,860 INFO L225 Difference]: With dead ends: 110 [2021-11-25 18:17:47,860 INFO L226 Difference]: Without dead ends: 108 [2021-11-25 18:17:47,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2021-11-25 18:17:47,862 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 89 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:47,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 173 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:17:47,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-25 18:17:47,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 67. [2021-11-25 18:17:47,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 56 states have (on average 1.25) internal successors, (70), 66 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:47,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-11-25 18:17:47,870 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 25 [2021-11-25 18:17:47,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:47,870 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-11-25 18:17:47,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:47,870 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-11-25 18:17:47,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-25 18:17:47,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:47,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:47,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:17:48,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 18:17:48,105 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:48,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:48,106 INFO L85 PathProgramCache]: Analyzing trace with hash 535752363, now seen corresponding path program 1 times [2021-11-25 18:17:48,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:48,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436709913] [2021-11-25 18:17:48,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:48,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:48,206 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:48,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436709913] [2021-11-25 18:17:48,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436709913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:48,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:48,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:17:48,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981431777] [2021-11-25 18:17:48,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:48,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:17:48,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:48,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:17:48,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:17:48,210 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:48,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:48,267 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2021-11-25 18:17:48,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:17:48,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-11-25 18:17:48,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:48,269 INFO L225 Difference]: With dead ends: 68 [2021-11-25 18:17:48,269 INFO L226 Difference]: Without dead ends: 66 [2021-11-25 18:17:48,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:17:48,270 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 77 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:48,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 75 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:17:48,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-25 18:17:48,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2021-11-25 18:17:48,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 64 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:48,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2021-11-25 18:17:48,276 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 25 [2021-11-25 18:17:48,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:48,277 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2021-11-25 18:17:48,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:48,277 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2021-11-25 18:17:48,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 18:17:48,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:48,279 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 18:17:48,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:17:48,279 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:48,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:48,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1351309273, now seen corresponding path program 1 times [2021-11-25 18:17:48,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:48,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701758147] [2021-11-25 18:17:48,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:48,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:48,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:17:48,379 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:48,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701758147] [2021-11-25 18:17:48,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701758147] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:17:48,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876241571] [2021-11-25 18:17:48,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:48,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:17:48,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:17:48,385 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:17:48,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:17:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:48,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:17:48,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:17:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:17:48,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:17:48,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:17:48,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876241571] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:17:48,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1737066697] [2021-11-25 18:17:48,712 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-11-25 18:17:48,713 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:17:48,713 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:17:48,713 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:17:48,714 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:17:50,121 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:17:53,750 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2449#(and (<= 0 (+ |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~main__tokenlen~0#1|) (<= 0 |ULTIMATE.start_main_~__tmp_3~0#1|) (<= |ULTIMATE.start_main_~main__urilen~0#1| 1000000) (<= |ULTIMATE.start_main_~main__tokenlen~0#1| 1000000) (<= |ULTIMATE.start_main_~__tmp_3~0#1| 1) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1|) (<= 0 |ULTIMATE.start_main_~__tmp_4~0#1|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~3#1| 1) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~1#1| 1) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~1#1|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1) (<= 0 |ULTIMATE.start_main_~main__scheme~0#1|) (<= |ULTIMATE.start_main_~main__scheme~0#1| 999999) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 1) (<= 1 |ULTIMATE.start_main_~main__urilen~0#1|) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 2147483648)) (<= |ULTIMATE.start_main_~__tmp_1~0#1| 1) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~4#1| 0) (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1|) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~3#1|) (<= |ULTIMATE.start_main_~__tmp_4~0#1| 1) (= (ite (< |ULTIMATE.start_main_~main__cp~0#1| |ULTIMATE.start_main_~main__urilen~0#1|) 1 0) |ULTIMATE.start_main_~__tmp_5~0#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~4#1| |ULTIMATE.start_main_~__tmp_5~0#1|) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= 0 |#StackHeapBarrier|) (= ~__return_main~0 0) (= ~__return_375~0 0) (= |#NULL.base| 0) (not (= |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 0)) (<= 0 |ULTIMATE.start_main_~__tmp_2~0#1|))' at error location [2021-11-25 18:17:53,750 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:17:53,751 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:17:53,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2021-11-25 18:17:53,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765082967] [2021-11-25 18:17:53,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:17:53,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:17:53,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:53,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:17:53,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=625, Unknown=0, NotChecked=0, Total=812 [2021-11-25 18:17:53,753 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:53,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:53,849 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2021-11-25 18:17:53,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:17:53,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 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 26 [2021-11-25 18:17:53,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:53,850 INFO L225 Difference]: With dead ends: 66 [2021-11-25 18:17:53,850 INFO L226 Difference]: Without dead ends: 64 [2021-11-25 18:17:53,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2021-11-25 18:17:53,853 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 114 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:53,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 70 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:17:53,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-25 18:17:53,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2021-11-25 18:17:53,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.22) internal successors, (61), 58 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2021-11-25 18:17:53,859 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 26 [2021-11-25 18:17:53,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:53,860 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2021-11-25 18:17:53,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:53,869 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2021-11-25 18:17:53,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 18:17:53,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:53,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:53,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:17:54,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:17:54,085 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:54,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:54,086 INFO L85 PathProgramCache]: Analyzing trace with hash -571541778, now seen corresponding path program 1 times [2021-11-25 18:17:54,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:54,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529059139] [2021-11-25 18:17:54,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:54,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:54,126 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:54,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529059139] [2021-11-25 18:17:54,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529059139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:54,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:54,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:17:54,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128280987] [2021-11-25 18:17:54,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:54,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:17:54,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:54,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:17:54,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:17:54,129 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:54,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:54,197 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2021-11-25 18:17:54,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:17:54,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-11-25 18:17:54,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:54,199 INFO L225 Difference]: With dead ends: 59 [2021-11-25 18:17:54,199 INFO L226 Difference]: Without dead ends: 57 [2021-11-25 18:17:54,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:17:54,201 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 108 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:54,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 63 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:17:54,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-25 18:17:54,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-25 18:17:54,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 56 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:54,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2021-11-25 18:17:54,207 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 26 [2021-11-25 18:17:54,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:54,208 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2021-11-25 18:17:54,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2021-11-25 18:17:54,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-25 18:17:54,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:54,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:54,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 18:17:54,210 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:54,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:54,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1546681483, now seen corresponding path program 1 times [2021-11-25 18:17:54,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:54,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482967310] [2021-11-25 18:17:54,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:54,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:54,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:54,282 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:54,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482967310] [2021-11-25 18:17:54,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482967310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:54,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:54,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:17:54,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546330204] [2021-11-25 18:17:54,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:54,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:17:54,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:54,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:17:54,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:17:54,287 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:54,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:54,339 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2021-11-25 18:17:54,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:17:54,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-11-25 18:17:54,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:54,341 INFO L225 Difference]: With dead ends: 58 [2021-11-25 18:17:54,341 INFO L226 Difference]: Without dead ends: 56 [2021-11-25 18:17:54,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:17:54,342 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 94 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:54,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 61 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:17:54,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-25 18:17:54,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2021-11-25 18:17:54,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 48 states have (on average 1.1875) internal successors, (57), 54 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2021-11-25 18:17:54,347 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 29 [2021-11-25 18:17:54,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:54,347 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2021-11-25 18:17:54,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:54,348 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2021-11-25 18:17:54,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-25 18:17:54,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:54,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:54,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 18:17:54,349 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:54,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:54,350 INFO L85 PathProgramCache]: Analyzing trace with hash -702481542, now seen corresponding path program 1 times [2021-11-25 18:17:54,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:54,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320497884] [2021-11-25 18:17:54,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:54,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:54,401 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:54,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320497884] [2021-11-25 18:17:54,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320497884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:54,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:54,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:17:54,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910612590] [2021-11-25 18:17:54,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:54,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:17:54,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:54,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:17:54,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:17:54,404 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:54,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:54,497 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2021-11-25 18:17:54,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:17:54,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-11-25 18:17:54,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:54,499 INFO L225 Difference]: With dead ends: 66 [2021-11-25 18:17:54,499 INFO L226 Difference]: Without dead ends: 64 [2021-11-25 18:17:54,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:17:54,500 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 101 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:54,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 80 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:17:54,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-25 18:17:54,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 53. [2021-11-25 18:17:54,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 52 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) [2021-11-25 18:17:54,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2021-11-25 18:17:54,505 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 30 [2021-11-25 18:17:54,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:54,506 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2021-11-25 18:17:54,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:54,506 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2021-11-25 18:17:54,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-25 18:17:54,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:54,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:54,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 18:17:54,508 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:54,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:54,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1752072319, now seen corresponding path program 1 times [2021-11-25 18:17:54,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:54,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794328245] [2021-11-25 18:17:54,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:54,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:54,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:54,571 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:54,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794328245] [2021-11-25 18:17:54,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794328245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:54,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:54,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:17:54,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626151009] [2021-11-25 18:17:54,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:54,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:17:54,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:54,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:17:54,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:17:54,574 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:54,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:54,683 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2021-11-25 18:17:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:17:54,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-11-25 18:17:54,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:54,685 INFO L225 Difference]: With dead ends: 86 [2021-11-25 18:17:54,685 INFO L226 Difference]: Without dead ends: 84 [2021-11-25 18:17:54,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:17:54,686 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 93 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:54,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 112 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:17:54,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-25 18:17:54,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 56. [2021-11-25 18:17:54,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.16) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:54,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2021-11-25 18:17:54,691 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 33 [2021-11-25 18:17:54,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:54,692 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2021-11-25 18:17:54,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:54,692 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2021-11-25 18:17:54,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 18:17:54,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:54,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:54,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 18:17:54,694 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:54,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:54,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1520328763, now seen corresponding path program 1 times [2021-11-25 18:17:54,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:54,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817530396] [2021-11-25 18:17:54,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:54,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:54,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:54,755 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:54,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817530396] [2021-11-25 18:17:54,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817530396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:54,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:54,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:17:54,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750713487] [2021-11-25 18:17:54,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:54,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:17:54,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:54,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:17:54,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:17:54,759 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:54,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:54,840 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2021-11-25 18:17:54,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:17:54,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-25 18:17:54,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:54,842 INFO L225 Difference]: With dead ends: 56 [2021-11-25 18:17:54,842 INFO L226 Difference]: Without dead ends: 54 [2021-11-25 18:17:54,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:17:54,843 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 58 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:54,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 104 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:17:54,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-25 18:17:54,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-11-25 18:17:54,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 53 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) [2021-11-25 18:17:54,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2021-11-25 18:17:54,848 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 34 [2021-11-25 18:17:54,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:54,849 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2021-11-25 18:17:54,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:54,849 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2021-11-25 18:17:54,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 18:17:54,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:54,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:54,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 18:17:54,851 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:54,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:54,851 INFO L85 PathProgramCache]: Analyzing trace with hash -746930072, now seen corresponding path program 1 times [2021-11-25 18:17:54,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:54,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666563473] [2021-11-25 18:17:54,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:54,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:54,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:54,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666563473] [2021-11-25 18:17:54,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666563473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:54,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:54,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:17:54,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250037542] [2021-11-25 18:17:54,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:54,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:17:54,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:54,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:17:54,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:17:54,906 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:54,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:54,930 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2021-11-25 18:17:54,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:17:54,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-25 18:17:54,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:54,932 INFO L225 Difference]: With dead ends: 65 [2021-11-25 18:17:54,932 INFO L226 Difference]: Without dead ends: 63 [2021-11-25 18:17:54,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:17:54,936 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 23 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:54,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 138 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:17:54,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-25 18:17:54,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2021-11-25 18:17:54,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 48 states have (on average 1.125) internal successors, (54), 51 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) [2021-11-25 18:17:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2021-11-25 18:17:54,942 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 36 [2021-11-25 18:17:54,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:54,942 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2021-11-25 18:17:54,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:54,943 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2021-11-25 18:17:54,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 18:17:54,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:54,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:54,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 18:17:54,944 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:54,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:54,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1679991539, now seen corresponding path program 1 times [2021-11-25 18:17:54,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:54,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406919207] [2021-11-25 18:17:54,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:54,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:54,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:54,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:54,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406919207] [2021-11-25 18:17:54,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406919207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:54,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:54,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:17:54,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385076833] [2021-11-25 18:17:54,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:54,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:17:54,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:54,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:17:54,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:17:54,999 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:55,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:55,027 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2021-11-25 18:17:55,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:17:55,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-11-25 18:17:55,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:55,029 INFO L225 Difference]: With dead ends: 61 [2021-11-25 18:17:55,029 INFO L226 Difference]: Without dead ends: 59 [2021-11-25 18:17:55,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:17:55,030 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 35 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:55,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 167 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:17:55,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-25 18:17:55,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2021-11-25 18:17:55,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 49 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:55,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2021-11-25 18:17:55,035 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 37 [2021-11-25 18:17:55,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:55,036 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2021-11-25 18:17:55,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:55,036 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2021-11-25 18:17:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 18:17:55,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:55,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:55,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 18:17:55,038 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:55,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:55,038 INFO L85 PathProgramCache]: Analyzing trace with hash -540125937, now seen corresponding path program 1 times [2021-11-25 18:17:55,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:55,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549975435] [2021-11-25 18:17:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:55,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:55,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:55,122 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:55,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549975435] [2021-11-25 18:17:55,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549975435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:55,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:55,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:17:55,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932167550] [2021-11-25 18:17:55,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:55,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:17:55,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:55,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:17:55,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:17:55,125 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:55,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:55,241 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2021-11-25 18:17:55,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:17:55,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-11-25 18:17:55,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:55,242 INFO L225 Difference]: With dead ends: 83 [2021-11-25 18:17:55,242 INFO L226 Difference]: Without dead ends: 81 [2021-11-25 18:17:55,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:17:55,244 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 52 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:55,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 120 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:17:55,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-25 18:17:55,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 55. [2021-11-25 18:17:55,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 54 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:55,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2021-11-25 18:17:55,254 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 38 [2021-11-25 18:17:55,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:55,254 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2021-11-25 18:17:55,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2021-11-25 18:17:55,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-25 18:17:55,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:55,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:17:55,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 18:17:55,256 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:55,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:55,257 INFO L85 PathProgramCache]: Analyzing trace with hash 435969364, now seen corresponding path program 1 times [2021-11-25 18:17:55,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:55,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790138658] [2021-11-25 18:17:55,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:55,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:55,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:55,308 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:55,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790138658] [2021-11-25 18:17:55,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790138658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:17:55,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:17:55,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:17:55,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886427831] [2021-11-25 18:17:55,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:17:55,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:17:55,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:17:55,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:17:55,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:17:55,314 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:55,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:17:55,391 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-11-25 18:17:55,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:17:55,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-11-25 18:17:55,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:17:55,392 INFO L225 Difference]: With dead ends: 68 [2021-11-25 18:17:55,393 INFO L226 Difference]: Without dead ends: 66 [2021-11-25 18:17:55,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:17:55,394 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 35 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:17:55,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 114 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:17:55,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-25 18:17:55,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2021-11-25 18:17:55,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 52 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) [2021-11-25 18:17:55,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2021-11-25 18:17:55,398 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 39 [2021-11-25 18:17:55,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:17:55,398 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2021-11-25 18:17:55,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:17:55,399 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2021-11-25 18:17:55,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-25 18:17:55,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:17:55,399 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 18:17:55,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 18:17:55,400 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:17:55,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:17:55,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1372292551, now seen corresponding path program 1 times [2021-11-25 18:17:55,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:17:55,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960962365] [2021-11-25 18:17:55,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:55,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:17:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:55,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:17:55,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960962365] [2021-11-25 18:17:55,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960962365] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:17:55,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097360804] [2021-11-25 18:17:55,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:17:55,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:17:55,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:17:55,458 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:17:55,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:17:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:17:55,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 18:17:55,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:17:55,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:55,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:17:55,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:17:55,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097360804] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:17:55,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [470667189] [2021-11-25 18:17:55,734 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2021-11-25 18:17:55,735 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:17:55,735 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:17:55,735 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:17:55,736 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:17:57,845 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:18:07,687 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4117#(and (<= 0 |ULTIMATE.start_main_~__tmp_5~0#1|) (<= |ULTIMATE.start_main_~__tmp_9~0#1| 1) (<= |ULTIMATE.start_main_~__tmp_11~0#1| 1) (<= |ULTIMATE.start_main_~__tmp_6~0#1| 1) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~10#1| 0) (<= 0 (+ |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 2147483648)) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~9#1| 1) (<= 0 |ULTIMATE.start_main_~__tmp_7~0#1|) (<= 0 (+ |ULTIMATE.start_main_~main____CPAchecker_TMP_2~0#1| 2147483648)) (<= |ULTIMATE.start_main_~main__scheme~0#1| 1000000) (<= 0 |ULTIMATE.start_main_~__tmp_3~0#1|) (<= |ULTIMATE.start_main_~main__urilen~0#1| 1000000) (<= |ULTIMATE.start_main_~main__tokenlen~0#1| 1000000) (<= |ULTIMATE.start_main_~__tmp_3~0#1| 1) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1|) (<= 0 |ULTIMATE.start_main_~__tmp_4~0#1|) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~4#1|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~3#1| 1) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~1#1| 1) (<= |ULTIMATE.start_main_~__tmp_8~0#1| 1) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_2~0#1| 2147483647) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~4#1| 1) (<= |ULTIMATE.start_main_~__tmp_7~0#1| 1) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~7#1| 1) (<= 0 |ULTIMATE.start_main_~__tmp_11~0#1|) (<= 0 |ULTIMATE.start_main_~__tmp_9~0#1|) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~7#1|) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~1#1|) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~9#1|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~8#1| 1) (<= |ULTIMATE.start_main_~__tmp_10~0#1| 1) (<= |ULTIMATE.start_main_~__tmp_5~0#1| 1) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~5#1| 1) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1|) (<= 1 |ULTIMATE.start_main_~main__cp~0#1|) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~6#1|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 1) (<= 1 |ULTIMATE.start_main_~main__urilen~0#1|) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~__tmp_8~0#1|) (<= 0 |ULTIMATE.start_main_~__tmp_6~0#1|) (<= |ULTIMATE.start_main_~__tmp_1~0#1| 1) (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1|) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~5#1|) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~3#1|) (<= 0 |ULTIMATE.start_main_~__VERIFIER_assert__cond~8#1|) (<= |ULTIMATE.start_main_~__tmp_4~0#1| 1) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= |ULTIMATE.start_main_~__VERIFIER_assert__cond~6#1| 1) (<= 1 |ULTIMATE.start_main_~main__scheme~0#1|) (<= 0 |#StackHeapBarrier|) (= ~__return_main~0 0) (<= 1 |ULTIMATE.start_main_~main__tokenlen~0#1|) (= ~__return_375~0 0) (<= 0 |ULTIMATE.start_main_~__tmp_10~0#1|) (= |#NULL.base| 0) (= |ULTIMATE.start_main_~main__c~0#1| 0) (<= 0 |ULTIMATE.start_main_~__tmp_2~0#1|))' at error location [2021-11-25 18:18:07,687 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:18:07,688 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:18:07,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2021-11-25 18:18:07,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350156203] [2021-11-25 18:18:07,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:18:07,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:18:07,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:18:07,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:18:07,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=992, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 18:18:07,690 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:18:07,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:18:07,783 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2021-11-25 18:18:07,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:18:07,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 39 [2021-11-25 18:18:07,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:18:07,788 INFO L225 Difference]: With dead ends: 53 [2021-11-25 18:18:07,788 INFO L226 Difference]: Without dead ends: 51 [2021-11-25 18:18:07,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 76 SyntacticMatches, 10 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=426, Invalid=1134, Unknown=0, NotChecked=0, Total=1560 [2021-11-25 18:18:07,790 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 46 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:18:07,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 57 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:18:07,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-25 18:18:07,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-25 18:18:07,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.08) internal successors, (54), 50 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) [2021-11-25 18:18:07,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2021-11-25 18:18:07,796 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 39 [2021-11-25 18:18:07,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:18:07,796 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2021-11-25 18:18:07,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:18:07,796 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2021-11-25 18:18:07,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-25 18:18:07,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:18:07,797 INFO L514 BasicCegarLoop]: 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] [2021-11-25 18:18:07,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:18:08,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-25 18:18:08,020 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2021-11-25 18:18:08,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:18:08,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1269390535, now seen corresponding path program 1 times [2021-11-25 18:18:08,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:18:08,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345469429] [2021-11-25 18:18:08,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:18:08,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:18:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:18:08,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:18:08,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:18:08,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345469429] [2021-11-25 18:18:08,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345469429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:18:08,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:18:08,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:18:08,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606396793] [2021-11-25 18:18:08,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:18:08,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:18:08,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:18:08,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:18:08,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:18:08,120 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:18:08,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:18:08,239 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2021-11-25 18:18:08,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:18:08,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 44 [2021-11-25 18:18:08,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:18:08,240 INFO L225 Difference]: With dead ends: 70 [2021-11-25 18:18:08,240 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 18:18:08,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:18:08,242 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 36 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:18:08,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 81 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:18:08,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 18:18:08,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 18:18:08,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:18:08,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 18:18:08,243 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2021-11-25 18:18:08,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:18:08,244 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 18:18:08,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:18:08,244 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 18:18:08,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 18:18:08,247 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (17 of 18 remaining) [2021-11-25 18:18:08,248 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (16 of 18 remaining) [2021-11-25 18:18:08,248 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (15 of 18 remaining) [2021-11-25 18:18:08,248 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (14 of 18 remaining) [2021-11-25 18:18:08,248 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (13 of 18 remaining) [2021-11-25 18:18:08,249 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (12 of 18 remaining) [2021-11-25 18:18:08,249 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (11 of 18 remaining) [2021-11-25 18:18:08,249 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (10 of 18 remaining) [2021-11-25 18:18:08,249 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (9 of 18 remaining) [2021-11-25 18:18:08,249 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (8 of 18 remaining) [2021-11-25 18:18:08,250 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (7 of 18 remaining) [2021-11-25 18:18:08,250 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (6 of 18 remaining) [2021-11-25 18:18:08,250 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (5 of 18 remaining) [2021-11-25 18:18:08,250 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION (4 of 18 remaining) [2021-11-25 18:18:08,250 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION (3 of 18 remaining) [2021-11-25 18:18:08,251 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION (2 of 18 remaining) [2021-11-25 18:18:08,251 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION (1 of 18 remaining) [2021-11-25 18:18:08,251 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION (0 of 18 remaining) [2021-11-25 18:18:08,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 18:18:08,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 18:18:23,984 WARN L227 SmtUtils]: Spent 15.72s on a formula simplification. DAG size of input: 117 DAG size of output: 115 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-25 18:18:28,431 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 97) no Hoare annotation was computed. [2021-11-25 18:18:28,431 INFO L858 garLoopResultBuilder]: For program point L85(line 85) no Hoare annotation was computed. [2021-11-25 18:18:28,431 INFO L858 garLoopResultBuilder]: For program point L234(lines 234 338) no Hoare annotation was computed. [2021-11-25 18:18:28,431 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 272) no Hoare annotation was computed. [2021-11-25 18:18:28,431 INFO L858 garLoopResultBuilder]: For program point L135(lines 135 397) no Hoare annotation was computed. [2021-11-25 18:18:28,431 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 18:18:28,432 INFO L858 garLoopResultBuilder]: For program point L284(line 284) no Hoare annotation was computed. [2021-11-25 18:18:28,432 INFO L858 garLoopResultBuilder]: For program point L53(lines 53 433) no Hoare annotation was computed. [2021-11-25 18:18:28,432 INFO L858 garLoopResultBuilder]: For program point L384(lines 384 393) no Hoare annotation was computed. [2021-11-25 18:18:28,432 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 255) no Hoare annotation was computed. [2021-11-25 18:18:28,432 INFO L854 garLoopResultBuilder]: At program point L401(lines 131 402) the Hoare annotation is: (and (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~3#1| 1) (< |ULTIMATE.start_main_~main__cp~0#1| |ULTIMATE.start_main_~main__urilen~0#1|) (let ((.cse0 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 0))) (.cse1 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~1#1| 0))) (.cse2 (< 0 |ULTIMATE.start_main_~main__scheme~0#1|)) (.cse3 (<= 1 |ULTIMATE.start_main_~main__cp~0#1|)) (.cse4 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 0)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~16#1| 0))) (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 1) .cse3 .cse4)))) [2021-11-25 18:18:28,432 INFO L858 garLoopResultBuilder]: For program point L104(lines 104 411) no Hoare annotation was computed. [2021-11-25 18:18:28,432 INFO L858 garLoopResultBuilder]: For program point L71(lines 71 416) no Hoare annotation was computed. [2021-11-25 18:18:28,433 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2021-11-25 18:18:28,433 INFO L858 garLoopResultBuilder]: For program point L253(lines 253 329) no Hoare annotation was computed. [2021-11-25 18:18:28,433 INFO L858 garLoopResultBuilder]: For program point L187(lines 187 355) no Hoare annotation was computed. [2021-11-25 18:18:28,433 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 386) no Hoare annotation was computed. [2021-11-25 18:18:28,433 INFO L858 garLoopResultBuilder]: For program point L270(lines 270 322) no Hoare annotation was computed. [2021-11-25 18:18:28,433 INFO L858 garLoopResultBuilder]: For program point L204(lines 204 353) no Hoare annotation was computed. [2021-11-25 18:18:28,434 INFO L858 garLoopResultBuilder]: For program point L386(line 386) no Hoare annotation was computed. [2021-11-25 18:18:28,434 INFO L858 garLoopResultBuilder]: For program point L155(lines 155 360) no Hoare annotation was computed. [2021-11-25 18:18:28,434 INFO L858 garLoopResultBuilder]: For program point L23(lines 23 438) no Hoare annotation was computed. [2021-11-25 18:18:28,434 INFO L858 garLoopResultBuilder]: For program point L255(line 255) no Hoare annotation was computed. [2021-11-25 18:18:28,434 INFO L858 garLoopResultBuilder]: For program point L189(line 189) no Hoare annotation was computed. [2021-11-25 18:18:28,434 INFO L858 garLoopResultBuilder]: For program point L123(lines 123 403) no Hoare annotation was computed. [2021-11-25 18:18:28,435 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 214) no Hoare annotation was computed. [2021-11-25 18:18:28,435 INFO L858 garLoopResultBuilder]: For program point L272(line 272) no Hoare annotation was computed. [2021-11-25 18:18:28,435 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 435) no Hoare annotation was computed. [2021-11-25 18:18:28,435 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 18:18:28,435 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 189) no Hoare annotation was computed. [2021-11-25 18:18:28,435 INFO L858 garLoopResultBuilder]: For program point L157(line 157) no Hoare annotation was computed. [2021-11-25 18:18:28,436 INFO L858 garLoopResultBuilder]: For program point L372(lines 372 395) no Hoare annotation was computed. [2021-11-25 18:18:28,436 INFO L858 garLoopResultBuilder]: For program point L306(lines 306 316) no Hoare annotation was computed. [2021-11-25 18:18:28,436 INFO L858 garLoopResultBuilder]: For program point L224(lines 224 344) no Hoare annotation was computed. [2021-11-25 18:18:28,436 INFO L858 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-11-25 18:18:28,436 INFO L858 garLoopResultBuilder]: For program point L59(lines 59 432) no Hoare annotation was computed. [2021-11-25 18:18:28,436 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2021-11-25 18:18:28,437 INFO L858 garLoopResultBuilder]: For program point L241(lines 241 331) no Hoare annotation was computed. [2021-11-25 18:18:28,437 INFO L858 garLoopResultBuilder]: For program point L175(lines 175 357) no Hoare annotation was computed. [2021-11-25 18:18:28,437 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 284) no Hoare annotation was computed. [2021-11-25 18:18:28,437 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 226) no Hoare annotation was computed. [2021-11-25 18:18:28,437 INFO L858 garLoopResultBuilder]: For program point L374(line 374) no Hoare annotation was computed. [2021-11-25 18:18:28,437 INFO L858 garLoopResultBuilder]: For program point L308(line 308) no Hoare annotation was computed. [2021-11-25 18:18:28,438 INFO L858 garLoopResultBuilder]: For program point L143(lines 143 362) no Hoare annotation was computed. [2021-11-25 18:18:28,438 INFO L858 garLoopResultBuilder]: For program point L226(line 226) no Hoare annotation was computed. [2021-11-25 18:18:28,438 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 145) no Hoare annotation was computed. [2021-11-25 18:18:28,438 INFO L858 garLoopResultBuilder]: For program point L61(lines 61 427) no Hoare annotation was computed. [2021-11-25 18:18:28,438 INFO L858 garLoopResultBuilder]: For program point L243(line 243) no Hoare annotation was computed. [2021-11-25 18:18:28,438 INFO L858 garLoopResultBuilder]: For program point L177(line 177) no Hoare annotation was computed. [2021-11-25 18:18:28,439 INFO L858 garLoopResultBuilder]: For program point L111(lines 111 405) no Hoare annotation was computed. [2021-11-25 18:18:28,439 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 308) no Hoare annotation was computed. [2021-11-25 18:18:28,439 INFO L854 garLoopResultBuilder]: At program point L392(lines 129 403) the Hoare annotation is: (and (< |ULTIMATE.start_main_~main__cp~0#1| |ULTIMATE.start_main_~main__urilen~0#1|) (let ((.cse0 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 0))) (.cse1 (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~3#1| 1)) (.cse2 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~1#1| 0))) (.cse3 (< 0 |ULTIMATE.start_main_~main__scheme~0#1|)) (.cse4 (<= 1 |ULTIMATE.start_main_~main__cp~0#1|)) (.cse5 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 0)))) (or (and .cse0 .cse1 .cse2 .cse3 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~17#1| 0)) .cse4 .cse5 (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__cond~16#1|)) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 1) .cse4 .cse5)))) [2021-11-25 18:18:28,439 INFO L858 garLoopResultBuilder]: For program point L194(lines 194 354) no Hoare annotation was computed. [2021-11-25 18:18:28,439 INFO L858 garLoopResultBuilder]: For program point L95(lines 95 412) no Hoare annotation was computed. [2021-11-25 18:18:28,440 INFO L858 garLoopResultBuilder]: For program point L29(lines 29 437) no Hoare annotation was computed. [2021-11-25 18:18:28,440 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2021-11-25 18:18:28,440 INFO L858 garLoopResultBuilder]: For program point L145(line 145) no Hoare annotation was computed. [2021-11-25 18:18:28,440 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 296) no Hoare annotation was computed. [2021-11-25 18:18:28,440 INFO L854 garLoopResultBuilder]: At program point L327(lines 262 328) the Hoare annotation is: (and (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~10#1| 1) (let ((.cse0 (let ((.cse1 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~6#1| 0))) (.cse2 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 0))) (.cse3 (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~3#1| 1)) (.cse4 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~1#1| 0))) (.cse5 (< 0 |ULTIMATE.start_main_~main__scheme~0#1|)) (.cse6 (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__cond~4#1|)) (.cse7 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~10#1| 0))) (.cse8 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~11#1| 0))) (.cse9 (<= 1 |ULTIMATE.start_main_~main__cp~0#1|)) (.cse10 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 0))) (.cse11 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~9#1| 0))) (.cse12 (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~9#1| 1)) (.cse13 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~8#1| 0))) (.cse14 (< (+ |ULTIMATE.start_main_~main__cp~0#1| 1) |ULTIMATE.start_main_~main__urilen~0#1|)) (.cse15 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~5#1| 0))) (.cse16 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~7#1| 0)))) (or (and .cse1 .cse2 (<= (+ 2 |ULTIMATE.start_main_~main__c~0#1|) |ULTIMATE.start_main_~main__tokenlen~0#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~12#1| 0)) .cse15 .cse16))))) (or (and .cse0 (= |ULTIMATE.start_main_~main__c~0#1| 0)) (and (<= 1 |ULTIMATE.start_main_~main__c~0#1|) (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~13#1| 0)) .cse0)))) [2021-11-25 18:18:28,441 INFO L858 garLoopResultBuilder]: For program point L294(lines 294 318) no Hoare annotation was computed. [2021-11-25 18:18:28,441 INFO L858 garLoopResultBuilder]: For program point L162(lines 162 359) no Hoare annotation was computed. [2021-11-25 18:18:28,441 INFO L858 garLoopResultBuilder]: For program point L63(lines 63 422) no Hoare annotation was computed. [2021-11-25 18:18:28,441 INFO L854 garLoopResultBuilder]: At program point L410(lines 104 411) the Hoare annotation is: (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 0)) [2021-11-25 18:18:28,441 INFO L858 garLoopResultBuilder]: For program point L212(lines 212 346) no Hoare annotation was computed. [2021-11-25 18:18:28,441 INFO L858 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-11-25 18:18:28,442 INFO L858 garLoopResultBuilder]: For program point L47(lines 47 434) no Hoare annotation was computed. [2021-11-25 18:18:28,442 INFO L858 garLoopResultBuilder]: For program point L262(lines 262 328) no Hoare annotation was computed. [2021-11-25 18:18:28,442 INFO L858 garLoopResultBuilder]: For program point L97(line 97) no Hoare annotation was computed. [2021-11-25 18:18:28,442 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 157) no Hoare annotation was computed. [2021-11-25 18:18:28,442 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 374) no Hoare annotation was computed. [2021-11-25 18:18:28,442 INFO L858 garLoopResultBuilder]: For program point L296(line 296) no Hoare annotation was computed. [2021-11-25 18:18:28,443 INFO L858 garLoopResultBuilder]: For program point L65(lines 65 417) no Hoare annotation was computed. [2021-11-25 18:18:28,443 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 85) no Hoare annotation was computed. [2021-11-25 18:18:28,443 INFO L858 garLoopResultBuilder]: For program point L214(line 214) no Hoare annotation was computed. [2021-11-25 18:18:28,443 INFO L858 garLoopResultBuilder]: For program point L83(lines 83 414) no Hoare annotation was computed. [2021-11-25 18:18:28,443 INFO L854 garLoopResultBuilder]: At program point L315(lines 230 344) the Hoare annotation is: (let ((.cse2 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~6#1| 0))) (.cse3 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 0))) (.cse4 (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~3#1| 1)) (.cse5 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~1#1| 0))) (.cse6 (< 0 |ULTIMATE.start_main_~main__scheme~0#1|)) (.cse7 (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__cond~4#1|)) (.cse8 (< |ULTIMATE.start_main_~main__cp~0#1| |ULTIMATE.start_main_~main__urilen~0#1|)) (.cse11 (<= 1 |ULTIMATE.start_main_~main__cp~0#1|)) (.cse12 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 0))) (.cse13 (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~9#1| 1)) (.cse14 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~8#1| 0))) (.cse15 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~5#1| 0))) (.cse16 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~7#1| 0))) (.cse1 (= |ULTIMATE.start_main_~main__c~0#1| 0))) (or (and (let ((.cse0 (let ((.cse9 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~10#1| 0))) (.cse10 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~11#1| 0)))) (or (and .cse2 .cse3 (<= (+ 2 |ULTIMATE.start_main_~main__c~0#1|) |ULTIMATE.start_main_~main__tokenlen~0#1|) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16) (and .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~12#1| 0)) .cse15 .cse16))))) (or (and .cse0 .cse1) (and (<= 1 |ULTIMATE.start_main_~main__c~0#1|) (not (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~13#1| 0)) .cse0))) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__cond~10#1|)) (and .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~8#1| 1) .cse11 .cse12 .cse13 .cse14 (< (+ |ULTIMATE.start_main_~main__cp~0#1| 1) |ULTIMATE.start_main_~main__urilen~0#1|) .cse15 .cse16 .cse1))) [2021-11-25 18:18:28,444 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 243) no Hoare annotation was computed. [2021-11-25 18:18:28,444 INFO L858 garLoopResultBuilder]: For program point L282(lines 282 320) no Hoare annotation was computed. [2021-11-25 18:18:28,444 INFO L861 garLoopResultBuilder]: At program point L431(lines 13 439) the Hoare annotation is: true [2021-11-25 18:18:28,444 INFO L858 garLoopResultBuilder]: For program point L35(lines 35 436) no Hoare annotation was computed. [2021-11-25 18:18:28,447 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:18:28,449 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:18:28,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:18:28 BoogieIcfgContainer [2021-11-25 18:18:28,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:18:28,478 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:18:28,478 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:18:28,478 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:18:28,479 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:17:39" (3/4) ... [2021-11-25 18:18:28,482 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 18:18:28,496 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-25 18:18:28,496 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-25 18:18:28,497 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-25 18:18:28,498 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 18:18:28,560 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 18:18:28,561 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:18:28,561 INFO L158 Benchmark]: Toolchain (without parser) took 50580.21ms. Allocated memory was 98.6MB in the beginning and 333.4MB in the end (delta: 234.9MB). Free memory was 65.2MB in the beginning and 239.5MB in the end (delta: -174.3MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. [2021-11-25 18:18:28,562 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 98.6MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:18:28,562 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.59ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 64.9MB in the beginning and 85.7MB in the end (delta: -20.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 18:18:28,562 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.34ms. Allocated memory is still 119.5MB. Free memory was 85.7MB in the beginning and 83.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:18:28,563 INFO L158 Benchmark]: Boogie Preprocessor took 72.36ms. Allocated memory is still 119.5MB. Free memory was 83.6MB in the beginning and 82.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:18:28,563 INFO L158 Benchmark]: RCFGBuilder took 552.64ms. Allocated memory is still 119.5MB. Free memory was 82.4MB in the beginning and 66.3MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-25 18:18:28,563 INFO L158 Benchmark]: TraceAbstraction took 49329.78ms. Allocated memory was 119.5MB in the beginning and 333.4MB in the end (delta: 213.9MB). Free memory was 66.3MB in the beginning and 246.8MB in the end (delta: -180.5MB). Peak memory consumption was 173.0MB. Max. memory is 16.1GB. [2021-11-25 18:18:28,564 INFO L158 Benchmark]: Witness Printer took 82.79ms. Allocated memory is still 333.4MB. Free memory was 246.8MB in the beginning and 239.5MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-25 18:18:28,566 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 98.6MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 447.59ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 64.9MB in the beginning and 85.7MB in the end (delta: -20.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.34ms. Allocated memory is still 119.5MB. Free memory was 85.7MB in the beginning and 83.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.36ms. Allocated memory is still 119.5MB. Free memory was 83.6MB in the beginning and 82.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 552.64ms. Allocated memory is still 119.5MB. Free memory was 82.4MB in the beginning and 66.3MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 49329.78ms. Allocated memory was 119.5MB in the beginning and 333.4MB in the end (delta: 213.9MB). Free memory was 66.3MB in the beginning and 246.8MB in the end (delta: -180.5MB). Peak memory consumption was 173.0MB. Max. memory is 16.1GB. * Witness Printer took 82.79ms. Allocated memory is still 333.4MB. Free memory was 246.8MB in the beginning and 239.5MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 85]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 97]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 113]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 125]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 145]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 157]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 177]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 189]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 214]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 226]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 243]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 255]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 272]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 284]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 296]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 308]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 374]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 386]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 80 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 49.2s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 20.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2019 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2019 mSDsluCounter, 2600 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1404 mSDsCounter, 108 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1191 IncrementalHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 108 mSolverCounterUnsat, 1197 mSDtfsCounter, 1191 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 426 GetRequests, 218 SyntacticMatches, 21 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 18.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, InterpolantAutomatonStates: 129, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 300 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 15 NumberOfFragments, 714 HoareAnnotationTreeSize, 6 FomulaSimplifications, 58355 FormulaSimplificationTreeSizeReduction, 19.3s HoareSimplificationTime, 6 FomulaSimplificationsInter, 312401 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 725 NumberOfCodeBlocks, 725 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 786 ConstructedInterpolants, 0 QuantifiedInterpolants, 1735 SizeOfPredicates, 12 NumberOfNonLiveVariables, 362 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 29 InterpolantComputations, 20 PerfectInterpolantSequences, 11/29 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 230]: Loop Invariant Derived loop invariant: (((((((((((((((((((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && 2 + main__c <= main__tokenlen) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && 1 <= __VERIFIER_assert__cond) && main__cp < main__urilen) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= main__cp) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || (((((((((((((((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && 1 <= __VERIFIER_assert__cond) && main__cp < main__urilen) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= main__cp) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0))) && main__c == 0) || ((1 <= main__c && !(__VERIFIER_assert__cond == 0)) && ((((((((((((((((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && 2 + main__c <= main__tokenlen) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && 1 <= __VERIFIER_assert__cond) && main__cp < main__urilen) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= main__cp) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || (((((((((((((((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && 1 <= __VERIFIER_assert__cond) && main__cp < main__urilen) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= main__cp) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0))))) && 1 <= __VERIFIER_assert__cond) || (((((((((((((((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && 1 <= __VERIFIER_assert__cond) && main__cp < main__urilen) && __VERIFIER_assert__cond == 1) && 1 <= main__cp) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && main__cp + 1 < main__urilen) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && main__c == 0) - InvariantResult [Line: 262]: Loop Invariant Derived loop invariant: __VERIFIER_assert__cond == 1 && (((((((((((((((((((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && 2 + main__c <= main__tokenlen) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && 1 <= __VERIFIER_assert__cond) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= main__cp) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && main__cp + 1 < main__urilen) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || ((((((((((((((((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && 1 <= __VERIFIER_assert__cond) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= main__cp) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && main__cp + 1 < main__urilen) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0))) && main__c == 0) || ((1 <= main__c && !(__VERIFIER_assert__cond == 0)) && (((((((((((((((((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && 2 + main__c <= main__tokenlen) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && 1 <= __VERIFIER_assert__cond) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= main__cp) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && main__cp + 1 < main__urilen) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || ((((((((((((((((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && 1 <= __VERIFIER_assert__cond) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && 1 <= main__cp) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && main__cp + 1 < main__urilen) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0))))) - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: main__cp < main__urilen && ((((((((!(__VERIFIER_assert__cond == 0) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && !(__VERIFIER_assert__cond == 0)) && 1 <= main__cp) && !(__VERIFIER_assert__cond == 0)) && 1 <= __VERIFIER_assert__cond) || ((((((!(__VERIFIER_assert__cond == 0) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && __VERIFIER_assert__cond == 1) && 1 <= main__cp) && !(__VERIFIER_assert__cond == 0))) - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: (__VERIFIER_assert__cond == 1 && main__cp < main__urilen) && ((((((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && 1 <= main__cp) && !(__VERIFIER_assert__cond == 0)) && !(__VERIFIER_assert__cond == 0)) || (((((!(__VERIFIER_assert__cond == 0) && !(__VERIFIER_assert__cond == 0)) && 0 < main__scheme) && __VERIFIER_assert__cond == 1) && 1 <= main__cp) && !(__VERIFIER_assert__cond == 0))) RESULT: Ultimate proved your program to be correct! [2021-11-25 18:18:28,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fe36307-76df-42f9-90fa-58d3e502cdde/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE