./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-sorted-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-sorted-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta --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 618946a6e113450d0f3efa55a455801e1c2225c3ba6f88e87a9e8ad02019b85f --- 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-dbf71c6-m [2022-10-17 17:40:38,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:40:38,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:40:38,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:40:38,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:40:38,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:40:38,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:40:38,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:40:38,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:40:38,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:40:38,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:40:38,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:40:38,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:40:38,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:40:38,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:40:38,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:40:38,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:40:38,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:40:38,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:40:38,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:40:38,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:40:38,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:40:38,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:40:38,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:40:38,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:40:38,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:40:38,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:40:38,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:40:38,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:40:38,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:40:38,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:40:38,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:40:38,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:40:38,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:40:38,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:40:38,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:40:38,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:40:38,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:40:38,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:40:38,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:40:38,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:40:38,739 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:40:38,803 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:40:38,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:40:38,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:40:38,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:40:38,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:40:38,805 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:40:38,805 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:40:38,806 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:40:38,806 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:40:38,806 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:40:38,807 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:40:38,807 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:40:38,808 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:40:38,808 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:40:38,808 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:40:38,808 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:40:38,809 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:40:38,809 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:40:38,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:40:38,810 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:40:38,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:40:38,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:40:38,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:40:38,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:40:38,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:40:38,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:40:38,811 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:40:38,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:40:38,812 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:40:38,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:40:38,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:40:38,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:40:38,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:40:38,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:40:38,814 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:40:38,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:40:38,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:40:38,814 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:40:38,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:40:38,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:40:38,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:40:38,815 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_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618946a6e113450d0f3efa55a455801e1c2225c3ba6f88e87a9e8ad02019b85f [2022-10-17 17:40:39,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:40:39,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:40:39,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:40:39,122 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:40:39,125 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:40:39,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/forester-heap/sll-sorted-2.i [2022-10-17 17:40:39,202 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/data/a21ada33b/54294b58e45f4dc1bc9a9369b5f91504/FLAG3a8feb4b3 [2022-10-17 17:40:39,715 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:40:39,716 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/sv-benchmarks/c/forester-heap/sll-sorted-2.i [2022-10-17 17:40:39,732 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/data/a21ada33b/54294b58e45f4dc1bc9a9369b5f91504/FLAG3a8feb4b3 [2022-10-17 17:40:40,031 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/data/a21ada33b/54294b58e45f4dc1bc9a9369b5f91504 [2022-10-17 17:40:40,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:40:40,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:40:40,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:40:40,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:40:40,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:40:40,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:40:40" (1/1) ... [2022-10-17 17:40:40,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6273604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:40, skipping insertion in model container [2022-10-17 17:40:40,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:40:40" (1/1) ... [2022-10-17 17:40:40,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:40:40,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:40:40,449 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22317,22330] [2022-10-17 17:40:40,457 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22452,22465] [2022-10-17 17:40:40,459 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22612,22625] [2022-10-17 17:40:40,463 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22941,22954] [2022-10-17 17:40:40,464 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23005,23018] [2022-10-17 17:40:40,465 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23136,23149] [2022-10-17 17:40:40,466 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23200,23213] [2022-10-17 17:40:40,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:40:40,489 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:40:40,533 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22317,22330] [2022-10-17 17:40:40,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22452,22465] [2022-10-17 17:40:40,541 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22612,22625] [2022-10-17 17:40:40,545 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22941,22954] [2022-10-17 17:40:40,546 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23005,23018] [2022-10-17 17:40:40,547 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23136,23149] [2022-10-17 17:40:40,548 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23200,23213] [2022-10-17 17:40:40,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:40:40,590 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:40:40,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:40 WrapperNode [2022-10-17 17:40:40,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:40:40,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:40:40,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:40:40,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:40:40,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:40" (1/1) ... [2022-10-17 17:40:40,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:40" (1/1) ... [2022-10-17 17:40:40,644 INFO L138 Inliner]: procedures = 119, calls = 40, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 196 [2022-10-17 17:40:40,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:40:40,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:40:40,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:40:40,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:40:40,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:40" (1/1) ... [2022-10-17 17:40:40,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:40" (1/1) ... [2022-10-17 17:40:40,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:40" (1/1) ... [2022-10-17 17:40:40,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:40" (1/1) ... [2022-10-17 17:40:40,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:40" (1/1) ... [2022-10-17 17:40:40,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:40" (1/1) ... [2022-10-17 17:40:40,706 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:40" (1/1) ... [2022-10-17 17:40:40,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:40" (1/1) ... [2022-10-17 17:40:40,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:40:40,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:40:40,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:40:40,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:40:40,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:40" (1/1) ... [2022-10-17 17:40:40,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:40:40,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:40,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:40:40,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:40:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:40:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:40:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:40:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:40:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:40:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:40:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:40:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:40:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:40:40,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:40:40,889 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:40:40,891 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:40:41,189 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:40:41,330 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:40:41,343 INFO L300 CfgBuilder]: Removed 20 assume(true) statements. [2022-10-17 17:40:41,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:40:41 BoogieIcfgContainer [2022-10-17 17:40:41,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:40:41,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:40:41,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:40:41,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:40:41,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:40:40" (1/3) ... [2022-10-17 17:40:41,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ac1227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:40:41, skipping insertion in model container [2022-10-17 17:40:41,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:40" (2/3) ... [2022-10-17 17:40:41,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ac1227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:40:41, skipping insertion in model container [2022-10-17 17:40:41,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:40:41" (3/3) ... [2022-10-17 17:40:41,372 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-sorted-2.i [2022-10-17 17:40:41,388 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:40:41,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-10-17 17:40:41,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:40:41,459 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;@260b7f30, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:40:41,459 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-10-17 17:40:41,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 42 states have (on average 1.9047619047619047) internal successors, (80), 49 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:41,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 17:40:41,477 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:41,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 17:40:41,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 17:40:41,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:41,520 INFO L85 PathProgramCache]: Analyzing trace with hash 264006048, now seen corresponding path program 1 times [2022-10-17 17:40:41,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:41,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294333099] [2022-10-17 17:40:41,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:41,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:41,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:41,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294333099] [2022-10-17 17:40:41,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294333099] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:41,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:41,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:40:41,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69371022] [2022-10-17 17:40:41,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:41,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:40:41,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:41,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:40:41,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:40:41,749 INFO L87 Difference]: Start difference. First operand has 50 states, 42 states have (on average 1.9047619047619047) internal successors, (80), 49 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:41,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:41,841 INFO L93 Difference]: Finished difference Result 97 states and 155 transitions. [2022-10-17 17:40:41,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:40:41,843 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-17 17:40:41,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:41,853 INFO L225 Difference]: With dead ends: 97 [2022-10-17 17:40:41,853 INFO L226 Difference]: Without dead ends: 48 [2022-10-17 17:40:41,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:40:41,860 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:41,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:41,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-10-17 17:40:41,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-10-17 17:40:41,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 47 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) [2022-10-17 17:40:41,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2022-10-17 17:40:41,900 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 5 [2022-10-17 17:40:41,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:41,901 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2022-10-17 17:40:41,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:41,902 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2022-10-17 17:40:41,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:40:41,903 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:41,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:40:41,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:40:41,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 17:40:41,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:41,905 INFO L85 PathProgramCache]: Analyzing trace with hash -423836003, now seen corresponding path program 1 times [2022-10-17 17:40:41,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:41,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990944413] [2022-10-17 17:40:41,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:41,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:41,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:41,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990944413] [2022-10-17 17:40:41,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990944413] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:41,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:41,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:40:41,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570183463] [2022-10-17 17:40:41,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:41,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:40:42,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:42,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:40:42,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:40:42,004 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:42,057 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2022-10-17 17:40:42,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:40:42,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-17 17:40:42,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:42,059 INFO L225 Difference]: With dead ends: 96 [2022-10-17 17:40:42,060 INFO L226 Difference]: Without dead ends: 51 [2022-10-17 17:40:42,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:40:42,062 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 21 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:42,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 66 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:40:42,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-10-17 17:40:42,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-10-17 17:40:42,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.255813953488372) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:42,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-10-17 17:40:42,073 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 6 [2022-10-17 17:40:42,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:42,073 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-10-17 17:40:42,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:42,074 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-10-17 17:40:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:40:42,074 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:42,074 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:42,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:40:42,075 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 17:40:42,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:42,076 INFO L85 PathProgramCache]: Analyzing trace with hash -508233960, now seen corresponding path program 1 times [2022-10-17 17:40:42,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:42,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156200642] [2022-10-17 17:40:42,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:42,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:40:42,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:42,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156200642] [2022-10-17 17:40:42,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156200642] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:42,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:42,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:40:42,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709273206] [2022-10-17 17:40:42,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:42,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:40:42,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:42,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:40:42,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:40:42,306 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 4 states, 4 states have (on average 1.75) 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) [2022-10-17 17:40:42,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:42,401 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2022-10-17 17:40:42,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:40:42,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) 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 8 [2022-10-17 17:40:42,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:42,403 INFO L225 Difference]: With dead ends: 84 [2022-10-17 17:40:42,403 INFO L226 Difference]: Without dead ends: 82 [2022-10-17 17:40:42,404 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 [2022-10-17 17:40:42,406 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 114 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:42,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 61 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:42,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-10-17 17:40:42,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 48. [2022-10-17 17:40:42,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 47 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) [2022-10-17 17:40:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2022-10-17 17:40:42,417 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 8 [2022-10-17 17:40:42,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:42,418 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2022-10-17 17:40:42,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) 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) [2022-10-17 17:40:42,418 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2022-10-17 17:40:42,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 17:40:42,419 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:42,419 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:42,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:40:42,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 17:40:42,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:42,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1412257978, now seen corresponding path program 1 times [2022-10-17 17:40:42,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:42,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794251636] [2022-10-17 17:40:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:42,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:43,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:43,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:43,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794251636] [2022-10-17 17:40:43,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794251636] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:40:43,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342884010] [2022-10-17 17:40:43,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:43,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:43,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:43,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:40:43,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:40:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:43,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-17 17:40:43,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:40:43,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:40:43,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-17 17:40:43,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:43,730 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 78 [2022-10-17 17:40:43,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:43,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 57 [2022-10-17 17:40:43,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:43,785 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 45 [2022-10-17 17:40:43,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:43,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 64 [2022-10-17 17:40:43,835 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-17 17:40:43,836 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-17 17:40:43,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2022-10-17 17:40:44,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:40:44,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:44,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:40:44,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:44,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342884010] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:40:44,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [29948080] [2022-10-17 17:40:44,273 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-10-17 17:40:44,274 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:40:44,282 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:40:44,287 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:40:44,288 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:40:44,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:44,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-10-17 17:40:44,394 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-10-17 17:40:44,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-10-17 17:40:44,439 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-10-17 17:40:44,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-10-17 17:40:44,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:44,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-10-17 17:40:44,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:44,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:44,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2022-10-17 17:40:44,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:44,581 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-10-17 17:40:44,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 196 treesize of output 151 [2022-10-17 17:40:44,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:44,624 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 17:40:44,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 126 treesize of output 85 [2022-10-17 17:40:44,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:44,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:44,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:44,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:44,775 INFO L356 Elim1Store]: treesize reduction 91, result has 38.1 percent of original size [2022-10-17 17:40:44,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 162 [2022-10-17 17:40:44,935 INFO L356 Elim1Store]: treesize reduction 24, result has 52.0 percent of original size [2022-10-17 17:40:44,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 89 treesize of output 81 [2022-10-17 17:40:44,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:44,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:44,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 26 treesize of output 18 [2022-10-17 17:40:45,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:45,007 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 17:40:45,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:45,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:45,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:45,034 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 41 [2022-10-17 17:40:45,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:45,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 17 [2022-10-17 17:40:45,080 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:40:45,321 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-10-17 17:40:45,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-10-17 17:40:45,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-10-17 17:40:45,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:45,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:45,545 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-10-17 17:40:45,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 188 treesize of output 148 [2022-10-17 17:40:45,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:45,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:45,599 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 17:40:45,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 118 treesize of output 82 [2022-10-17 17:40:45,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:45,636 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:45,660 INFO L356 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-10-17 17:40:45,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 106 [2022-10-17 17:40:45,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:45,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:45,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-10-17 17:40:45,834 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:40:45,849 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-10-17 17:40:45,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:45,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 17:40:45,893 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:40:45,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-10-17 17:40:45,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2022-10-17 17:40:46,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:46,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:46,213 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-10-17 17:40:46,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 188 treesize of output 148 [2022-10-17 17:40:46,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:46,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:46,254 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 17:40:46,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 118 treesize of output 82 [2022-10-17 17:40:46,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:46,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:46,315 INFO L356 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-10-17 17:40:46,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 106 [2022-10-17 17:40:46,447 INFO L356 Elim1Store]: treesize reduction 28, result has 47.2 percent of original size [2022-10-17 17:40:46,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 98 treesize of output 131 [2022-10-17 17:40:46,522 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:40:46,539 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:40:46,547 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:40:46,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:46,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:46,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-10-17 17:40:46,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:46,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:46,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-10-17 17:40:46,602 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:40:46,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:46,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 17:40:46,670 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:40:46,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-10-17 17:40:46,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2022-10-17 17:40:46,857 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:40:47,628 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '690#(and (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) 4)) 0) (or (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) 0))) (= |ULTIMATE.start_main_~head~0#1.offset| |ULTIMATE.start_main_~x~0#1.offset|) (= |ULTIMATE.start_main_~marked~0#1| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ |ULTIMATE.start_main_~x~0#1.offset| 4)) 0)) (= |ULTIMATE.start_main_~x~0#1.base| |ULTIMATE.start_main_~head~0#1.base|) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= |#NULL.offset| 0) (not (= |ULTIMATE.start_main_~x~0#1.base| 0)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:40:47,629 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:40:47,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:40:47,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 14 [2022-10-17 17:40:47,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589308870] [2022-10-17 17:40:47,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:40:47,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-17 17:40:47,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:47,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-17 17:40:47,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2022-10-17 17:40:47,632 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2022-10-17 17:40:48,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:48,540 INFO L93 Difference]: Finished difference Result 154 states and 167 transitions. [2022-10-17 17:40:48,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 17:40:48,541 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-17 17:40:48,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:48,542 INFO L225 Difference]: With dead ends: 154 [2022-10-17 17:40:48,542 INFO L226 Difference]: Without dead ends: 115 [2022-10-17 17:40:48,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2022-10-17 17:40:48,544 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 162 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:48,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 372 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 224 Invalid, 0 Unknown, 27 Unchecked, 0.3s Time] [2022-10-17 17:40:48,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-10-17 17:40:48,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 56. [2022-10-17 17:40:48,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.22) internal successors, (61), 55 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:48,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2022-10-17 17:40:48,558 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 14 [2022-10-17 17:40:48,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:48,558 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2022-10-17 17:40:48,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 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) [2022-10-17 17:40:48,559 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2022-10-17 17:40:48,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 17:40:48,560 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:48,560 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:48,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:40:48,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:48,778 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 17:40:48,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:48,778 INFO L85 PathProgramCache]: Analyzing trace with hash 89421662, now seen corresponding path program 1 times [2022-10-17 17:40:48,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:48,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409604385] [2022-10-17 17:40:48,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:48,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:49,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:49,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409604385] [2022-10-17 17:40:49,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409604385] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:40:49,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452398928] [2022-10-17 17:40:49,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:49,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:49,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:49,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:40:49,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:40:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:49,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 46 conjunts are in the unsatisfiable core [2022-10-17 17:40:49,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:40:49,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:40:49,573 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-17 17:40:49,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-17 17:40:49,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-10-17 17:40:49,587 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 14 [2022-10-17 17:40:49,599 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-10-17 17:40:49,599 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 51 [2022-10-17 17:40:49,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-10-17 17:40:49,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 18 treesize of output 20 [2022-10-17 17:40:49,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-10-17 17:40:49,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 14 [2022-10-17 17:40:49,639 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-10-17 17:40:49,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 44 [2022-10-17 17:40:49,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 18 treesize of output 20 [2022-10-17 17:40:49,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-10-17 17:40:49,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2022-10-17 17:40:49,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:40:49,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:40:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:49,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:40:50,082 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:40:50,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 48 [2022-10-17 17:40:50,095 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:40:50,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 96 [2022-10-17 17:40:50,102 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:40:50,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 68 [2022-10-17 17:40:50,115 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:40:50,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 121 [2022-10-17 17:40:50,158 INFO L356 Elim1Store]: treesize reduction 30, result has 57.7 percent of original size [2022-10-17 17:40:50,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 162 treesize of output 170 [2022-10-17 17:40:50,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 63 treesize of output 55 [2022-10-17 17:40:50,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 98 treesize of output 90 [2022-10-17 17:40:50,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:50,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452398928] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:40:50,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [795914271] [2022-10-17 17:40:50,484 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-10-17 17:40:50,484 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:40:50,485 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:40:50,485 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:40:50,485 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:40:50,531 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-10-17 17:40:50,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-10-17 17:40:50,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-10-17 17:40:50,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:50,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:50,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2022-10-17 17:40:50,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:50,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-10-17 17:40:50,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:50,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-10-17 17:40:50,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:50,645 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-10-17 17:40:50,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 196 treesize of output 151 [2022-10-17 17:40:50,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:50,685 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 17:40:50,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 126 treesize of output 85 [2022-10-17 17:40:50,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:50,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:50,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:50,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:50,781 INFO L356 Elim1Store]: treesize reduction 91, result has 38.1 percent of original size [2022-10-17 17:40:50,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 162 [2022-10-17 17:40:50,860 INFO L356 Elim1Store]: treesize reduction 24, result has 52.0 percent of original size [2022-10-17 17:40:50,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 89 treesize of output 81 [2022-10-17 17:40:50,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:50,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:50,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 26 treesize of output 18 [2022-10-17 17:40:50,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:50,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 17:40:50,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:50,921 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 17 [2022-10-17 17:40:50,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:50,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:50,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:50,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 48 [2022-10-17 17:40:50,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:50,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:50,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 41 [2022-10-17 17:40:51,243 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-10-17 17:40:51,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-10-17 17:40:51,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-10-17 17:40:51,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2022-10-17 17:40:51,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-10-17 17:40:51,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:51,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:51,427 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 17:40:51,427 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 188 treesize of output 152 [2022-10-17 17:40:51,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:51,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:51,463 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-10-17 17:40:51,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 118 treesize of output 78 [2022-10-17 17:40:51,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:51,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:51,520 INFO L356 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-10-17 17:40:51,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 106 [2022-10-17 17:40:51,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-10-17 17:40:51,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:51,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 17:40:51,639 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:40:51,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:51,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:51,672 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-10-17 17:40:51,687 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:40:51,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:51,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:51,999 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-10-17 17:40:51,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 188 treesize of output 148 [2022-10-17 17:40:52,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:52,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:52,036 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 17:40:52,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 118 treesize of output 82 [2022-10-17 17:40:52,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:52,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:52,085 INFO L356 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-10-17 17:40:52,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 106 [2022-10-17 17:40:52,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:52,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:52,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:52,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-10-17 17:40:52,196 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:40:52,236 INFO L356 Elim1Store]: treesize reduction 28, result has 47.2 percent of original size [2022-10-17 17:40:52,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 114 treesize of output 137 [2022-10-17 17:40:52,261 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-10-17 17:40:52,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 11 [2022-10-17 17:40:52,271 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:40:52,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:52,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 17:40:52,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:52,343 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:52,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-10-17 17:40:52,354 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:40:52,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-10-17 17:40:52,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2022-10-17 17:40:52,526 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:40:53,532 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1094#(and (not (= |ULTIMATE.start_main_~head~0#1.base| 0)) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ |ULTIMATE.start_main_~x~0#1.offset| 4)) 1)) (not (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 4)) 0)) (= |ULTIMATE.start_main_~marked~0#1| 0) (or (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 0))) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) |ULTIMATE.start_main_~x~0#1.offset|) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:40:53,532 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:40:53,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:40:53,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-10-17 17:40:53,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593821192] [2022-10-17 17:40:53,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:40:53,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-17 17:40:53,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:53,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-17 17:40:53,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2022-10-17 17:40:53,535 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 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) [2022-10-17 17:40:54,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:54,157 INFO L93 Difference]: Finished difference Result 145 states and 156 transitions. [2022-10-17 17:40:54,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 17:40:54,158 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-10-17 17:40:54,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:54,165 INFO L225 Difference]: With dead ends: 145 [2022-10-17 17:40:54,165 INFO L226 Difference]: Without dead ends: 143 [2022-10-17 17:40:54,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=158, Invalid=964, Unknown=0, NotChecked=0, Total=1122 [2022-10-17 17:40:54,168 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 378 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:54,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 555 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 336 Invalid, 0 Unknown, 53 Unchecked, 0.5s Time] [2022-10-17 17:40:54,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-10-17 17:40:54,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 60. [2022-10-17 17:40:54,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 59 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:54,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2022-10-17 17:40:54,199 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 16 [2022-10-17 17:40:54,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:54,199 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2022-10-17 17:40:54,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 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) [2022-10-17 17:40:54,200 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2022-10-17 17:40:54,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 17:40:54,201 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:54,201 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:54,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:40:54,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:54,410 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 17:40:54,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:54,410 INFO L85 PathProgramCache]: Analyzing trace with hash -388571595, now seen corresponding path program 2 times [2022-10-17 17:40:54,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:54,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482954205] [2022-10-17 17:40:54,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:54,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:55,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:55,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482954205] [2022-10-17 17:40:55,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482954205] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:40:55,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639101324] [2022-10-17 17:40:55,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 17:40:55,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:55,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:55,778 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:40:55,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 17:40:55,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-17 17:40:55,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:40:55,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 36 conjunts are in the unsatisfiable core [2022-10-17 17:40:55,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:40:55,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-17 17:40:55,917 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:40:55,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:55,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 78 [2022-10-17 17:40:55,998 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 17:40:55,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 61 [2022-10-17 17:40:56,014 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 17:40:56,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 49 [2022-10-17 17:40:56,032 INFO L356 Elim1Store]: treesize reduction 30, result has 23.1 percent of original size [2022-10-17 17:40:56,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 63 [2022-10-17 17:40:56,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2022-10-17 17:40:56,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2022-10-17 17:40:56,102 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-17 17:40:56,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-10-17 17:40:56,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:56,201 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-10-17 17:40:56,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 121 [2022-10-17 17:40:56,223 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 17:40:56,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 55 [2022-10-17 17:40:56,243 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-17 17:40:56,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2022-10-17 17:40:56,262 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-17 17:40:56,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-17 17:40:56,350 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-10-17 17:40:56,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 22 [2022-10-17 17:40:56,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:40:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:56,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:40:56,674 INFO L356 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-10-17 17:40:56,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 86 [2022-10-17 17:40:56,703 INFO L356 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-10-17 17:40:56,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 74 [2022-10-17 17:40:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:56,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639101324] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:40:56,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [904081922] [2022-10-17 17:40:56,849 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-10-17 17:40:56,849 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:40:56,850 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:40:56,850 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:40:56,850 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:40:56,906 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-10-17 17:40:56,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-10-17 17:40:56,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-10-17 17:40:56,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:56,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-10-17 17:40:56,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:56,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:56,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2022-10-17 17:40:56,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:56,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-10-17 17:40:57,030 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-10-17 17:40:57,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-10-17 17:40:57,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:57,061 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 151 [2022-10-17 17:40:57,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:57,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 81 [2022-10-17 17:40:57,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:57,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:57,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 153 [2022-10-17 17:40:57,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:57,196 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 67 [2022-10-17 17:40:57,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:57,204 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 17 [2022-10-17 17:40:57,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:57,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 17:40:57,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-10-17 17:40:57,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2022-10-17 17:40:57,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-10-17 17:40:57,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:57,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:57,365 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-10-17 17:40:57,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 188 treesize of output 148 [2022-10-17 17:40:57,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:57,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:57,409 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 17:40:57,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 118 treesize of output 82 [2022-10-17 17:40:57,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:57,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:57,479 INFO L356 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-10-17 17:40:57,479 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 106 [2022-10-17 17:40:57,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-10-17 17:40:57,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:57,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 17:40:57,624 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:40:57,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:57,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:57,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:57,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-10-17 17:40:57,687 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:40:57,868 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-10-17 17:40:57,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:57,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:57,923 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 17:40:57,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 188 treesize of output 152 [2022-10-17 17:40:57,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:57,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:57,973 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-10-17 17:40:57,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 118 treesize of output 78 [2022-10-17 17:40:58,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:58,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 17:40:58,046 INFO L356 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-10-17 17:40:58,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 106 [2022-10-17 17:40:58,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:58,177 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 17:40:58,265 INFO L356 Elim1Store]: treesize reduction 28, result has 47.2 percent of original size [2022-10-17 17:40:58,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 110 treesize of output 135 [2022-10-17 17:40:58,279 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:40:58,302 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-10-17 17:40:58,303 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 11 [2022-10-17 17:40:58,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:40:58,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 17:40:58,346 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 17:40:58,520 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 5 [2022-10-17 17:40:58,555 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:40:59,182 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1488#(and (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) 4)) 0) (or (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~x~0#1.base|) |ULTIMATE.start_main_~x~0#1.offset|) 0))) (= |ULTIMATE.start_main_~head~0#1.offset| |ULTIMATE.start_main_~x~0#1.offset|) (= |ULTIMATE.start_main_~marked~0#1| 0) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ |ULTIMATE.start_main_~x~0#1.offset| 4)) 0)) (= |ULTIMATE.start_main_~x~0#1.base| |ULTIMATE.start_main_~head~0#1.base|) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= |#NULL.offset| 0) (not (= |ULTIMATE.start_main_~x~0#1.base| 0)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:40:59,182 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:40:59,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:40:59,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2022-10-17 17:40:59,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380513757] [2022-10-17 17:40:59,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:40:59,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-17 17:40:59,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:59,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-17 17:40:59,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=684, Unknown=1, NotChecked=0, Total=812 [2022-10-17 17:40:59,185 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 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) [2022-10-17 17:40:59,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:59,625 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2022-10-17 17:40:59,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 17:40:59,625 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-10-17 17:40:59,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:59,626 INFO L225 Difference]: With dead ends: 75 [2022-10-17 17:40:59,626 INFO L226 Difference]: Without dead ends: 73 [2022-10-17 17:40:59,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=200, Invalid=921, Unknown=1, NotChecked=0, Total=1122 [2022-10-17 17:40:59,628 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 140 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:59,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 246 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 157 Invalid, 0 Unknown, 32 Unchecked, 0.2s Time] [2022-10-17 17:40:59,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-10-17 17:40:59,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2022-10-17 17:40:59,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 63 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:59,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2022-10-17 17:40:59,643 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 16 [2022-10-17 17:40:59,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:59,643 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2022-10-17 17:40:59,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 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) [2022-10-17 17:40:59,644 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2022-10-17 17:40:59,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 17:40:59,645 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:59,645 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:59,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-17 17:40:59,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:59,860 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-10-17 17:40:59,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:59,860 INFO L85 PathProgramCache]: Analyzing trace with hash 364022297, now seen corresponding path program 2 times [2022-10-17 17:40:59,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:59,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521206147] [2022-10-17 17:40:59,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:59,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:01,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:01,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:01,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521206147] [2022-10-17 17:41:01,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521206147] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:41:01,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149155156] [2022-10-17 17:41:01,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 17:41:01,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:01,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:01,124 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:41:01,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353a9576-c7bd-465c-840d-847bd986a35f/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 17:41:01,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-17 17:41:01,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:41:01,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 67 conjunts are in the unsatisfiable core [2022-10-17 17:41:01,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:41:01,264 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:41:01,318 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-10-17 17:41:01,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-10-17 17:41:01,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-17 17:41:01,336 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 14 [2022-10-17 17:41:01,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 14 treesize of output 16 [2022-10-17 17:41:01,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-10-17 17:41:01,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 14 treesize of output 16 [2022-10-17 17:41:01,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 14 [2022-10-17 17:41:01,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 14 treesize of output 16 [2022-10-17 17:41:01,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-17 17:41:01,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-10-17 17:41:01,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 14 treesize of output 16 [2022-10-17 17:41:01,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 129 [2022-10-17 17:41:01,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 108 [2022-10-17 17:41:01,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 92 [2022-10-17 17:41:01,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 104 [2022-10-17 17:41:01,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:41:01,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 90 [2022-10-17 17:41:01,562 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-10-17 17:41:01,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-10-17 17:41:01,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2022-10-17 17:41:02,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 26 [2022-10-17 17:41:02,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-10-17 17:41:02,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 17:41:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:02,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:41:03,144 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:41:03,145 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 87 [2022-10-17 17:41:03,152 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:41:03,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 71 [2022-10-17 17:41:03,211 INFO L356 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-10-17 17:41:03,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 354 treesize of output 311 [2022-10-17 17:41:03,295 INFO L356 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2022-10-17 17:41:03,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 86 [2022-10-17 17:41:03,331 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:41:03,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 68 [2022-10-17 17:41:03,468 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 4 [2022-10-17 17:41:03,513 INFO L356 Elim1Store]: treesize reduction 6, result has 76.0 percent of original size [2022-10-17 17:41:03,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 406 treesize of output 422 [2022-10-17 17:41:03,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2022-10-17 17:41:03,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2022-10-17 17:41:03,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2022-10-17 17:41:03,948 INFO L356 Elim1Store]: treesize reduction 420, result has 52.2 percent of original size [2022-10-17 17:41:03,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 1470 treesize of output 1713 [2022-10-17 17:41:03,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1238 treesize of output 1192 [2022-10-17 17:41:04,025 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:41:04,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1192 treesize of output 1195 [2022-10-17 17:41:04,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1167 treesize of output 983 [2022-10-17 17:41:04,104 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:41:04,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 983 treesize of output 917 [2022-10-17 17:41:04,302 INFO L356 Elim1Store]: treesize reduction 216, result has 45.2 percent of original size [2022-10-17 17:41:04,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 1147 treesize of output 1265 [2022-10-17 17:41:04,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 931 treesize of output 908 [2022-10-17 17:41:04,492 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 17:41:04,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1326 treesize of output 1500 [2022-10-17 17:41:04,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 992 treesize of output 946