./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-buckets-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-buckets-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6b726a83620fff2a21a6dbfdec50e244c1786dd86dd76b1719515a59b3627ac --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 21:26:22,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:26:22,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:26:22,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:26:22,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:26:22,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:26:22,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:26:22,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:26:22,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:26:22,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:26:22,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:26:22,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:26:22,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:26:22,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:26:22,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:26:22,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:26:22,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:26:22,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:26:22,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:26:22,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:26:22,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:26:22,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:26:22,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:26:22,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:26:22,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:26:22,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:26:22,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:26:22,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:26:22,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:26:22,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:26:22,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:26:22,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:26:22,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:26:22,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:26:22,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:26:22,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:26:22,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:26:22,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:26:22,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:26:22,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:26:22,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:26:22,926 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 21:26:22,980 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:26:22,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:26:22,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:26:22,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:26:22,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:26:22,984 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:26:22,984 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:26:22,985 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:26:22,985 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:26:22,985 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:26:22,987 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:26:22,987 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:26:22,987 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:26:22,988 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:26:22,988 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:26:22,988 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:26:22,989 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:26:22,989 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:26:22,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:26:22,992 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:26:22,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:26:22,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:26:22,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:26:22,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:26:22,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:26:22,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:26:22,995 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:26:22,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:26:22,996 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:26:22,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:26:22,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:26:22,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:26:22,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:26:22,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:26:22,998 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:26:22,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:26:22,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:26:22,999 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:26:22,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:26:23,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:26:23,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:26:23,001 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_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6b726a83620fff2a21a6dbfdec50e244c1786dd86dd76b1719515a59b3627ac [2022-11-20 21:26:23,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:26:23,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:26:23,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:26:23,410 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:26:23,410 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:26:23,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/forester-heap/sll-buckets-1.i [2022-11-20 21:26:26,734 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:26:27,098 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:26:27,098 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/sv-benchmarks/c/forester-heap/sll-buckets-1.i [2022-11-20 21:26:27,112 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/data/58dcbcd11/5de0a5ad2d5c4ccdb59be6d3b17f6180/FLAG29d28eecf [2022-11-20 21:26:27,129 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/data/58dcbcd11/5de0a5ad2d5c4ccdb59be6d3b17f6180 [2022-11-20 21:26:27,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:26:27,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:26:27,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:26:27,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:26:27,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:26:27,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:26:27" (1/1) ... [2022-11-20 21:26:27,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28debe16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:27, skipping insertion in model container [2022-11-20 21:26:27,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:26:27" (1/1) ... [2022-11-20 21:26:27,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:26:27,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:26:27,528 WARN L237 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_8f321089-405c-431f-88ff-e4ef87b584ef/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22663,22676] [2022-11-20 21:26:27,535 WARN L237 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_8f321089-405c-431f-88ff-e4ef87b584ef/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22734,22747] [2022-11-20 21:26:27,538 WARN L237 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_8f321089-405c-431f-88ff-e4ef87b584ef/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22862,22875] [2022-11-20 21:26:27,542 WARN L237 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_8f321089-405c-431f-88ff-e4ef87b584ef/sv-benchmarks/c/forester-heap/sll-buckets-1.i[23275,23288] [2022-11-20 21:26:27,543 WARN L237 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_8f321089-405c-431f-88ff-e4ef87b584ef/sv-benchmarks/c/forester-heap/sll-buckets-1.i[23364,23377] [2022-11-20 21:26:27,552 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:26:27,564 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:26:27,619 WARN L237 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_8f321089-405c-431f-88ff-e4ef87b584ef/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22663,22676] [2022-11-20 21:26:27,620 WARN L237 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_8f321089-405c-431f-88ff-e4ef87b584ef/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22734,22747] [2022-11-20 21:26:27,622 WARN L237 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_8f321089-405c-431f-88ff-e4ef87b584ef/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22862,22875] [2022-11-20 21:26:27,642 WARN L237 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_8f321089-405c-431f-88ff-e4ef87b584ef/sv-benchmarks/c/forester-heap/sll-buckets-1.i[23275,23288] [2022-11-20 21:26:27,643 WARN L237 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_8f321089-405c-431f-88ff-e4ef87b584ef/sv-benchmarks/c/forester-heap/sll-buckets-1.i[23364,23377] [2022-11-20 21:26:27,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:26:27,671 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:26:27,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:27 WrapperNode [2022-11-20 21:26:27,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:26:27,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:26:27,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:26:27,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:26:27,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:27" (1/1) ... [2022-11-20 21:26:27,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:27" (1/1) ... [2022-11-20 21:26:27,739 INFO L138 Inliner]: procedures = 119, calls = 42, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 155 [2022-11-20 21:26:27,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:26:27,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:26:27,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:26:27,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:26:27,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:27" (1/1) ... [2022-11-20 21:26:27,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:27" (1/1) ... [2022-11-20 21:26:27,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:27" (1/1) ... [2022-11-20 21:26:27,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:27" (1/1) ... [2022-11-20 21:26:27,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:27" (1/1) ... [2022-11-20 21:26:27,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:27" (1/1) ... [2022-11-20 21:26:27,798 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:27" (1/1) ... [2022-11-20 21:26:27,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:27" (1/1) ... [2022-11-20 21:26:27,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:26:27,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:26:27,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:26:27,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:26:27,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:27" (1/1) ... [2022-11-20 21:26:27,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:26:27,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:26:27,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:26:27,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:26:27,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 21:26:27,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 21:26:27,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 21:26:27,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:26:27,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 21:26:27,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 21:26:27,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 21:26:27,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 21:26:27,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:26:27,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:26:28,041 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:26:28,043 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:26:28,553 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:26:28,675 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:26:28,676 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-20 21:26:28,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:26:28 BoogieIcfgContainer [2022-11-20 21:26:28,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:26:28,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:26:28,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:26:28,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:26:28,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:26:27" (1/3) ... [2022-11-20 21:26:28,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18434232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:26:28, skipping insertion in model container [2022-11-20 21:26:28,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:27" (2/3) ... [2022-11-20 21:26:28,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18434232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:26:28, skipping insertion in model container [2022-11-20 21:26:28,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:26:28" (3/3) ... [2022-11-20 21:26:28,699 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-buckets-1.i [2022-11-20 21:26:28,723 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:26:28,724 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-20 21:26:28,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:26:28,855 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a001c3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:26:28,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-20 21:26:28,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 31 states have (on average 1.935483870967742) internal successors, (60), 36 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:26:28,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 21:26:28,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:26:28,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 21:26:28,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 21:26:28,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:26:28,912 INFO L85 PathProgramCache]: Analyzing trace with hash 196178540, now seen corresponding path program 1 times [2022-11-20 21:26:28,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:26:28,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672498432] [2022-11-20 21:26:28,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:26:28,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:26:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:26:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:26:29,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:26:29,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672498432] [2022-11-20 21:26:29,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672498432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:26:29,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:26:29,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:26:29,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952178629] [2022-11-20 21:26:29,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:26:29,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:26:29,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:26:29,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:26:29,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:26:29,491 INFO L87 Difference]: Start difference. First operand has 37 states, 31 states have (on average 1.935483870967742) internal successors, (60), 36 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) 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) [2022-11-20 21:26:29,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:26:29,682 INFO L93 Difference]: Finished difference Result 96 states and 160 transitions. [2022-11-20 21:26:29,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:26:29,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) 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 [2022-11-20 21:26:29,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:26:29,696 INFO L225 Difference]: With dead ends: 96 [2022-11-20 21:26:29,697 INFO L226 Difference]: Without dead ends: 59 [2022-11-20 21:26:29,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:26:29,705 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 83 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:26:29,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 56 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:26:29,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-20 21:26:29,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2022-11-20 21:26:29,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.303030303030303) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:26:29,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-11-20 21:26:29,765 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 5 [2022-11-20 21:26:29,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:26:29,766 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-11-20 21:26:29,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) 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) [2022-11-20 21:26:29,766 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-11-20 21:26:29,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 21:26:29,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:26:29,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:26:29,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:26:29,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 21:26:29,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:26:29,771 INFO L85 PathProgramCache]: Analyzing trace with hash -450856688, now seen corresponding path program 1 times [2022-11-20 21:26:29,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:26:29,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606616906] [2022-11-20 21:26:29,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:26:29,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:26:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:26:29,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:26:29,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:26:29,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606616906] [2022-11-20 21:26:29,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606616906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:26:29,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:26:29,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:26:29,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158380792] [2022-11-20 21:26:29,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:26:29,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:26:29,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:26:29,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:26:29,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:26:29,895 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:26:30,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:26:30,032 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-11-20 21:26:30,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:26:30,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-11-20 21:26:30,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:26:30,033 INFO L225 Difference]: With dead ends: 41 [2022-11-20 21:26:30,034 INFO L226 Difference]: Without dead ends: 39 [2022-11-20 21:26:30,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:26:30,035 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 19 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:26:30,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 46 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:26:30,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-20 21:26:30,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2022-11-20 21:26:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:26:30,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-11-20 21:26:30,043 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 7 [2022-11-20 21:26:30,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:26:30,044 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-11-20 21:26:30,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:26:30,044 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-11-20 21:26:30,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 21:26:30,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:26:30,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:26:30,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 21:26:30,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 21:26:30,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:26:30,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1874340424, now seen corresponding path program 1 times [2022-11-20 21:26:30,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:26:30,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252293887] [2022-11-20 21:26:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:26:30,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:26:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:26:30,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:26:30,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:26:30,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252293887] [2022-11-20 21:26:30,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252293887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:26:30,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:26:30,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:26:30,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990611307] [2022-11-20 21:26:30,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:26:30,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:26:30,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:26:30,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:26:30,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:26:30,137 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:26:30,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:26:30,282 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-11-20 21:26:30,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:26:30,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 [2022-11-20 21:26:30,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:26:30,284 INFO L225 Difference]: With dead ends: 39 [2022-11-20 21:26:30,284 INFO L226 Difference]: Without dead ends: 37 [2022-11-20 21:26:30,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:26:30,286 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:26:30,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 54 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:26:30,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-20 21:26:30,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-11-20 21:26:30,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:26:30,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-20 21:26:30,294 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 8 [2022-11-20 21:26:30,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:26:30,295 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-20 21:26:30,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:26:30,295 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-20 21:26:30,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 21:26:30,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:26:30,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:26:30,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 21:26:30,297 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 21:26:30,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:26:30,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2023416261, now seen corresponding path program 1 times [2022-11-20 21:26:30,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:26:30,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483493190] [2022-11-20 21:26:30,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:26:30,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:26:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:26:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:26:31,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:26:31,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483493190] [2022-11-20 21:26:31,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483493190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:26:31,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:26:31,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:26:31,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606749317] [2022-11-20 21:26:31,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:26:31,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:26:31,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:26:31,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:26:31,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:26:31,517 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 5 states, 5 states have (on average 1.8) 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) [2022-11-20 21:26:31,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:26:31,738 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2022-11-20 21:26:31,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:26:31,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) 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 [2022-11-20 21:26:31,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:26:31,740 INFO L225 Difference]: With dead ends: 52 [2022-11-20 21:26:31,741 INFO L226 Difference]: Without dead ends: 41 [2022-11-20 21:26:31,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:26:31,750 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 14 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:26:31,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 81 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:26:31,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-20 21:26:31,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2022-11-20 21:26:31,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:26:31,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2022-11-20 21:26:31,760 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 9 [2022-11-20 21:26:31,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:26:31,760 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2022-11-20 21:26:31,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) 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) [2022-11-20 21:26:31,760 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2022-11-20 21:26:31,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 21:26:31,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:26:31,761 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:26:31,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 21:26:31,762 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 21:26:31,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:26:31,768 INFO L85 PathProgramCache]: Analyzing trace with hash 783479132, now seen corresponding path program 1 times [2022-11-20 21:26:31,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:26:31,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367918157] [2022-11-20 21:26:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:26:31,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:26:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:26:32,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:26:32,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:26:32,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367918157] [2022-11-20 21:26:32,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367918157] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:26:32,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719523115] [2022-11-20 21:26:32,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:26:32,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:26:32,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:26:32,442 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:26:32,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 21:26:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:26:32,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 21:26:32,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:26:32,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:32,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2022-11-20 21:26:32,879 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-11-20 21:26:32,880 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 64 [2022-11-20 21:26:32,938 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2022-11-20 21:26:32,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 51 treesize of output 46 [2022-11-20 21:26:33,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:33,129 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 96 [2022-11-20 21:26:33,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 104 [2022-11-20 21:26:33,169 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 61 [2022-11-20 21:26:33,204 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 21:26:33,205 INFO L350 Elim1Store]: Elim1 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 11 treesize of output 11 [2022-11-20 21:26:33,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 18 treesize of output 1 [2022-11-20 21:26:33,366 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 12 [2022-11-20 21:26:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:26:33,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:26:33,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:26:33,473 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 91 [2022-11-20 21:26:33,494 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:26:33,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 121 [2022-11-20 21:26:33,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:26:33,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719523115] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:26:33,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1998751450] [2022-11-20 21:26:33,670 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-20 21:26:33,670 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:26:33,675 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:26:33,685 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:26:33,686 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:26:33,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:34,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:34,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:34,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:34,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:34,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:34,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:34,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:34,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:34,331 INFO L217 Elim1Store]: Index analysis took 444 ms [2022-11-20 21:26:34,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-20 21:26:34,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:34,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:34,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:34,808 INFO L217 Elim1Store]: Index analysis took 282 ms [2022-11-20 21:26:35,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 26 [2022-11-20 21:26:35,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:35,404 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:35,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:35,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:36,008 INFO L321 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2022-11-20 21:26:36,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 301 treesize of output 195 [2022-11-20 21:26:36,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:36,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:36,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:36,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:36,999 INFO L321 Elim1Store]: treesize reduction 82, result has 27.4 percent of original size [2022-11-20 21:26:36,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 282 treesize of output 217 [2022-11-20 21:26:37,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 59 [2022-11-20 21:26:37,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 67 [2022-11-20 21:26:37,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 53 [2022-11-20 21:26:37,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 57 [2022-11-20 21:26:37,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 47 [2022-11-20 21:26:37,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 56 [2022-11-20 21:26:37,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 59 [2022-11-20 21:26:37,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:37,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:37,745 INFO L321 Elim1Store]: treesize reduction 124, result has 19.0 percent of original size [2022-11-20 21:26:37,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 410 treesize of output 303 [2022-11-20 21:26:37,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 211 treesize of output 194 [2022-11-20 21:26:37,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:37,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 290 [2022-11-20 21:26:38,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,083 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-20 21:26:38,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 58 [2022-11-20 21:26:38,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,216 INFO L321 Elim1Store]: treesize reduction 54, result has 15.6 percent of original size [2022-11-20 21:26:38,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 73 [2022-11-20 21:26:38,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,774 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-20 21:26:38,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 179 [2022-11-20 21:26:38,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-11-20 21:26:38,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,874 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-20 21:26:38,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 137 treesize of output 129 [2022-11-20 21:26:38,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-11-20 21:26:38,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:38,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-11-20 21:26:40,093 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:26:43,045 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '637#(and (= |ULTIMATE.start_main_~itr~0#1.offset| 0) (= |ULTIMATE.start_main_~item~0#1.offset| 0) (= |ULTIMATE.start_main_~bucket~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~bcki~0#1.base|) (+ 8 |ULTIMATE.start_main_~bcki~0#1.offset|)) (select (select |#memory_int| |ULTIMATE.start_main_~item~0#1.base|) (+ 4 |ULTIMATE.start_main_~item~0#1.offset|))) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~itr~0#1.base| 0) (= |ULTIMATE.start_main_~bcki~0#1.base| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~bcki~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-20 21:26:43,045 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:26:43,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:26:43,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-20 21:26:43,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990076539] [2022-11-20 21:26:43,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:26:43,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 21:26:43,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:26:43,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 21:26:43,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-20 21:26:43,048 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 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) [2022-11-20 21:26:43,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:26:43,384 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2022-11-20 21:26:43,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 21:26:43,387 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 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 13 [2022-11-20 21:26:43,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:26:43,390 INFO L225 Difference]: With dead ends: 82 [2022-11-20 21:26:43,390 INFO L226 Difference]: Without dead ends: 80 [2022-11-20 21:26:43,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-20 21:26:43,391 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 71 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:26:43,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 74 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 33 Unchecked, 0.2s Time] [2022-11-20 21:26:43,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-20 21:26:43,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 44. [2022-11-20 21:26:43,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 43 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:26:43,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2022-11-20 21:26:43,416 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 13 [2022-11-20 21:26:43,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:26:43,417 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2022-11-20 21:26:43,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 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) [2022-11-20 21:26:43,417 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2022-11-20 21:26:43,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 21:26:43,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:26:43,420 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:26:43,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 21:26:43,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:26:43,627 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-20 21:26:43,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:26:43,627 INFO L85 PathProgramCache]: Analyzing trace with hash -770353938, now seen corresponding path program 1 times [2022-11-20 21:26:43,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:26:43,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696680282] [2022-11-20 21:26:43,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:26:43,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:26:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:26:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:26:44,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:26:44,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696680282] [2022-11-20 21:26:44,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696680282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:26:44,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717539344] [2022-11-20 21:26:44,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:26:44,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:26:44,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:26:44,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:26:44,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f321089-405c-431f-88ff-e4ef87b584ef/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 21:26:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:26:44,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-20 21:26:44,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:26:45,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:45,031 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2022-11-20 21:26:45,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:45,042 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 36 [2022-11-20 21:26:45,085 INFO L321 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2022-11-20 21:26:45,085 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 67 [2022-11-20 21:26:45,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:45,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:45,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:45,106 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 31 [2022-11-20 21:26:45,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 23 [2022-11-20 21:26:45,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 23 [2022-11-20 21:26:45,158 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-20 21:26:45,159 INFO L350 Elim1Store]: Elim1 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 72 treesize of output 56 [2022-11-20 21:26:45,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:45,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:45,345 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 21:26:45,345 INFO L350 Elim1Store]: Elim1 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 4 case distinctions, treesize of input 75 treesize of output 59 [2022-11-20 21:26:45,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:45,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:45,363 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 43 treesize of output 48 [2022-11-20 21:26:45,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:45,532 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-20 21:26:45,533 INFO L350 Elim1Store]: Elim1 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 96 treesize of output 52 [2022-11-20 21:26:45,548 INFO L321 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-11-20 21:26:45,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 21 [2022-11-20 21:26:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:26:45,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:26:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:26:45,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717539344] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:26:45,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [810577979] [2022-11-20 21:26:45,841 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-20 21:26:45,841 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:26:45,841 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:26:45,841 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:26:45,842 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:26:46,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:46,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:46,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:46,296 INFO L217 Elim1Store]: Index analysis took 272 ms [2022-11-20 21:26:46,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 26 [2022-11-20 21:26:46,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:46,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:46,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:46,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,174 INFO L321 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2022-11-20 21:26:47,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 308 treesize of output 202 [2022-11-20 21:26:47,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:47,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:47,699 INFO L321 Elim1Store]: treesize reduction 82, result has 27.4 percent of original size [2022-11-20 21:26:47,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 289 treesize of output 224 [2022-11-20 21:26:47,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,834 INFO L321 Elim1Store]: treesize reduction 146, result has 22.8 percent of original size [2022-11-20 21:26:47,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 51 treesize of output 85 [2022-11-20 21:26:47,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 18 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 59 [2022-11-20 21:26:47,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:47,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 67 [2022-11-20 21:26:48,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 57 [2022-11-20 21:26:48,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 47 [2022-11-20 21:26:48,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 14 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 56 [2022-11-20 21:26:48,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 59 [2022-11-20 21:26:48,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 36 [2022-11-20 21:26:48,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:48,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:48,393 INFO L321 Elim1Store]: treesize reduction 196, result has 10.1 percent of original size [2022-11-20 21:26:48,394 INFO L350 Elim1Store]: Elim1 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 10 new quantified variables, introduced 21 case distinctions, treesize of input 319 treesize of output 190 [2022-11-20 21:26:48,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-11-20 21:26:48,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:48,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:48,548 INFO L321 Elim1Store]: treesize reduction 344, result has 10.9 percent of original size [2022-11-20 21:26:48,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 182 treesize of output 147 [2022-11-20 21:26:48,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-11-20 21:26:48,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2022-11-20 21:26:48,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:48,896 INFO L321 Elim1Store]: treesize reduction 124, result has 12.7 percent of original size [2022-11-20 21:26:48,897 INFO L350 Elim1Store]: Elim1 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 23 case distinctions, treesize of input 278 treesize of output 164 [2022-11-20 21:26:48,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:48,951 INFO L321 Elim1Store]: treesize reduction 37, result has 7.5 percent of original size [2022-11-20 21:26:48,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 92 [2022-11-20 21:26:49,137 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 21:26:49,151 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-20 21:26:49,209 INFO L321 Elim1Store]: treesize reduction 18, result has 64.0 percent of original size [2022-11-20 21:26:49,210 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 30 treesize of output 47 [2022-11-20 21:26:49,275 INFO L321 Elim1Store]: treesize reduction 18, result has 64.0 percent of original size [2022-11-20 21:26:49,275 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 30 treesize of output 47 [2022-11-20 21:26:49,770 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 21:26:49,838 INFO L321 Elim1Store]: treesize reduction 18, result has 64.0 percent of original size [2022-11-20 21:26:49,838 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 30 treesize of output 47 [2022-11-20 21:26:49,894 INFO L321 Elim1Store]: treesize reduction 18, result has 64.0 percent of original size [2022-11-20 21:26:49,895 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 30 treesize of output 47 [2022-11-20 21:26:49,969 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 1 [2022-11-20 21:26:50,180 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 21:26:50,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:50,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:50,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:50,993 INFO L321 Elim1Store]: treesize reduction 330, result has 38.2 percent of original size [2022-11-20 21:26:50,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 34 case distinctions, treesize of input 487 treesize of output 522 [2022-11-20 21:26:51,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:51,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:51,485 INFO L321 Elim1Store]: treesize reduction 130, result has 57.0 percent of original size [2022-11-20 21:26:51,485 INFO L350 Elim1Store]: Elim1 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 14 case distinctions, treesize of input 310 treesize of output 434 [2022-11-20 21:26:51,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:26:51,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:51,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:26:52,121 INFO L321 Elim1Store]: treesize reduction 330, result has 38.2 percent of original size [2022-11-20 21:26:52,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 33 case distinctions, treesize of input 464 treesize of output 577 [2022-11-20 21:29:18,447 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 972 DAG size of output: 972 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 21:36:22,142 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 908 DAG size of output: 908 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)