./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 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 0.2.4-dev-0e0057c [2023-12-02 16:12:45,715 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:12:45,782 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 16:12:45,786 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:12:45,787 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:12:45,811 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:12:45,812 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:12:45,812 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:12:45,813 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:12:45,814 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:12:45,814 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:12:45,815 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:12:45,815 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:12:45,816 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:12:45,816 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:12:45,817 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:12:45,817 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:12:45,818 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:12:45,818 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:12:45,819 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:12:45,819 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:12:45,820 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:12:45,821 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:12:45,821 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:12:45,822 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:12:45,822 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:12:45,822 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:12:45,823 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:12:45,823 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:12:45,823 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:12:45,834 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:12:45,834 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:12:45,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:12:45,835 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:12:45,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:12:45,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:12:45,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:12:45,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:12:45,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:12:45,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:12:45,837 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:12:45,838 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:12:45,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:12:45,838 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:12:45,838 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:12:45,839 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:12:45,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:12:45,839 INFO L153 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce67d33baf8e2191d295422ec2c8649be746cd4f4f75c5de99bdc3950e33cc6c [2023-12-02 16:12:46,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:12:46,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:12:46,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:12:46,077 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:12:46,077 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:12:46,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2023-12-02 16:12:48,860 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:12:49,035 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:12:49,035 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2023-12-02 16:12:49,048 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/data/b716d16ca/3e0062dba60949efab525960565bb318/FLAG56cf9f103 [2023-12-02 16:12:49,061 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/data/b716d16ca/3e0062dba60949efab525960565bb318 [2023-12-02 16:12:49,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:12:49,065 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:12:49,066 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:12:49,067 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:12:49,071 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:12:49,071 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:12:49" (1/1) ... [2023-12-02 16:12:49,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679710fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:49, skipping insertion in model container [2023-12-02 16:12:49,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:12:49" (1/1) ... [2023-12-02 16:12:49,105 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:12:49,241 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1551,1564] [2023-12-02 16:12:49,246 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1758,1771] [2023-12-02 16:12:49,249 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2095,2108] [2023-12-02 16:12:49,251 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2296,2309] [2023-12-02 16:12:49,254 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2701,2714] [2023-12-02 16:12:49,256 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2902,2915] [2023-12-02 16:12:49,259 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3228,3241] [2023-12-02 16:12:49,262 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3435,3448] [2023-12-02 16:12:49,265 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3914,3927] [2023-12-02 16:12:49,267 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4118,4131] [2023-12-02 16:12:49,270 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4426,4439] [2023-12-02 16:12:49,272 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4630,4643] [2023-12-02 16:12:49,275 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4995,5008] [2023-12-02 16:12:49,278 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5198,5211] [2023-12-02 16:12:49,281 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5412,5425] [2023-12-02 16:12:49,283 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5616,5629] [2023-12-02 16:12:49,287 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6138,6151] [2023-12-02 16:12:49,289 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6342,6355] [2023-12-02 16:12:49,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:12:49,304 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:12:49,318 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1551,1564] [2023-12-02 16:12:49,320 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[1758,1771] [2023-12-02 16:12:49,322 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2095,2108] [2023-12-02 16:12:49,323 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2296,2309] [2023-12-02 16:12:49,325 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2701,2714] [2023-12-02 16:12:49,327 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[2902,2915] [2023-12-02 16:12:49,329 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3228,3241] [2023-12-02 16:12:49,331 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3435,3448] [2023-12-02 16:12:49,334 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[3914,3927] [2023-12-02 16:12:49,336 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4118,4131] [2023-12-02 16:12:49,339 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4426,4439] [2023-12-02 16:12:49,341 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4630,4643] [2023-12-02 16:12:49,344 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[4995,5008] [2023-12-02 16:12:49,346 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5198,5211] [2023-12-02 16:12:49,348 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5412,5425] [2023-12-02 16:12:49,350 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[5616,5629] [2023-12-02 16:12:49,353 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6138,6151] [2023-12-02 16:12:49,355 WARN L240 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_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c[6342,6355] [2023-12-02 16:12:49,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:12:49,370 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:12:49,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:49 WrapperNode [2023-12-02 16:12:49,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:12:49,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:12:49,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:12:49,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:12:49,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:49" (1/1) ... [2023-12-02 16:12:49,384 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:49" (1/1) ... [2023-12-02 16:12:49,413 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 282 [2023-12-02 16:12:49,414 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:12:49,415 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:12:49,415 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:12:49,415 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:12:49,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:49" (1/1) ... [2023-12-02 16:12:49,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:49" (1/1) ... [2023-12-02 16:12:49,426 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:49" (1/1) ... [2023-12-02 16:12:49,426 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:49" (1/1) ... [2023-12-02 16:12:49,432 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:49" (1/1) ... [2023-12-02 16:12:49,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:49" (1/1) ... [2023-12-02 16:12:49,438 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:49" (1/1) ... [2023-12-02 16:12:49,440 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:49" (1/1) ... [2023-12-02 16:12:49,443 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:12:49,444 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:12:49,444 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:12:49,444 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:12:49,445 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:49" (1/1) ... [2023-12-02 16:12:49,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:12:49,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:12:49,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:12:49,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:12:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:12:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:12:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:12:49,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:12:49,592 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:12:49,594 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:12:49,870 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:12:49,893 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:12:49,893 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 16:12:49,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:12:49 BoogieIcfgContainer [2023-12-02 16:12:49,894 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:12:49,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:12:49,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:12:49,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:12:49,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:12:49" (1/3) ... [2023-12-02 16:12:49,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17eea218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:12:49, skipping insertion in model container [2023-12-02 16:12:49,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:49" (2/3) ... [2023-12-02 16:12:49,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17eea218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:12:49, skipping insertion in model container [2023-12-02 16:12:49,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:12:49" (3/3) ... [2023-12-02 16:12:49,904 INFO L112 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i.v+cfa-reducer.c [2023-12-02 16:12:49,921 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:12:49,921 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-12-02 16:12:49,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:12:49,967 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7b2a0d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:12:49,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-12-02 16:12:49,972 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) [2023-12-02 16:12:49,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 16:12:49,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:49,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:12:49,979 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:12:49,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:49,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1596893429, now seen corresponding path program 1 times [2023-12-02 16:12:49,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:49,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869876956] [2023-12-02 16:12:49,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:49,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:50,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:12:50,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:12:50,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869876956] [2023-12-02 16:12:50,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869876956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:12:50,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:12:50,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:12:50,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356679412] [2023-12-02 16:12:50,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:12:50,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:12:50,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:50,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:12:50,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:12:50,291 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) [2023-12-02 16:12:50,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:12:50,325 INFO L93 Difference]: Finished difference Result 83 states and 119 transitions. [2023-12-02 16:12:50,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:12:50,328 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 [2023-12-02 16:12:50,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:12:50,336 INFO L225 Difference]: With dead ends: 83 [2023-12-02 16:12:50,336 INFO L226 Difference]: Without dead ends: 75 [2023-12-02 16:12:50,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:12:50,342 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 73 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:12:50,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 115 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:12:50,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-02 16:12:50,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-12-02 16:12:50,372 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) [2023-12-02 16:12:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2023-12-02 16:12:50,376 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 14 [2023-12-02 16:12:50,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:12:50,376 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2023-12-02 16:12:50,377 INFO L496 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) [2023-12-02 16:12:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2023-12-02 16:12:50,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 16:12:50,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:50,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:12:50,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:12:50,378 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:12:50,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:50,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2035915345, now seen corresponding path program 1 times [2023-12-02 16:12:50,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:50,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359893894] [2023-12-02 16:12:50,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:50,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:50,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:12:50,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:12:50,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359893894] [2023-12-02 16:12:50,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359893894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:12:50,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:12:50,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:12:50,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043433345] [2023-12-02 16:12:50,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:12:50,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:12:50,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:50,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:12:50,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:12:50,520 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) [2023-12-02 16:12:50,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:12:50,604 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2023-12-02 16:12:50,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:12:50,605 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 [2023-12-02 16:12:50,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:12:50,606 INFO L225 Difference]: With dead ends: 75 [2023-12-02 16:12:50,606 INFO L226 Difference]: Without dead ends: 73 [2023-12-02 16:12:50,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:12:50,608 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 188 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:12:50,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 81 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:12:50,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-02 16:12:50,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-12-02 16:12:50,616 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) [2023-12-02 16:12:50,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2023-12-02 16:12:50,617 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 15 [2023-12-02 16:12:50,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:12:50,618 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2023-12-02 16:12:50,618 INFO L496 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) [2023-12-02 16:12:50,618 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2023-12-02 16:12:50,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 16:12:50,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:50,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:12:50,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 16:12:50,619 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:12:50,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:50,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1990313228, now seen corresponding path program 1 times [2023-12-02 16:12:50,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:50,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321871904] [2023-12-02 16:12:50,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:50,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:50,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:12:50,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:12:50,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321871904] [2023-12-02 16:12:50,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321871904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:12:50,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:12:50,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:12:50,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830104275] [2023-12-02 16:12:50,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:12:50,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:12:50,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:50,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:12:50,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:12:50,714 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) [2023-12-02 16:12:50,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:12:50,777 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2023-12-02 16:12:50,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:12:50,778 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 [2023-12-02 16:12:50,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:12:50,779 INFO L225 Difference]: With dead ends: 96 [2023-12-02 16:12:50,779 INFO L226 Difference]: Without dead ends: 94 [2023-12-02 16:12:50,780 INFO L412 NwaCegarLoop]: 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 [2023-12-02 16:12:50,781 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 112 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:12:50,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 116 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:12:50,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-02 16:12:50,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 71. [2023-12-02 16:12:50,789 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) [2023-12-02 16:12:50,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2023-12-02 16:12:50,790 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 17 [2023-12-02 16:12:50,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:12:50,791 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2023-12-02 16:12:50,791 INFO L496 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) [2023-12-02 16:12:50,791 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2023-12-02 16:12:50,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 16:12:50,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:50,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:12:50,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 16:12:50,793 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:12:50,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:50,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1570163815, now seen corresponding path program 1 times [2023-12-02 16:12:50,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:50,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078305980] [2023-12-02 16:12:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:50,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:50,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:12:50,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:12:50,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078305980] [2023-12-02 16:12:50,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078305980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:12:50,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:12:50,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:12:50,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823299382] [2023-12-02 16:12:50,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:12:50,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:12:50,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:50,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:12:50,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:12:50,883 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) [2023-12-02 16:12:50,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:12:50,942 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2023-12-02 16:12:50,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:12:50,943 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 [2023-12-02 16:12:50,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:12:50,944 INFO L225 Difference]: With dead ends: 71 [2023-12-02 16:12:50,944 INFO L226 Difference]: Without dead ends: 69 [2023-12-02 16:12:50,945 INFO L412 NwaCegarLoop]: 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 [2023-12-02 16:12:50,946 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 170 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:12:50,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 72 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:12:50,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-02 16:12:50,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-12-02 16:12:50,952 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) [2023-12-02 16:12:50,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2023-12-02 16:12:50,953 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 18 [2023-12-02 16:12:50,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:12:50,953 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2023-12-02 16:12:50,954 INFO L496 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) [2023-12-02 16:12:50,954 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2023-12-02 16:12:50,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 16:12:50,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:50,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:12:50,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 16:12:50,955 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:12:50,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:50,956 INFO L85 PathProgramCache]: Analyzing trace with hash -253108944, now seen corresponding path program 1 times [2023-12-02 16:12:50,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:50,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115019387] [2023-12-02 16:12:50,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:50,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:12:51,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:12:51,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115019387] [2023-12-02 16:12:51,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115019387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:12:51,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:12:51,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:12:51,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764692722] [2023-12-02 16:12:51,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:12:51,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:12:51,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:51,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:12:51,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:12:51,045 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) [2023-12-02 16:12:51,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:12:51,154 INFO L93 Difference]: Finished difference Result 105 states and 111 transitions. [2023-12-02 16:12:51,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:12:51,155 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 [2023-12-02 16:12:51,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:12:51,156 INFO L225 Difference]: With dead ends: 105 [2023-12-02 16:12:51,156 INFO L226 Difference]: Without dead ends: 103 [2023-12-02 16:12:51,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:12:51,157 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 123 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:12:51,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 166 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:12:51,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-02 16:12:51,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 73. [2023-12-02 16:12:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 72 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) [2023-12-02 16:12:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2023-12-02 16:12:51,165 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 21 [2023-12-02 16:12:51,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:12:51,166 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2023-12-02 16:12:51,166 INFO L496 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) [2023-12-02 16:12:51,166 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2023-12-02 16:12:51,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 16:12:51,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:51,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:12:51,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 16:12:51,167 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:12:51,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:51,168 INFO L85 PathProgramCache]: Analyzing trace with hash -257276709, now seen corresponding path program 1 times [2023-12-02 16:12:51,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:51,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656809324] [2023-12-02 16:12:51,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:51,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:12:51,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:12:51,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656809324] [2023-12-02 16:12:51,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656809324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:12:51,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:12:51,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:12:51,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752098300] [2023-12-02 16:12:51,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:12:51,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:12:51,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:51,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:12:51,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:12:51,248 INFO L87 Difference]: Start difference. First operand 73 states and 78 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) [2023-12-02 16:12:51,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:12:51,377 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2023-12-02 16:12:51,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:12:51,377 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 [2023-12-02 16:12:51,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:12:51,378 INFO L225 Difference]: With dead ends: 132 [2023-12-02 16:12:51,379 INFO L226 Difference]: Without dead ends: 130 [2023-12-02 16:12:51,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:12:51,380 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 122 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 286 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 [2023-12-02 16:12:51,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 286 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:12:51,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-02 16:12:51,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 74. [2023-12-02 16:12:51,386 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) [2023-12-02 16:12:51,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2023-12-02 16:12:51,387 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 21 [2023-12-02 16:12:51,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:12:51,387 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2023-12-02 16:12:51,387 INFO L496 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) [2023-12-02 16:12:51,388 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2023-12-02 16:12:51,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 16:12:51,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:51,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:12:51,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 16:12:51,389 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:12:51,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:51,389 INFO L85 PathProgramCache]: Analyzing trace with hash 743561460, now seen corresponding path program 1 times [2023-12-02 16:12:51,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:51,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946304117] [2023-12-02 16:12:51,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:51,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:12:51,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:12:51,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946304117] [2023-12-02 16:12:51,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946304117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:12:51,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:12:51,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:12:51,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635854139] [2023-12-02 16:12:51,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:12:51,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:12:51,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:51,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:12:51,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:12:51,463 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) [2023-12-02 16:12:51,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:12:51,527 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2023-12-02 16:12:51,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:12:51,527 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 [2023-12-02 16:12:51,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:12:51,528 INFO L225 Difference]: With dead ends: 74 [2023-12-02 16:12:51,528 INFO L226 Difference]: Without dead ends: 72 [2023-12-02 16:12:51,529 INFO L412 NwaCegarLoop]: 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 [2023-12-02 16:12:51,530 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 138 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:12:51,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 93 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:12:51,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-02 16:12:51,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-12-02 16:12:51,534 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) [2023-12-02 16:12:51,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2023-12-02 16:12:51,535 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 22 [2023-12-02 16:12:51,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:12:51,536 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2023-12-02 16:12:51,536 INFO L496 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) [2023-12-02 16:12:51,536 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2023-12-02 16:12:51,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 16:12:51,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:51,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:12:51,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 16:12:51,537 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:12:51,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:51,538 INFO L85 PathProgramCache]: Analyzing trace with hash 614360868, now seen corresponding path program 1 times [2023-12-02 16:12:51,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:51,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389221497] [2023-12-02 16:12:51,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:51,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:12:51,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:12:51,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389221497] [2023-12-02 16:12:51,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389221497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:12:51,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:12:51,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:12:51,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659475310] [2023-12-02 16:12:51,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:12:51,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:12:51,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:51,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:12:51,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:12:51,612 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) [2023-12-02 16:12:51,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:12:51,696 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2023-12-02 16:12:51,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:12:51,696 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 [2023-12-02 16:12:51,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:12:51,697 INFO L225 Difference]: With dead ends: 112 [2023-12-02 16:12:51,697 INFO L226 Difference]: Without dead ends: 110 [2023-12-02 16:12:51,698 INFO L412 NwaCegarLoop]: 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 [2023-12-02 16:12:51,699 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 145 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:12:51,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 143 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:12:51,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-02 16:12:51,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 70. [2023-12-02 16:12:51,703 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) [2023-12-02 16:12:51,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2023-12-02 16:12:51,704 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 22 [2023-12-02 16:12:51,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:12:51,704 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2023-12-02 16:12:51,705 INFO L496 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) [2023-12-02 16:12:51,705 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2023-12-02 16:12:51,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 16:12:51,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:51,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:12:51,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 16:12:51,706 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:12:51,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:51,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1598124379, now seen corresponding path program 1 times [2023-12-02 16:12:51,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:51,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571073962] [2023-12-02 16:12:51,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:51,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:51,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:12:51,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:12:51,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571073962] [2023-12-02 16:12:51,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571073962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:12:51,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:12:51,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:12:51,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468780105] [2023-12-02 16:12:51,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:12:51,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:12:51,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:51,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:12:51,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:12:51,736 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) [2023-12-02 16:12:51,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:12:51,771 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2023-12-02 16:12:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:12:51,771 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 [2023-12-02 16:12:51,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:12:51,772 INFO L225 Difference]: With dead ends: 110 [2023-12-02 16:12:51,772 INFO L226 Difference]: Without dead ends: 70 [2023-12-02 16:12:51,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:12:51,773 INFO L413 NwaCegarLoop]: 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 [2023-12-02 16:12:51,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:12:51,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-02 16:12:51,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-12-02 16:12:51,777 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) [2023-12-02 16:12:51,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2023-12-02 16:12:51,777 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 24 [2023-12-02 16:12:51,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:12:51,778 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2023-12-02 16:12:51,778 INFO L496 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) [2023-12-02 16:12:51,778 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2023-12-02 16:12:51,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 16:12:51,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:51,779 INFO L195 NwaCegarLoop]: 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] [2023-12-02 16:12:51,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 16:12:51,779 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:12:51,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:51,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1568736066, now seen corresponding path program 1 times [2023-12-02 16:12:51,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:51,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168978222] [2023-12-02 16:12:51,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:51,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:51,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 16:12:51,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:12:51,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168978222] [2023-12-02 16:12:51,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168978222] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:12:51,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602887552] [2023-12-02 16:12:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:51,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:12:51,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:12:51,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:12:51,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:12:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:51,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 16:12:51,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:12:52,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 16:12:52,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:12:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 16:12:52,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602887552] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:12:52,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1010625900] [2023-12-02 16:12:52,079 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-12-02 16:12:52,079 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:12:52,082 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:12:52,087 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:12:52,087 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:12:52,735 WARN L110 ntervalStateProvider]: Interval conversion did not stabilize in 20 iterations. Over-approximation may be very coarse. [2023-12-02 16:12:53,048 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:12:55,871 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1809#(and (<= 0 (+ |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 2147483648)) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~__tmp_3~0#1| 1) (= |ULTIMATE.start_main_~__tmp_4~0#1| 1) (<= 2 |ULTIMATE.start_main_~main__urilen~0#1|) (= |ULTIMATE.start_main_~__tmp_1~0#1| 1) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~3#1| 1) (<= 0 |ULTIMATE.start_main_~__tmp_17~0#1|) (<= |ULTIMATE.start_main_~main__urilen~0#1| 1000000) (<= |ULTIMATE.start_main_~main__tokenlen~0#1| 1000000) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~16#1| 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 1) (<= |ULTIMATE.start_main_~main__scheme~0#1| 999999) (<= 1 |ULTIMATE.start_main_~main__cp~0#1|) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 2147483647) (= |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 0) (<= |ULTIMATE.start_main_~__tmp_17~0#1| 1) (= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= 1 |ULTIMATE.start_main_~main__scheme~0#1|) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1) (= ~__return_main~0 0) (<= 1 |ULTIMATE.start_main_~main__tokenlen~0#1|) (= ~__return_375~0 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~1#1| 1))' at error location [2023-12-02 16:12:55,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:12:55,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:12:55,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2023-12-02 16:12:55,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156148263] [2023-12-02 16:12:55,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:12:55,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:12:55,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:55,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:12:55,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2023-12-02 16:12:55,873 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) [2023-12-02 16:12:55,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:12:55,967 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2023-12-02 16:12:55,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:12:55,967 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 [2023-12-02 16:12:55,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:12:55,968 INFO L225 Difference]: With dead ends: 110 [2023-12-02 16:12:55,968 INFO L226 Difference]: Without dead ends: 108 [2023-12-02 16:12:55,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2023-12-02 16:12:55,970 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 90 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:12:55,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 173 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:12:55,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-02 16:12:55,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 67. [2023-12-02 16:12:55,974 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) [2023-12-02 16:12:55,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2023-12-02 16:12:55,974 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 25 [2023-12-02 16:12:55,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:12:55,975 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2023-12-02 16:12:55,975 INFO L496 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) [2023-12-02 16:12:55,975 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2023-12-02 16:12:55,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 16:12:55,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:55,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:12:55,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:12:56,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 16:12:56,183 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:12:56,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:56,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1541456980, now seen corresponding path program 1 times [2023-12-02 16:12:56,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:56,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800172989] [2023-12-02 16:12:56,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:56,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:12:56,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:12:56,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800172989] [2023-12-02 16:12:56,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800172989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:12:56,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:12:56,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:12:56,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627506556] [2023-12-02 16:12:56,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:12:56,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:12:56,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:56,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:12:56,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:12:56,276 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) [2023-12-02 16:12:56,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:12:56,329 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2023-12-02 16:12:56,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:12:56,329 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 [2023-12-02 16:12:56,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:12:56,330 INFO L225 Difference]: With dead ends: 68 [2023-12-02 16:12:56,330 INFO L226 Difference]: Without dead ends: 66 [2023-12-02 16:12:56,331 INFO L412 NwaCegarLoop]: 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 [2023-12-02 16:12:56,331 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 74 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:12:56,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 75 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:12:56,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-02 16:12:56,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2023-12-02 16:12:56,334 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) [2023-12-02 16:12:56,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2023-12-02 16:12:56,335 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 25 [2023-12-02 16:12:56,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:12:56,335 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2023-12-02 16:12:56,336 INFO L496 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) [2023-12-02 16:12:56,336 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2023-12-02 16:12:56,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 16:12:56,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:56,337 INFO L195 NwaCegarLoop]: 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] [2023-12-02 16:12:56,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 16:12:56,337 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:12:56,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:56,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1382329080, now seen corresponding path program 1 times [2023-12-02 16:12:56,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:56,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013892367] [2023-12-02 16:12:56,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:56,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:56,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 16:12:56,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:12:56,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013892367] [2023-12-02 16:12:56,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013892367] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:12:56,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335185380] [2023-12-02 16:12:56,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:56,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:12:56,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:12:56,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:12:56,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 16:12:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:56,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 16:12:56,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:12:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 16:12:56,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:12:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 16:12:56,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335185380] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:12:56,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [948142777] [2023-12-02 16:12:56,565 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-12-02 16:12:56,565 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:12:56,565 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:12:56,565 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:12:56,566 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:12:56,951 WARN L110 ntervalStateProvider]: Interval conversion did not stabilize in 20 iterations. Over-approximation may be very coarse. [2023-12-02 16:12:57,277 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:12:59,679 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2309#(and (<= 0 (+ |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 2147483648)) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~__tmp_3~0#1| 1) (= |ULTIMATE.start_main_~__tmp_4~0#1| 1) (<= 2 |ULTIMATE.start_main_~main__urilen~0#1|) (= |ULTIMATE.start_main_~__tmp_1~0#1| 1) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~3#1| 1) (<= |ULTIMATE.start_main_~main__urilen~0#1| 1000000) (<= |ULTIMATE.start_main_~main__tokenlen~0#1| 1000000) (= |ULTIMATE.start_main_~__tmp_5~0#1| 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 1) (<= |ULTIMATE.start_main_~main__scheme~0#1| 999999) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 2147483647) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 2147483648)) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~4#1| 0) (<= |ULTIMATE.start_main_~main__urilen~0#1| |ULTIMATE.start_main_~main__cp~0#1|) (= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= 1 |ULTIMATE.start_main_~main__scheme~0#1|) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1) (= ~__return_main~0 0) (<= 1 |ULTIMATE.start_main_~main__tokenlen~0#1|) (= ~__return_375~0 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~1#1| 1) (not (= |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 0)))' at error location [2023-12-02 16:12:59,680 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:12:59,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:12:59,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2023-12-02 16:12:59,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188726600] [2023-12-02 16:12:59,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:12:59,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:12:59,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:59,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:12:59,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2023-12-02 16:12:59,681 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) [2023-12-02 16:12:59,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:12:59,730 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2023-12-02 16:12:59,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:12:59,730 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 [2023-12-02 16:12:59,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:12:59,731 INFO L225 Difference]: With dead ends: 66 [2023-12-02 16:12:59,731 INFO L226 Difference]: Without dead ends: 64 [2023-12-02 16:12:59,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2023-12-02 16:12:59,732 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 154 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:12:59,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 63 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:12:59,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-02 16:12:59,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2023-12-02 16:12:59,735 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) [2023-12-02 16:12:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2023-12-02 16:12:59,735 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 26 [2023-12-02 16:12:59,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:12:59,735 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2023-12-02 16:12:59,736 INFO L496 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) [2023-12-02 16:12:59,736 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2023-12-02 16:12:59,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 16:12:59,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:59,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:12:59,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 16:12:59,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:12:59,937 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:12:59,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:59,938 INFO L85 PathProgramCache]: Analyzing trace with hash -540521971, now seen corresponding path program 1 times [2023-12-02 16:12:59,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:59,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441854615] [2023-12-02 16:12:59,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:59,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:13:00,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:00,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441854615] [2023-12-02 16:13:00,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441854615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:00,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:00,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:13:00,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884112863] [2023-12-02 16:13:00,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:00,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:13:00,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:00,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:13:00,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:13:00,005 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) [2023-12-02 16:13:00,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:00,051 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2023-12-02 16:13:00,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:13:00,052 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 [2023-12-02 16:13:00,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:00,052 INFO L225 Difference]: With dead ends: 59 [2023-12-02 16:13:00,053 INFO L226 Difference]: Without dead ends: 57 [2023-12-02 16:13:00,053 INFO L412 NwaCegarLoop]: 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 [2023-12-02 16:13:00,054 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 112 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:00,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 63 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:13:00,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-02 16:13:00,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-12-02 16:13:00,056 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) [2023-12-02 16:13:00,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2023-12-02 16:13:00,056 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 26 [2023-12-02 16:13:00,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:00,057 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2023-12-02 16:13:00,057 INFO L496 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) [2023-12-02 16:13:00,057 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2023-12-02 16:13:00,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 16:13:00,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:00,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:13:00,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 16:13:00,059 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:13:00,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:00,059 INFO L85 PathProgramCache]: Analyzing trace with hash -853579786, now seen corresponding path program 1 times [2023-12-02 16:13:00,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:00,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13590348] [2023-12-02 16:13:00,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:00,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:13:00,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:00,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13590348] [2023-12-02 16:13:00,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13590348] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:00,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:00,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:13:00,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700490187] [2023-12-02 16:13:00,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:00,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:13:00,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:00,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:13:00,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:13:00,154 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) [2023-12-02 16:13:00,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:00,205 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2023-12-02 16:13:00,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:13:00,205 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 [2023-12-02 16:13:00,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:00,206 INFO L225 Difference]: With dead ends: 58 [2023-12-02 16:13:00,206 INFO L226 Difference]: Without dead ends: 56 [2023-12-02 16:13:00,206 INFO L412 NwaCegarLoop]: 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 [2023-12-02 16:13:00,207 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 87 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:00,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 61 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:13:00,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-02 16:13:00,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2023-12-02 16:13:00,209 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) [2023-12-02 16:13:00,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2023-12-02 16:13:00,210 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 29 [2023-12-02 16:13:00,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:00,210 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2023-12-02 16:13:00,210 INFO L496 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) [2023-12-02 16:13:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2023-12-02 16:13:00,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 16:13:00,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:00,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:13:00,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 16:13:00,211 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:13:00,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:00,212 INFO L85 PathProgramCache]: Analyzing trace with hash -691165415, now seen corresponding path program 1 times [2023-12-02 16:13:00,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:00,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489649759] [2023-12-02 16:13:00,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:00,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:00,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:13:00,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:00,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489649759] [2023-12-02 16:13:00,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489649759] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:00,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:00,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:13:00,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491781080] [2023-12-02 16:13:00,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:00,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:13:00,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:00,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:13:00,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:13:00,288 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) [2023-12-02 16:13:00,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:00,359 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2023-12-02 16:13:00,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:13:00,360 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 [2023-12-02 16:13:00,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:00,360 INFO L225 Difference]: With dead ends: 66 [2023-12-02 16:13:00,360 INFO L226 Difference]: Without dead ends: 64 [2023-12-02 16:13:00,361 INFO L412 NwaCegarLoop]: 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 [2023-12-02 16:13:00,361 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 103 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:00,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 80 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:13:00,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-02 16:13:00,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 53. [2023-12-02 16:13:00,364 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) [2023-12-02 16:13:00,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2023-12-02 16:13:00,364 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 30 [2023-12-02 16:13:00,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:00,364 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2023-12-02 16:13:00,365 INFO L496 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) [2023-12-02 16:13:00,365 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2023-12-02 16:13:00,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 16:13:00,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:00,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:13:00,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 16:13:00,366 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:13:00,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:00,366 INFO L85 PathProgramCache]: Analyzing trace with hash -431604608, now seen corresponding path program 1 times [2023-12-02 16:13:00,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:00,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697039059] [2023-12-02 16:13:00,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:00,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:00,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:13:00,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:00,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697039059] [2023-12-02 16:13:00,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697039059] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:00,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:00,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:13:00,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24019699] [2023-12-02 16:13:00,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:00,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:13:00,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:00,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:13:00,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:13:00,438 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) [2023-12-02 16:13:00,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:00,513 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2023-12-02 16:13:00,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:13:00,514 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 [2023-12-02 16:13:00,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:00,514 INFO L225 Difference]: With dead ends: 86 [2023-12-02 16:13:00,515 INFO L226 Difference]: Without dead ends: 84 [2023-12-02 16:13:00,515 INFO L412 NwaCegarLoop]: 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 [2023-12-02 16:13:00,516 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 94 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:00,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 112 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:13:00,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-02 16:13:00,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 56. [2023-12-02 16:13:00,518 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) [2023-12-02 16:13:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2023-12-02 16:13:00,518 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 33 [2023-12-02 16:13:00,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:00,518 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2023-12-02 16:13:00,519 INFO L496 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) [2023-12-02 16:13:00,519 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2023-12-02 16:13:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 16:13:00,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:00,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:13:00,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 16:13:00,520 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:13:00,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:00,520 INFO L85 PathProgramCache]: Analyzing trace with hash -494836764, now seen corresponding path program 1 times [2023-12-02 16:13:00,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:00,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123006821] [2023-12-02 16:13:00,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:00,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:00,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:13:00,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:00,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123006821] [2023-12-02 16:13:00,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123006821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:00,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:00,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:13:00,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688206259] [2023-12-02 16:13:00,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:00,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:13:00,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:00,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:13:00,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:13:00,587 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) [2023-12-02 16:13:00,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:00,651 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2023-12-02 16:13:00,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:13:00,651 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 [2023-12-02 16:13:00,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:00,652 INFO L225 Difference]: With dead ends: 56 [2023-12-02 16:13:00,652 INFO L226 Difference]: Without dead ends: 54 [2023-12-02 16:13:00,652 INFO L412 NwaCegarLoop]: 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 [2023-12-02 16:13:00,653 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 59 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:00,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 104 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:13:00,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-02 16:13:00,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-02 16:13:00,655 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) [2023-12-02 16:13:00,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2023-12-02 16:13:00,655 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 34 [2023-12-02 16:13:00,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:00,655 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2023-12-02 16:13:00,656 INFO L496 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) [2023-12-02 16:13:00,656 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2023-12-02 16:13:00,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 16:13:00,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:00,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:13:00,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 16:13:00,657 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:13:00,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:00,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1203370183, now seen corresponding path program 1 times [2023-12-02 16:13:00,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:00,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706492931] [2023-12-02 16:13:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:00,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:00,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:13:00,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:00,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706492931] [2023-12-02 16:13:00,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706492931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:00,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:00,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:13:00,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660204714] [2023-12-02 16:13:00,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:00,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:13:00,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:00,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:13:00,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:13:00,723 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) [2023-12-02 16:13:00,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:00,743 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2023-12-02 16:13:00,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:13:00,743 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 [2023-12-02 16:13:00,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:00,744 INFO L225 Difference]: With dead ends: 65 [2023-12-02 16:13:00,744 INFO L226 Difference]: Without dead ends: 63 [2023-12-02 16:13:00,744 INFO L412 NwaCegarLoop]: 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 [2023-12-02 16:13:00,745 INFO L413 NwaCegarLoop]: 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 [2023-12-02 16:13:00,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 138 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:13:00,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-02 16:13:00,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2023-12-02 16:13:00,747 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) [2023-12-02 16:13:00,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2023-12-02 16:13:00,748 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 36 [2023-12-02 16:13:00,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:00,748 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2023-12-02 16:13:00,748 INFO L496 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) [2023-12-02 16:13:00,748 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2023-12-02 16:13:00,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 16:13:00,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:00,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:13:00,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 16:13:00,749 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:13:00,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:00,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1350225778, now seen corresponding path program 1 times [2023-12-02 16:13:00,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:00,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784468174] [2023-12-02 16:13:00,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:00,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:13:00,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:00,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784468174] [2023-12-02 16:13:00,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784468174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:00,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:00,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:13:00,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222178417] [2023-12-02 16:13:00,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:00,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:13:00,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:00,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:13:00,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:13:00,827 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) [2023-12-02 16:13:00,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:00,849 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2023-12-02 16:13:00,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:13:00,850 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 [2023-12-02 16:13:00,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:00,850 INFO L225 Difference]: With dead ends: 61 [2023-12-02 16:13:00,850 INFO L226 Difference]: Without dead ends: 59 [2023-12-02 16:13:00,851 INFO L412 NwaCegarLoop]: 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 [2023-12-02 16:13:00,851 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 36 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:00,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 167 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:13:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-02 16:13:00,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2023-12-02 16:13:00,853 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) [2023-12-02 16:13:00,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2023-12-02 16:13:00,854 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 37 [2023-12-02 16:13:00,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:00,854 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2023-12-02 16:13:00,854 INFO L496 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) [2023-12-02 16:13:00,854 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2023-12-02 16:13:00,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 16:13:00,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:00,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:13:00,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-02 16:13:00,855 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:13:00,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:00,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1092678062, now seen corresponding path program 1 times [2023-12-02 16:13:00,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:00,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925418218] [2023-12-02 16:13:00,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:00,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:13:00,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:00,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925418218] [2023-12-02 16:13:00,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925418218] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:00,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:00,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:13:00,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468336082] [2023-12-02 16:13:00,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:00,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:13:00,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:00,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:13:00,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:13:00,933 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) [2023-12-02 16:13:01,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:01,018 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2023-12-02 16:13:01,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:13:01,018 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 [2023-12-02 16:13:01,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:01,019 INFO L225 Difference]: With dead ends: 83 [2023-12-02 16:13:01,019 INFO L226 Difference]: Without dead ends: 81 [2023-12-02 16:13:01,020 INFO L412 NwaCegarLoop]: 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 [2023-12-02 16:13:01,020 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 53 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:01,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 120 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:13:01,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-02 16:13:01,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 55. [2023-12-02 16:13:01,023 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) [2023-12-02 16:13:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2023-12-02 16:13:01,023 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 38 [2023-12-02 16:13:01,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:01,023 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2023-12-02 16:13:01,023 INFO L496 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) [2023-12-02 16:13:01,024 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2023-12-02 16:13:01,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 16:13:01,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:01,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:13:01,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-02 16:13:01,024 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:13:01,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:01,025 INFO L85 PathProgramCache]: Analyzing trace with hash -486714219, now seen corresponding path program 1 times [2023-12-02 16:13:01,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:01,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354133272] [2023-12-02 16:13:01,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:01,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:01,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:13:01,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:01,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354133272] [2023-12-02 16:13:01,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354133272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:01,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:01,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:13:01,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828716614] [2023-12-02 16:13:01,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:01,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:13:01,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:01,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:13:01,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:13:01,096 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) [2023-12-02 16:13:01,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:01,151 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2023-12-02 16:13:01,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:13:01,151 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 [2023-12-02 16:13:01,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:01,152 INFO L225 Difference]: With dead ends: 68 [2023-12-02 16:13:01,152 INFO L226 Difference]: Without dead ends: 66 [2023-12-02 16:13:01,152 INFO L412 NwaCegarLoop]: 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 [2023-12-02 16:13:01,153 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 36 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:01,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 114 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:13:01,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-02 16:13:01,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2023-12-02 16:13:01,155 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) [2023-12-02 16:13:01,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2023-12-02 16:13:01,156 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 39 [2023-12-02 16:13:01,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:01,156 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2023-12-02 16:13:01,156 INFO L496 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) [2023-12-02 16:13:01,156 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2023-12-02 16:13:01,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 16:13:01,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:01,157 INFO L195 NwaCegarLoop]: 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] [2023-12-02 16:13:01,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-02 16:13:01,157 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:13:01,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:01,158 INFO L85 PathProgramCache]: Analyzing trace with hash 449608968, now seen corresponding path program 1 times [2023-12-02 16:13:01,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:01,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980051020] [2023-12-02 16:13:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:01,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:01,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:13:01,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:01,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980051020] [2023-12-02 16:13:01,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980051020] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:13:01,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770039206] [2023-12-02 16:13:01,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:01,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:13:01,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:13:01,285 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:13:01,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 16:13:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:01,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 16:13:01,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:13:01,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:13:01,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:13:01,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:13:01,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770039206] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:13:01,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2002458378] [2023-12-02 16:13:01,446 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 16:13:01,446 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:13:01,447 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:13:01,447 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:13:01,447 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:13:01,743 WARN L110 ntervalStateProvider]: Interval conversion did not stabilize in 20 iterations. Over-approximation may be very coarse. [2023-12-02 16:13:02,426 WARN L110 ntervalStateProvider]: Interval conversion did not stabilize in 34 iterations. Over-approximation may be very coarse. [2023-12-02 16:13:02,980 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:13:08,216 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3862#(and (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~10#1| 0) (<= 0 (+ |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 2147483648)) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~__tmp_3~0#1| 1) (= |ULTIMATE.start_main_~__tmp_4~0#1| 1) (= |ULTIMATE.start_main_~__tmp_1~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~main____CPAchecker_TMP_2~0#1| 2147483648)) (= |ULTIMATE.start_main_~__tmp_9~0#1| 1) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~3#1| 1) (<= |ULTIMATE.start_main_~main__tokenlen~0#1| 1000000) (= |ULTIMATE.start_main_~__tmp_5~0#1| 1) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_2~0#1| 2147483647) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~2#1| 1) (<= 0 |ULTIMATE.start_main_~__tmp_11~0#1|) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 2147483647) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~4#1| 1) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~6#1| 1) (= |ULTIMATE.start_main_~__tmp_7~0#1| 1) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~8#1| 1) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 2147483647) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~9#1| 1) (<= 0 (+ |ULTIMATE.start_main_~main____CPAchecker_TMP_1~0#1| 2147483648)) (= |ULTIMATE.start_main_~__tmp_6~0#1| 1) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~7#1| 1) (= |ULTIMATE.start_main_~__tmp_10~0#1| 1) (<= 2 |ULTIMATE.start_main_~main__tokenlen~0#1|) (= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (= |ULTIMATE.start_main_~__tmp_8~0#1| 1) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1| 1) (= ~__return_main~0 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~5#1| 1) (= ~__return_375~0 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__cond~1#1| 1) (= |ULTIMATE.start_main_~main__c~0#1| 0))' at error location [2023-12-02 16:13:08,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 16:13:08,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:13:08,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2023-12-02 16:13:08,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557133295] [2023-12-02 16:13:08,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:13:08,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:13:08,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:08,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:13:08,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1127, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 16:13:08,219 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) [2023-12-02 16:13:08,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:08,280 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2023-12-02 16:13:08,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:13:08,280 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 [2023-12-02 16:13:08,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:08,281 INFO L225 Difference]: With dead ends: 53 [2023-12-02 16:13:08,281 INFO L226 Difference]: Without dead ends: 51 [2023-12-02 16:13:08,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 77 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=291, Invalid=1269, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 16:13:08,283 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 42 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:08,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 50 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:13:08,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-02 16:13:08,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-02 16:13:08,285 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) [2023-12-02 16:13:08,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2023-12-02 16:13:08,285 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 39 [2023-12-02 16:13:08,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:08,286 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2023-12-02 16:13:08,286 INFO L496 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) [2023-12-02 16:13:08,286 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2023-12-02 16:13:08,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 16:13:08,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:08,286 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:13:08,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 16:13:08,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:13:08,487 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] === [2023-12-02 16:13:08,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:08,488 INFO L85 PathProgramCache]: Analyzing trace with hash 244696614, now seen corresponding path program 1 times [2023-12-02 16:13:08,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:08,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382501038] [2023-12-02 16:13:08,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:08,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:08,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 16:13:08,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:08,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382501038] [2023-12-02 16:13:08,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382501038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:08,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:08,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:13:08,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910071013] [2023-12-02 16:13:08,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:08,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:13:08,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:08,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:13:08,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:13:08,558 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) [2023-12-02 16:13:08,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:08,640 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2023-12-02 16:13:08,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 16:13:08,641 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 [2023-12-02 16:13:08,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:08,641 INFO L225 Difference]: With dead ends: 70 [2023-12-02 16:13:08,641 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 16:13:08,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:13:08,642 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 37 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:08,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 81 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:13:08,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 16:13:08,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 16:13:08,643 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) [2023-12-02 16:13:08,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 16:13:08,643 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2023-12-02 16:13:08,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:08,644 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 16:13:08,644 INFO L496 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) [2023-12-02 16:13:08,644 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 16:13:08,644 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 16:13:08,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (17 of 18 remaining) [2023-12-02 16:13:08,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (16 of 18 remaining) [2023-12-02 16:13:08,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (15 of 18 remaining) [2023-12-02 16:13:08,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (14 of 18 remaining) [2023-12-02 16:13:08,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (13 of 18 remaining) [2023-12-02 16:13:08,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (12 of 18 remaining) [2023-12-02 16:13:08,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (11 of 18 remaining) [2023-12-02 16:13:08,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (10 of 18 remaining) [2023-12-02 16:13:08,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (9 of 18 remaining) [2023-12-02 16:13:08,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (8 of 18 remaining) [2023-12-02 16:13:08,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (7 of 18 remaining) [2023-12-02 16:13:08,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (6 of 18 remaining) [2023-12-02 16:13:08,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (5 of 18 remaining) [2023-12-02 16:13:08,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION (4 of 18 remaining) [2023-12-02 16:13:08,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION (3 of 18 remaining) [2023-12-02 16:13:08,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION (2 of 18 remaining) [2023-12-02 16:13:08,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION (1 of 18 remaining) [2023-12-02 16:13:08,649 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION (0 of 18 remaining) [2023-12-02 16:13:08,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-02 16:13:08,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 16:13:08,653 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 97) no Hoare annotation was computed. [2023-12-02 16:13:08,654 INFO L899 garLoopResultBuilder]: For program point L85(line 85) no Hoare annotation was computed. [2023-12-02 16:13:08,654 INFO L899 garLoopResultBuilder]: For program point L234(lines 234 338) no Hoare annotation was computed. [2023-12-02 16:13:08,654 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 272) no Hoare annotation was computed. [2023-12-02 16:13:08,654 INFO L899 garLoopResultBuilder]: For program point L135(lines 135 397) no Hoare annotation was computed. [2023-12-02 16:13:08,654 INFO L899 garLoopResultBuilder]: For program point L284(line 284) no Hoare annotation was computed. [2023-12-02 16:13:08,654 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 433) no Hoare annotation was computed. [2023-12-02 16:13:08,654 INFO L899 garLoopResultBuilder]: For program point L384(lines 384 393) no Hoare annotation was computed. [2023-12-02 16:13:08,655 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 255) no Hoare annotation was computed. [2023-12-02 16:13:08,655 INFO L899 garLoopResultBuilder]: For program point L137(lines 131 402) no Hoare annotation was computed. [2023-12-02 16:13:08,655 INFO L899 garLoopResultBuilder]: For program point L104(lines 104 411) no Hoare annotation was computed. [2023-12-02 16:13:08,655 INFO L899 garLoopResultBuilder]: For program point L71(lines 71 416) no Hoare annotation was computed. [2023-12-02 16:13:08,655 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2023-12-02 16:13:08,655 INFO L899 garLoopResultBuilder]: For program point L253(lines 253 329) no Hoare annotation was computed. [2023-12-02 16:13:08,655 INFO L899 garLoopResultBuilder]: For program point L187(lines 187 355) no Hoare annotation was computed. [2023-12-02 16:13:08,655 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 386) no Hoare annotation was computed. [2023-12-02 16:13:08,655 INFO L899 garLoopResultBuilder]: For program point L270(lines 270 322) no Hoare annotation was computed. [2023-12-02 16:13:08,655 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 353) no Hoare annotation was computed. [2023-12-02 16:13:08,656 INFO L899 garLoopResultBuilder]: For program point L386(line 386) no Hoare annotation was computed. [2023-12-02 16:13:08,656 INFO L899 garLoopResultBuilder]: For program point L155(lines 155 360) no Hoare annotation was computed. [2023-12-02 16:13:08,656 INFO L899 garLoopResultBuilder]: For program point L23(lines 23 438) no Hoare annotation was computed. [2023-12-02 16:13:08,656 INFO L899 garLoopResultBuilder]: For program point L255(line 255) no Hoare annotation was computed. [2023-12-02 16:13:08,656 INFO L899 garLoopResultBuilder]: For program point L189(line 189) no Hoare annotation was computed. [2023-12-02 16:13:08,656 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 403) no Hoare annotation was computed. [2023-12-02 16:13:08,656 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 214) no Hoare annotation was computed. [2023-12-02 16:13:08,656 INFO L899 garLoopResultBuilder]: For program point L272(line 272) no Hoare annotation was computed. [2023-12-02 16:13:08,656 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 435) no Hoare annotation was computed. [2023-12-02 16:13:08,656 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 16:13:08,656 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 189) no Hoare annotation was computed. [2023-12-02 16:13:08,657 INFO L899 garLoopResultBuilder]: For program point L157(line 157) no Hoare annotation was computed. [2023-12-02 16:13:08,657 INFO L899 garLoopResultBuilder]: For program point L372(lines 372 395) no Hoare annotation was computed. [2023-12-02 16:13:08,657 INFO L899 garLoopResultBuilder]: For program point L306(lines 306 316) no Hoare annotation was computed. [2023-12-02 16:13:08,657 INFO L899 garLoopResultBuilder]: For program point $Ultimate##56(lines 232 343) no Hoare annotation was computed. [2023-12-02 16:13:08,657 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 344) no Hoare annotation was computed. [2023-12-02 16:13:08,657 INFO L899 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2023-12-02 16:13:08,657 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 432) no Hoare annotation was computed. [2023-12-02 16:13:08,657 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2023-12-02 16:13:08,657 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 331) no Hoare annotation was computed. [2023-12-02 16:13:08,657 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 357) no Hoare annotation was computed. [2023-12-02 16:13:08,658 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 284) no Hoare annotation was computed. [2023-12-02 16:13:08,658 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 226) no Hoare annotation was computed. [2023-12-02 16:13:08,658 INFO L899 garLoopResultBuilder]: For program point L374(line 374) no Hoare annotation was computed. [2023-12-02 16:13:08,658 INFO L899 garLoopResultBuilder]: For program point L308(line 308) no Hoare annotation was computed. [2023-12-02 16:13:08,658 INFO L899 garLoopResultBuilder]: For program point L143(lines 143 362) no Hoare annotation was computed. [2023-12-02 16:13:08,658 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 13 439) no Hoare annotation was computed. [2023-12-02 16:13:08,658 INFO L899 garLoopResultBuilder]: For program point $Ultimate##34(lines 131 402) no Hoare annotation was computed. [2023-12-02 16:13:08,658 INFO L899 garLoopResultBuilder]: For program point L226(line 226) no Hoare annotation was computed. [2023-12-02 16:13:08,658 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 145) no Hoare annotation was computed. [2023-12-02 16:13:08,659 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 427) no Hoare annotation was computed. [2023-12-02 16:13:08,659 INFO L899 garLoopResultBuilder]: For program point L243(line 243) no Hoare annotation was computed. [2023-12-02 16:13:08,659 INFO L899 garLoopResultBuilder]: For program point L177(line 177) no Hoare annotation was computed. [2023-12-02 16:13:08,659 INFO L899 garLoopResultBuilder]: For program point L111(lines 111 405) no Hoare annotation was computed. [2023-12-02 16:13:08,659 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 308) no Hoare annotation was computed. [2023-12-02 16:13:08,659 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 354) no Hoare annotation was computed. [2023-12-02 16:13:08,659 INFO L899 garLoopResultBuilder]: For program point L95(lines 95 412) no Hoare annotation was computed. [2023-12-02 16:13:08,659 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 437) no Hoare annotation was computed. [2023-12-02 16:13:08,659 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2023-12-02 16:13:08,659 INFO L899 garLoopResultBuilder]: For program point L145(line 145) no Hoare annotation was computed. [2023-12-02 16:13:08,660 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 296) no Hoare annotation was computed. [2023-12-02 16:13:08,660 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 16:13:08,660 INFO L899 garLoopResultBuilder]: For program point L294(lines 294 318) no Hoare annotation was computed. [2023-12-02 16:13:08,660 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 359) no Hoare annotation was computed. [2023-12-02 16:13:08,660 INFO L899 garLoopResultBuilder]: For program point L63(lines 63 422) no Hoare annotation was computed. [2023-12-02 16:13:08,660 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 346) no Hoare annotation was computed. [2023-12-02 16:13:08,660 INFO L899 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2023-12-02 16:13:08,660 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 434) no Hoare annotation was computed. [2023-12-02 16:13:08,661 INFO L899 garLoopResultBuilder]: For program point L262(lines 262 328) no Hoare annotation was computed. [2023-12-02 16:13:08,661 INFO L899 garLoopResultBuilder]: For program point L97(line 97) no Hoare annotation was computed. [2023-12-02 16:13:08,661 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 157) no Hoare annotation was computed. [2023-12-02 16:13:08,661 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 374) no Hoare annotation was computed. [2023-12-02 16:13:08,661 INFO L899 garLoopResultBuilder]: For program point L296(line 296) no Hoare annotation was computed. [2023-12-02 16:13:08,661 INFO L899 garLoopResultBuilder]: For program point L164(lines 162 359) no Hoare annotation was computed. [2023-12-02 16:13:08,661 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 417) no Hoare annotation was computed. [2023-12-02 16:13:08,661 INFO L899 garLoopResultBuilder]: For program point L313(lines 262 328) no Hoare annotation was computed. [2023-12-02 16:13:08,661 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 85) no Hoare annotation was computed. [2023-12-02 16:13:08,662 INFO L899 garLoopResultBuilder]: For program point L214(line 214) no Hoare annotation was computed. [2023-12-02 16:13:08,662 INFO L899 garLoopResultBuilder]: For program point L83(lines 83 414) no Hoare annotation was computed. [2023-12-02 16:13:08,662 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 243) no Hoare annotation was computed. [2023-12-02 16:13:08,662 INFO L899 garLoopResultBuilder]: For program point L282(lines 282 320) no Hoare annotation was computed. [2023-12-02 16:13:08,662 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 436) no Hoare annotation was computed. [2023-12-02 16:13:08,665 INFO L445 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] [2023-12-02 16:13:08,666 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:13:08,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:13:08 BoogieIcfgContainer [2023-12-02 16:13:08,671 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:13:08,671 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:13:08,671 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:13:08,671 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:13:08,672 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:12:49" (3/4) ... [2023-12-02 16:13:08,673 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 16:13:08,682 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-12-02 16:13:08,683 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-12-02 16:13:08,684 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 16:13:08,684 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 16:13:08,777 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 16:13:08,777 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 16:13:08,777 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:13:08,778 INFO L158 Benchmark]: Toolchain (without parser) took 19713.20ms. Allocated memory was 132.1MB in the beginning and 243.3MB in the end (delta: 111.1MB). Free memory was 86.7MB in the beginning and 132.9MB in the end (delta: -46.2MB). Peak memory consumption was 65.4MB. Max. memory is 16.1GB. [2023-12-02 16:13:08,779 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 132.1MB. Free memory is still 101.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:13:08,779 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.02ms. Allocated memory is still 132.1MB. Free memory was 86.7MB in the beginning and 64.7MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 16:13:08,779 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.13ms. Allocated memory is still 132.1MB. Free memory was 64.7MB in the beginning and 62.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:13:08,780 INFO L158 Benchmark]: Boogie Preprocessor took 28.56ms. Allocated memory is still 132.1MB. Free memory was 62.5MB in the beginning and 61.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:13:08,780 INFO L158 Benchmark]: RCFGBuilder took 450.60ms. Allocated memory was 132.1MB in the beginning and 167.8MB in the end (delta: 35.7MB). Free memory was 61.0MB in the beginning and 136.3MB in the end (delta: -75.2MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2023-12-02 16:13:08,781 INFO L158 Benchmark]: TraceAbstraction took 18773.12ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 135.3MB in the beginning and 139.2MB in the end (delta: -3.9MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. [2023-12-02 16:13:08,781 INFO L158 Benchmark]: Witness Printer took 106.60ms. Allocated memory is still 243.3MB. Free memory was 139.2MB in the beginning and 132.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 16:13:08,783 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 132.1MB. Free memory is still 101.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.02ms. Allocated memory is still 132.1MB. Free memory was 86.7MB in the beginning and 64.7MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.13ms. Allocated memory is still 132.1MB. Free memory was 64.7MB in the beginning and 62.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.56ms. Allocated memory is still 132.1MB. Free memory was 62.5MB in the beginning and 61.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 450.60ms. Allocated memory was 132.1MB in the beginning and 167.8MB in the end (delta: 35.7MB). Free memory was 61.0MB in the beginning and 136.3MB in the end (delta: -75.2MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. * TraceAbstraction took 18773.12ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 135.3MB in the beginning and 139.2MB in the end (delta: -3.9MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. * Witness Printer took 106.60ms. Allocated memory is still 243.3MB. Free memory was 139.2MB in the beginning and 132.9MB in the end (delta: 6.3MB). 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]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 97]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 113]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 125]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 145]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 157]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 177]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 189]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 214]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 226]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 243]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 255]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 272]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 284]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 296]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 308]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 374]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 386]: a call to reach_error is unreachable For all program executions holds that a 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: 18.7s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2071 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2071 mSDsluCounter, 2580 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1387 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1184 IncrementalHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 1193 mSDtfsCounter, 1184 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 426 GetRequests, 221 SyntacticMatches, 18 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 11.0s 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: 0.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 295 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 725 NumberOfCodeBlocks, 725 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 786 ConstructedInterpolants, 0 QuantifiedInterpolants, 1948 SizeOfPredicates, 12 NumberOfNonLiveVariables, 330 ConjunctsInSsa, 32 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 RESULT: Ultimate proved your program to be correct! [2023-12-02 16:13:08,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f7d1cbe-2b59-4d3a-ac5e-ae268e1ded17/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE