./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-queue-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-queue-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c858394bc83ab2c402eb20052f936c0a6aa98b2b6b6c704be79c039778bcff97 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-queue-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c858394bc83ab2c402eb20052f936c0a6aa98b2b6b6c704be79c039778bcff97 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:41:50,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:41:50,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:41:50,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:41:50,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:41:50,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:41:50,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:41:50,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:41:50,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:41:50,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:41:50,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:41:50,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:41:50,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:41:50,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:41:50,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:41:50,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:41:50,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:41:50,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:41:50,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:41:50,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:41:50,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:41:50,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:41:50,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:41:50,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:41:50,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:41:50,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:41:50,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:41:50,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:41:50,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:41:50,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:41:50,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:41:50,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:41:50,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:41:50,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:41:50,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:41:50,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:41:50,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:41:50,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:41:50,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:41:50,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:41:50,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:41:50,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:41:50,973 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:41:50,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:41:50,974 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:41:50,974 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:41:50,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:41:50,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:41:50,982 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:41:50,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:41:50,983 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:41:50,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:41:50,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:41:50,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:41:50,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:41:50,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:41:50,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:41:50,985 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:41:50,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:41:50,986 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:41:50,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:41:50,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:41:50,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:41:50,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:41:50,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:41:50,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:41:50,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:41:50,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:41:50,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:41:50,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:41:50,989 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:41:50,989 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:41:50,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:41:50,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:41:50,990 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c858394bc83ab2c402eb20052f936c0a6aa98b2b6b6c704be79c039778bcff97 [2021-10-28 09:41:51,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:41:51,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:41:51,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:41:51,284 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:41:51,285 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:41:51,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/forester-heap/dll-queue-1.i [2021-10-28 09:41:51,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/data/13e206713/525d630cdbba41a2b7d14e322eb96711/FLAGa7d2ace61 [2021-10-28 09:41:51,895 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:41:51,896 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i [2021-10-28 09:41:51,923 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/data/13e206713/525d630cdbba41a2b7d14e322eb96711/FLAGa7d2ace61 [2021-10-28 09:41:52,179 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/data/13e206713/525d630cdbba41a2b7d14e322eb96711 [2021-10-28 09:41:52,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:41:52,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:41:52,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:41:52,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:41:52,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:41:52,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:41:52" (1/1) ... [2021-10-28 09:41:52,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6436ad4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:41:52, skipping insertion in model container [2021-10-28 09:41:52,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:41:52" (1/1) ... [2021-10-28 09:41:52,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:41:52,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:41:52,602 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22460,22473] [2021-10-28 09:41:52,606 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22531,22544] [2021-10-28 09:41:52,607 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22605,22618] [2021-10-28 09:41:52,608 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22697,22710] [2021-10-28 09:41:52,609 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22774,22787] [2021-10-28 09:41:52,610 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22869,22882] [2021-10-28 09:41:52,611 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22946,22959] [2021-10-28 09:41:52,612 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23029,23042] [2021-10-28 09:41:52,613 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23124,23137] [2021-10-28 09:41:52,614 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23201,23214] [2021-10-28 09:41:52,615 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23284,23297] [2021-10-28 09:41:52,617 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23373,23386] [2021-10-28 09:41:52,618 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23459,23472] [2021-10-28 09:41:52,619 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23604,23617] [2021-10-28 09:41:52,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:41:52,632 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:41:52,681 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22460,22473] [2021-10-28 09:41:52,682 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22531,22544] [2021-10-28 09:41:52,687 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22605,22618] [2021-10-28 09:41:52,688 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22697,22710] [2021-10-28 09:41:52,691 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22774,22787] [2021-10-28 09:41:52,694 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22869,22882] [2021-10-28 09:41:52,695 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22946,22959] [2021-10-28 09:41:52,696 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23029,23042] [2021-10-28 09:41:52,698 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23124,23137] [2021-10-28 09:41:52,701 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23201,23214] [2021-10-28 09:41:52,703 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23284,23297] [2021-10-28 09:41:52,705 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23373,23386] [2021-10-28 09:41:52,706 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23459,23472] [2021-10-28 09:41:52,709 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23604,23617] [2021-10-28 09:41:52,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:41:52,744 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:41:52,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:41:52 WrapperNode [2021-10-28 09:41:52,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:41:52,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:41:52,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:41:52,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:41:52,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:41:52" (1/1) ... [2021-10-28 09:41:52,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:41:52" (1/1) ... [2021-10-28 09:41:52,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:41:52,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:41:52,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:41:52,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:41:52,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:41:52" (1/1) ... [2021-10-28 09:41:52,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:41:52" (1/1) ... [2021-10-28 09:41:52,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:41:52" (1/1) ... [2021-10-28 09:41:52,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:41:52" (1/1) ... [2021-10-28 09:41:52,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:41:52" (1/1) ... [2021-10-28 09:41:52,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:41:52" (1/1) ... [2021-10-28 09:41:52,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:41:52" (1/1) ... [2021-10-28 09:41:52,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:41:52,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:41:52,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:41:52,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:41:52,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:41:52" (1/1) ... [2021-10-28 09:41:52,918 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:41:52,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:41:52,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:41:52,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:41:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:41:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:41:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:41:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:41:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:41:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:41:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:41:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:41:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:41:52,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:41:53,540 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:41:53,541 INFO L299 CfgBuilder]: Removed 35 assume(true) statements. [2021-10-28 09:41:53,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:41:53 BoogieIcfgContainer [2021-10-28 09:41:53,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:41:53,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:41:53,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:41:53,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:41:53,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:41:52" (1/3) ... [2021-10-28 09:41:53,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0d2417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:41:53, skipping insertion in model container [2021-10-28 09:41:53,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:41:52" (2/3) ... [2021-10-28 09:41:53,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0d2417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:41:53, skipping insertion in model container [2021-10-28 09:41:53,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:41:53" (3/3) ... [2021-10-28 09:41:53,551 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-queue-1.i [2021-10-28 09:41:53,556 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:41:53,557 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-28 09:41:53,603 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:41:53,609 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:41:53,609 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-10-28 09:41:53,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 70 states have (on average 2.0) internal successors, (140), 84 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:53,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-28 09:41:53,627 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:41:53,628 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-28 09:41:53,629 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:41:53,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:41:53,633 INFO L85 PathProgramCache]: Analyzing trace with hash 28752478, now seen corresponding path program 1 times [2021-10-28 09:41:53,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:41:53,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595616214] [2021-10-28 09:41:53,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:41:53,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:41:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:41:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:41:53,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:41:53,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595616214] [2021-10-28 09:41:53,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595616214] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:41:53,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:41:53,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:41:53,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286462157] [2021-10-28 09:41:53,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:41:53,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:41:53,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:41:53,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:41:53,813 INFO L87 Difference]: Start difference. First operand has 85 states, 70 states have (on average 2.0) internal successors, (140), 84 states have internal predecessors, (140), 0 states have call successors, (0), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:53,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:41:53,836 INFO L93 Difference]: Finished difference Result 168 states and 278 transitions. [2021-10-28 09:41:53,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:41:53,837 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-10-28 09:41:53,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:41:53,846 INFO L225 Difference]: With dead ends: 168 [2021-10-28 09:41:53,846 INFO L226 Difference]: Without dead ends: 80 [2021-10-28 09:41:53,849 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:41:53,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-28 09:41:53,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-28 09:41:53,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 79 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:53,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2021-10-28 09:41:53,884 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 5 [2021-10-28 09:41:53,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:41:53,885 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2021-10-28 09:41:53,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:53,885 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2021-10-28 09:41:53,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 09:41:53,886 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:41:53,886 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:41:53,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:41:53,886 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:41:53,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:41:53,887 INFO L85 PathProgramCache]: Analyzing trace with hash 889571111, now seen corresponding path program 1 times [2021-10-28 09:41:53,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:41:53,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179158801] [2021-10-28 09:41:53,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:41:53,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:41:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:41:53,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:41:53,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:41:53,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179158801] [2021-10-28 09:41:53,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179158801] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:41:53,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:41:53,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:41:53,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481775966] [2021-10-28 09:41:53,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:41:53,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:41:53,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:41:53,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:41:53,957 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:54,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:41:54,015 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2021-10-28 09:41:54,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:41:54,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-10-28 09:41:54,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:41:54,018 INFO L225 Difference]: With dead ends: 80 [2021-10-28 09:41:54,019 INFO L226 Difference]: Without dead ends: 70 [2021-10-28 09:41:54,021 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:41:54,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-28 09:41:54,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-10-28 09:41:54,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 61 states have (on average 1.2950819672131149) internal successors, (79), 69 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:54,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2021-10-28 09:41:54,035 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 6 [2021-10-28 09:41:54,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:41:54,035 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2021-10-28 09:41:54,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:54,037 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2021-10-28 09:41:54,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:41:54,038 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:41:54,038 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:41:54,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:41:54,038 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:41:54,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:41:54,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1270244236, now seen corresponding path program 1 times [2021-10-28 09:41:54,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:41:54,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15644202] [2021-10-28 09:41:54,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:41:54,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:41:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:41:54,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:41:54,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:41:54,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15644202] [2021-10-28 09:41:54,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15644202] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:41:54,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:41:54,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:41:54,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894251820] [2021-10-28 09:41:54,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:41:54,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:41:54,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:41:54,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:41:54,180 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:54,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:41:54,294 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2021-10-28 09:41:54,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:41:54,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-10-28 09:41:54,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:41:54,296 INFO L225 Difference]: With dead ends: 119 [2021-10-28 09:41:54,296 INFO L226 Difference]: Without dead ends: 117 [2021-10-28 09:41:54,297 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:41:54,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-28 09:41:54,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 68. [2021-10-28 09:41:54,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 67 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:54,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2021-10-28 09:41:54,305 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 9 [2021-10-28 09:41:54,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:41:54,305 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2021-10-28 09:41:54,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:54,306 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2021-10-28 09:41:54,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:41:54,307 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:41:54,307 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:41:54,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:41:54,307 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:41:54,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:41:54,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1286414876, now seen corresponding path program 1 times [2021-10-28 09:41:54,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:41:54,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948550585] [2021-10-28 09:41:54,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:41:54,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:41:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:41:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:41:54,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:41:54,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948550585] [2021-10-28 09:41:54,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948550585] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:41:54,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:41:54,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:41:54,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277107737] [2021-10-28 09:41:54,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:41:54,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:41:54,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:41:54,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:41:54,361 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:54,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:41:54,407 INFO L93 Difference]: Finished difference Result 153 states and 178 transitions. [2021-10-28 09:41:54,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:41:54,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-10-28 09:41:54,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:41:54,410 INFO L225 Difference]: With dead ends: 153 [2021-10-28 09:41:54,410 INFO L226 Difference]: Without dead ends: 87 [2021-10-28 09:41:54,412 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:41:54,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-28 09:41:54,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2021-10-28 09:41:54,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 75 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:54,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2021-10-28 09:41:54,436 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 12 [2021-10-28 09:41:54,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:41:54,437 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2021-10-28 09:41:54,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:54,437 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2021-10-28 09:41:54,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:41:54,438 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:41:54,438 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:41:54,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:41:54,439 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:41:54,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:41:54,441 INFO L85 PathProgramCache]: Analyzing trace with hash -138012862, now seen corresponding path program 1 times [2021-10-28 09:41:54,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:41:54,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814928352] [2021-10-28 09:41:54,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:41:54,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:41:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:41:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:41:54,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:41:54,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814928352] [2021-10-28 09:41:54,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814928352] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:41:54,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:41:54,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:41:54,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668565889] [2021-10-28 09:41:54,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:41:54,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:41:54,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:41:54,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:41:54,548 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:54,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:41:54,643 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2021-10-28 09:41:54,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:41:54,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-28 09:41:54,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:41:54,645 INFO L225 Difference]: With dead ends: 91 [2021-10-28 09:41:54,645 INFO L226 Difference]: Without dead ends: 71 [2021-10-28 09:41:54,645 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:41:54,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-28 09:41:54,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-10-28 09:41:54,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.253968253968254) internal successors, (79), 70 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2021-10-28 09:41:54,651 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 17 [2021-10-28 09:41:54,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:41:54,652 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2021-10-28 09:41:54,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:54,652 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2021-10-28 09:41:54,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:41:54,653 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:41:54,653 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:41:54,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:41:54,654 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:41:54,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:41:54,654 INFO L85 PathProgramCache]: Analyzing trace with hash -472870040, now seen corresponding path program 1 times [2021-10-28 09:41:54,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:41:54,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788520290] [2021-10-28 09:41:54,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:41:54,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:41:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:41:54,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:41:54,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:41:54,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788520290] [2021-10-28 09:41:54,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788520290] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:41:54,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805858001] [2021-10-28 09:41:54,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:41:54,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:41:54,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:41:54,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:41:54,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:41:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:41:54,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:41:54,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:41:54,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:41:55,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:41:55,119 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-10-28 09:41:55,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 43 [2021-10-28 09:41:55,132 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 09:41:55,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 40 [2021-10-28 09:41:55,257 INFO L354 Elim1Store]: treesize reduction 100, result has 21.9 percent of original size [2021-10-28 09:41:55,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 64 [2021-10-28 09:41:56,070 INFO L354 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2021-10-28 09:41:56,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 38 [2021-10-28 09:41:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:41:56,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805858001] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:41:56,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:41:56,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-10-28 09:41:56,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236863076] [2021-10-28 09:41:56,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:41:56,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:41:56,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:41:56,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:41:56,117 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:56,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:41:56,367 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2021-10-28 09:41:56,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:41:56,368 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 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 19 [2021-10-28 09:41:56,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:41:56,369 INFO L225 Difference]: With dead ends: 134 [2021-10-28 09:41:56,369 INFO L226 Difference]: Without dead ends: 132 [2021-10-28 09:41:56,370 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:41:56,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-28 09:41:56,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 84. [2021-10-28 09:41:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 76 states have (on average 1.236842105263158) internal successors, (94), 83 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:56,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2021-10-28 09:41:56,376 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 19 [2021-10-28 09:41:56,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:41:56,376 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2021-10-28 09:41:56,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:56,377 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2021-10-28 09:41:56,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:41:56,378 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:41:56,378 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:41:56,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:41:56,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 09:41:56,599 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:41:56,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:41:56,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1456359625, now seen corresponding path program 1 times [2021-10-28 09:41:56,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:41:56,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854727259] [2021-10-28 09:41:56,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:41:56,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:41:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:41:56,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:41:56,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:41:56,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854727259] [2021-10-28 09:41:56,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854727259] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:41:56,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:41:56,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:41:56,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951166291] [2021-10-28 09:41:56,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:41:56,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:41:56,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:41:56,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:41:56,636 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:56,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:41:56,666 INFO L93 Difference]: Finished difference Result 174 states and 199 transitions. [2021-10-28 09:41:56,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:41:56,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-10-28 09:41:56,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:41:56,667 INFO L225 Difference]: With dead ends: 174 [2021-10-28 09:41:56,668 INFO L226 Difference]: Without dead ends: 108 [2021-10-28 09:41:56,668 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:41:56,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-28 09:41:56,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 97. [2021-10-28 09:41:56,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 89 states have (on average 1.202247191011236) internal successors, (107), 96 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:56,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2021-10-28 09:41:56,675 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 20 [2021-10-28 09:41:56,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:41:56,675 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2021-10-28 09:41:56,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:56,676 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2021-10-28 09:41:56,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 09:41:56,677 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:41:56,677 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:41:56,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:41:56,677 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:41:56,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:41:56,678 INFO L85 PathProgramCache]: Analyzing trace with hash 886899864, now seen corresponding path program 1 times [2021-10-28 09:41:56,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:41:56,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164343461] [2021-10-28 09:41:56,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:41:56,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:41:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:41:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:41:56,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:41:56,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164343461] [2021-10-28 09:41:56,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164343461] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:41:56,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:41:56,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:41:56,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691447434] [2021-10-28 09:41:56,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:41:56,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:41:56,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:41:56,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:41:56,716 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:56,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:41:56,754 INFO L93 Difference]: Finished difference Result 201 states and 228 transitions. [2021-10-28 09:41:56,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:41:56,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 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 27 [2021-10-28 09:41:56,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:41:56,755 INFO L225 Difference]: With dead ends: 201 [2021-10-28 09:41:56,755 INFO L226 Difference]: Without dead ends: 122 [2021-10-28 09:41:56,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:41:56,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-28 09:41:56,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 110. [2021-10-28 09:41:56,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 102 states have (on average 1.1862745098039216) internal successors, (121), 109 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:56,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-10-28 09:41:56,762 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 27 [2021-10-28 09:41:56,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:41:56,762 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-10-28 09:41:56,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:41:56,763 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-10-28 09:41:56,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 09:41:56,764 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:41:56,764 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:41:56,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:41:56,764 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:41:56,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:41:56,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2041801735, now seen corresponding path program 1 times [2021-10-28 09:41:56,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:41:56,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394539535] [2021-10-28 09:41:56,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:41:56,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:41:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:41:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:41:57,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:41:57,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394539535] [2021-10-28 09:41:57,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394539535] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:41:57,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785371537] [2021-10-28 09:41:57,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:41:57,009 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:41:57,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:41:57,010 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:41:57,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:41:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:41:57,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-28 09:41:57,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:41:57,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:41:57,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:41:57,248 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-10-28 09:41:57,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 49 [2021-10-28 09:41:57,276 INFO L354 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2021-10-28 09:41:57,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 66 [2021-10-28 09:41:57,411 INFO L354 Elim1Store]: treesize reduction 112, result has 20.0 percent of original size [2021-10-28 09:41:57,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 57 [2021-10-28 09:41:57,841 INFO L354 Elim1Store]: treesize reduction 207, result has 17.9 percent of original size [2021-10-28 09:41:57,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 202 treesize of output 117 [2021-10-28 09:41:57,864 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-10-28 09:41:57,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 169 treesize of output 179 [2021-10-28 09:41:58,327 INFO L354 Elim1Store]: treesize reduction 232, result has 15.3 percent of original size [2021-10-28 09:41:58,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 146 treesize of output 101 [2021-10-28 09:42:01,712 INFO L354 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2021-10-28 09:42:01,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 115 treesize of output 69 [2021-10-28 09:42:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:01,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785371537] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:01,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:42:01,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2021-10-28 09:42:01,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328638010] [2021-10-28 09:42:01,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:42:01,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:01,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:42:01,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:42:01,778 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:05,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:05,851 INFO L93 Difference]: Finished difference Result 180 states and 196 transitions. [2021-10-28 09:42:05,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:42:05,852 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-28 09:42:05,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:05,854 INFO L225 Difference]: With dead ends: 180 [2021-10-28 09:42:05,854 INFO L226 Difference]: Without dead ends: 178 [2021-10-28 09:42:05,856 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-10-28 09:42:05,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-28 09:42:05,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 126. [2021-10-28 09:42:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 125 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:05,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-10-28 09:42:05,866 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 28 [2021-10-28 09:42:05,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:05,868 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-10-28 09:42:05,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:05,868 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-10-28 09:42:05,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 09:42:05,871 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:05,872 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:05,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:06,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:06,093 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:42:06,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:06,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1259768676, now seen corresponding path program 1 times [2021-10-28 09:42:06,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:06,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422237703] [2021-10-28 09:42:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:06,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:42:06,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:06,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422237703] [2021-10-28 09:42:06,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422237703] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:42:06,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:42:06,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:42:06,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323134666] [2021-10-28 09:42:06,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:42:06,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:06,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:42:06,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:42:06,152 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:06,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:06,185 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2021-10-28 09:42:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:42:06,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 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 29 [2021-10-28 09:42:06,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:06,186 INFO L225 Difference]: With dead ends: 129 [2021-10-28 09:42:06,186 INFO L226 Difference]: Without dead ends: 127 [2021-10-28 09:42:06,187 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:42:06,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-28 09:42:06,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-10-28 09:42:06,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 119 states have (on average 1.1680672268907564) internal successors, (139), 126 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:06,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 139 transitions. [2021-10-28 09:42:06,201 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 139 transitions. Word has length 29 [2021-10-28 09:42:06,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:06,202 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 139 transitions. [2021-10-28 09:42:06,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:06,207 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 139 transitions. [2021-10-28 09:42:06,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 09:42:06,208 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:06,209 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:06,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:42:06,209 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:42:06,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:06,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1259766754, now seen corresponding path program 1 times [2021-10-28 09:42:06,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:06,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862406225] [2021-10-28 09:42:06,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:06,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:06,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:06,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:06,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862406225] [2021-10-28 09:42:06,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862406225] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:06,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514673048] [2021-10-28 09:42:06,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:06,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:06,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:06,574 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:06,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:42:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:06,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 09:42:06,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:06,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:42:06,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:42:06,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:42:06,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:42:06,900 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:42:06,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 163 treesize of output 125 [2021-10-28 09:42:06,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:42:06,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:42:06,923 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:42:06,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 59 [2021-10-28 09:42:06,932 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 09:42:06,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 56 [2021-10-28 09:42:07,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:42:07,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:42:07,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:42:07,031 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:42:07,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 93 [2021-10-28 09:42:07,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:42:07,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:42:07,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:42:07,044 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-28 09:42:07,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 88 [2021-10-28 09:42:07,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2021-10-28 09:42:07,702 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-28 09:42:07,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 58 [2021-10-28 09:42:07,709 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-28 09:42:07,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 30 [2021-10-28 09:42:07,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-10-28 09:42:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:07,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514673048] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:07,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:42:07,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2021-10-28 09:42:07,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747743375] [2021-10-28 09:42:07,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:42:07,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:07,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:42:07,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:42:07,786 INFO L87 Difference]: Start difference. First operand 127 states and 139 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:08,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:08,244 INFO L93 Difference]: Finished difference Result 153 states and 167 transitions. [2021-10-28 09:42:08,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:42:08,245 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-28 09:42:08,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:08,246 INFO L225 Difference]: With dead ends: 153 [2021-10-28 09:42:08,246 INFO L226 Difference]: Without dead ends: 151 [2021-10-28 09:42:08,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:42:08,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-28 09:42:08,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 136. [2021-10-28 09:42:08,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 128 states have (on average 1.1640625) internal successors, (149), 135 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:08,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 149 transitions. [2021-10-28 09:42:08,254 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 149 transitions. Word has length 29 [2021-10-28 09:42:08,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:08,255 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 149 transitions. [2021-10-28 09:42:08,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:08,255 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 149 transitions. [2021-10-28 09:42:08,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 09:42:08,256 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:08,256 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:08,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:08,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-28 09:42:08,457 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:42:08,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:08,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1992708989, now seen corresponding path program 1 times [2021-10-28 09:42:08,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:08,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935991861] [2021-10-28 09:42:08,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:08,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:08,657 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:08,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:08,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935991861] [2021-10-28 09:42:08,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935991861] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:08,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779171440] [2021-10-28 09:42:08,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:08,659 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:08,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:08,663 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:08,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:42:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:08,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-28 09:42:08,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:08,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:42:08,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:42:09,013 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:42:09,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 169 treesize of output 131 [2021-10-28 09:42:09,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:42:09,032 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:42:09,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 65 [2021-10-28 09:42:09,048 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-28 09:42:09,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 66 [2021-10-28 09:42:09,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:42:09,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:42:09,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-10-28 09:42:09,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:42:09,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:42:09,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-10-28 09:42:09,469 INFO L354 Elim1Store]: treesize reduction 144, result has 18.6 percent of original size [2021-10-28 09:42:09,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 276 treesize of output 155 [2021-10-28 09:42:09,527 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-10-28 09:42:09,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 151 treesize of output 128 [2021-10-28 09:42:09,545 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-10-28 09:42:09,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 121 [2021-10-28 09:42:09,816 INFO L354 Elim1Store]: treesize reduction 208, result has 16.8 percent of original size [2021-10-28 09:42:09,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 235 treesize of output 142 [2021-10-28 09:42:09,882 INFO L354 Elim1Store]: treesize reduction 384, result has 14.7 percent of original size [2021-10-28 09:42:09,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 201 treesize of output 179 [2021-10-28 09:42:11,792 INFO L354 Elim1Store]: treesize reduction 117, result has 12.0 percent of original size [2021-10-28 09:42:11,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 175 treesize of output 96 [2021-10-28 09:42:11,804 INFO L354 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2021-10-28 09:42:11,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 78 treesize of output 58 [2021-10-28 09:42:11,837 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:11,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779171440] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:11,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:42:11,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2021-10-28 09:42:11,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202869276] [2021-10-28 09:42:11,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:42:11,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:11,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:42:11,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:42:11,843 INFO L87 Difference]: Start difference. First operand 136 states and 149 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:12,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:12,461 INFO L93 Difference]: Finished difference Result 169 states and 184 transitions. [2021-10-28 09:42:12,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:42:12,461 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 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) Word has length 31 [2021-10-28 09:42:12,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:12,462 INFO L225 Difference]: With dead ends: 169 [2021-10-28 09:42:12,462 INFO L226 Difference]: Without dead ends: 167 [2021-10-28 09:42:12,463 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:42:12,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-10-28 09:42:12,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 139. [2021-10-28 09:42:12,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 131 states have (on average 1.1603053435114503) internal successors, (152), 138 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:12,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2021-10-28 09:42:12,474 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 31 [2021-10-28 09:42:12,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:12,475 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2021-10-28 09:42:12,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2021-10-28 09:42:12,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 09:42:12,480 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:12,480 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:12,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:42:12,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-28 09:42:12,693 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:42:12,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:12,694 INFO L85 PathProgramCache]: Analyzing trace with hash 509365297, now seen corresponding path program 1 times [2021-10-28 09:42:12,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:12,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323516898] [2021-10-28 09:42:12,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:12,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-28 09:42:12,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:12,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323516898] [2021-10-28 09:42:12,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323516898] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:42:12,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:42:12,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:42:12,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73450516] [2021-10-28 09:42:12,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:42:12,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:12,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:42:12,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:42:12,742 INFO L87 Difference]: Start difference. First operand 139 states and 152 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:12,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:12,783 INFO L93 Difference]: Finished difference Result 204 states and 226 transitions. [2021-10-28 09:42:12,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:42:12,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 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 36 [2021-10-28 09:42:12,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:12,786 INFO L225 Difference]: With dead ends: 204 [2021-10-28 09:42:12,786 INFO L226 Difference]: Without dead ends: 111 [2021-10-28 09:42:12,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:42:12,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-28 09:42:12,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2021-10-28 09:42:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.120879120879121) internal successors, (102), 95 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:12,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2021-10-28 09:42:12,794 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 36 [2021-10-28 09:42:12,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:12,794 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2021-10-28 09:42:12,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:12,795 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2021-10-28 09:42:12,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 09:42:12,795 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:12,795 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:12,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 09:42:12,796 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:42:12,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:12,796 INFO L85 PathProgramCache]: Analyzing trace with hash 525270376, now seen corresponding path program 1 times [2021-10-28 09:42:12,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:12,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201098137] [2021-10-28 09:42:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:12,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:12,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:42:12,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:12,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201098137] [2021-10-28 09:42:12,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201098137] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:42:12,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:42:12,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:42:12,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647132104] [2021-10-28 09:42:12,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:42:12,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:12,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:42:12,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:42:12,835 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:12,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:12,874 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2021-10-28 09:42:12,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:42:12,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-28 09:42:12,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:12,876 INFO L225 Difference]: With dead ends: 118 [2021-10-28 09:42:12,876 INFO L226 Difference]: Without dead ends: 107 [2021-10-28 09:42:12,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:42:12,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-28 09:42:12,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-10-28 09:42:12,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.11) internal successors, (111), 104 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:12,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2021-10-28 09:42:12,884 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 37 [2021-10-28 09:42:12,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:12,885 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2021-10-28 09:42:12,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:12,885 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2021-10-28 09:42:12,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 09:42:12,886 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:12,886 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:12,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 09:42:12,886 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:42:12,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:12,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1226334954, now seen corresponding path program 1 times [2021-10-28 09:42:12,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:12,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254454377] [2021-10-28 09:42:12,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:12,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:13,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:13,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254454377] [2021-10-28 09:42:13,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254454377] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:13,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129063496] [2021-10-28 09:42:13,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:13,083 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:13,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:13,083 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:13,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:42:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:13,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-28 09:42:13,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:13,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:42:13,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:42:13,517 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:42:13,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 163 treesize of output 125 [2021-10-28 09:42:13,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:42:13,561 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-10-28 09:42:13,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 118 treesize of output 68 [2021-10-28 09:42:13,568 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-28 09:42:13,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 68 [2021-10-28 09:42:13,629 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:42:13,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 114 treesize of output 82 [2021-10-28 09:42:13,635 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-28 09:42:13,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 69 [2021-10-28 09:42:14,304 INFO L354 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2021-10-28 09:42:14,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 52 [2021-10-28 09:42:14,316 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-10-28 09:42:14,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 26 [2021-10-28 09:42:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:14,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129063496] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:14,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:42:14,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2021-10-28 09:42:14,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191217874] [2021-10-28 09:42:14,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:42:14,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:14,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:42:14,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:42:14,339 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand has 15 states, 15 states have (on average 4.4) internal successors, (66), 15 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:16,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:42:16,749 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2021-10-28 09:42:16,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:42:16,750 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.4) internal successors, (66), 15 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-28 09:42:16,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:42:16,751 INFO L225 Difference]: With dead ends: 111 [2021-10-28 09:42:16,751 INFO L226 Difference]: Without dead ends: 80 [2021-10-28 09:42:16,751 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:42:16,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-28 09:42:16,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-28 09:42:16,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.12) internal successors, (84), 79 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2021-10-28 09:42:16,767 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 37 [2021-10-28 09:42:16,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:42:16,768 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2021-10-28 09:42:16,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.4) internal successors, (66), 15 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:42:16,768 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2021-10-28 09:42:16,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 09:42:16,770 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:42:16,770 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:42:16,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-28 09:42:16,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 09:42:16,987 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:42:16,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:42:16,988 INFO L85 PathProgramCache]: Analyzing trace with hash 778254669, now seen corresponding path program 1 times [2021-10-28 09:42:16,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:42:16,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935427966] [2021-10-28 09:42:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:16,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:42:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:17,280 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:17,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:42:17,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935427966] [2021-10-28 09:42:17,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935427966] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:17,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131402675] [2021-10-28 09:42:17,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:42:17,281 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:42:17,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:42:17,283 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:42:17,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 09:42:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:42:17,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-28 09:42:17,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:42:17,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:42:17,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:42:17,791 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-10-28 09:42:17,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 49 [2021-10-28 09:42:17,810 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-28 09:42:17,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 50 [2021-10-28 09:42:17,919 INFO L354 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2021-10-28 09:42:17,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 41 [2021-10-28 09:42:18,343 INFO L354 Elim1Store]: treesize reduction 207, result has 17.9 percent of original size [2021-10-28 09:42:18,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 208 treesize of output 123 [2021-10-28 09:42:18,407 INFO L354 Elim1Store]: treesize reduction 92, result has 31.9 percent of original size [2021-10-28 09:42:18,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 183 treesize of output 206 [2021-10-28 09:42:19,149 INFO L354 Elim1Store]: treesize reduction 244, result has 14.7 percent of original size [2021-10-28 09:42:19,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 147 treesize of output 99 [2021-10-28 09:42:20,217 INFO L354 Elim1Store]: treesize reduction 441, result has 11.8 percent of original size [2021-10-28 09:42:20,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 327 treesize of output 159 [2021-10-28 09:42:20,245 INFO L354 Elim1Store]: treesize reduction 60, result has 50.4 percent of original size [2021-10-28 09:42:20,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 274 treesize of output 302 [2021-10-28 09:42:27,191 INFO L354 Elim1Store]: treesize reduction 408, result has 12.1 percent of original size [2021-10-28 09:42:27,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 258 treesize of output 142 [2021-10-28 09:42:50,770 INFO L354 Elim1Store]: treesize reduction 168, result has 13.0 percent of original size [2021-10-28 09:42:50,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 215 treesize of output 104 [2021-10-28 09:42:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:42:51,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131402675] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:42:51,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:42:51,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-28 09:42:51,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542144291] [2021-10-28 09:42:51,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 09:42:51,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:42:51,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 09:42:51,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=271, Unknown=7, NotChecked=0, Total=342 [2021-10-28 09:42:51,003 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:43:54,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:54,423 INFO L93 Difference]: Finished difference Result 149 states and 159 transitions. [2021-10-28 09:43:54,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 09:43:54,423 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-28 09:43:54,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:43:54,424 INFO L225 Difference]: With dead ends: 149 [2021-10-28 09:43:54,424 INFO L226 Difference]: Without dead ends: 147 [2021-10-28 09:43:54,425 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=141, Invalid=603, Unknown=12, NotChecked=0, Total=756 [2021-10-28 09:43:54,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-28 09:43:54,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 78. [2021-10-28 09:43:54,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 74 states have (on average 1.1081081081081081) internal successors, (82), 77 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:43:54,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-10-28 09:43:54,431 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 38 [2021-10-28 09:43:54,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:43:54,431 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-10-28 09:43:54,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:43:54,431 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-10-28 09:43:54,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-28 09:43:54,432 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:43:54,432 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:43:54,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:54,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:54,643 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:43:54,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:54,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1793269558, now seen corresponding path program 1 times [2021-10-28 09:43:54,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:54,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136995413] [2021-10-28 09:43:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:54,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:54,930 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:54,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:54,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136995413] [2021-10-28 09:43:54,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136995413] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:54,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769158697] [2021-10-28 09:43:54,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:54,931 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:43:54,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:54,931 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:43:54,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 09:43:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:55,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-28 09:43:55,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:55,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:43:55,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:43:55,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:43:55,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:43:55,566 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:43:55,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 169 treesize of output 131 [2021-10-28 09:43:55,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:43:55,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:43:55,593 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:43:55,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 65 [2021-10-28 09:43:55,611 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-28 09:43:55,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 66 [2021-10-28 09:43:55,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:43:55,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:43:55,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-10-28 09:43:55,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:43:55,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:43:55,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-10-28 09:43:55,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 09:43:56,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:43:56,244 INFO L354 Elim1Store]: treesize reduction 144, result has 18.6 percent of original size [2021-10-28 09:43:56,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 340 treesize of output 203 [2021-10-28 09:43:56,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:43:56,297 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-10-28 09:43:56,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 215 treesize of output 192 [2021-10-28 09:43:56,348 INFO L354 Elim1Store]: treesize reduction 96, result has 26.2 percent of original size [2021-10-28 09:43:56,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 176 treesize of output 151 [2021-10-28 09:43:56,366 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-10-28 09:43:56,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 137 treesize of output 139 [2021-10-28 09:43:56,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:43:56,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:43:56,594 INFO L354 Elim1Store]: treesize reduction 208, result has 16.8 percent of original size [2021-10-28 09:43:56,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 263 treesize of output 158 [2021-10-28 09:43:56,607 INFO L354 Elim1Store]: treesize reduction 57, result has 16.2 percent of original size [2021-10-28 09:43:56,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 220 [2021-10-28 09:43:56,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:43:56,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:43:56,654 INFO L354 Elim1Store]: treesize reduction 384, result has 14.7 percent of original size [2021-10-28 09:43:56,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 217 treesize of output 195 [2021-10-28 09:43:58,976 INFO L354 Elim1Store]: treesize reduction 76, result has 14.6 percent of original size [2021-10-28 09:43:58,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 196 treesize of output 118 [2021-10-28 09:43:58,998 INFO L354 Elim1Store]: treesize reduction 88, result has 1.1 percent of original size [2021-10-28 09:43:58,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 112 treesize of output 79 [2021-10-28 09:43:59,155 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 09:43:59,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 26 [2021-10-28 09:43:59,165 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:43:59,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769158697] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:43:59,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:43:59,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-10-28 09:43:59,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605616576] [2021-10-28 09:43:59,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:43:59,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:59,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:43:59,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:43:59,167 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:43:59,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:59,886 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2021-10-28 09:43:59,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:43:59,887 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-28 09:43:59,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:43:59,888 INFO L225 Difference]: With dead ends: 101 [2021-10-28 09:43:59,888 INFO L226 Difference]: Without dead ends: 99 [2021-10-28 09:43:59,889 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-10-28 09:43:59,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-28 09:43:59,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2021-10-28 09:43:59,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 80 states have (on average 1.1125) internal successors, (89), 83 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:43:59,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2021-10-28 09:43:59,897 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 40 [2021-10-28 09:43:59,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:43:59,897 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2021-10-28 09:43:59,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:43:59,898 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2021-10-28 09:43:59,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-28 09:43:59,898 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:43:59,898 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:43:59,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:44:00,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-28 09:44:00,103 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:44:00,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:00,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1428751921, now seen corresponding path program 1 times [2021-10-28 09:44:00,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:00,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605756993] [2021-10-28 09:44:00,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:00,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:44:00,142 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-28 09:44:00,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:44:00,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605756993] [2021-10-28 09:44:00,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605756993] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:44:00,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:44:00,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:44:00,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932603821] [2021-10-28 09:44:00,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:44:00,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:44:00,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:44:00,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:44:00,145 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:00,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:44:00,170 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2021-10-28 09:44:00,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:44:00,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 41 [2021-10-28 09:44:00,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:44:00,171 INFO L225 Difference]: With dead ends: 110 [2021-10-28 09:44:00,171 INFO L226 Difference]: Without dead ends: 98 [2021-10-28 09:44:00,172 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:44:00,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-28 09:44:00,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2021-10-28 09:44:00,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 80 states have (on average 1.1) internal successors, (88), 83 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:00,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2021-10-28 09:44:00,180 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 41 [2021-10-28 09:44:00,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:44:00,181 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2021-10-28 09:44:00,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:00,181 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2021-10-28 09:44:00,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-28 09:44:00,182 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:44:00,182 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:00,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-28 09:44:00,182 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:44:00,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:00,183 INFO L85 PathProgramCache]: Analyzing trace with hash 755507507, now seen corresponding path program 1 times [2021-10-28 09:44:00,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:00,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390937756] [2021-10-28 09:44:00,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:00,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:44:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:44:00,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:44:00,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390937756] [2021-10-28 09:44:00,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390937756] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:44:00,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562689801] [2021-10-28 09:44:00,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:00,579 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:44:00,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:44:00,580 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:44:00,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 09:44:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:44:01,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-28 09:44:01,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:44:01,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:44:01,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:01,539 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:44:01,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 169 treesize of output 131 [2021-10-28 09:44:01,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:01,561 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-10-28 09:44:01,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 62 [2021-10-28 09:44:01,575 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-28 09:44:01,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 66 [2021-10-28 09:44:01,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:01,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:01,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-10-28 09:44:01,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:01,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:01,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-10-28 09:44:02,008 INFO L354 Elim1Store]: treesize reduction 144, result has 18.6 percent of original size [2021-10-28 09:44:02,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 282 treesize of output 161 [2021-10-28 09:44:02,054 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-10-28 09:44:02,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 157 treesize of output 134 [2021-10-28 09:44:02,077 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-10-28 09:44:02,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 125 treesize of output 140 [2021-10-28 09:44:02,325 INFO L354 Elim1Store]: treesize reduction 162, result has 17.8 percent of original size [2021-10-28 09:44:02,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 143 treesize of output 124 [2021-10-28 09:44:02,383 INFO L354 Elim1Store]: treesize reduction 202, result has 17.6 percent of original size [2021-10-28 09:44:02,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 133 treesize of output 135 [2021-10-28 09:44:03,089 INFO L354 Elim1Store]: treesize reduction 380, result has 13.4 percent of original size [2021-10-28 09:44:03,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 502 treesize of output 246 [2021-10-28 09:44:03,193 INFO L354 Elim1Store]: treesize reduction 832, result has 9.1 percent of original size [2021-10-28 09:44:03,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 497 treesize of output 371 [2021-10-28 09:44:03,217 INFO L354 Elim1Store]: treesize reduction 60, result has 50.4 percent of original size [2021-10-28 09:44:03,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 356 treesize of output 384 [2021-10-28 09:44:04,690 INFO L354 Elim1Store]: treesize reduction 372, result has 13.1 percent of original size [2021-10-28 09:44:04,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 407 treesize of output 207 [2021-10-28 09:44:04,804 INFO L354 Elim1Store]: treesize reduction 860, result has 10.8 percent of original size [2021-10-28 09:44:04,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 361 treesize of output 333 [2021-10-28 09:44:21,453 INFO L354 Elim1Store]: treesize reduction 237, result has 9.2 percent of original size [2021-10-28 09:44:21,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 28 case distinctions, treesize of input 322 treesize of output 154 [2021-10-28 09:44:21,482 INFO L354 Elim1Store]: treesize reduction 149, result has 5.1 percent of original size [2021-10-28 09:44:21,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 133 treesize of output 113 [2021-10-28 09:44:21,530 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:44:21,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562689801] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:44:21,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:44:21,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-10-28 09:44:21,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789375801] [2021-10-28 09:44:21,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 09:44:21,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:44:21,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 09:44:21,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=225, Unknown=2, NotChecked=0, Total=272 [2021-10-28 09:44:21,532 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:44:24,557 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2021-10-28 09:44:24,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:44:24,558 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-28 09:44:24,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:44:24,559 INFO L225 Difference]: With dead ends: 131 [2021-10-28 09:44:24,559 INFO L226 Difference]: Without dead ends: 129 [2021-10-28 09:44:24,559 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=108, Invalid=540, Unknown=2, NotChecked=0, Total=650 [2021-10-28 09:44:24,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-28 09:44:24,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 82. [2021-10-28 09:44:24,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 79 states have (on average 1.0886075949367089) internal successors, (86), 81 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:24,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2021-10-28 09:44:24,568 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 41 [2021-10-28 09:44:24,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:44:24,569 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2021-10-28 09:44:24,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:24,569 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2021-10-28 09:44:24,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 09:44:24,570 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:44:24,570 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:24,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:44:24,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:44:24,788 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:44:24,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:24,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1699655007, now seen corresponding path program 1 times [2021-10-28 09:44:24,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:24,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203484247] [2021-10-28 09:44:24,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:24,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:44:25,133 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:44:25,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:44:25,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203484247] [2021-10-28 09:44:25,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203484247] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:44:25,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314111930] [2021-10-28 09:44:25,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:25,134 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:44:25,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:44:25,135 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:44:25,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 09:44:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:44:26,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-28 09:44:26,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:44:26,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:44:26,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:26,122 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:44:26,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 169 treesize of output 131 [2021-10-28 09:44:26,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:26,137 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:44:26,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 65 [2021-10-28 09:44:26,149 INFO L354 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2021-10-28 09:44:26,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 82 [2021-10-28 09:44:26,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:26,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:26,233 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:44:26,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 83 [2021-10-28 09:44:26,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:26,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:26,244 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:44:26,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 61 [2021-10-28 09:44:26,569 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-10-28 09:44:26,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 329 treesize of output 184 [2021-10-28 09:44:26,612 INFO L354 Elim1Store]: treesize reduction 272, result has 15.3 percent of original size [2021-10-28 09:44:26,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 276 treesize of output 164 [2021-10-28 09:44:26,633 INFO L354 Elim1Store]: treesize reduction 108, result has 20.0 percent of original size [2021-10-28 09:44:26,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 155 treesize of output 162 [2021-10-28 09:44:26,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:26,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:26,930 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-10-28 09:44:26,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 171 treesize of output 122 [2021-10-28 09:44:26,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:26,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:26,942 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-10-28 09:44:26,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 121 treesize of output 117 [2021-10-28 09:44:27,388 INFO L354 Elim1Store]: treesize reduction 332, result has 13.3 percent of original size [2021-10-28 09:44:27,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 265 treesize of output 235 [2021-10-28 09:44:27,476 INFO L354 Elim1Store]: treesize reduction 260, result has 15.3 percent of original size [2021-10-28 09:44:27,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 192 treesize of output 149 [2021-10-28 09:44:27,495 INFO L354 Elim1Store]: treesize reduction 60, result has 45.0 percent of original size [2021-10-28 09:44:27,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 216 treesize of output 236 [2021-10-28 09:44:28,030 INFO L354 Elim1Store]: treesize reduction 332, result has 14.4 percent of original size [2021-10-28 09:44:28,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 307 treesize of output 180 [2021-10-28 09:44:28,138 INFO L354 Elim1Store]: treesize reduction 788, result has 11.7 percent of original size [2021-10-28 09:44:28,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 318 treesize of output 290 [2021-10-28 09:44:30,489 INFO L354 Elim1Store]: treesize reduction 294, result has 8.4 percent of original size [2021-10-28 09:44:30,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 14 new quantified variables, introduced 36 case distinctions, treesize of input 296 treesize of output 145 [2021-10-28 09:44:30,501 INFO L354 Elim1Store]: treesize reduction 116, result has 0.9 percent of original size [2021-10-28 09:44:30,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 104 treesize of output 76 [2021-10-28 09:44:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:44:30,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314111930] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:44:30,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:44:30,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-28 09:44:30,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104139388] [2021-10-28 09:44:30,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 09:44:30,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:44:30,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 09:44:30,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:44:30,523 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 19 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:31,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:44:31,191 INFO L93 Difference]: Finished difference Result 129 states and 135 transitions. [2021-10-28 09:44:31,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:44:31,192 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 19 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-28 09:44:31,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:44:31,192 INFO L225 Difference]: With dead ends: 129 [2021-10-28 09:44:31,192 INFO L226 Difference]: Without dead ends: 127 [2021-10-28 09:44:31,193 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:44:31,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-28 09:44:31,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 106. [2021-10-28 09:44:31,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 103 states have (on average 1.0776699029126213) internal successors, (111), 105 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:31,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2021-10-28 09:44:31,203 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 44 [2021-10-28 09:44:31,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:44:31,204 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2021-10-28 09:44:31,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 19 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:31,204 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2021-10-28 09:44:31,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-28 09:44:31,205 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:44:31,205 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2021-10-28 09:44:31,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:44:31,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:44:31,431 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:44:31,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:31,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1057023877, now seen corresponding path program 1 times [2021-10-28 09:44:31,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:31,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982793414] [2021-10-28 09:44:31,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:31,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:44:31,983 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:44:31,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:44:31,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982793414] [2021-10-28 09:44:31,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982793414] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:44:31,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880211756] [2021-10-28 09:44:31,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:31,983 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:44:31,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:44:31,987 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:44:31,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 09:44:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:44:33,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 72 conjunts are in the unsatisfiable core [2021-10-28 09:44:33,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:44:33,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:44:33,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:33,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:33,156 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:44:33,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 169 treesize of output 131 [2021-10-28 09:44:33,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:33,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:44:33,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:33,177 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-10-28 09:44:33,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 128 treesize of output 78 [2021-10-28 09:44:33,192 INFO L354 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2021-10-28 09:44:33,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 82 [2021-10-28 09:44:33,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:33,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:33,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:33,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:33,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:44:33,337 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:44:33,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 96 [2021-10-28 09:44:33,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:33,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:33,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:33,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:33,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:44:33,348 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:44:33,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 64 [2021-10-28 09:44:33,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:44:33,791 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-10-28 09:44:33,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 329 treesize of output 184 [2021-10-28 09:44:33,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:44:33,856 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-10-28 09:44:33,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 152 treesize of output 129 [2021-10-28 09:44:33,889 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-10-28 09:44:33,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 120 treesize of output 127 [2021-10-28 09:44:34,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:34,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:34,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:34,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:44:34,251 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-10-28 09:44:34,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 131 treesize of output 127 [2021-10-28 09:44:34,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:34,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:34,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:34,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:44:34,263 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-28 09:44:34,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 112 treesize of output 91 [2021-10-28 09:44:34,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:44:34,838 INFO L354 Elim1Store]: treesize reduction 332, result has 13.3 percent of original size [2021-10-28 09:44:34,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 264 treesize of output 234 [2021-10-28 09:44:34,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:44:34,915 INFO L354 Elim1Store]: treesize reduction 264, result has 14.0 percent of original size [2021-10-28 09:44:34,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 191 treesize of output 144 [2021-10-28 09:44:34,928 INFO L354 Elim1Store]: treesize reduction 81, result has 4.7 percent of original size [2021-10-28 09:44:34,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 184 treesize of output 168 [2021-10-28 09:44:35,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:35,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:35,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:44:35,227 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-10-28 09:44:35,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 194 treesize of output 154 [2021-10-28 09:44:35,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:35,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:35,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:44:35,244 INFO L354 Elim1Store]: treesize reduction 132, result has 0.8 percent of original size [2021-10-28 09:44:35,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 179 treesize of output 185 [2021-10-28 09:44:35,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 160 [2021-10-28 09:44:37,380 INFO L354 Elim1Store]: treesize reduction 278, result has 7.6 percent of original size [2021-10-28 09:44:37,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 17 new quantified variables, introduced 36 case distinctions, treesize of input 489 treesize of output 183 [2021-10-28 09:44:37,465 INFO L354 Elim1Store]: treesize reduction 278, result has 2.5 percent of original size [2021-10-28 09:44:37,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 117 treesize of output 80 [2021-10-28 09:44:37,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-28 09:44:37,489 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:44:37,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880211756] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:44:37,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:44:37,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 19 [2021-10-28 09:44:37,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880165725] [2021-10-28 09:44:37,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 09:44:37,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:44:37,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 09:44:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:44:37,492 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:38,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:44:38,854 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2021-10-28 09:44:38,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:44:38,855 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 states have internal predecessors, (89), 0 states have call successors, (0), 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 47 [2021-10-28 09:44:38,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:44:38,856 INFO L225 Difference]: With dead ends: 127 [2021-10-28 09:44:38,856 INFO L226 Difference]: Without dead ends: 125 [2021-10-28 09:44:38,857 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2021-10-28 09:44:38,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-28 09:44:38,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 109. [2021-10-28 09:44:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 106 states have (on average 1.0754716981132075) internal successors, (114), 108 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:38,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 114 transitions. [2021-10-28 09:44:38,873 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 114 transitions. Word has length 47 [2021-10-28 09:44:38,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:44:38,874 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 114 transitions. [2021-10-28 09:44:38,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:38,874 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 114 transitions. [2021-10-28 09:44:38,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-28 09:44:38,875 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:44:38,875 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:38,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:44:39,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-28 09:44:39,095 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:44:39,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:39,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1977153044, now seen corresponding path program 1 times [2021-10-28 09:44:39,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:39,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325106276] [2021-10-28 09:44:39,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:39,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:44:39,147 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:44:39,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:44:39,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325106276] [2021-10-28 09:44:39,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325106276] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:44:39,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:44:39,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:44:39,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534258275] [2021-10-28 09:44:39,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:44:39,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:44:39,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:44:39,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:44:39,150 INFO L87 Difference]: Start difference. First operand 109 states and 114 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:39,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:44:39,211 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2021-10-28 09:44:39,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:44:39,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 48 [2021-10-28 09:44:39,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:44:39,213 INFO L225 Difference]: With dead ends: 131 [2021-10-28 09:44:39,213 INFO L226 Difference]: Without dead ends: 120 [2021-10-28 09:44:39,214 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:44:39,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-28 09:44:39,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2021-10-28 09:44:39,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 115 states have (on average 1.0695652173913044) internal successors, (123), 117 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:39,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2021-10-28 09:44:39,232 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 48 [2021-10-28 09:44:39,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:44:39,232 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2021-10-28 09:44:39,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:39,233 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2021-10-28 09:44:39,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-28 09:44:39,233 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:44:39,234 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:39,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-28 09:44:39,234 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:44:39,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:39,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1616749674, now seen corresponding path program 1 times [2021-10-28 09:44:39,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:39,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017899671] [2021-10-28 09:44:39,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:39,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:44:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:44:39,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:44:39,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017899671] [2021-10-28 09:44:39,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017899671] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:44:39,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495743026] [2021-10-28 09:44:39,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:39,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:44:39,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:44:39,759 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:44:39,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 09:44:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:44:41,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-28 09:44:41,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:44:41,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:44:41,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:41,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:41,380 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:44:41,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 169 treesize of output 131 [2021-10-28 09:44:41,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:41,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:44:41,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:41,414 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-10-28 09:44:41,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 128 treesize of output 78 [2021-10-28 09:44:41,429 INFO L354 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2021-10-28 09:44:41,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 82 [2021-10-28 09:44:41,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:41,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:41,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:41,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:44:41,528 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:44:41,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 83 [2021-10-28 09:44:41,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:41,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:41,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:41,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:41,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:44:41,539 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:44:41,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 77 [2021-10-28 09:44:41,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:44:41,908 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-10-28 09:44:41,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 323 treesize of output 178 [2021-10-28 09:44:41,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:44:41,952 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-10-28 09:44:41,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 146 treesize of output 123 [2021-10-28 09:44:41,963 INFO L354 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2021-10-28 09:44:41,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 114 treesize of output 108 [2021-10-28 09:44:42,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:42,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:42,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:44:42,095 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-10-28 09:44:42,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 222 treesize of output 127 [2021-10-28 09:44:42,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:42,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:44:42,102 INFO L354 Elim1Store]: treesize reduction 68, result has 1.4 percent of original size [2021-10-28 09:44:42,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 158 treesize of output 146 [2021-10-28 09:44:42,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 123 [2021-10-28 09:44:43,528 INFO L354 Elim1Store]: treesize reduction 113, result has 9.6 percent of original size [2021-10-28 09:44:43,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 261 treesize of output 123 [2021-10-28 09:44:43,550 INFO L354 Elim1Store]: treesize reduction 114, result has 2.6 percent of original size [2021-10-28 09:44:43,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 50 [2021-10-28 09:44:43,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-10-28 09:44:43,605 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:44:43,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495743026] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:44:43,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:44:43,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 16 [2021-10-28 09:44:43,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362066133] [2021-10-28 09:44:43,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 09:44:43,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:44:43,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 09:44:43,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:44:43,607 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:44,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:44:44,355 INFO L93 Difference]: Finished difference Result 132 states and 136 transitions. [2021-10-28 09:44:44,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:44:44,355 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 0 states have call successors, (0), 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 48 [2021-10-28 09:44:44,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:44:44,356 INFO L225 Difference]: With dead ends: 132 [2021-10-28 09:44:44,356 INFO L226 Difference]: Without dead ends: 130 [2021-10-28 09:44:44,357 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:44:44,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-10-28 09:44:44,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2021-10-28 09:44:44,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.065040650406504) internal successors, (131), 125 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 131 transitions. [2021-10-28 09:44:44,383 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 131 transitions. Word has length 48 [2021-10-28 09:44:44,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:44:44,383 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 131 transitions. [2021-10-28 09:44:44,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:44:44,383 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 131 transitions. [2021-10-28 09:44:44,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-28 09:44:44,384 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:44:44,384 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:44,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:44:44,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-28 09:44:44,611 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:44:44,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:44,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1164547354, now seen corresponding path program 2 times [2021-10-28 09:44:44,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:44:44,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103322027] [2021-10-28 09:44:44,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:44,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:44:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:44:45,167 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:44:45,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:44:45,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103322027] [2021-10-28 09:44:45,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103322027] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:44:45,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544344127] [2021-10-28 09:44:45,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:44:45,168 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:44:45,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:44:45,169 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:44:45,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 09:44:46,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:44:46,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:44:46,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-28 09:44:46,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:44:46,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:44:46,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:46,821 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:44:46,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 169 treesize of output 131 [2021-10-28 09:44:46,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:46,838 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-10-28 09:44:46,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 62 [2021-10-28 09:44:46,849 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-28 09:44:46,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 66 [2021-10-28 09:44:46,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:46,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:46,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-10-28 09:44:46,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:46,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:46,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:46,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-10-28 09:44:47,277 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-10-28 09:44:47,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 329 treesize of output 184 [2021-10-28 09:44:47,326 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-10-28 09:44:47,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 152 treesize of output 129 [2021-10-28 09:44:47,352 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-10-28 09:44:47,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 120 treesize of output 127 [2021-10-28 09:44:47,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:47,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:47,590 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-28 09:44:47,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 131 treesize of output 110 [2021-10-28 09:44:47,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:47,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:44:47,601 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-10-28 09:44:47,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 112 treesize of output 108 [2021-10-28 09:44:48,045 INFO L354 Elim1Store]: treesize reduction 260, result has 15.3 percent of original size [2021-10-28 09:44:48,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 243 treesize of output 200 [2021-10-28 09:44:48,133 INFO L354 Elim1Store]: treesize reduction 552, result has 12.5 percent of original size [2021-10-28 09:44:48,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 404 treesize of output 274 [2021-10-28 09:44:48,173 INFO L354 Elim1Store]: treesize reduction 210, result has 29.5 percent of original size [2021-10-28 09:44:48,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 259 treesize of output 313 [2021-10-28 09:44:48,589 INFO L354 Elim1Store]: treesize reduction 344, result has 14.0 percent of original size [2021-10-28 09:44:48,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 322 treesize of output 183 [2021-10-28 09:44:48,709 INFO L354 Elim1Store]: treesize reduction 560, result has 14.1 percent of original size [2021-10-28 09:44:48,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 312 treesize of output 320 [2021-10-28 09:44:49,694 INFO L354 Elim1Store]: treesize reduction 569, result has 11.4 percent of original size [2021-10-28 09:44:49,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 30 case distinctions, treesize of input 708 treesize of output 289 [2021-10-28 09:44:49,881 INFO L354 Elim1Store]: treesize reduction 1513, result has 7.6 percent of original size [2021-10-28 09:44:49,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 30 case distinctions, treesize of input 699 treesize of output 535 [2021-10-28 09:44:49,915 INFO L354 Elim1Store]: treesize reduction 136, result has 43.6 percent of original size [2021-10-28 09:44:49,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 514 treesize of output 568 [2021-10-28 09:44:52,562 INFO L354 Elim1Store]: treesize reduction 528, result has 11.7 percent of original size [2021-10-28 09:44:52,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 45 case distinctions, treesize of input 596 treesize of output 249 [2021-10-28 09:44:52,704 INFO L354 Elim1Store]: treesize reduction 1488, result has 9.2 percent of original size [2021-10-28 09:44:52,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 538 treesize of output 504 [2021-10-28 09:45:18,890 INFO L354 Elim1Store]: treesize reduction 470, result has 6.9 percent of original size [2021-10-28 09:45:18,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 17 new quantified variables, introduced 55 case distinctions, treesize of input 503 treesize of output 207 [2021-10-28 09:45:18,938 INFO L354 Elim1Store]: treesize reduction 237, result has 3.3 percent of original size [2021-10-28 09:45:18,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 163 treesize of output 135 [2021-10-28 09:45:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:45:18,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544344127] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:45:18,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:45:18,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-28 09:45:18,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088417232] [2021-10-28 09:45:18,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-28 09:45:18,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:45:18,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 09:45:18,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=358, Unknown=2, NotChecked=0, Total=420 [2021-10-28 09:45:18,996 INFO L87 Difference]: Start difference. First operand 126 states and 131 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:45:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:45:28,924 INFO L93 Difference]: Finished difference Result 183 states and 191 transitions. [2021-10-28 09:45:28,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:45:28,925 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-28 09:45:28,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:45:28,926 INFO L225 Difference]: With dead ends: 183 [2021-10-28 09:45:28,926 INFO L226 Difference]: Without dead ends: 181 [2021-10-28 09:45:28,927 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=118, Invalid=691, Unknown=3, NotChecked=0, Total=812 [2021-10-28 09:45:28,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-10-28 09:45:28,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 124. [2021-10-28 09:45:28,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 122 states have (on average 1.0573770491803278) internal successors, (129), 123 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:45:28,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 129 transitions. [2021-10-28 09:45:28,948 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 129 transitions. Word has length 53 [2021-10-28 09:45:28,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:45:28,948 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 129 transitions. [2021-10-28 09:45:28,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:45:28,949 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 129 transitions. [2021-10-28 09:45:28,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-28 09:45:28,949 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:45:28,950 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2021-10-28 09:45:28,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:45:29,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:45:29,151 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:45:29,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:45:29,151 INFO L85 PathProgramCache]: Analyzing trace with hash 53222075, now seen corresponding path program 1 times [2021-10-28 09:45:29,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:45:29,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110794137] [2021-10-28 09:45:29,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:45:29,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:45:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:45:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:45:29,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:45:29,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110794137] [2021-10-28 09:45:29,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110794137] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:45:29,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801832741] [2021-10-28 09:45:29,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:45:29,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:45:29,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:45:29,648 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:45:29,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 09:45:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:45:31,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-28 09:45:31,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:45:31,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:45:31,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:45:31,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:45:31,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:45:31,543 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:45:31,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 169 treesize of output 131 [2021-10-28 09:45:31,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:45:31,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:45:31,560 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:45:31,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 65 [2021-10-28 09:45:31,574 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-28 09:45:31,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 66 [2021-10-28 09:45:31,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:45:31,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:45:31,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-10-28 09:45:31,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 09:45:31,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:45:31,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:45:31,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-10-28 09:45:32,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:45:32,186 INFO L354 Elim1Store]: treesize reduction 144, result has 18.6 percent of original size [2021-10-28 09:45:32,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 346 treesize of output 209 [2021-10-28 09:45:32,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:45:32,248 INFO L354 Elim1Store]: treesize reduction 240, result has 15.8 percent of original size [2021-10-28 09:45:32,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 346 treesize of output 254 [2021-10-28 09:45:32,284 INFO L354 Elim1Store]: treesize reduction 92, result has 31.9 percent of original size [2021-10-28 09:45:32,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 245 treesize of output 268 [2021-10-28 09:45:32,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 264 treesize of output 207 [2021-10-28 09:45:32,316 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-10-28 09:45:32,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 193 treesize of output 181 [2021-10-28 09:45:32,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:45:32,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:45:32,645 INFO L354 Elim1Store]: treesize reduction 220, result has 16.0 percent of original size [2021-10-28 09:45:32,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 216 treesize of output 156 [2021-10-28 09:45:32,671 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-10-28 09:45:32,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 206 treesize of output 205 [2021-10-28 09:45:32,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:45:32,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:45:32,742 INFO L354 Elim1Store]: treesize reduction 300, result has 16.2 percent of original size [2021-10-28 09:45:32,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 202 treesize of output 204 [2021-10-28 09:45:33,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:45:33,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:45:33,870 INFO L354 Elim1Store]: treesize reduction 380, result has 13.4 percent of original size [2021-10-28 09:45:33,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 587 treesize of output 303 [2021-10-28 09:45:33,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:45:33,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:45:34,024 INFO L354 Elim1Store]: treesize reduction 832, result has 9.1 percent of original size [2021-10-28 09:45:34,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 618 treesize of output 492 [2021-10-28 09:45:34,094 INFO L354 Elim1Store]: treesize reduction 318, result has 12.2 percent of original size [2021-10-28 09:45:34,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 486 treesize of output 408 [2021-10-28 09:45:34,122 INFO L354 Elim1Store]: treesize reduction 60, result has 50.4 percent of original size [2021-10-28 09:45:34,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 387 treesize of output 415 [2021-10-28 09:45:34,147 INFO L354 Elim1Store]: treesize reduction 124, result has 19.0 percent of original size [2021-10-28 09:45:34,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 403 treesize of output 394 [2021-10-28 09:45:37,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:45:37,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:45:37,119 INFO L354 Elim1Store]: treesize reduction 372, result has 13.1 percent of original size [2021-10-28 09:45:37,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 460 treesize of output 232 [2021-10-28 09:45:37,148 INFO L354 Elim1Store]: treesize reduction 172, result has 14.4 percent of original size [2021-10-28 09:45:37,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 414 treesize of output 404 [2021-10-28 09:45:37,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:45:37,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:45:37,246 INFO L354 Elim1Store]: treesize reduction 860, result has 10.8 percent of original size [2021-10-28 09:45:37,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 398 treesize of output 370 [2021-10-28 09:46:17,781 INFO L354 Elim1Store]: treesize reduction 176, result has 10.7 percent of original size [2021-10-28 09:46:17,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 364 treesize of output 185 [2021-10-28 09:46:17,820 INFO L354 Elim1Store]: treesize reduction 189, result has 4.1 percent of original size [2021-10-28 09:46:17,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 176 treesize of output 143 [2021-10-28 09:46:18,136 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-10-28 09:46:18,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 37 [2021-10-28 09:46:18,146 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:46:18,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801832741] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:18,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:46:18,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-28 09:46:18,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409244777] [2021-10-28 09:46:18,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 09:46:18,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:46:18,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 09:46:18,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:46:18,147 INFO L87 Difference]: Start difference. First operand 124 states and 129 transitions. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:46:23,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:46:23,418 INFO L93 Difference]: Finished difference Result 157 states and 166 transitions. [2021-10-28 09:46:23,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 09:46:23,418 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-28 09:46:23,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:46:23,419 INFO L225 Difference]: With dead ends: 157 [2021-10-28 09:46:23,419 INFO L226 Difference]: Without dead ends: 155 [2021-10-28 09:46:23,419 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=149, Invalid=843, Unknown=0, NotChecked=0, Total=992 [2021-10-28 09:46:23,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-28 09:46:23,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 129. [2021-10-28 09:46:23,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 127 states have (on average 1.062992125984252) internal successors, (135), 128 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:46:23,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2021-10-28 09:46:23,444 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 55 [2021-10-28 09:46:23,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:46:23,444 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2021-10-28 09:46:23,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:46:23,445 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2021-10-28 09:46:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-28 09:46:23,445 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:46:23,446 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:46:23,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-10-28 09:46:23,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:46:23,659 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:46:23,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:23,660 INFO L85 PathProgramCache]: Analyzing trace with hash 412502626, now seen corresponding path program 2 times [2021-10-28 09:46:23,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:46:23,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48618578] [2021-10-28 09:46:23,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:23,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:46:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:46:23,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:46:23,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48618578] [2021-10-28 09:46:23,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48618578] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:23,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828346406] [2021-10-28 09:46:23,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:46:23,990 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:46:23,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:23,991 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:46:23,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 09:46:26,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:46:26,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:46:26,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-28 09:46:26,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:26,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:46:26,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:26,166 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:46:26,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 169 treesize of output 131 [2021-10-28 09:46:26,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:26,183 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:46:26,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 65 [2021-10-28 09:46:26,196 INFO L354 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2021-10-28 09:46:26,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 82 [2021-10-28 09:46:26,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:26,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:26,275 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:46:26,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 83 [2021-10-28 09:46:26,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:26,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:26,284 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:46:26,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 77 [2021-10-28 09:46:26,605 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-10-28 09:46:26,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 323 treesize of output 178 [2021-10-28 09:46:26,648 INFO L354 Elim1Store]: treesize reduction 240, result has 15.8 percent of original size [2021-10-28 09:46:26,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 239 treesize of output 147 [2021-10-28 09:46:26,659 INFO L354 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size [2021-10-28 09:46:26,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 138 treesize of output 132 [2021-10-28 09:46:26,788 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-10-28 09:46:26,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 195 treesize of output 116 [2021-10-28 09:46:26,794 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-10-28 09:46:26,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 103 treesize of output 103 [2021-10-28 09:46:28,384 INFO L354 Elim1Store]: treesize reduction 182, result has 7.6 percent of original size [2021-10-28 09:46:28,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 14 new quantified variables, introduced 21 case distinctions, treesize of input 307 treesize of output 134 [2021-10-28 09:46:28,415 INFO L354 Elim1Store]: treesize reduction 174, result has 3.9 percent of original size [2021-10-28 09:46:28,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 74 treesize of output 49 [2021-10-28 09:46:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:46:28,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828346406] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:28,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:46:28,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 19 [2021-10-28 09:46:28,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092484639] [2021-10-28 09:46:28,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 09:46:28,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:46:28,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 09:46:28,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:46:28,436 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:46:34,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:46:34,014 INFO L93 Difference]: Finished difference Result 135 states and 140 transitions. [2021-10-28 09:46:34,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:46:34,014 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-10-28 09:46:34,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:46:34,016 INFO L225 Difference]: With dead ends: 135 [2021-10-28 09:46:34,016 INFO L226 Difference]: Without dead ends: 93 [2021-10-28 09:46:34,016 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=100, Invalid=549, Unknown=1, NotChecked=0, Total=650 [2021-10-28 09:46:34,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-28 09:46:34,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-10-28 09:46:34,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 91 states have (on average 1.065934065934066) internal successors, (97), 92 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:46:34,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2021-10-28 09:46:34,026 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 56 [2021-10-28 09:46:34,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:46:34,026 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2021-10-28 09:46:34,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:46:34,026 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2021-10-28 09:46:34,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-28 09:46:34,027 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:46:34,027 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 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] [2021-10-28 09:46:34,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:46:34,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:46:34,236 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:46:34,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:34,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1719756958, now seen corresponding path program 2 times [2021-10-28 09:46:34,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:46:34,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031213801] [2021-10-28 09:46:34,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:34,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:46:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:46:34,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:46:34,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031213801] [2021-10-28 09:46:34,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031213801] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:34,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304671880] [2021-10-28 09:46:34,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:46:34,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:46:34,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:34,822 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:46:34,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 09:46:37,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:46:37,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:46:37,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 84 conjunts are in the unsatisfiable core [2021-10-28 09:46:37,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:37,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:46:37,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:37,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:37,181 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:46:37,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 169 treesize of output 131 [2021-10-28 09:46:37,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:37,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:37,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:37,199 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-10-28 09:46:37,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 62 [2021-10-28 09:46:37,211 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-28 09:46:37,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 66 [2021-10-28 09:46:37,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:37,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:37,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-10-28 09:46:37,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:37,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:37,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-10-28 09:46:37,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:37,751 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-10-28 09:46:37,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 329 treesize of output 184 [2021-10-28 09:46:37,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:37,803 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-10-28 09:46:37,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 152 treesize of output 129 [2021-10-28 09:46:37,824 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-10-28 09:46:37,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 120 treesize of output 127 [2021-10-28 09:46:38,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:38,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:38,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:38,056 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-28 09:46:38,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 131 treesize of output 110 [2021-10-28 09:46:38,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:38,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:38,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:38,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:38,066 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-10-28 09:46:38,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 112 treesize of output 108 [2021-10-28 09:46:38,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:38,573 INFO L354 Elim1Store]: treesize reduction 264, result has 14.0 percent of original size [2021-10-28 09:46:38,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 491 treesize of output 223 [2021-10-28 09:46:38,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:38,650 INFO L354 Elim1Store]: treesize reduction 392, result has 13.1 percent of original size [2021-10-28 09:46:38,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 202 treesize of output 185 [2021-10-28 09:46:38,680 INFO L354 Elim1Store]: treesize reduction 134, result has 17.3 percent of original size [2021-10-28 09:46:38,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 170 treesize of output 180 [2021-10-28 09:46:39,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:39,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:39,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:39,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:39,016 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-10-28 09:46:39,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 189 treesize of output 153 [2021-10-28 09:46:39,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:39,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:39,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:39,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:39,029 INFO L354 Elim1Store]: treesize reduction 104, result has 1.0 percent of original size [2021-10-28 09:46:39,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 170 treesize of output 172 [2021-10-28 09:46:39,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 09:46:39,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:40,112 INFO L354 Elim1Store]: treesize reduction 396, result has 12.6 percent of original size [2021-10-28 09:46:40,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 374 treesize of output 312 [2021-10-28 09:46:40,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:40,269 INFO L354 Elim1Store]: treesize reduction 700, result has 11.3 percent of original size [2021-10-28 09:46:40,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 30 case distinctions, treesize of input 346 treesize of output 335 [2021-10-28 09:46:40,289 INFO L354 Elim1Store]: treesize reduction 141, result has 2.8 percent of original size [2021-10-28 09:46:40,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 314 treesize of output 292 [2021-10-28 09:46:40,319 INFO L354 Elim1Store]: treesize reduction 100, result has 23.1 percent of original size [2021-10-28 09:46:40,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 270 treesize of output 241 [2021-10-28 09:46:40,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:40,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:40,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:40,646 INFO L354 Elim1Store]: treesize reduction 128, result has 0.8 percent of original size [2021-10-28 09:46:40,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 246 treesize of output 195 [2021-10-28 09:46:40,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:40,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:40,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:40,665 INFO L354 Elim1Store]: treesize reduction 268, result has 0.4 percent of original size [2021-10-28 09:46:40,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 267 treesize of output 267 [2021-10-28 09:46:40,678 INFO L354 Elim1Store]: treesize reduction 49, result has 23.4 percent of original size [2021-10-28 09:46:40,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 240 treesize of output 235 [2021-10-28 09:46:42,927 INFO L354 Elim1Store]: treesize reduction 410, result has 9.5 percent of original size [2021-10-28 09:46:42,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 16 new quantified variables, introduced 55 case distinctions, treesize of input 303 treesize of output 196 [2021-10-28 09:46:43,010 INFO L354 Elim1Store]: treesize reduction 398, result has 1.7 percent of original size [2021-10-28 09:46:43,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 14 new quantified variables, introduced 55 case distinctions, treesize of input 158 treesize of output 113 [2021-10-28 09:46:43,019 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:46:43,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2021-10-28 09:46:43,025 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:46:43,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304671880] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:43,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:46:43,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 22 [2021-10-28 09:46:43,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952800460] [2021-10-28 09:46:43,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-28 09:46:43,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:46:43,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-28 09:46:43,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2021-10-28 09:46:43,027 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:46:54,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:46:54,517 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2021-10-28 09:46:54,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:46:54,517 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-10-28 09:46:54,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:46:54,519 INFO L225 Difference]: With dead ends: 161 [2021-10-28 09:46:54,519 INFO L226 Difference]: Without dead ends: 159 [2021-10-28 09:46:54,519 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2021-10-28 09:46:54,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-28 09:46:54,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 102. [2021-10-28 09:46:54,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.07) internal successors, (107), 101 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:46:54,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2021-10-28 09:46:54,537 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 56 [2021-10-28 09:46:54,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:46:54,537 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2021-10-28 09:46:54,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.863636363636363) internal successors, (107), 22 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:46:54,538 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2021-10-28 09:46:54,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-28 09:46:54,538 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:46:54,539 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:46:54,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-10-28 09:46:54,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-28 09:46:54,743 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:46:54,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:54,743 INFO L85 PathProgramCache]: Analyzing trace with hash 906735365, now seen corresponding path program 1 times [2021-10-28 09:46:54,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:46:54,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344970045] [2021-10-28 09:46:54,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:54,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:46:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:54,794 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:46:54,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:46:54,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344970045] [2021-10-28 09:46:54,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344970045] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:46:54,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:46:54,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:46:54,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478381306] [2021-10-28 09:46:54,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:46:54,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:46:54,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:46:54,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:46:54,797 INFO L87 Difference]: Start difference. First operand 102 states and 107 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:46:54,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:46:54,836 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2021-10-28 09:46:54,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:46:54,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-10-28 09:46:54,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:46:54,838 INFO L225 Difference]: With dead ends: 113 [2021-10-28 09:46:54,838 INFO L226 Difference]: Without dead ends: 102 [2021-10-28 09:46:54,839 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:46:54,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-28 09:46:54,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-10-28 09:46:54,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.05) internal successors, (105), 101 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:46:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 105 transitions. [2021-10-28 09:46:54,854 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 105 transitions. Word has length 63 [2021-10-28 09:46:54,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:46:54,855 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 105 transitions. [2021-10-28 09:46:54,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:46:54,855 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 105 transitions. [2021-10-28 09:46:54,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-28 09:46:54,856 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:46:54,856 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:46:54,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-28 09:46:54,856 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:46:54,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:46:54,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1607799943, now seen corresponding path program 1 times [2021-10-28 09:46:54,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:46:54,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586412103] [2021-10-28 09:46:54,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:54,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:46:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:55,487 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:46:55,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:46:55,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586412103] [2021-10-28 09:46:55,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586412103] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:46:55,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342646352] [2021-10-28 09:46:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:46:55,488 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:46:55,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:46:55,491 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:46:55,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 09:46:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:46:58,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-28 09:46:58,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:46:58,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:46:58,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:58,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:58,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:58,292 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:46:58,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 169 treesize of output 131 [2021-10-28 09:46:58,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:58,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:58,309 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:46:58,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 65 [2021-10-28 09:46:58,321 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-28 09:46:58,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 66 [2021-10-28 09:46:58,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:58,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:58,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-10-28 09:46:58,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:58,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:58,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-10-28 09:46:58,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:58,739 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-10-28 09:46:58,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 329 treesize of output 184 [2021-10-28 09:46:58,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:58,782 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-10-28 09:46:58,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 152 treesize of output 129 [2021-10-28 09:46:58,802 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-10-28 09:46:58,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 120 treesize of output 127 [2021-10-28 09:46:58,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 09:46:58,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:58,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:58,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:58,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:58,979 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-28 09:46:58,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 131 treesize of output 110 [2021-10-28 09:46:58,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:58,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:58,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:46:58,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:58,990 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-10-28 09:46:58,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 112 treesize of output 108 [2021-10-28 09:46:59,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:59,628 INFO L354 Elim1Store]: treesize reduction 260, result has 15.3 percent of original size [2021-10-28 09:46:59,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 498 treesize of output 242 [2021-10-28 09:46:59,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:46:59,742 INFO L354 Elim1Store]: treesize reduction 552, result has 12.5 percent of original size [2021-10-28 09:46:59,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 490 treesize of output 360 [2021-10-28 09:46:59,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 354 treesize of output 273 [2021-10-28 09:46:59,774 INFO L354 Elim1Store]: treesize reduction 60, result has 50.4 percent of original size [2021-10-28 09:46:59,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 255 treesize of output 283 [2021-10-28 09:46:59,796 INFO L354 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2021-10-28 09:46:59,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 271 treesize of output 259 [2021-10-28 09:47:00,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:00,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:00,250 INFO L354 Elim1Store]: treesize reduction 332, result has 14.4 percent of original size [2021-10-28 09:47:00,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 400 treesize of output 196 [2021-10-28 09:47:00,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:00,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:00,343 INFO L354 Elim1Store]: treesize reduction 788, result has 11.7 percent of original size [2021-10-28 09:47:00,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 354 treesize of output 326 [2021-10-28 09:47:00,357 INFO L354 Elim1Store]: treesize reduction 77, result has 16.3 percent of original size [2021-10-28 09:47:00,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 305 treesize of output 292 [2021-10-28 09:47:21,277 INFO L354 Elim1Store]: treesize reduction 241, result has 9.1 percent of original size [2021-10-28 09:47:21,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 28 case distinctions, treesize of input 321 treesize of output 157 [2021-10-28 09:47:21,322 INFO L354 Elim1Store]: treesize reduction 234, result has 1.3 percent of original size [2021-10-28 09:47:21,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 142 treesize of output 103 [2021-10-28 09:47:21,463 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-10-28 09:47:21,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 26 [2021-10-28 09:47:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:47:21,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342646352] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:47:21,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:47:21,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 20 [2021-10-28 09:47:21,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166723058] [2021-10-28 09:47:21,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-28 09:47:21,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:47:21,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-28 09:47:21,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-10-28 09:47:21,474 INFO L87 Difference]: Start difference. First operand 102 states and 105 transitions. Second operand has 20 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:47:24,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:47:24,782 INFO L93 Difference]: Finished difference Result 150 states and 153 transitions. [2021-10-28 09:47:24,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:47:24,783 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 0 states have call successors, (0), 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 63 [2021-10-28 09:47:24,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:47:24,784 INFO L225 Difference]: With dead ends: 150 [2021-10-28 09:47:24,784 INFO L226 Difference]: Without dead ends: 148 [2021-10-28 09:47:24,784 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2021-10-28 09:47:24,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-28 09:47:24,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 130. [2021-10-28 09:47:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 128 states have (on average 1.0390625) internal successors, (133), 129 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:47:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 133 transitions. [2021-10-28 09:47:24,809 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 133 transitions. Word has length 63 [2021-10-28 09:47:24,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:47:24,810 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 133 transitions. [2021-10-28 09:47:24,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.05) internal successors, (121), 20 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:47:24,810 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 133 transitions. [2021-10-28 09:47:24,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-28 09:47:24,811 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:47:24,811 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:47:24,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:47:25,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-28 09:47:25,012 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:47:25,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:47:25,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1943137371, now seen corresponding path program 3 times [2021-10-28 09:47:25,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:47:25,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951667619] [2021-10-28 09:47:25,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:47:25,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:47:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:47:25,984 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:47:25,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:47:25,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951667619] [2021-10-28 09:47:25,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951667619] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:47:25,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272781247] [2021-10-28 09:47:25,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:47:25,985 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:47:25,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:47:25,986 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:47:25,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 09:47:33,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-28 09:47:33,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:47:33,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 112 conjunts are in the unsatisfiable core [2021-10-28 09:47:33,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:47:33,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:47:33,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:33,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:33,391 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:47:33,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 169 treesize of output 131 [2021-10-28 09:47:33,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:33,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:33,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:33,415 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-10-28 09:47:33,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 62 [2021-10-28 09:47:33,428 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-28 09:47:33,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 66 [2021-10-28 09:47:33,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:33,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:33,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-10-28 09:47:33,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:33,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:33,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-10-28 09:47:33,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:33,974 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-10-28 09:47:33,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 329 treesize of output 184 [2021-10-28 09:47:33,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:34,036 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-10-28 09:47:34,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 152 treesize of output 129 [2021-10-28 09:47:34,064 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-10-28 09:47:34,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 120 treesize of output 127 [2021-10-28 09:47:34,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:34,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:34,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:34,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:34,382 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-28 09:47:34,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 131 treesize of output 110 [2021-10-28 09:47:34,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:34,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:34,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:34,391 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-10-28 09:47:34,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 112 treesize of output 108 [2021-10-28 09:47:34,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:34,929 INFO L354 Elim1Store]: treesize reduction 332, result has 13.3 percent of original size [2021-10-28 09:47:34,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 270 treesize of output 240 [2021-10-28 09:47:34,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:35,003 INFO L354 Elim1Store]: treesize reduction 264, result has 14.0 percent of original size [2021-10-28 09:47:35,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 197 treesize of output 150 [2021-10-28 09:47:35,037 INFO L354 Elim1Store]: treesize reduction 158, result has 16.8 percent of original size [2021-10-28 09:47:35,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 194 treesize of output 204 [2021-10-28 09:47:35,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:35,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:35,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:35,389 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-10-28 09:47:35,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 213 treesize of output 153 [2021-10-28 09:47:35,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:35,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:35,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:35,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:35,404 INFO L354 Elim1Store]: treesize reduction 124, result has 0.8 percent of original size [2021-10-28 09:47:35,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 194 treesize of output 196 [2021-10-28 09:47:35,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 09:47:36,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:36,436 INFO L354 Elim1Store]: treesize reduction 396, result has 12.6 percent of original size [2021-10-28 09:47:36,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 30 case distinctions, treesize of input 785 treesize of output 318 [2021-10-28 09:47:36,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:36,580 INFO L354 Elim1Store]: treesize reduction 700, result has 11.3 percent of original size [2021-10-28 09:47:36,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 30 case distinctions, treesize of input 352 treesize of output 341 [2021-10-28 09:47:36,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 325 treesize of output 292 [2021-10-28 09:47:36,647 INFO L354 Elim1Store]: treesize reduction 244, result has 14.4 percent of original size [2021-10-28 09:47:36,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 278 treesize of output 291 [2021-10-28 09:47:36,660 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-10-28 09:47:36,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 276 treesize of output 264 [2021-10-28 09:47:37,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:37,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:37,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:37,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:37,142 INFO L354 Elim1Store]: treesize reduction 232, result has 0.4 percent of original size [2021-10-28 09:47:37,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 4 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 283 treesize of output 291 [2021-10-28 09:47:37,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:37,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:37,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:37,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:37,163 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-10-28 09:47:37,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 4 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 33 case distinctions, treesize of input 264 treesize of output 193 [2021-10-28 09:47:37,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:37,178 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-10-28 09:47:37,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 245 treesize of output 244 [2021-10-28 09:47:38,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:38,621 INFO L354 Elim1Store]: treesize reduction 544, result has 11.5 percent of original size [2021-10-28 09:47:38,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 47 case distinctions, treesize of input 455 treesize of output 358 [2021-10-28 09:47:38,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:38,855 INFO L354 Elim1Store]: treesize reduction 1392, result has 9.8 percent of original size [2021-10-28 09:47:38,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 47 case distinctions, treesize of input 511 treesize of output 506 [2021-10-28 09:47:38,935 INFO L354 Elim1Store]: treesize reduction 172, result has 20.7 percent of original size [2021-10-28 09:47:38,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 472 treesize of output 446 [2021-10-28 09:47:38,959 INFO L354 Elim1Store]: treesize reduction 317, result has 1.2 percent of original size [2021-10-28 09:47:38,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 422 treesize of output 374 [2021-10-28 09:47:39,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:39,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:39,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:39,452 INFO L354 Elim1Store]: treesize reduction 200, result has 0.5 percent of original size [2021-10-28 09:47:39,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 3 disjoint index pairs (out of 55 index pairs), introduced 15 new quantified variables, introduced 55 case distinctions, treesize of input 394 treesize of output 240 [2021-10-28 09:47:39,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:39,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:47:39,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:47:39,500 INFO L354 Elim1Store]: treesize reduction 560, result has 0.2 percent of original size [2021-10-28 09:47:39,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 3 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 379 treesize of output 397 [2021-10-28 09:47:39,528 INFO L354 Elim1Store]: treesize reduction 88, result has 23.5 percent of original size [2021-10-28 09:47:39,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 364 treesize of output 366 [2021-10-28 09:47:45,206 INFO L354 Elim1Store]: treesize reduction 494, result has 11.3 percent of original size [2021-10-28 09:47:45,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 1 disjoint index pairs (out of 78 index pairs), introduced 23 new quantified variables, introduced 78 case distinctions, treesize of input 977 treesize of output 281 [2021-10-28 09:47:45,385 INFO L354 Elim1Store]: treesize reduction 534, result has 1.3 percent of original size [2021-10-28 09:47:45,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 1 disjoint index pairs (out of 78 index pairs), introduced 16 new quantified variables, introduced 78 case distinctions, treesize of input 203 treesize of output 150 [2021-10-28 09:47:45,415 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-28 09:47:45,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 25 [2021-10-28 09:47:45,423 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:47:45,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272781247] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:47:45,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:47:45,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 27 [2021-10-28 09:47:45,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468559584] [2021-10-28 09:47:45,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-28 09:47:45,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:47:45,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-28 09:47:45,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2021-10-28 09:47:45,427 INFO L87 Difference]: Start difference. First operand 130 states and 133 transitions. Second operand has 27 states, 27 states have (on average 4.62962962962963) internal successors, (125), 27 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:19,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:19,247 INFO L93 Difference]: Finished difference Result 185 states and 190 transitions. [2021-10-28 09:48:19,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-28 09:48:19,248 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.62962962962963) internal successors, (125), 27 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-28 09:48:19,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:48:19,249 INFO L225 Difference]: With dead ends: 185 [2021-10-28 09:48:19,249 INFO L226 Difference]: Without dead ends: 183 [2021-10-28 09:48:19,249 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=204, Invalid=1356, Unknown=0, NotChecked=0, Total=1560 [2021-10-28 09:48:19,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-28 09:48:19,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 101. [2021-10-28 09:48:19,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.03) internal successors, (103), 100 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:19,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2021-10-28 09:48:19,268 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 65 [2021-10-28 09:48:19,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:48:19,269 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2021-10-28 09:48:19,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.62962962962963) internal successors, (125), 27 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:48:19,269 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2021-10-28 09:48:19,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-28 09:48:19,270 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:19,270 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 09:48:19,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:48:19,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:48:19,471 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:48:19,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:19,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1258127955, now seen corresponding path program 2 times [2021-10-28 09:48:19,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:19,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693446940] [2021-10-28 09:48:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:19,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:48:20,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:48:20,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693446940] [2021-10-28 09:48:20,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693446940] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:48:20,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439870841] [2021-10-28 09:48:20,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:48:20,247 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:48:20,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:20,248 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:48:20,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-28 09:48:23,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:48:23,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:48:23,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-28 09:48:23,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:48:28,026 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:48:28,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 101 [2021-10-28 09:48:28,041 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 09:48:28,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 91 [2021-10-28 09:48:28,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-10-28 09:48:28,109 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-28 09:48:28,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439870841] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:48:28,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:48:28,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 19 [2021-10-28 09:48:28,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357222937] [2021-10-28 09:48:28,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 09:48:28,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:48:28,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 09:48:28,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=299, Unknown=2, NotChecked=0, Total=342 [2021-10-28 09:48:28,111 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand has 19 states, 19 states have (on average 6.578947368421052) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:03,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:49:03,565 INFO L93 Difference]: Finished difference Result 149 states and 152 transitions. [2021-10-28 09:49:03,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 09:49:03,566 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.578947368421052) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-10-28 09:49:03,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:49:03,567 INFO L225 Difference]: With dead ends: 149 [2021-10-28 09:49:03,567 INFO L226 Difference]: Without dead ends: 147 [2021-10-28 09:49:03,568 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=138, Invalid=981, Unknown=3, NotChecked=0, Total=1122 [2021-10-28 09:49:03,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-28 09:49:03,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 123. [2021-10-28 09:49:03,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 122 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:03,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 126 transitions. [2021-10-28 09:49:03,593 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 126 transitions. Word has length 71 [2021-10-28 09:49:03,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:49:03,593 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 126 transitions. [2021-10-28 09:49:03,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.578947368421052) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:03,594 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 126 transitions. [2021-10-28 09:49:03,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-28 09:49:03,595 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:03,595 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:03,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:49:03,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:49:03,815 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:49:03,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:03,815 INFO L85 PathProgramCache]: Analyzing trace with hash 13255584, now seen corresponding path program 3 times [2021-10-28 09:49:03,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:49:03,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227653239] [2021-10-28 09:49:03,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:03,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:49:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:04,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:49:04,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227653239] [2021-10-28 09:49:04,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227653239] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:49:04,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526927941] [2021-10-28 09:49:04,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:49:04,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:49:04,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:49:04,505 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:49:04,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-28 09:49:09,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-28 09:49:09,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:49:09,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 96 conjunts are in the unsatisfiable core [2021-10-28 09:49:09,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:49:09,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:49:09,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,200 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:49:09,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 173 treesize of output 135 [2021-10-28 09:49:09,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:09,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,218 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-10-28 09:49:09,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 136 treesize of output 86 [2021-10-28 09:49:09,227 INFO L354 Elim1Store]: treesize reduction 35, result has 12.5 percent of original size [2021-10-28 09:49:09,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 82 [2021-10-28 09:49:09,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:09,326 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:49:09,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 83 [2021-10-28 09:49:09,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:09,334 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:49:09,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 77 [2021-10-28 09:49:09,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:09,683 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-10-28 09:49:09,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 329 treesize of output 184 [2021-10-28 09:49:09,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:09,721 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-10-28 09:49:09,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 152 treesize of output 129 [2021-10-28 09:49:09,739 INFO L354 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2021-10-28 09:49:09,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 120 treesize of output 123 [2021-10-28 09:49:09,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:09,973 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-10-28 09:49:09,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 139 treesize of output 114 [2021-10-28 09:49:09,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:09,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:09,984 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-10-28 09:49:09,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 120 treesize of output 116 [2021-10-28 09:49:10,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 09:49:10,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:10,571 INFO L354 Elim1Store]: treesize reduction 332, result has 13.3 percent of original size [2021-10-28 09:49:10,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 326 treesize of output 296 [2021-10-28 09:49:10,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:10,657 INFO L354 Elim1Store]: treesize reduction 264, result has 14.0 percent of original size [2021-10-28 09:49:10,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 253 treesize of output 202 [2021-10-28 09:49:10,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 243 treesize of output 210 [2021-10-28 09:49:10,716 INFO L354 Elim1Store]: treesize reduction 130, result has 19.8 percent of original size [2021-10-28 09:49:10,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 196 treesize of output 210 [2021-10-28 09:49:10,727 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-10-28 09:49:10,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 198 treesize of output 186 [2021-10-28 09:49:11,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:11,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:11,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:11,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:11,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:11,072 INFO L354 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2021-10-28 09:49:11,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 221 treesize of output 223 [2021-10-28 09:49:11,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:11,085 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-10-28 09:49:11,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 201 [2021-10-28 09:49:11,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:11,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:11,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:11,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:11,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:11,099 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-10-28 09:49:11,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 20 case distinctions, treesize of input 198 treesize of output 154 [2021-10-28 09:49:11,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:12,058 INFO L354 Elim1Store]: treesize reduction 396, result has 12.6 percent of original size [2021-10-28 09:49:12,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 389 treesize of output 319 [2021-10-28 09:49:12,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:12,230 INFO L354 Elim1Store]: treesize reduction 700, result has 11.3 percent of original size [2021-10-28 09:49:12,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 30 case distinctions, treesize of input 361 treesize of output 350 [2021-10-28 09:49:12,293 INFO L354 Elim1Store]: treesize reduction 172, result has 20.7 percent of original size [2021-10-28 09:49:12,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 322 treesize of output 296 [2021-10-28 09:49:12,309 INFO L354 Elim1Store]: treesize reduction 137, result has 5.5 percent of original size [2021-10-28 09:49:12,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 272 treesize of output 254 [2021-10-28 09:49:12,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:12,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:12,654 INFO L354 Elim1Store]: treesize reduction 128, result has 0.8 percent of original size [2021-10-28 09:49:12,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 265 treesize of output 202 [2021-10-28 09:49:12,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:12,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:12,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:12,691 INFO L354 Elim1Store]: treesize reduction 212, result has 0.5 percent of original size [2021-10-28 09:49:12,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 246 treesize of output 246 [2021-10-28 09:49:12,712 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-10-28 09:49:12,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 217 [2021-10-28 09:49:18,966 INFO L354 Elim1Store]: treesize reduction 297, result has 9.7 percent of original size [2021-10-28 09:49:18,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 13 new quantified variables, introduced 45 case distinctions, treesize of input 247 treesize of output 171 [2021-10-28 09:49:19,020 INFO L354 Elim1Store]: treesize reduction 290, result has 1.0 percent of original size [2021-10-28 09:49:19,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 45 case distinctions, treesize of input 147 treesize of output 100 [2021-10-28 09:49:19,195 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-28 09:49:19,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 37 [2021-10-28 09:49:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:19,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526927941] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:49:19,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:49:19,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2021-10-28 09:49:19,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269973111] [2021-10-28 09:49:19,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-28 09:49:19,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:49:19,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-28 09:49:19,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=521, Unknown=1, NotChecked=0, Total=600 [2021-10-28 09:49:19,207 INFO L87 Difference]: Start difference. First operand 123 states and 126 transitions. Second operand has 25 states, 25 states have (on average 5.56) internal successors, (139), 25 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:41,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:49:41,763 INFO L93 Difference]: Finished difference Result 186 states and 190 transitions. [2021-10-28 09:49:41,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 09:49:41,764 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.56) internal successors, (139), 25 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-10-28 09:49:41,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:49:41,765 INFO L225 Difference]: With dead ends: 186 [2021-10-28 09:49:41,766 INFO L226 Difference]: Without dead ends: 184 [2021-10-28 09:49:41,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=149, Invalid=1108, Unknown=3, NotChecked=0, Total=1260 [2021-10-28 09:49:41,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-28 09:49:41,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 80. [2021-10-28 09:49:41,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:41,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2021-10-28 09:49:41,788 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 72 [2021-10-28 09:49:41,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:49:41,788 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2021-10-28 09:49:41,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.56) internal successors, (139), 25 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:49:41,789 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2021-10-28 09:49:41,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-28 09:49:41,789 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:41,789 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 09:49:41,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:49:41,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-28 09:49:41,990 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:49:41,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:41,990 INFO L85 PathProgramCache]: Analyzing trace with hash -672046049, now seen corresponding path program 4 times [2021-10-28 09:49:41,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:49:41,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528288286] [2021-10-28 09:49:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:41,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:49:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:42,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:49:42,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528288286] [2021-10-28 09:49:42,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528288286] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:49:42,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665284098] [2021-10-28 09:49:42,695 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:49:42,696 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:49:42,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:49:42,696 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:49:42,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 09:49:46,364 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:49:46,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:49:46,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-28 09:49:46,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:49:46,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:49:46,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:46,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:46,435 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:49:46,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 169 treesize of output 131 [2021-10-28 09:49:46,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:46,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:46,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:46,454 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-10-28 09:49:46,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 128 treesize of output 78 [2021-10-28 09:49:46,472 INFO L354 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2021-10-28 09:49:46,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 82 [2021-10-28 09:49:46,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:46,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:46,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:46,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:46,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:46,560 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:49:46,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 83 [2021-10-28 09:49:46,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:46,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:46,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:46,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:46,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:46,568 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:49:46,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 61 [2021-10-28 09:49:46,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:46,928 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-10-28 09:49:46,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 329 treesize of output 184 [2021-10-28 09:49:46,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:46,971 INFO L354 Elim1Store]: treesize reduction 240, result has 15.8 percent of original size [2021-10-28 09:49:46,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 253 treesize of output 161 [2021-10-28 09:49:46,992 INFO L354 Elim1Store]: treesize reduction 108, result has 20.0 percent of original size [2021-10-28 09:49:46,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 152 treesize of output 159 [2021-10-28 09:49:47,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:47,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:47,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:47,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:47,250 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-10-28 09:49:47,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 172 treesize of output 122 [2021-10-28 09:49:47,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:47,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:47,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:47,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:47,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:47,264 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-10-28 09:49:47,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 121 treesize of output 117 [2021-10-28 09:49:47,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:47,751 INFO L354 Elim1Store]: treesize reduction 264, result has 14.0 percent of original size [2021-10-28 09:49:47,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 485 treesize of output 217 [2021-10-28 09:49:47,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:47,832 INFO L354 Elim1Store]: treesize reduction 552, result has 12.5 percent of original size [2021-10-28 09:49:47,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 369 treesize of output 239 [2021-10-28 09:49:47,844 INFO L354 Elim1Store]: treesize reduction 105, result has 13.2 percent of original size [2021-10-28 09:49:47,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 224 treesize of output 208 [2021-10-28 09:49:48,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:48,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:48,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:48,097 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-10-28 09:49:48,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 304 treesize of output 154 [2021-10-28 09:49:48,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:48,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:49:48,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:49:48,108 INFO L354 Elim1Store]: treesize reduction 192, result has 0.5 percent of original size [2021-10-28 09:49:48,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 253 treesize of output 223 [2021-10-28 09:49:52,281 INFO L354 Elim1Store]: treesize reduction 411, result has 5.9 percent of original size [2021-10-28 09:49:52,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 17 new quantified variables, introduced 45 case distinctions, treesize of input 334 treesize of output 164 [2021-10-28 09:49:52,355 INFO L354 Elim1Store]: treesize reduction 375, result has 2.6 percent of original size [2021-10-28 09:49:52,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 45 case distinctions, treesize of input 111 treesize of output 76 [2021-10-28 09:49:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 12 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:49:52,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665284098] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:49:52,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:49:52,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 26 [2021-10-28 09:49:52,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632570189] [2021-10-28 09:49:52,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-28 09:49:52,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:49:52,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-28 09:49:52,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2021-10-28 09:49:52,388 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:50:14,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:50:14,095 INFO L93 Difference]: Finished difference Result 145 states and 147 transitions. [2021-10-28 09:50:14,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:50:14,095 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-10-28 09:50:14,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:50:14,096 INFO L225 Difference]: With dead ends: 145 [2021-10-28 09:50:14,096 INFO L226 Difference]: Without dead ends: 89 [2021-10-28 09:50:14,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2021-10-28 09:50:14,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-28 09:50:14,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-10-28 09:50:14,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:50:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2021-10-28 09:50:14,122 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 79 [2021-10-28 09:50:14,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:50:14,123 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2021-10-28 09:50:14,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:50:14,123 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2021-10-28 09:50:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-28 09:50:14,123 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:50:14,124 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2021-10-28 09:50:14,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:50:14,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-10-28 09:50:14,324 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:50:14,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:50:14,325 INFO L85 PathProgramCache]: Analyzing trace with hash -12631752, now seen corresponding path program 5 times [2021-10-28 09:50:14,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:50:14,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216703046] [2021-10-28 09:50:14,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:50:14,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:50:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:50:15,686 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:50:15,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:50:15,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216703046] [2021-10-28 09:50:15,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216703046] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:50:15,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357403316] [2021-10-28 09:50:15,686 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:50:15,687 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:50:15,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:50:15,687 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:50:15,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 09:50:20,721 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-28 09:50:20,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:50:20,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 103 conjunts are in the unsatisfiable core [2021-10-28 09:50:20,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:50:20,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:50:20,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:20,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:50:20,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:20,809 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:50:20,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 169 treesize of output 131 [2021-10-28 09:50:20,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:20,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:20,830 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:50:20,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 65 [2021-10-28 09:50:20,844 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-28 09:50:20,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 66 [2021-10-28 09:50:20,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:20,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:20,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-10-28 09:50:20,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:20,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:20,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-10-28 09:50:21,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:50:21,322 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-10-28 09:50:21,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 329 treesize of output 184 [2021-10-28 09:50:21,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:50:21,370 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-10-28 09:50:21,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 152 treesize of output 129 [2021-10-28 09:50:21,393 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-10-28 09:50:21,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 120 treesize of output 127 [2021-10-28 09:50:21,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:21,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:21,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:21,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:50:21,612 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-28 09:50:21,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 131 treesize of output 110 [2021-10-28 09:50:21,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:21,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:21,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:21,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:50:21,642 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-10-28 09:50:21,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 112 treesize of output 108 [2021-10-28 09:50:22,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:50:22,237 INFO L354 Elim1Store]: treesize reduction 264, result has 14.0 percent of original size [2021-10-28 09:50:22,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 491 treesize of output 223 [2021-10-28 09:50:22,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:50:22,334 INFO L354 Elim1Store]: treesize reduction 496, result has 12.5 percent of original size [2021-10-28 09:50:22,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 326 treesize of output 220 [2021-10-28 09:50:22,374 INFO L354 Elim1Store]: treesize reduction 190, result has 15.9 percent of original size [2021-10-28 09:50:22,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 205 treesize of output 215 [2021-10-28 09:50:22,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:22,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:22,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:22,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:22,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:50:22,821 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-10-28 09:50:22,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 233 treesize of output 165 [2021-10-28 09:50:22,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:22,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:22,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:22,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:22,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:50:22,846 INFO L354 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2021-10-28 09:50:22,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 179 treesize of output 181 [2021-10-28 09:50:23,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:50:23,739 INFO L354 Elim1Store]: treesize reduction 396, result has 12.6 percent of original size [2021-10-28 09:50:23,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 322 treesize of output 260 [2021-10-28 09:50:23,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:50:23,872 INFO L354 Elim1Store]: treesize reduction 700, result has 11.3 percent of original size [2021-10-28 09:50:23,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 30 case distinctions, treesize of input 278 treesize of output 267 [2021-10-28 09:50:23,891 INFO L354 Elim1Store]: treesize reduction 141, result has 2.8 percent of original size [2021-10-28 09:50:23,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 246 treesize of output 224 [2021-10-28 09:50:24,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:24,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:50:24,263 INFO L354 Elim1Store]: treesize reduction 128, result has 0.8 percent of original size [2021-10-28 09:50:24,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 235 treesize of output 188 [2021-10-28 09:50:24,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:24,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:50:24,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:50:24,292 INFO L354 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2021-10-28 09:50:24,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 220 treesize of output 232 [2021-10-28 09:50:24,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 205 treesize of output 201 [2021-10-28 09:50:49,335 INFO L354 Elim1Store]: treesize reduction 539, result has 8.5 percent of original size [2021-10-28 09:50:49,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 1 disjoint index pairs (out of 66 index pairs), introduced 19 new quantified variables, introduced 66 case distinctions, treesize of input 345 treesize of output 215 [2021-10-28 09:50:49,482 INFO L354 Elim1Store]: treesize reduction 519, result has 1.9 percent of original size [2021-10-28 09:50:49,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 1 disjoint index pairs (out of 66 index pairs), introduced 16 new quantified variables, introduced 66 case distinctions, treesize of input 153 treesize of output 110 [2021-10-28 09:50:49,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-10-28 09:50:49,545 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:50:49,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357403316] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:50:49,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:50:49,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 29 [2021-10-28 09:50:49,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530179021] [2021-10-28 09:50:49,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-28 09:50:49,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:50:49,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-28 09:50:49,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=730, Unknown=6, NotChecked=0, Total=812 [2021-10-28 09:50:49,547 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 29 states, 29 states have (on average 5.724137931034483) internal successors, (166), 29 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:49,701 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2021-10-28 09:51:49,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-28 09:51:49,702 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.724137931034483) internal successors, (166), 29 states have internal predecessors, (166), 0 states have call successors, (0), 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 88 [2021-10-28 09:51:49,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:49,704 INFO L225 Difference]: With dead ends: 162 [2021-10-28 09:51:49,704 INFO L226 Difference]: Without dead ends: 160 [2021-10-28 09:51:49,705 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=186, Invalid=1700, Unknown=6, NotChecked=0, Total=1892 [2021-10-28 09:51:49,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-28 09:51:49,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 126. [2021-10-28 09:51:49,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.024) internal successors, (128), 125 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2021-10-28 09:51:49,753 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 88 [2021-10-28 09:51:49,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:49,753 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions. [2021-10-28 09:51:49,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.724137931034483) internal successors, (166), 29 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:49,754 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions. [2021-10-28 09:51:49,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-10-28 09:51:49,754 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:49,755 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-10-28 09:51:49,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-28 09:51:49,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:51:49,971 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:51:49,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:49,972 INFO L85 PathProgramCache]: Analyzing trace with hash 650931716, now seen corresponding path program 6 times [2021-10-28 09:51:49,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:49,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882359853] [2021-10-28 09:51:49,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:49,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:50,779 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 16 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:51:50,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:50,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882359853] [2021-10-28 09:51:50,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882359853] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:51:50,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669447709] [2021-10-28 09:51:50,779 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:51:50,779 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:51:50,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:51:50,780 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:51:50,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-28 09:51:56,041 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-28 09:51:56,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:51:56,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 93 conjunts are in the unsatisfiable core [2021-10-28 09:51:56,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:51:56,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:51:56,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:51:56,143 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:51:56,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 169 treesize of output 131 [2021-10-28 09:51:56,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:51:56,164 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-10-28 09:51:56,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 128 treesize of output 78 [2021-10-28 09:51:56,178 INFO L354 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2021-10-28 09:51:56,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 82 [2021-10-28 09:51:56,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:51:56,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:51:56,333 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:51:56,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 96 [2021-10-28 09:51:56,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:51:56,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:51:56,341 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:51:56,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 64 [2021-10-28 09:51:56,649 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-10-28 09:51:56,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 329 treesize of output 184 [2021-10-28 09:51:56,697 INFO L354 Elim1Store]: treesize reduction 240, result has 15.8 percent of original size [2021-10-28 09:51:56,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 253 treesize of output 161 [2021-10-28 09:51:56,721 INFO L354 Elim1Store]: treesize reduction 108, result has 20.0 percent of original size [2021-10-28 09:51:56,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 152 treesize of output 159 [2021-10-28 09:51:56,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:51:56,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:51:56,996 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-10-28 09:51:56,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 172 treesize of output 122 [2021-10-28 09:51:57,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:51:57,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:51:57,006 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-10-28 09:51:57,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 121 treesize of output 117 [2021-10-28 09:51:57,577 INFO L354 Elim1Store]: treesize reduction 264, result has 14.0 percent of original size [2021-10-28 09:51:57,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 491 treesize of output 223 [2021-10-28 09:51:57,694 INFO L354 Elim1Store]: treesize reduction 460, result has 12.7 percent of original size [2021-10-28 09:51:57,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 242 treesize of output 209 [2021-10-28 09:51:57,729 INFO L354 Elim1Store]: treesize reduction 158, result has 16.8 percent of original size [2021-10-28 09:51:57,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 194 treesize of output 204 [2021-10-28 09:51:58,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:51:58,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:51:58,095 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-10-28 09:51:58,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 213 treesize of output 153 [2021-10-28 09:51:58,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:51:58,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:51:58,108 INFO L354 Elim1Store]: treesize reduction 104, result has 1.0 percent of original size [2021-10-28 09:51:58,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 170 treesize of output 172 [2021-10-28 09:51:58,925 INFO L354 Elim1Store]: treesize reduction 396, result has 12.6 percent of original size [2021-10-28 09:51:58,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 30 case distinctions, treesize of input 679 treesize of output 260 [2021-10-28 09:51:59,094 INFO L354 Elim1Store]: treesize reduction 868, result has 10.8 percent of original size [2021-10-28 09:51:59,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 30 case distinctions, treesize of input 358 treesize of output 315 [2021-10-28 09:51:59,112 INFO L354 Elim1Store]: treesize reduction 173, result has 2.3 percent of original size [2021-10-28 09:51:59,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 294 treesize of output 264 [2021-10-28 09:51:59,469 INFO L354 Elim1Store]: treesize reduction 128, result has 0.8 percent of original size [2021-10-28 09:51:59,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 421 treesize of output 188 [2021-10-28 09:51:59,487 INFO L354 Elim1Store]: treesize reduction 408, result has 0.2 percent of original size [2021-10-28 09:51:59,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 358 treesize of output 322 [2021-10-28 09:52:04,633 INFO L354 Elim1Store]: treesize reduction 628, result has 6.7 percent of original size [2021-10-28 09:52:04,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 1 disjoint index pairs (out of 78 index pairs), introduced 23 new quantified variables, introduced 78 case distinctions, treesize of input 549 treesize of output 223 [2021-10-28 09:52:04,789 INFO L354 Elim1Store]: treesize reduction 588, result has 2.2 percent of original size [2021-10-28 09:52:04,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 1 disjoint index pairs (out of 78 index pairs), introduced 17 new quantified variables, introduced 78 case distinctions, treesize of input 130 treesize of output 98 [2021-10-28 09:52:04,812 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 16 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:04,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669447709] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:52:04,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:52:04,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 28 [2021-10-28 09:52:04,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225902589] [2021-10-28 09:52:04,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-28 09:52:04,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:04,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-28 09:52:04,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-10-28 09:52:04,814 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand has 28 states, 28 states have (on average 6.571428571428571) internal successors, (184), 28 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:43,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:43,172 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2021-10-28 09:52:43,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:52:43,172 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.571428571428571) internal successors, (184), 28 states have internal predecessors, (184), 0 states have call successors, (0), 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 96 [2021-10-28 09:52:43,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:43,173 INFO L225 Difference]: With dead ends: 162 [2021-10-28 09:52:43,173 INFO L226 Difference]: Without dead ends: 98 [2021-10-28 09:52:43,173 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 84 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2021-10-28 09:52:43,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-28 09:52:43,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-10-28 09:52:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:43,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2021-10-28 09:52:43,194 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 96 [2021-10-28 09:52:43,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:43,194 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2021-10-28 09:52:43,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.571428571428571) internal successors, (184), 28 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:43,195 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2021-10-28 09:52:43,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-28 09:52:43,195 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:43,196 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:43,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-10-28 09:52:43,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:52:43,398 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:52:43,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:43,398 INFO L85 PathProgramCache]: Analyzing trace with hash 6688831, now seen corresponding path program 7 times [2021-10-28 09:52:43,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:43,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073185704] [2021-10-28 09:52:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:43,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:44,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:44,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073185704] [2021-10-28 09:52:44,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073185704] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:52:44,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546273856] [2021-10-28 09:52:44,596 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:52:44,597 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:52:44,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:52:44,599 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:52:44,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-28 09:52:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:49,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 121 conjunts are in the unsatisfiable core [2021-10-28 09:52:49,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:49,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:52:49,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:49,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:49,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:49,764 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:52:49,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 169 treesize of output 131 [2021-10-28 09:52:49,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:49,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:49,783 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:52:49,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 65 [2021-10-28 09:52:49,795 INFO L354 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2021-10-28 09:52:49,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 82 [2021-10-28 09:52:49,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:49,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:49,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:49,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:49,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:49,893 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:52:49,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 83 [2021-10-28 09:52:49,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:49,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:49,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:49,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:49,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:49,902 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:52:49,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 77 [2021-10-28 09:52:50,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:50,280 INFO L354 Elim1Store]: treesize reduction 148, result has 16.4 percent of original size [2021-10-28 09:52:50,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 329 treesize of output 184 [2021-10-28 09:52:50,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:50,329 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-10-28 09:52:50,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 152 treesize of output 129 [2021-10-28 09:52:50,354 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-10-28 09:52:50,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 120 treesize of output 127 [2021-10-28 09:52:50,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:50,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:50,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:50,718 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-28 09:52:50,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 131 treesize of output 110 [2021-10-28 09:52:50,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:50,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:50,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:50,730 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-10-28 09:52:50,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 112 treesize of output 108 [2021-10-28 09:52:51,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:51,300 INFO L354 Elim1Store]: treesize reduction 332, result has 13.3 percent of original size [2021-10-28 09:52:51,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 270 treesize of output 240 [2021-10-28 09:52:51,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:51,382 INFO L354 Elim1Store]: treesize reduction 264, result has 14.0 percent of original size [2021-10-28 09:52:51,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 197 treesize of output 150 [2021-10-28 09:52:51,421 INFO L354 Elim1Store]: treesize reduction 158, result has 16.8 percent of original size [2021-10-28 09:52:51,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 190 treesize of output 200 [2021-10-28 09:52:51,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:51,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:51,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:51,853 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-10-28 09:52:51,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 209 treesize of output 153 [2021-10-28 09:52:51,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:51,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:51,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:51,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:51,869 INFO L354 Elim1Store]: treesize reduction 104, result has 1.0 percent of original size [2021-10-28 09:52:51,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 170 treesize of output 172 [2021-10-28 09:52:52,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:52,724 INFO L354 Elim1Store]: treesize reduction 396, result has 12.6 percent of original size [2021-10-28 09:52:52,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 348 treesize of output 266 [2021-10-28 09:52:52,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:52,857 INFO L354 Elim1Store]: treesize reduction 852, result has 11.0 percent of original size [2021-10-28 09:52:52,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 30 case distinctions, treesize of input 324 treesize of output 313 [2021-10-28 09:52:52,924 INFO L354 Elim1Store]: treesize reduction 300, result has 14.0 percent of original size [2021-10-28 09:52:52,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 292 treesize of output 305 [2021-10-28 09:52:53,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 09:52:53,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:53,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:53,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:53,495 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-10-28 09:52:53,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 4 disjoint index pairs (out of 36 index pairs), introduced 12 new quantified variables, introduced 33 case distinctions, treesize of input 299 treesize of output 192 [2021-10-28 09:52:53,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:53,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:53,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:53,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:53,533 INFO L354 Elim1Store]: treesize reduction 232, result has 0.4 percent of original size [2021-10-28 09:52:53,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 4 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 235 treesize of output 243 [2021-10-28 09:52:54,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:55,002 INFO L354 Elim1Store]: treesize reduction 880, result has 10.5 percent of original size [2021-10-28 09:52:55,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 47 case distinctions, treesize of input 443 treesize of output 425 [2021-10-28 09:52:55,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:55,248 INFO L354 Elim1Store]: treesize reduction 544, result has 11.5 percent of original size [2021-10-28 09:52:55,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 47 case distinctions, treesize of input 370 treesize of output 282 [2021-10-28 09:52:55,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 412 treesize of output 388 [2021-10-28 09:52:55,290 INFO L354 Elim1Store]: treesize reduction 257, result has 1.5 percent of original size [2021-10-28 09:52:55,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 385 treesize of output 349 [2021-10-28 09:52:55,339 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-10-28 09:52:55,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 319 treesize of output 311 [2021-10-28 09:52:55,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:55,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:55,937 INFO L354 Elim1Store]: treesize reduction 200, result has 0.5 percent of original size [2021-10-28 09:52:55,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 3 disjoint index pairs (out of 55 index pairs), introduced 15 new quantified variables, introduced 55 case distinctions, treesize of input 339 treesize of output 237 [2021-10-28 09:52:55,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:55,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:52:55,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-28 09:52:55,980 INFO L354 Elim1Store]: treesize reduction 560, result has 0.2 percent of original size [2021-10-28 09:52:55,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 3 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 368 treesize of output 386 [2021-10-28 09:52:55,996 INFO L354 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2021-10-28 09:52:55,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 353 treesize of output 352 [2021-10-28 09:53:13,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 09:53:13,924 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 09:53:13,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-28 09:53:13,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:53:13,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-10-28 09:53:13,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722583482] [2021-10-28 09:53:13,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 09:53:13,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:53:13,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 09:53:13,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=944, Unknown=3, NotChecked=0, Total=1056 [2021-10-28 09:53:13,927 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:13,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:53:13,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-28 09:53:14,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-28 09:53:14,129 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@33c72c6f at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:869) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-28 09:53:14,131 INFO L168 Benchmark]: Toolchain (without parser) took 681949.15 ms. Allocated memory was 102.8 MB in the beginning and 557.8 MB in the end (delta: 455.1 MB). Free memory was 69.0 MB in the beginning and 358.3 MB in the end (delta: -289.3 MB). Peak memory consumption was 165.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:14,131 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 102.8 MB. Free memory is still 55.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:53:14,147 INFO L168 Benchmark]: CACSL2BoogieTranslator took 558.92 ms. Allocated memory was 102.8 MB in the beginning and 140.5 MB in the end (delta: 37.7 MB). Free memory was 68.7 MB in the beginning and 105.0 MB in the end (delta: -36.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:14,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.95 ms. Allocated memory is still 140.5 MB. Free memory was 105.0 MB in the beginning and 102.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:14,147 INFO L168 Benchmark]: Boogie Preprocessor took 59.24 ms. Allocated memory is still 140.5 MB. Free memory was 102.9 MB in the beginning and 100.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:14,147 INFO L168 Benchmark]: RCFGBuilder took 649.35 ms. Allocated memory is still 140.5 MB. Free memory was 100.9 MB in the beginning and 82.6 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:14,147 INFO L168 Benchmark]: TraceAbstraction took 680585.90 ms. Allocated memory was 140.5 MB in the beginning and 557.8 MB in the end (delta: 417.3 MB). Free memory was 82.6 MB in the beginning and 358.3 MB in the end (delta: -275.7 MB). Peak memory consumption was 143.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:14,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 102.8 MB. Free memory is still 55.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 558.92 ms. Allocated memory was 102.8 MB in the beginning and 140.5 MB in the end (delta: 37.7 MB). Free memory was 68.7 MB in the beginning and 105.0 MB in the end (delta: -36.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.95 ms. Allocated memory is still 140.5 MB. Free memory was 105.0 MB in the beginning and 102.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.24 ms. Allocated memory is still 140.5 MB. Free memory was 102.9 MB in the beginning and 100.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 649.35 ms. Allocated memory is still 140.5 MB. Free memory was 100.9 MB in the beginning and 82.6 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 680585.90 ms. Allocated memory was 140.5 MB in the beginning and 557.8 MB in the end (delta: 417.3 MB). Free memory was 82.6 MB in the beginning and 358.3 MB in the end (delta: -275.7 MB). Peak memory consumption was 143.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@33c72c6f de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@33c72c6f: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:53:16,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:53:16,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:53:16,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:53:16,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:53:16,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:53:16,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:53:16,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:53:16,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:53:16,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:53:16,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:53:16,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:53:16,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:53:16,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:53:16,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:53:16,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:53:16,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:53:16,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:53:16,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:53:16,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:53:16,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:53:16,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:53:16,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:53:16,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:53:16,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:53:16,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:53:16,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:53:16,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:53:16,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:53:16,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:53:16,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:53:16,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:53:16,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:53:16,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:53:16,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:53:16,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:53:16,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:53:16,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:53:16,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:53:16,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:53:16,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:53:16,471 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 09:53:16,500 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:53:16,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:53:16,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:53:16,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:53:16,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:53:16,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:53:16,503 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:53:16,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:53:16,503 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:53:16,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:53:16,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:53:16,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:53:16,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:53:16,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:53:16,504 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:53:16,504 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:53:16,505 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:53:16,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:53:16,505 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:53:16,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:53:16,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:53:16,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:53:16,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:53:16,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:53:16,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:53:16,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:53:16,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:53:16,508 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:53:16,509 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:53:16,509 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:53:16,509 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:53:16,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:53:16,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:53:16,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:53:16,510 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c858394bc83ab2c402eb20052f936c0a6aa98b2b6b6c704be79c039778bcff97 [2021-10-28 09:53:16,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:53:16,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:53:16,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:53:16,943 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:53:16,944 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:53:16,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/forester-heap/dll-queue-1.i [2021-10-28 09:53:17,019 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/data/d4ad9a799/8cb57fe258d841eb948a55bfa9fc8352/FLAG29a8b8069 [2021-10-28 09:53:17,663 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:53:17,669 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i [2021-10-28 09:53:17,690 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/data/d4ad9a799/8cb57fe258d841eb948a55bfa9fc8352/FLAG29a8b8069 [2021-10-28 09:53:17,880 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/data/d4ad9a799/8cb57fe258d841eb948a55bfa9fc8352 [2021-10-28 09:53:17,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:53:17,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:53:17,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:53:17,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:53:17,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:53:17,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:53:17" (1/1) ... [2021-10-28 09:53:17,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@141bbd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:17, skipping insertion in model container [2021-10-28 09:53:17,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:53:17" (1/1) ... [2021-10-28 09:53:17,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:53:17,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:53:18,379 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22460,22473] [2021-10-28 09:53:18,384 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22531,22544] [2021-10-28 09:53:18,386 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22605,22618] [2021-10-28 09:53:18,389 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22697,22710] [2021-10-28 09:53:18,391 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22774,22787] [2021-10-28 09:53:18,393 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22869,22882] [2021-10-28 09:53:18,395 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22946,22959] [2021-10-28 09:53:18,398 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23029,23042] [2021-10-28 09:53:18,400 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23124,23137] [2021-10-28 09:53:18,402 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23201,23214] [2021-10-28 09:53:18,407 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23284,23297] [2021-10-28 09:53:18,410 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23373,23386] [2021-10-28 09:53:18,412 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23459,23472] [2021-10-28 09:53:18,415 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23604,23617] [2021-10-28 09:53:18,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:53:18,461 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:53:18,526 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22460,22473] [2021-10-28 09:53:18,529 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22531,22544] [2021-10-28 09:53:18,534 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22605,22618] [2021-10-28 09:53:18,535 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22697,22710] [2021-10-28 09:53:18,538 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22774,22787] [2021-10-28 09:53:18,540 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22869,22882] [2021-10-28 09:53:18,541 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[22946,22959] [2021-10-28 09:53:18,542 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23029,23042] [2021-10-28 09:53:18,544 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23124,23137] [2021-10-28 09:53:18,546 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23201,23214] [2021-10-28 09:53:18,552 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23284,23297] [2021-10-28 09:53:18,554 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23373,23386] [2021-10-28 09:53:18,558 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23459,23472] [2021-10-28 09:53:18,562 WARN L228 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_7a935eac-3880-45eb-94c7-0fd03cf1867e/sv-benchmarks/c/forester-heap/dll-queue-1.i[23604,23617] [2021-10-28 09:53:18,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:53:18,617 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:53:18,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:18 WrapperNode [2021-10-28 09:53:18,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:53:18,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:53:18,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:53:18,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:53:18,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:18" (1/1) ... [2021-10-28 09:53:18,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:18" (1/1) ... [2021-10-28 09:53:18,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:53:18,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:53:18,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:53:18,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:53:18,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:18" (1/1) ... [2021-10-28 09:53:18,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:18" (1/1) ... [2021-10-28 09:53:18,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:18" (1/1) ... [2021-10-28 09:53:18,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:18" (1/1) ... [2021-10-28 09:53:18,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:18" (1/1) ... [2021-10-28 09:53:18,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:18" (1/1) ... [2021-10-28 09:53:18,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:18" (1/1) ... [2021-10-28 09:53:18,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:53:18,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:53:18,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:53:18,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:53:18,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:18" (1/1) ... [2021-10-28 09:53:18,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:53:18,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:53:18,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:53:18,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:53:18,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 09:53:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:53:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:53:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:53:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:53:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:53:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 09:53:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:53:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:53:18,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:53:19,452 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:53:19,452 INFO L299 CfgBuilder]: Removed 35 assume(true) statements. [2021-10-28 09:53:19,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:53:19 BoogieIcfgContainer [2021-10-28 09:53:19,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:53:19,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:53:19,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:53:19,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:53:19,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:53:17" (1/3) ... [2021-10-28 09:53:19,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3c83c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:53:19, skipping insertion in model container [2021-10-28 09:53:19,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:53:18" (2/3) ... [2021-10-28 09:53:19,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3c83c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:53:19, skipping insertion in model container [2021-10-28 09:53:19,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:53:19" (3/3) ... [2021-10-28 09:53:19,465 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-queue-1.i [2021-10-28 09:53:19,471 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:53:19,472 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-28 09:53:19,544 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:53:19,552 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:53:19,552 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-10-28 09:53:19,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 67 states have (on average 2.029850746268657) internal successors, (136), 81 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:19,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-28 09:53:19,578 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:53:19,579 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-28 09:53:19,579 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:53:19,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:19,586 INFO L85 PathProgramCache]: Analyzing trace with hash 28699591, now seen corresponding path program 1 times [2021-10-28 09:53:19,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:53:19,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423658378] [2021-10-28 09:53:19,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:19,603 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:53:19,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:53:19,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:53:19,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:53:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:19,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:53:19,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:53:19,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:19,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:53:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:19,837 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:53:19,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423658378] [2021-10-28 09:53:19,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423658378] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:19,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:19,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 09:53:19,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191725273] [2021-10-28 09:53:19,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:53:19,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:53:19,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:53:19,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:53:19,861 INFO L87 Difference]: Start difference. First operand has 82 states, 67 states have (on average 2.029850746268657) internal successors, (136), 81 states have internal predecessors, (136), 0 states have call successors, (0), 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:19,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:53:19,952 INFO L93 Difference]: Finished difference Result 153 states and 263 transitions. [2021-10-28 09:53:19,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:53:19,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-10-28 09:53:19,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:53:19,965 INFO L225 Difference]: With dead ends: 153 [2021-10-28 09:53:19,966 INFO L226 Difference]: Without dead ends: 67 [2021-10-28 09:53:19,969 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:53:19,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-28 09:53:20,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-10-28 09:53:20,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.293103448275862) internal successors, (75), 66 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:20,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2021-10-28 09:53:20,007 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 5 [2021-10-28 09:53:20,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:53:20,008 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2021-10-28 09:53:20,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:20,008 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2021-10-28 09:53:20,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:53:20,009 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:53:20,009 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:20,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:53:20,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:53:20,214 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:53:20,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:20,215 INFO L85 PathProgramCache]: Analyzing trace with hash 296515339, now seen corresponding path program 1 times [2021-10-28 09:53:20,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:53:20,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918493678] [2021-10-28 09:53:20,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:20,217 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:53:20,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:53:20,221 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:53:20,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:53:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:20,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:53:20,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:53:20,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:53:20,542 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-28 09:53:20,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 42 [2021-10-28 09:53:20,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:20,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:53:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:20,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:53:20,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918493678] [2021-10-28 09:53:20,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918493678] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:20,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:20,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 4 [2021-10-28 09:53:20,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579260353] [2021-10-28 09:53:20,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:53:20,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:53:20,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:53:20,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:53:20,725 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:20,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:53:20,838 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2021-10-28 09:53:20,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:53:20,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 8 [2021-10-28 09:53:20,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:53:20,840 INFO L225 Difference]: With dead ends: 67 [2021-10-28 09:53:20,840 INFO L226 Difference]: Without dead ends: 65 [2021-10-28 09:53:20,840 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:53:20,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-28 09:53:20,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-10-28 09:53:20,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.280701754385965) internal successors, (73), 64 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:20,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2021-10-28 09:53:20,849 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 8 [2021-10-28 09:53:20,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:53:20,850 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2021-10-28 09:53:20,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:20,850 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2021-10-28 09:53:20,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:53:20,851 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:53:20,851 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:20,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:53:21,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:53:21,052 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:53:21,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:21,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1137960540, now seen corresponding path program 1 times [2021-10-28 09:53:21,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:53:21,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162474060] [2021-10-28 09:53:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:21,054 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:53:21,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:53:21,055 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:53:21,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:53:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:21,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:53:21,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:53:21,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:21,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:53:21,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:21,209 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:53:21,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162474060] [2021-10-28 09:53:21,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162474060] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:21,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:21,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-28 09:53:21,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150516747] [2021-10-28 09:53:21,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:53:21,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:53:21,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:53:21,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:53:21,214 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:21,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:53:21,328 INFO L93 Difference]: Finished difference Result 165 states and 194 transitions. [2021-10-28 09:53:21,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:53:21,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 11 [2021-10-28 09:53:21,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:53:21,331 INFO L225 Difference]: With dead ends: 165 [2021-10-28 09:53:21,333 INFO L226 Difference]: Without dead ends: 102 [2021-10-28 09:53:21,334 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:53:21,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-28 09:53:21,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 82. [2021-10-28 09:53:21,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 74 states have (on average 1.2567567567567568) internal successors, (93), 81 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:21,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2021-10-28 09:53:21,349 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 11 [2021-10-28 09:53:21,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:53:21,349 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2021-10-28 09:53:21,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:21,350 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2021-10-28 09:53:21,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 09:53:21,351 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:53:21,351 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:21,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-28 09:53:21,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:53:21,566 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:53:21,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:21,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1315213501, now seen corresponding path program 1 times [2021-10-28 09:53:21,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:53:21,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252101606] [2021-10-28 09:53:21,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:21,568 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:53:21,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:53:21,573 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:53:21,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:53:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:21,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:53:21,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:53:21,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:21,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:53:21,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:21,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:53:21,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252101606] [2021-10-28 09:53:21,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252101606] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:21,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:21,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 09:53:21,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164717585] [2021-10-28 09:53:21,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:53:21,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:53:21,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:53:21,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:53:21,790 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:21,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:53:21,896 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2021-10-28 09:53:21,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:53:21,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-28 09:53:21,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:53:21,900 INFO L225 Difference]: With dead ends: 98 [2021-10-28 09:53:21,900 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 09:53:21,901 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:53:21,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 09:53:21,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-28 09:53:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 77 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:21,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2021-10-28 09:53:21,918 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 14 [2021-10-28 09:53:21,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:53:21,918 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2021-10-28 09:53:21,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:21,919 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2021-10-28 09:53:21,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:53:21,920 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:53:21,924 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:21,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:53:22,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:53:22,137 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:53:22,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:22,137 INFO L85 PathProgramCache]: Analyzing trace with hash 129337073, now seen corresponding path program 1 times [2021-10-28 09:53:22,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:53:22,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58509186] [2021-10-28 09:53:22,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:22,138 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:53:22,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:53:22,139 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:53:22,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 09:53:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:22,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:53:22,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:53:22,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:53:22,380 INFO L354 Elim1Store]: treesize reduction 74, result has 20.4 percent of original size [2021-10-28 09:53:22,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 69 [2021-10-28 09:53:22,408 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-28 09:53:22,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 86 [2021-10-28 09:53:22,556 INFO L354 Elim1Store]: treesize reduction 112, result has 20.0 percent of original size [2021-10-28 09:53:22,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 64 [2021-10-28 09:53:23,351 INFO L354 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2021-10-28 09:53:23,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 38 [2021-10-28 09:53:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:23,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:53:23,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3298 treesize of output 3282 [2021-10-28 09:53:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:24,730 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:53:24,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58509186] [2021-10-28 09:53:24,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58509186] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 09:53:24,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:53:24,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-10-28 09:53:24,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116299156] [2021-10-28 09:53:24,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:53:24,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:53:24,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:53:24,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:53:24,732 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:26,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:53:26,215 INFO L93 Difference]: Finished difference Result 148 states and 164 transitions. [2021-10-28 09:53:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:53:26,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-28 09:53:26,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:53:26,217 INFO L225 Difference]: With dead ends: 148 [2021-10-28 09:53:26,217 INFO L226 Difference]: Without dead ends: 146 [2021-10-28 09:53:26,218 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:53:26,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-28 09:53:26,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 90. [2021-10-28 09:53:26,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 89 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2021-10-28 09:53:26,228 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 17 [2021-10-28 09:53:26,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:53:26,229 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2021-10-28 09:53:26,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:26,229 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2021-10-28 09:53:26,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 09:53:26,230 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:53:26,230 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:26,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:53:26,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:53:26,444 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:53:26,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:26,445 INFO L85 PathProgramCache]: Analyzing trace with hash 32191693, now seen corresponding path program 1 times [2021-10-28 09:53:26,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:53:26,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462135137] [2021-10-28 09:53:26,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:26,445 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:53:26,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:53:26,446 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:53:26,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 09:53:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:26,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:53:26,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:53:26,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:26,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:53:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:26,680 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:53:26,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462135137] [2021-10-28 09:53:26,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462135137] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:53:26,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:26,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-28 09:53:26,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56078640] [2021-10-28 09:53:26,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:53:26,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:53:26,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:53:26,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:53:26,686 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:26,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:53:26,759 INFO L93 Difference]: Finished difference Result 176 states and 201 transitions. [2021-10-28 09:53:26,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:53:26,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-28 09:53:26,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:53:26,761 INFO L225 Difference]: With dead ends: 176 [2021-10-28 09:53:26,761 INFO L226 Difference]: Without dead ends: 102 [2021-10-28 09:53:26,762 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:53:26,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-28 09:53:26,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2021-10-28 09:53:26,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 91 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:26,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2021-10-28 09:53:26,775 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 18 [2021-10-28 09:53:26,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:53:26,776 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2021-10-28 09:53:26,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:53:26,776 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2021-10-28 09:53:26,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 09:53:26,781 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:53:26,781 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:26,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:53:26,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:53:26,997 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-10-28 09:53:26,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:53:26,997 INFO L85 PathProgramCache]: Analyzing trace with hash 43662915, now seen corresponding path program 1 times [2021-10-28 09:53:26,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:53:26,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173871651] [2021-10-28 09:53:26,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:26,998 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:53:26,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:53:27,002 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:53:27,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-28 09:53:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:27,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 09:53:27,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:53:27,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:53:27,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:53:27,312 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:53:27,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 168 treesize of output 130 [2021-10-28 09:53:27,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:53:27,350 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:53:27,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 102 treesize of output 64 [2021-10-28 09:53:27,362 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-28 09:53:27,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 73 [2021-10-28 09:53:27,476 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:53:27,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 93 [2021-10-28 09:53:27,486 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-28 09:53:27,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 88 [2021-10-28 09:53:27,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2021-10-28 09:53:28,270 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:53:28,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 52 [2021-10-28 09:53:28,277 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:53:28,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 24 [2021-10-28 09:53:28,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-28 09:53:28,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:28,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:53:28,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 85 [2021-10-28 09:53:28,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6416 treesize of output 6392 [2021-10-28 09:53:28,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39625 treesize of output 39209 [2021-10-28 09:53:32,571 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:53:32,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173871651] [2021-10-28 09:53:32,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-28 09:53:32,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1409948705] [2021-10-28 09:53:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:32,573 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-28 09:53:32,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/cvc4 [2021-10-28 09:53:32,586 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-28 09:53:32,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-28 09:53:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:32,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:53:32,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:53:32,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:53:32,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:53:33,016 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-28 09:53:33,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 168 treesize of output 130 [2021-10-28 09:53:33,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 09:53:33,053 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-10-28 09:53:33,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 123 treesize of output 73 [2021-10-28 09:53:33,068 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-28 09:53:33,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 73 [2021-10-28 09:53:33,148 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:53:33,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 93 [2021-10-28 09:53:33,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2021-10-28 09:53:33,163 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-28 09:53:33,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 80 [2021-10-28 09:53:34,068 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:53:34,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 52 [2021-10-28 09:53:34,080 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-28 09:53:34,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 24 [2021-10-28 09:53:34,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-28 09:53:34,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:34,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:53:34,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 85 [2021-10-28 09:53:34,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8515 treesize of output 8483 [2021-10-28 09:53:34,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11714 treesize of output 11658 [2021-10-28 09:53:35,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-28 09:53:35,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120348147] [2021-10-28 09:53:35,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:35,352 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:53:35,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:53:35,353 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:53:35,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 09:53:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:35,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 09:53:35,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:53:35,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-28 09:53:35,751 INFO L354 Elim1Store]: treesize reduction 78, result has 16.1 percent of original size [2021-10-28 09:53:35,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 188 treesize of output 150 [2021-10-28 09:53:35,798 INFO L354 Elim1Store]: treesize reduction 98, result has 16.2 percent of original size [2021-10-28 09:53:35,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 180 treesize of output 130 [2021-10-28 09:53:35,818 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-28 09:53:35,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 130 [2021-10-28 09:53:35,995 INFO L354 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2021-10-28 09:53:35,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 133 treesize of output 93 [2021-10-28 09:53:36,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2021-10-28 09:53:36,022 INFO L354 Elim1Store]: treesize reduction 73, result has 8.8 percent of original size [2021-10-28 09:53:36,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 98 treesize of output 80 [2021-10-28 09:53:36,810 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-10-28 09:53:36,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 61 [2021-10-28 09:53:36,822 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-28 09:53:36,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 27 [2021-10-28 09:53:36,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-28 09:53:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:53:36,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:53:37,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 85 [2021-10-28 09:53:37,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12362 treesize of output 12314 [2021-10-28 09:53:37,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32002 treesize of output 31714 [2021-10-28 09:53:39,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-28 09:53:39,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:53:39,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-28 09:53:39,313 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-28 09:53:39,314 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-28 09:53:39,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:53:39,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:53:39,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:53:39,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:53:39,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:53:39,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:53:39,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:53:39,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:53:39,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:53:39,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:53:39,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:53:39,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:53:39,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:53:39,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:53:39,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:53:39,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-10-28 09:53:39,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-10-28 09:53:39,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt [2021-10-28 09:53:39,930 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:53:39,932 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:53:39,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:53:39 BoogieIcfgContainer [2021-10-28 09:53:39,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:53:39,944 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:53:39,944 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:53:39,945 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:53:39,945 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:53:19" (3/4) ... [2021-10-28 09:53:39,948 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:53:39,948 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:53:39,949 INFO L168 Benchmark]: Toolchain (without parser) took 22064.33 ms. Allocated memory was 67.1 MB in the beginning and 497.0 MB in the end (delta: 429.9 MB). Free memory was 47.7 MB in the beginning and 346.7 MB in the end (delta: -299.0 MB). Peak memory consumption was 134.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:39,949 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 67.1 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:53:39,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.42 ms. Allocated memory is still 67.1 MB. Free memory was 47.5 MB in the beginning and 44.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:39,950 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.62 ms. Allocated memory is still 67.1 MB. Free memory was 44.0 MB in the beginning and 41.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:39,950 INFO L168 Benchmark]: Boogie Preprocessor took 55.76 ms. Allocated memory is still 67.1 MB. Free memory was 41.5 MB in the beginning and 39.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:39,951 INFO L168 Benchmark]: RCFGBuilder took 681.84 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 39.2 MB in the beginning and 63.1 MB in the end (delta: -23.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:39,951 INFO L168 Benchmark]: TraceAbstraction took 20486.27 ms. Allocated memory was 90.2 MB in the beginning and 497.0 MB in the end (delta: 406.8 MB). Free memory was 62.3 MB in the beginning and 346.7 MB in the end (delta: -284.4 MB). Peak memory consumption was 241.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:53:39,952 INFO L168 Benchmark]: Witness Printer took 3.99 ms. Allocated memory is still 497.0 MB. Free memory is still 346.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:53:39,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 67.1 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 730.42 ms. Allocated memory is still 67.1 MB. Free memory was 47.5 MB in the beginning and 44.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.62 ms. Allocated memory is still 67.1 MB. Free memory was 44.0 MB in the beginning and 41.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.76 ms. Allocated memory is still 67.1 MB. Free memory was 41.5 MB in the beginning and 39.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 681.84 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 39.2 MB in the beginning and 63.1 MB in the end (delta: -23.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20486.27 ms. Allocated memory was 90.2 MB in the beginning and 497.0 MB in the end (delta: 406.8 MB). Free memory was 62.3 MB in the beginning and 346.7 MB in the end (delta: -284.4 MB). Peak memory consumption was 241.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.99 ms. Allocated memory is still 497.0 MB. Free memory is still 346.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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 - UnprovableResult [Line: 1055]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] head->data = 0 [L1001] SLL* item = head; [L1002] int status = 0; [L1004] COND TRUE __VERIFIER_nondet_int() [L1006] item->next = malloc(sizeof(SLL)) [L1007] EXPR item->next [L1007] item->next->prev = item [L1008] EXPR item->next [L1008] item = item->next [L1009] item->next = ((void*)0) [L1011] COND TRUE !status [L1013] item->data = 1 [L1014] status = 1 [L1027] COND FALSE !(!(head != ((void*)0))) [L1028] COND FALSE !(!(item != ((void*)0))) [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1031] COND FALSE !(!(head != ((void*)0))) [L1032] COND TRUE status == 1 [L1034] COND FALSE !(!(head != ((void*)0))) [L1035] EXPR head->next [L1035] COND FALSE !(!(head->next != ((void*)0))) [L1037] COND FALSE !(status == 2) [L1043] COND FALSE !(status == 3) [L1052] EXPR head->next [L1052] item = head->next [L1053] COND TRUE item && __VERIFIER_nondet_int() [L1055] EXPR !status || item->data > 0 [L1055] EXPR item->data [L1055] EXPR !status || item->data > 0 [L1055] COND TRUE !(!status || item->data > 0) [L1055] reach_error() - UnprovableResult [Line: 1027]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1034]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1035]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1039]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1049]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 82 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 20.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 390 SDtfs, 403 SDslu, 634 SDs, 0 SdLazy, 281 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=6, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 86 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 158 ConstructedInterpolants, 13 QuantifiedInterpolants, 2291 SizeOfPredicates, 22 NumberOfNonLiveVariables, 387 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 2/5 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:53:40,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a935eac-3880-45eb-94c7-0fd03cf1867e/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...