./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-buckets-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-buckets-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6b726a83620fff2a21a6dbfdec50e244c1786dd86dd76b1719515a59b3627ac --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 20:18:53,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:18:53,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:18:53,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:18:53,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:18:53,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:18:53,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:18:53,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:18:53,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:18:53,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:18:53,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:18:53,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:18:53,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:18:53,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:18:53,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:18:53,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:18:53,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:18:53,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:18:53,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:18:53,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:18:53,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:18:53,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:18:53,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:18:53,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:18:53,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:18:53,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:18:53,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:18:53,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:18:53,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:18:53,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:18:53,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:18:53,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:18:53,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:18:53,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:18:53,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:18:53,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:18:53,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:18:53,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:18:53,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:18:53,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:18:53,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:18:53,558 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 20:18:53,600 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:18:53,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:18:53,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:18:53,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:18:53,602 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:18:53,602 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:18:53,602 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:18:53,603 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:18:53,603 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:18:53,603 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:18:53,604 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:18:53,605 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:18:53,605 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:18:53,605 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:18:53,605 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:18:53,606 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:18:53,606 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:18:53,606 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:18:53,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:18:53,607 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:18:53,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:18:53,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:18:53,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:18:53,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:18:53,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:18:53,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:18:53,610 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:18:53,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:18:53,611 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:18:53,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:18:53,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:18:53,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:18:53,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:18:53,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:18:53,613 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:18:53,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:18:53,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:18:53,614 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:18:53,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:18:53,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:18:53,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:18:53,615 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_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6b726a83620fff2a21a6dbfdec50e244c1786dd86dd76b1719515a59b3627ac [2022-11-16 20:18:53,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:18:53,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:18:53,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:18:53,932 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:18:53,933 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:18:53,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/forester-heap/sll-buckets-1.i [2022-11-16 20:18:54,026 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/data/19cd2936f/8505781e620d412a9ee57b8946af0ec4/FLAGa10e64afa [2022-11-16 20:18:54,674 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:18:54,675 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/sv-benchmarks/c/forester-heap/sll-buckets-1.i [2022-11-16 20:18:54,691 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/data/19cd2936f/8505781e620d412a9ee57b8946af0ec4/FLAGa10e64afa [2022-11-16 20:18:54,978 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/data/19cd2936f/8505781e620d412a9ee57b8946af0ec4 [2022-11-16 20:18:54,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:18:54,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:18:54,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:18:54,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:18:54,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:18:54,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:18:54" (1/1) ... [2022-11-16 20:18:54,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e040423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:18:54, skipping insertion in model container [2022-11-16 20:18:54,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:18:54" (1/1) ... [2022-11-16 20:18:55,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:18:55,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:18:55,387 WARN L229 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_d6acebf8-f93d-4894-8c01-92a85aa81da6/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22663,22676] [2022-11-16 20:18:55,391 WARN L229 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_d6acebf8-f93d-4894-8c01-92a85aa81da6/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22734,22747] [2022-11-16 20:18:55,392 WARN L229 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_d6acebf8-f93d-4894-8c01-92a85aa81da6/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22862,22875] [2022-11-16 20:18:55,396 WARN L229 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_d6acebf8-f93d-4894-8c01-92a85aa81da6/sv-benchmarks/c/forester-heap/sll-buckets-1.i[23275,23288] [2022-11-16 20:18:55,397 WARN L229 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_d6acebf8-f93d-4894-8c01-92a85aa81da6/sv-benchmarks/c/forester-heap/sll-buckets-1.i[23364,23377] [2022-11-16 20:18:55,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:18:55,409 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:18:55,450 WARN L229 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_d6acebf8-f93d-4894-8c01-92a85aa81da6/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22663,22676] [2022-11-16 20:18:55,451 WARN L229 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_d6acebf8-f93d-4894-8c01-92a85aa81da6/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22734,22747] [2022-11-16 20:18:55,453 WARN L229 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_d6acebf8-f93d-4894-8c01-92a85aa81da6/sv-benchmarks/c/forester-heap/sll-buckets-1.i[22862,22875] [2022-11-16 20:18:55,457 WARN L229 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_d6acebf8-f93d-4894-8c01-92a85aa81da6/sv-benchmarks/c/forester-heap/sll-buckets-1.i[23275,23288] [2022-11-16 20:18:55,458 WARN L229 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_d6acebf8-f93d-4894-8c01-92a85aa81da6/sv-benchmarks/c/forester-heap/sll-buckets-1.i[23364,23377] [2022-11-16 20:18:55,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:18:55,492 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:18:55,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:18:55 WrapperNode [2022-11-16 20:18:55,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:18:55,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:18:55,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:18:55,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:18:55,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:18:55" (1/1) ... [2022-11-16 20:18:55,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:18:55" (1/1) ... [2022-11-16 20:18:55,564 INFO L138 Inliner]: procedures = 119, calls = 42, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 155 [2022-11-16 20:18:55,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:18:55,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:18:55,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:18:55,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:18:55,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:18:55" (1/1) ... [2022-11-16 20:18:55,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:18:55" (1/1) ... [2022-11-16 20:18:55,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:18:55" (1/1) ... [2022-11-16 20:18:55,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:18:55" (1/1) ... [2022-11-16 20:18:55,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:18:55" (1/1) ... [2022-11-16 20:18:55,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:18:55" (1/1) ... [2022-11-16 20:18:55,598 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:18:55" (1/1) ... [2022-11-16 20:18:55,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:18:55" (1/1) ... [2022-11-16 20:18:55,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:18:55,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:18:55,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:18:55,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:18:55,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:18:55" (1/1) ... [2022-11-16 20:18:55,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:18:55,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:18:55,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:18:55,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:18:55,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 20:18:55,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 20:18:55,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 20:18:55,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:18:55,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 20:18:55,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 20:18:55,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 20:18:55,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:18:55,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:18:55,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:18:55,875 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:18:55,877 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:18:56,426 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:18:56,495 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:18:56,495 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-16 20:18:56,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:18:56 BoogieIcfgContainer [2022-11-16 20:18:56,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:18:56,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:18:56,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:18:56,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:18:56,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:18:54" (1/3) ... [2022-11-16 20:18:56,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1a7eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:18:56, skipping insertion in model container [2022-11-16 20:18:56,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:18:55" (2/3) ... [2022-11-16 20:18:56,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1a7eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:18:56, skipping insertion in model container [2022-11-16 20:18:56,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:18:56" (3/3) ... [2022-11-16 20:18:56,508 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-buckets-1.i [2022-11-16 20:18:56,530 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:18:56,530 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-16 20:18:56,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:18:56,593 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;@953ae32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:18:56,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-16 20:18:56,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 31 states have (on average 1.935483870967742) internal successors, (60), 36 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:18:56,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 20:18:56,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:18:56,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 20:18:56,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 20:18:56,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:18:56,613 INFO L85 PathProgramCache]: Analyzing trace with hash 196178540, now seen corresponding path program 1 times [2022-11-16 20:18:56,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:18:56,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862805820] [2022-11-16 20:18:56,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:18:56,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:18:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:18:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:18:57,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:18:57,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862805820] [2022-11-16 20:18:57,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862805820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:18:57,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:18:57,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:18:57,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217098358] [2022-11-16 20:18:57,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:18:57,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:18:57,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:18:57,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:18:57,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:18:57,269 INFO L87 Difference]: Start difference. First operand has 37 states, 31 states have (on average 1.935483870967742) internal successors, (60), 36 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:18:57,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:18:57,452 INFO L93 Difference]: Finished difference Result 96 states and 160 transitions. [2022-11-16 20:18:57,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 20:18:57,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 20:18:57,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:18:57,470 INFO L225 Difference]: With dead ends: 96 [2022-11-16 20:18:57,470 INFO L226 Difference]: Without dead ends: 59 [2022-11-16 20:18:57,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:18:57,481 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 83 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:18:57,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 56 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:18:57,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-16 20:18:57,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2022-11-16 20:18:57,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.303030303030303) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:18:57,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-11-16 20:18:57,531 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 5 [2022-11-16 20:18:57,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:18:57,531 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-11-16 20:18:57,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:18:57,532 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-11-16 20:18:57,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 20:18:57,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:18:57,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:18:57,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:18:57,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 20:18:57,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:18:57,535 INFO L85 PathProgramCache]: Analyzing trace with hash -450856688, now seen corresponding path program 1 times [2022-11-16 20:18:57,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:18:57,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908996690] [2022-11-16 20:18:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:18:57,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:18:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:18:57,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:18:57,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:18:57,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908996690] [2022-11-16 20:18:57,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908996690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:18:57,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:18:57,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:18:57,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007011179] [2022-11-16 20:18:57,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:18:57,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:18:57,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:18:57,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:18:57,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:18:57,689 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:18:57,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:18:57,789 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-11-16 20:18:57,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:18:57,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 20:18:57,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:18:57,791 INFO L225 Difference]: With dead ends: 41 [2022-11-16 20:18:57,791 INFO L226 Difference]: Without dead ends: 39 [2022-11-16 20:18:57,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:18:57,793 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 19 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:18:57,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 46 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:18:57,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-16 20:18:57,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2022-11-16 20:18:57,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:18:57,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-11-16 20:18:57,800 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 7 [2022-11-16 20:18:57,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:18:57,801 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-11-16 20:18:57,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:18:57,801 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-11-16 20:18:57,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 20:18:57,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:18:57,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:18:57,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:18:57,803 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 20:18:57,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:18:57,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1874340424, now seen corresponding path program 1 times [2022-11-16 20:18:57,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:18:57,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855445538] [2022-11-16 20:18:57,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:18:57,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:18:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:18:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:18:57,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:18:57,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855445538] [2022-11-16 20:18:57,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855445538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:18:57,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:18:57,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:18:57,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199903761] [2022-11-16 20:18:57,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:18:57,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:18:57,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:18:57,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:18:57,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:18:57,926 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:18:58,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:18:58,064 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-11-16 20:18:58,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:18:58,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 20:18:58,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:18:58,067 INFO L225 Difference]: With dead ends: 39 [2022-11-16 20:18:58,067 INFO L226 Difference]: Without dead ends: 37 [2022-11-16 20:18:58,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:18:58,068 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:18:58,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 54 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:18:58,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-16 20:18:58,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-11-16 20:18:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:18:58,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-16 20:18:58,075 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 8 [2022-11-16 20:18:58,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:18:58,076 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-16 20:18:58,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:18:58,076 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-16 20:18:58,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 20:18:58,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:18:58,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:18:58,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 20:18:58,079 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 20:18:58,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:18:58,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2023416261, now seen corresponding path program 1 times [2022-11-16 20:18:58,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:18:58,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059363676] [2022-11-16 20:18:58,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:18:58,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:18:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:18:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:18:59,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:18:59,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059363676] [2022-11-16 20:18:59,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059363676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:18:59,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:18:59,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:18:59,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127705356] [2022-11-16 20:18:59,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:18:59,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:18:59,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:18:59,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:18:59,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:18:59,107 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:18:59,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:18:59,292 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2022-11-16 20:18:59,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:18:59,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 20:18:59,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:18:59,294 INFO L225 Difference]: With dead ends: 52 [2022-11-16 20:18:59,294 INFO L226 Difference]: Without dead ends: 41 [2022-11-16 20:18:59,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 20:18:59,305 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 14 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:18:59,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 81 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:18:59,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-16 20:18:59,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2022-11-16 20:18:59,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:18:59,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2022-11-16 20:18:59,323 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 9 [2022-11-16 20:18:59,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:18:59,323 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2022-11-16 20:18:59,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:18:59,324 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2022-11-16 20:18:59,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 20:18:59,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:18:59,326 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:18:59,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 20:18:59,326 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 20:18:59,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:18:59,327 INFO L85 PathProgramCache]: Analyzing trace with hash 783479132, now seen corresponding path program 1 times [2022-11-16 20:18:59,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:18:59,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277662143] [2022-11-16 20:18:59,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:18:59,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:18:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:18:59,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:18:59,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:18:59,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277662143] [2022-11-16 20:18:59,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277662143] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:18:59,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749569730] [2022-11-16 20:18:59,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:18:59,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:18:59,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:18:59,917 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:18:59,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 20:19:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:19:00,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 20:19:00,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:19:00,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:00,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2022-11-16 20:19:00,329 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-11-16 20:19:00,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 64 [2022-11-16 20:19:00,382 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2022-11-16 20:19:00,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 46 [2022-11-16 20:19:00,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:00,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 96 [2022-11-16 20:19:00,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 104 [2022-11-16 20:19:00,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 61 [2022-11-16 20:19:00,652 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 20:19:00,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 20:19:00,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2022-11-16 20:19:00,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 20:19:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:00,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:19:00,908 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 20:19:00,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 91 [2022-11-16 20:19:00,927 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 20:19:00,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 121 [2022-11-16 20:19:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:01,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749569730] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:19:01,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1123309991] [2022-11-16 20:19:01,067 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-16 20:19:01,067 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:19:01,070 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:19:01,075 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:19:01,076 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:19:01,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:01,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:01,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:01,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:01,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:01,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:01,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:01,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:01,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:01,566 INFO L217 Elim1Store]: Index analysis took 331 ms [2022-11-16 20:19:01,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-16 20:19:01,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:01,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:01,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:01,968 INFO L217 Elim1Store]: Index analysis took 242 ms [2022-11-16 20:19:02,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 26 [2022-11-16 20:19:02,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:02,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:02,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:02,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:02,996 INFO L321 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2022-11-16 20:19:02,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 301 treesize of output 195 [2022-11-16 20:19:03,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:03,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:03,740 INFO L321 Elim1Store]: treesize reduction 82, result has 27.4 percent of original size [2022-11-16 20:19:03,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 282 treesize of output 217 [2022-11-16 20:19:03,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 59 [2022-11-16 20:19:03,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 67 [2022-11-16 20:19:03,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 53 [2022-11-16 20:19:03,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 57 [2022-11-16 20:19:03,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:03,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 47 [2022-11-16 20:19:04,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 56 [2022-11-16 20:19:04,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 59 [2022-11-16 20:19:04,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,213 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:04,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:04,333 INFO L321 Elim1Store]: treesize reduction 124, result has 19.0 percent of original size [2022-11-16 20:19:04,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 410 treesize of output 303 [2022-11-16 20:19:04,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 211 treesize of output 194 [2022-11-16 20:19:04,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 290 [2022-11-16 20:19:04,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,621 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-16 20:19:04,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 58 [2022-11-16 20:19:04,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:04,735 INFO L321 Elim1Store]: treesize reduction 54, result has 15.6 percent of original size [2022-11-16 20:19:04,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 73 [2022-11-16 20:19:05,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,220 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-16 20:19:05,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 179 [2022-11-16 20:19:05,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-11-16 20:19:05,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,308 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-16 20:19:05,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 137 treesize of output 129 [2022-11-16 20:19:05,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-11-16 20:19:05,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:05,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-11-16 20:19:06,413 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:19:08,911 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '637#(and (= |ULTIMATE.start_main_~itr~0#1.offset| 0) (= |ULTIMATE.start_main_~item~0#1.offset| 0) (= |ULTIMATE.start_main_~bucket~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~bcki~0#1.base|) (+ 8 |ULTIMATE.start_main_~bcki~0#1.offset|)) (select (select |#memory_int| |ULTIMATE.start_main_~item~0#1.base|) (+ 4 |ULTIMATE.start_main_~item~0#1.offset|))) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~itr~0#1.base| 0) (= |ULTIMATE.start_main_~bcki~0#1.base| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~bcki~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-16 20:19:08,911 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:19:08,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:19:08,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-16 20:19:08,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632191096] [2022-11-16 20:19:08,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:19:08,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 20:19:08,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:19:08,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 20:19:08,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-16 20:19:08,913 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:19:09,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:19:09,155 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2022-11-16 20:19:09,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 20:19:09,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 20:19:09,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:19:09,157 INFO L225 Difference]: With dead ends: 82 [2022-11-16 20:19:09,157 INFO L226 Difference]: Without dead ends: 80 [2022-11-16 20:19:09,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-16 20:19:09,158 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 71 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:19:09,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 74 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 33 Unchecked, 0.2s Time] [2022-11-16 20:19:09,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-16 20:19:09,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 44. [2022-11-16 20:19:09,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 43 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:19:09,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2022-11-16 20:19:09,167 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 13 [2022-11-16 20:19:09,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:19:09,168 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2022-11-16 20:19:09,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:19:09,168 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2022-11-16 20:19:09,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 20:19:09,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:19:09,168 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:19:09,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 20:19:09,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:19:09,391 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 20:19:09,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:19:09,392 INFO L85 PathProgramCache]: Analyzing trace with hash -770353938, now seen corresponding path program 1 times [2022-11-16 20:19:09,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:19:09,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726639459] [2022-11-16 20:19:09,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:19:09,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:19:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:19:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:10,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:19:10,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726639459] [2022-11-16 20:19:10,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726639459] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:19:10,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824350826] [2022-11-16 20:19:10,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:19:10,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:19:10,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:19:10,392 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:19:10,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6acebf8-f93d-4894-8c01-92a85aa81da6/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 20:19:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:19:10,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-16 20:19:10,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:19:10,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:10,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2022-11-16 20:19:10,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:10,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 36 [2022-11-16 20:19:10,640 INFO L321 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2022-11-16 20:19:10,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 67 [2022-11-16 20:19:10,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:10,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:10,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:10,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-16 20:19:10,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2022-11-16 20:19:10,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2022-11-16 20:19:10,690 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-16 20:19:10,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 56 [2022-11-16 20:19:10,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:10,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:10,833 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 20:19:10,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 75 treesize of output 59 [2022-11-16 20:19:10,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:10,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:10,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 48 [2022-11-16 20:19:10,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:10,992 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-16 20:19:10,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 96 treesize of output 52 [2022-11-16 20:19:11,006 INFO L321 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-11-16 20:19:11,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 21 [2022-11-16 20:19:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:11,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:19:11,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:19:11,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824350826] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:19:11,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1051118815] [2022-11-16 20:19:11,270 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-16 20:19:11,270 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:19:11,270 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:19:11,270 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:19:11,270 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:19:11,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:11,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:11,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:11,663 INFO L217 Elim1Store]: Index analysis took 232 ms [2022-11-16 20:19:12,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 26 [2022-11-16 20:19:12,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:12,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,377 INFO L321 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2022-11-16 20:19:12,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 308 treesize of output 202 [2022-11-16 20:19:12,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:12,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:12,764 INFO L321 Elim1Store]: treesize reduction 82, result has 27.4 percent of original size [2022-11-16 20:19:12,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 289 treesize of output 224 [2022-11-16 20:19:12,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,876 INFO L321 Elim1Store]: treesize reduction 146, result has 22.8 percent of original size [2022-11-16 20:19:12,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 51 treesize of output 85 [2022-11-16 20:19:12,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 18 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 59 [2022-11-16 20:19:12,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:12,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 67 [2022-11-16 20:19:13,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 57 [2022-11-16 20:19:13,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 47 [2022-11-16 20:19:13,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 14 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 56 [2022-11-16 20:19:13,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 59 [2022-11-16 20:19:13,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 36 [2022-11-16 20:19:13,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:13,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:13,326 INFO L321 Elim1Store]: treesize reduction 196, result has 10.1 percent of original size [2022-11-16 20:19:13,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 319 treesize of output 190 [2022-11-16 20:19:13,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-11-16 20:19:13,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:13,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:13,453 INFO L321 Elim1Store]: treesize reduction 344, result has 10.9 percent of original size [2022-11-16 20:19:13,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 182 treesize of output 147 [2022-11-16 20:19:13,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-11-16 20:19:13,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2022-11-16 20:19:13,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:13,715 INFO L321 Elim1Store]: treesize reduction 124, result has 12.7 percent of original size [2022-11-16 20:19:13,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 278 treesize of output 164 [2022-11-16 20:19:13,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:13,757 INFO L321 Elim1Store]: treesize reduction 37, result has 7.5 percent of original size [2022-11-16 20:19:13,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 92 [2022-11-16 20:19:13,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 20:19:13,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-16 20:19:14,000 INFO L321 Elim1Store]: treesize reduction 18, result has 64.0 percent of original size [2022-11-16 20:19:14,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 47 [2022-11-16 20:19:14,050 INFO L321 Elim1Store]: treesize reduction 18, result has 64.0 percent of original size [2022-11-16 20:19:14,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 47 [2022-11-16 20:19:14,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 20:19:14,446 INFO L321 Elim1Store]: treesize reduction 18, result has 64.0 percent of original size [2022-11-16 20:19:14,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 47 [2022-11-16 20:19:14,492 INFO L321 Elim1Store]: treesize reduction 18, result has 64.0 percent of original size [2022-11-16 20:19:14,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 47 [2022-11-16 20:19:14,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-16 20:19:14,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 20:19:14,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:14,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:14,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:15,383 INFO L321 Elim1Store]: treesize reduction 330, result has 38.2 percent of original size [2022-11-16 20:19:15,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 34 case distinctions, treesize of input 487 treesize of output 522 [2022-11-16 20:19:15,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:15,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:15,798 INFO L321 Elim1Store]: treesize reduction 130, result has 57.0 percent of original size [2022-11-16 20:19:15,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 310 treesize of output 434 [2022-11-16 20:19:15,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 20:19:15,844 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:15,848 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 20:19:16,298 INFO L321 Elim1Store]: treesize reduction 330, result has 38.2 percent of original size [2022-11-16 20:19:16,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 33 case distinctions, treesize of input 464 treesize of output 577 [2022-11-16 20:28:52,023 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 908 DAG size of output: 908 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)