./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh --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 a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 --- 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-2329fc7 [2022-12-14 09:06:31,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:06:31,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:06:31,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:06:31,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:06:31,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:06:31,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:06:31,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:06:31,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:06:31,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:06:31,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:06:31,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:06:31,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:06:31,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:06:31,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:06:31,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:06:31,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:06:31,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:06:31,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:06:31,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:06:31,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:06:31,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:06:31,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:06:31,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:06:31,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:06:31,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:06:31,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:06:31,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:06:31,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:06:31,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:06:31,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:06:31,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:06:31,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:06:31,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:06:31,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:06:31,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:06:31,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:06:31,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:06:31,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:06:31,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:06:31,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:06:31,715 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 09:06:31,735 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:06:31,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:06:31,741 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:06:31,741 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:06:31,742 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:06:31,742 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:06:31,742 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:06:31,743 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:06:31,743 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:06:31,743 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:06:31,743 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:06:31,744 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:06:31,744 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:06:31,744 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:06:31,744 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:06:31,744 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:06:31,745 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:06:31,745 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:06:31,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:06:31,746 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:06:31,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:06:31,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:06:31,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:06:31,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:06:31,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:06:31,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:06:31,747 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:06:31,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:06:31,748 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:06:31,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:06:31,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:06:31,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:06:31,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:06:31,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:06:31,749 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:06:31,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:06:31,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:06:31,749 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:06:31,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:06:31,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:06:31,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:06:31,750 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_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a38de44f112a10364737c35b840e673503a211a020b9f494a50e4a32c8fe31c0 [2022-12-14 09:06:31,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:06:31,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:06:31,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:06:31,961 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:06:31,962 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:06:31,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2022-12-14 09:06:34,465 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:06:34,700 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:06:34,701 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i [2022-12-14 09:06:34,713 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/data/91eebf312/fd82d1e066ba45fe9b685f41b6a302b0/FLAG0b20e4fd2 [2022-12-14 09:06:35,069 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/data/91eebf312/fd82d1e066ba45fe9b685f41b6a302b0 [2022-12-14 09:06:35,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:06:35,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:06:35,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:06:35,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:06:35,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:06:35,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:06:35" (1/1) ... [2022-12-14 09:06:35,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43010cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:06:35, skipping insertion in model container [2022-12-14 09:06:35,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:06:35" (1/1) ... [2022-12-14 09:06:35,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:06:35,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:06:35,392 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i[33822,33835] [2022-12-14 09:06:35,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:06:35,434 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:06:35,467 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-1.i[33822,33835] [2022-12-14 09:06:35,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:06:35,517 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:06:35,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:06:35 WrapperNode [2022-12-14 09:06:35,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:06:35,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:06:35,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:06:35,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:06:35,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:06:35" (1/1) ... [2022-12-14 09:06:35,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:06:35" (1/1) ... [2022-12-14 09:06:35,564 INFO L138 Inliner]: procedures = 232, calls = 75, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 116 [2022-12-14 09:06:35,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:06:35,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:06:35,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:06:35,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:06:35,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:06:35" (1/1) ... [2022-12-14 09:06:35,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:06:35" (1/1) ... [2022-12-14 09:06:35,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:06:35" (1/1) ... [2022-12-14 09:06:35,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:06:35" (1/1) ... [2022-12-14 09:06:35,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:06:35" (1/1) ... [2022-12-14 09:06:35,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:06:35" (1/1) ... [2022-12-14 09:06:35,598 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:06:35" (1/1) ... [2022-12-14 09:06:35,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:06:35" (1/1) ... [2022-12-14 09:06:35,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:06:35,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:06:35,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:06:35,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:06:35,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:06:35" (1/1) ... [2022-12-14 09:06:35,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:06:35,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:06:35,631 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:06:35,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:06:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 09:06:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2022-12-14 09:06:35,668 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2022-12-14 09:06:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 09:06:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 09:06:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2022-12-14 09:06:35,668 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2022-12-14 09:06:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 09:06:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-12-14 09:06:35,669 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-12-14 09:06:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 09:06:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 09:06:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:06:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 09:06:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-12-14 09:06:35,669 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-12-14 09:06:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:06:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:06:35,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:06:35,781 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:06:35,783 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:06:36,079 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:06:36,143 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:06:36,143 INFO L300 CfgBuilder]: Removed 41 assume(true) statements. [2022-12-14 09:06:36,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:06:36 BoogieIcfgContainer [2022-12-14 09:06:36,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:06:36,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:06:36,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:06:36,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:06:36,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:06:35" (1/3) ... [2022-12-14 09:06:36,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a863a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:06:36, skipping insertion in model container [2022-12-14 09:06:36,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:06:35" (2/3) ... [2022-12-14 09:06:36,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a863a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:06:36, skipping insertion in model container [2022-12-14 09:06:36,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:06:36" (3/3) ... [2022-12-14 09:06:36,169 INFO L112 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-1.i [2022-12-14 09:06:36,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:06:36,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 09:06:36,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:06:36,240 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;@2eff022c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:06:36,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 09:06:36,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 76 states have (on average 1.8421052631578947) internal successors, (140), 95 states have internal predecessors, (140), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-12-14 09:06:36,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 09:06:36,250 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:06:36,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:06:36,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:06:36,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:06:36,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1563842699, now seen corresponding path program 1 times [2022-12-14 09:06:36,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:06:36,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392011952] [2022-12-14 09:06:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:06:36,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:06:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:06:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:06:36,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:06:36,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392011952] [2022-12-14 09:06:36,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392011952] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:06:36,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:06:36,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:06:36,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862688028] [2022-12-14 09:06:36,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:06:36,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 09:06:36,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:06:36,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 09:06:36,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 09:06:36,446 INFO L87 Difference]: Start difference. First operand has 105 states, 76 states have (on average 1.8421052631578947) internal successors, (140), 95 states have internal predecessors, (140), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:06:36,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:06:36,505 INFO L93 Difference]: Finished difference Result 206 states and 369 transitions. [2022-12-14 09:06:36,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 09:06:36,507 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 09:06:36,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:06:36,512 INFO L225 Difference]: With dead ends: 206 [2022-12-14 09:06:36,512 INFO L226 Difference]: Without dead ends: 97 [2022-12-14 09:06:36,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 09:06:36,518 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:06:36,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:06:36,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-12-14 09:06:36,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-12-14 09:06:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 87 states have internal predecessors, (92), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 09:06:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 118 transitions. [2022-12-14 09:06:36,550 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 118 transitions. Word has length 8 [2022-12-14 09:06:36,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:06:36,550 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 118 transitions. [2022-12-14 09:06:36,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:06:36,551 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 118 transitions. [2022-12-14 09:06:36,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 09:06:36,551 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:06:36,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:06:36,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:06:36,552 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:06:36,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:06:36,553 INFO L85 PathProgramCache]: Analyzing trace with hash 896972321, now seen corresponding path program 1 times [2022-12-14 09:06:36,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:06:36,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061744365] [2022-12-14 09:06:36,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:06:36,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:06:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:06:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:06:36,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:06:36,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061744365] [2022-12-14 09:06:36,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061744365] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:06:36,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:06:36,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 09:06:36,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396791249] [2022-12-14 09:06:36,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:06:36,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 09:06:36,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:06:36,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 09:06:36,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:06:36,755 INFO L87 Difference]: Start difference. First operand 97 states and 118 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:06:36,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:06:36,875 INFO L93 Difference]: Finished difference Result 99 states and 119 transitions. [2022-12-14 09:06:36,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 09:06:36,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-12-14 09:06:36,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:06:36,877 INFO L225 Difference]: With dead ends: 99 [2022-12-14 09:06:36,877 INFO L226 Difference]: Without dead ends: 96 [2022-12-14 09:06:36,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:06:36,878 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 168 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:06:36,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 205 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:06:36,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-12-14 09:06:36,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2022-12-14 09:06:36,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 86 states have internal predecessors, (91), 20 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 09:06:36,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 116 transitions. [2022-12-14 09:06:36,888 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 116 transitions. Word has length 15 [2022-12-14 09:06:36,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:06:36,889 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 116 transitions. [2022-12-14 09:06:36,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:06:36,889 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 116 transitions. [2022-12-14 09:06:36,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 09:06:36,890 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:06:36,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:06:36,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 09:06:36,890 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:06:36,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:06:36,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1865049645, now seen corresponding path program 1 times [2022-12-14 09:06:36,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:06:36,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794899703] [2022-12-14 09:06:36,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:06:36,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:06:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:06:37,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:06:37,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:06:37,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794899703] [2022-12-14 09:06:37,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794899703] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:06:37,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:06:37,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 09:06:37,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967035080] [2022-12-14 09:06:37,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:06:37,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 09:06:37,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:06:37,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 09:06:37,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-14 09:06:37,371 INFO L87 Difference]: Start difference. First operand 96 states and 116 transitions. Second operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:06:37,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:06:37,770 INFO L93 Difference]: Finished difference Result 181 states and 217 transitions. [2022-12-14 09:06:37,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 09:06:37,770 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-12-14 09:06:37,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:06:37,771 INFO L225 Difference]: With dead ends: 181 [2022-12-14 09:06:37,771 INFO L226 Difference]: Without dead ends: 175 [2022-12-14 09:06:37,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-12-14 09:06:37,772 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 349 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:06:37,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 469 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:06:37,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-12-14 09:06:37,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 159. [2022-12-14 09:06:37,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 131 states have (on average 1.2671755725190839) internal successors, (166), 145 states have internal predecessors, (166), 23 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-14 09:06:37,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 196 transitions. [2022-12-14 09:06:37,789 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 196 transitions. Word has length 18 [2022-12-14 09:06:37,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:06:37,790 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 196 transitions. [2022-12-14 09:06:37,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:06:37,790 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 196 transitions. [2022-12-14 09:06:37,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 09:06:37,790 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:06:37,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:06:37,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 09:06:37,791 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:06:37,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:06:37,791 INFO L85 PathProgramCache]: Analyzing trace with hash 2031360974, now seen corresponding path program 1 times [2022-12-14 09:06:37,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:06:37,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686067549] [2022-12-14 09:06:37,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:06:37,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:06:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:06:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:06:38,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:06:38,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686067549] [2022-12-14 09:06:38,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686067549] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:06:38,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:06:38,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-14 09:06:38,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072779980] [2022-12-14 09:06:38,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:06:38,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 09:06:38,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:06:38,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 09:06:38,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-14 09:06:38,444 INFO L87 Difference]: Start difference. First operand 159 states and 196 transitions. Second operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:06:39,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:06:39,333 INFO L93 Difference]: Finished difference Result 253 states and 308 transitions. [2022-12-14 09:06:39,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 09:06:39,333 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-12-14 09:06:39,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:06:39,334 INFO L225 Difference]: With dead ends: 253 [2022-12-14 09:06:39,334 INFO L226 Difference]: Without dead ends: 250 [2022-12-14 09:06:39,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-12-14 09:06:39,336 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 298 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 09:06:39,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 169 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 09:06:39,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-12-14 09:06:39,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 234. [2022-12-14 09:06:39,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 199 states have (on average 1.2613065326633166) internal successors, (251), 214 states have internal predecessors, (251), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 09:06:39,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 290 transitions. [2022-12-14 09:06:39,373 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 290 transitions. Word has length 21 [2022-12-14 09:06:39,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:06:39,374 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 290 transitions. [2022-12-14 09:06:39,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 9 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:06:39,374 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 290 transitions. [2022-12-14 09:06:39,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 09:06:39,374 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:06:39,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:06:39,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 09:06:39,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:06:39,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:06:39,376 INFO L85 PathProgramCache]: Analyzing trace with hash -66680349, now seen corresponding path program 1 times [2022-12-14 09:06:39,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:06:39,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864124465] [2022-12-14 09:06:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:06:39,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:06:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:06:39,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:06:39,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:06:39,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864124465] [2022-12-14 09:06:39,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864124465] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:06:39,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:06:39,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 09:06:39,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341821980] [2022-12-14 09:06:39,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:06:39,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 09:06:39,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:06:39,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 09:06:39,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-12-14 09:06:39,852 INFO L87 Difference]: Start difference. First operand 234 states and 290 transitions. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:06:40,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:06:40,645 INFO L93 Difference]: Finished difference Result 254 states and 309 transitions. [2022-12-14 09:06:40,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 09:06:40,645 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-12-14 09:06:40,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:06:40,648 INFO L225 Difference]: With dead ends: 254 [2022-12-14 09:06:40,648 INFO L226 Difference]: Without dead ends: 251 [2022-12-14 09:06:40,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-12-14 09:06:40,649 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 349 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 09:06:40,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 142 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 09:06:40,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-12-14 09:06:40,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 234. [2022-12-14 09:06:40,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 199 states have (on average 1.256281407035176) internal successors, (250), 214 states have internal predecessors, (250), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 09:06:40,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 289 transitions. [2022-12-14 09:06:40,667 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 289 transitions. Word has length 24 [2022-12-14 09:06:40,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:06:40,668 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 289 transitions. [2022-12-14 09:06:40,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:06:40,668 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 289 transitions. [2022-12-14 09:06:40,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 09:06:40,668 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:06:40,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:06:40,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 09:06:40,669 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:06:40,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:06:40,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1858713401, now seen corresponding path program 1 times [2022-12-14 09:06:40,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:06:40,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185303280] [2022-12-14 09:06:40,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:06:40,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:06:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:06:41,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:06:41,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:06:41,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185303280] [2022-12-14 09:06:41,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185303280] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:06:41,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:06:41,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 09:06:41,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288825905] [2022-12-14 09:06:41,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:06:41,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 09:06:41,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:06:41,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 09:06:41,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-12-14 09:06:41,327 INFO L87 Difference]: Start difference. First operand 234 states and 289 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:06:42,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:06:42,075 INFO L93 Difference]: Finished difference Result 251 states and 304 transitions. [2022-12-14 09:06:42,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 09:06:42,075 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-12-14 09:06:42,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:06:42,077 INFO L225 Difference]: With dead ends: 251 [2022-12-14 09:06:42,077 INFO L226 Difference]: Without dead ends: 248 [2022-12-14 09:06:42,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-12-14 09:06:42,079 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 328 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 09:06:42,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 169 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 09:06:42,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-12-14 09:06:42,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 234. [2022-12-14 09:06:42,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 199 states have (on average 1.2512562814070352) internal successors, (249), 214 states have internal predecessors, (249), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 09:06:42,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 288 transitions. [2022-12-14 09:06:42,098 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 288 transitions. Word has length 27 [2022-12-14 09:06:42,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:06:42,098 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 288 transitions. [2022-12-14 09:06:42,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:06:42,098 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 288 transitions. [2022-12-14 09:06:42,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 09:06:42,099 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:06:42,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:06:42,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 09:06:42,099 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:06:42,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:06:42,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1917225074, now seen corresponding path program 1 times [2022-12-14 09:06:42,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:06:42,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633803777] [2022-12-14 09:06:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:06:42,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:06:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:06:43,287 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:06:43,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:06:43,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633803777] [2022-12-14 09:06:43,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633803777] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:06:43,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041148839] [2022-12-14 09:06:43,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:06:43,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:06:43,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:06:43,289 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:06:43,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 09:06:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:06:43,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 146 conjunts are in the unsatisfiable core [2022-12-14 09:06:43,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:06:43,496 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 09:06:43,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-14 09:06:43,513 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 09:06:43,514 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2022-12-14 09:06:43,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:43,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-14 09:06:43,558 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 7 treesize of output 3 [2022-12-14 09:06:43,564 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 7 treesize of output 3 [2022-12-14 09:06:43,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:43,723 INFO L321 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2022-12-14 09:06:43,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 112 treesize of output 138 [2022-12-14 09:06:43,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 94 [2022-12-14 09:06:43,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 59 [2022-12-14 09:06:43,758 INFO L321 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2022-12-14 09:06:43,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 47 [2022-12-14 09:06:43,782 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 8 treesize of output 7 [2022-12-14 09:06:43,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:06:43,915 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 09:06:43,916 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 199 treesize of output 170 [2022-12-14 09:06:43,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-12-14 09:06:43,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:06:43,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:43,935 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2022-12-14 09:06:43,947 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-12-14 09:06:43,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 26 [2022-12-14 09:06:44,021 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 09:06:44,021 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-12-14 09:06:44,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-12-14 09:06:44,048 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 09:06:44,048 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 [2022-12-14 09:06:44,054 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-12-14 09:06:44,077 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 11 treesize of output 5 [2022-12-14 09:06:44,084 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 8 treesize of output 4 [2022-12-14 09:06:44,186 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 51 treesize of output 35 [2022-12-14 09:06:44,201 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 09:06:44,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 75 [2022-12-14 09:06:44,212 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 90 [2022-12-14 09:06:44,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:44,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:44,309 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2022-12-14 09:06:44,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2022-12-14 09:06:44,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 12 [2022-12-14 09:06:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:06:44,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:06:44,552 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_554 (Array Int Int))) (not (= |c_~#gl_list~0.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_554) |c_~#gl_list~0.base|) (+ |c_~#gl_list~0.offset| 4))))) is different from false [2022-12-14 09:06:44,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041148839] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:06:44,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [381502858] [2022-12-14 09:06:44,791 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-12-14 09:06:44,791 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:06:44,793 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:06:44,797 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:06:44,797 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:06:44,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:44,842 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 09:06:44,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 09:06:44,871 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 09:06:44,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 42 [2022-12-14 09:06:44,890 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 09:06:44,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 32 [2022-12-14 09:06:44,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:44,912 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 09:06:44,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 09:06:44,948 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-12-14 09:06:44,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-12-14 09:06:44,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:45,045 INFO L321 Elim1Store]: treesize reduction 128, result has 32.3 percent of original size [2022-12-14 09:06:45,046 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 71 [2022-12-14 09:06:45,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:45,104 INFO L321 Elim1Store]: treesize reduction 147, result has 22.2 percent of original size [2022-12-14 09:06:45,105 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 52 [2022-12-14 09:06:45,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:45,208 INFO L321 Elim1Store]: treesize reduction 131, result has 34.8 percent of original size [2022-12-14 09:06:45,209 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 0 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 70 [2022-12-14 09:06:45,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:45,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 11 [2022-12-14 09:06:45,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:45,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 11 [2022-12-14 09:06:45,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 09:06:45,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 09:06:45,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:45,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 11 [2022-12-14 09:06:45,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:45,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 11 [2022-12-14 09:06:45,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-12-14 09:06:45,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 09:06:45,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2022-12-14 09:06:45,391 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 09:06:45,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:45,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 09:06:45,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:45,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 09:06:45,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:45,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:45,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:45,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:45,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-12-14 09:06:45,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:45,470 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-12-14 09:06:45,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-12-14 09:06:45,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 09:06:45,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 09:06:45,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 09:06:45,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2022-12-14 09:06:45,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 09:06:45,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 09:06:45,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-12-14 09:06:45,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2022-12-14 09:06:45,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 09:06:45,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:45,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:06:45,942 INFO L321 Elim1Store]: treesize reduction 124, result has 27.1 percent of original size [2022-12-14 09:06:45,943 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 4 new quantified variables, introduced 8 case distinctions, treesize of input 256 treesize of output 273 [2022-12-14 09:06:45,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:45,956 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:06:46,011 INFO L321 Elim1Store]: treesize reduction 124, result has 27.1 percent of original size [2022-12-14 09:06:46,012 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 4 new quantified variables, introduced 7 case distinctions, treesize of input 244 treesize of output 261 [2022-12-14 09:06:46,068 INFO L321 Elim1Store]: treesize reduction 76, result has 24.8 percent of original size [2022-12-14 09:06:46,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 223 treesize of output 232 [2022-12-14 09:06:46,140 INFO L321 Elim1Store]: treesize reduction 108, result has 23.4 percent of original size [2022-12-14 09:06:46,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 226 treesize of output 242 [2022-12-14 09:06:46,168 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 09:06:46,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 224 treesize of output 226 [2022-12-14 09:06:46,613 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-12-14 09:06:46,613 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 192 [2022-12-14 09:06:46,625 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-12-14 09:06:46,625 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 192 treesize of output 174 [2022-12-14 09:06:46,634 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 09:06:46,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 182 treesize of output 170 [2022-12-14 09:06:46,689 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-12-14 09:06:46,689 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 192 [2022-12-14 09:06:46,700 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-12-14 09:06:46,700 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 192 treesize of output 174 [2022-12-14 09:06:46,709 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 09:06:46,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 182 treesize of output 170 [2022-12-14 09:06:46,735 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-12-14 09:06:46,739 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2022-12-14 09:06:46,747 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 09:06:46,759 INFO L197 IcfgInterpreter]: Interpreting procedure list_add with input of size 29 for LOIs [2022-12-14 09:06:46,794 INFO L197 IcfgInterpreter]: Interpreting procedure inspect with input of size 68 for LOIs [2022-12-14 09:06:46,923 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 79 for LOIs [2022-12-14 09:06:46,940 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:06:49,835 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3780#(and (= 22 (select |#length| 2)) (= |~#gl_list~0.base| 3) (= 2 (select |#length| 1)) (exists ((|v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_7| Int)) (and (< |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_7| |#StackHeapBarrier|) (not (= |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_7| 1)) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_7|) 16) |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_7|) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_7|) 12) 12) (not (= 3 |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_7|)) (not (= 2 |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_7|)) (= 12 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_7|) 16)) (= (select |#length| |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_7|) 20) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_7|) 12) |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_7|) (= (select |#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_7|) 1) (not (= |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_7| 0)))) (= (select |#valid| 3) 1) (= (select |#length| 3) 8) (= (select |#valid| 1) 1) (= (select (select |#memory_$Pointer$.offset| |~#gl_list~0.base|) (+ 4 |~#gl_list~0.offset|)) |~#gl_list~0.offset|) (= (select |#valid| 0) 0) (= |~#gl_list~0.offset| 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (not (= |~#gl_list~0.base| (select (select |#memory_$Pointer$.base| |~#gl_list~0.base|) |~#gl_list~0.offset|))) (not (= |~#gl_list~0.offset| (select (select |#memory_$Pointer$.offset| |~#gl_list~0.base|) |~#gl_list~0.offset|)))) (= (select (select |#memory_$Pointer$.base| |~#gl_list~0.base|) (+ 4 |~#gl_list~0.offset|)) |~#gl_list~0.base|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 09:06:49,835 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:06:49,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:06:49,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 24 [2022-12-14 09:06:49,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071408143] [2022-12-14 09:06:49,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 09:06:49,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 09:06:49,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:06:49,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 09:06:49,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1578, Unknown=5, NotChecked=80, Total=1806 [2022-12-14 09:06:49,837 INFO L87 Difference]: Start difference. First operand 234 states and 288 transitions. Second operand has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 09:06:53,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:06:53,523 INFO L93 Difference]: Finished difference Result 322 states and 386 transitions. [2022-12-14 09:06:53,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-14 09:06:53,524 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-12-14 09:06:53,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:06:53,525 INFO L225 Difference]: With dead ends: 322 [2022-12-14 09:06:53,525 INFO L226 Difference]: Without dead ends: 316 [2022-12-14 09:06:53,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 42 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=347, Invalid=3062, Unknown=17, NotChecked=114, Total=3540 [2022-12-14 09:06:53,526 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 573 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 112 mSolverCounterUnsat, 218 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 218 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 09:06:53,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 248 Invalid, 2537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2207 Invalid, 218 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 09:06:53,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-12-14 09:06:53,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 244. [2022-12-14 09:06:53,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 208 states have (on average 1.2355769230769231) internal successors, (257), 222 states have internal predecessors, (257), 28 states have call successors, (28), 10 states have call predecessors, (28), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 09:06:53,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 296 transitions. [2022-12-14 09:06:53,554 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 296 transitions. Word has length 29 [2022-12-14 09:06:53,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:06:53,554 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 296 transitions. [2022-12-14 09:06:53,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 09:06:53,554 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 296 transitions. [2022-12-14 09:06:53,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 09:06:53,554 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:06:53,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:06:53,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:06:53,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:06:53,755 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:06:53,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:06:53,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1990057232, now seen corresponding path program 1 times [2022-12-14 09:06:53,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:06:53,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255164447] [2022-12-14 09:06:53,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:06:53,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:06:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:06:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:06:54,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:06:54,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255164447] [2022-12-14 09:06:54,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255164447] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:06:54,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:06:54,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 09:06:54,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093595314] [2022-12-14 09:06:54,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:06:54,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 09:06:54,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:06:54,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 09:06:54,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-12-14 09:06:54,497 INFO L87 Difference]: Start difference. First operand 244 states and 296 transitions. Second operand has 12 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:06:55,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:06:55,600 INFO L93 Difference]: Finished difference Result 262 states and 313 transitions. [2022-12-14 09:06:55,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 09:06:55,601 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-12-14 09:06:55,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:06:55,602 INFO L225 Difference]: With dead ends: 262 [2022-12-14 09:06:55,602 INFO L226 Difference]: Without dead ends: 259 [2022-12-14 09:06:55,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-12-14 09:06:55,603 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 336 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 09:06:55,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 156 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 09:06:55,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-12-14 09:06:55,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 244. [2022-12-14 09:06:55,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 208 states have (on average 1.2307692307692308) internal successors, (256), 222 states have internal predecessors, (256), 28 states have call successors, (28), 10 states have call predecessors, (28), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 09:06:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 295 transitions. [2022-12-14 09:06:55,647 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 295 transitions. Word has length 30 [2022-12-14 09:06:55,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:06:55,647 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 295 transitions. [2022-12-14 09:06:55,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:06:55,647 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 295 transitions. [2022-12-14 09:06:55,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-14 09:06:55,648 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:06:55,648 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:06:55,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 09:06:55,648 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:06:55,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:06:55,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1829333469, now seen corresponding path program 1 times [2022-12-14 09:06:55,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:06:55,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592217468] [2022-12-14 09:06:55,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:06:55,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:06:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:06:56,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:06:56,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:06:56,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592217468] [2022-12-14 09:06:56,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592217468] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:06:56,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205600535] [2022-12-14 09:06:56,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:06:56,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:06:56,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:06:56,657 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:06:56,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 09:06:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:06:56,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 106 conjunts are in the unsatisfiable core [2022-12-14 09:06:56,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:06:56,803 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 09:06:56,803 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2022-12-14 09:06:56,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:56,810 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 13 treesize of output 7 [2022-12-14 09:06:56,822 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 09:06:56,823 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-14 09:06:56,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:56,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-12-14 09:06:56,945 INFO L321 Elim1Store]: treesize reduction 73, result has 3.9 percent of original size [2022-12-14 09:06:56,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 59 treesize of output 71 [2022-12-14 09:06:56,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:56,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 26 [2022-12-14 09:06:56,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:56,968 INFO L321 Elim1Store]: treesize reduction 36, result has 39.0 percent of original size [2022-12-14 09:06:56,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 43 [2022-12-14 09:06:57,046 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 09:06:57,046 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 1 case distinctions, treesize of input 50 treesize of output 45 [2022-12-14 09:06:57,113 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 09:06:57,113 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 [2022-12-14 09:06:57,116 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2022-12-14 09:06:57,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:57,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 40 treesize of output 16 [2022-12-14 09:06:57,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:57,281 INFO L321 Elim1Store]: treesize reduction 58, result has 24.7 percent of original size [2022-12-14 09:06:57,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 98 treesize of output 140 [2022-12-14 09:06:57,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:57,287 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 0 case distinctions, treesize of input 125 treesize of output 99 [2022-12-14 09:06:57,292 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 12 treesize of output 11 [2022-12-14 09:06:57,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:57,602 INFO L321 Elim1Store]: treesize reduction 44, result has 44.3 percent of original size [2022-12-14 09:06:57,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 721 treesize of output 608 [2022-12-14 09:06:57,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 600 treesize of output 598 [2022-12-14 09:06:57,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-12-14 09:06:57,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-12-14 09:06:57,894 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 16 treesize of output 8 [2022-12-14 09:06:57,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:06:57,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:06:58,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205600535] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:06:58,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2007785270] [2022-12-14 09:06:58,224 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-12-14 09:06:58,224 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:06:58,224 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:06:58,224 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:06:58,224 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:06:58,262 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-14 09:06:58,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 42 [2022-12-14 09:06:58,294 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-12-14 09:06:58,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-12-14 09:06:58,303 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-12-14 09:06:58,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:58,311 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2022-12-14 09:06:58,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:58,320 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2022-12-14 09:06:58,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:58,410 INFO L321 Elim1Store]: treesize reduction 128, result has 32.3 percent of original size [2022-12-14 09:06:58,410 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 71 [2022-12-14 09:06:58,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:58,474 INFO L321 Elim1Store]: treesize reduction 147, result has 22.2 percent of original size [2022-12-14 09:06:58,474 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 52 [2022-12-14 09:06:58,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:58,578 INFO L321 Elim1Store]: treesize reduction 131, result has 34.8 percent of original size [2022-12-14 09:06:58,579 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 0 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 70 [2022-12-14 09:06:58,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 09:06:58,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:58,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-12-14 09:06:58,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:58,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-12-14 09:06:58,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 09:06:58,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:58,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-12-14 09:06:58,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:58,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-12-14 09:06:58,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2022-12-14 09:06:58,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 09:06:58,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-12-14 09:06:58,729 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 09:06:58,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:58,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 09:06:58,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:58,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-12-14 09:06:58,795 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-14 09:06:58,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 37 treesize of output 65 [2022-12-14 09:06:58,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2022-12-14 09:06:58,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 09:06:58,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 09:06:58,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 09:06:58,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 09:06:58,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 09:06:58,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 09:06:58,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-12-14 09:06:58,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2022-12-14 09:06:58,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 09:06:59,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:59,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:06:59,236 INFO L321 Elim1Store]: treesize reduction 124, result has 27.1 percent of original size [2022-12-14 09:06:59,236 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 4 new quantified variables, introduced 8 case distinctions, treesize of input 256 treesize of output 273 [2022-12-14 09:06:59,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:06:59,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:06:59,299 INFO L321 Elim1Store]: treesize reduction 124, result has 27.1 percent of original size [2022-12-14 09:06:59,299 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 4 new quantified variables, introduced 7 case distinctions, treesize of input 244 treesize of output 261 [2022-12-14 09:06:59,366 INFO L321 Elim1Store]: treesize reduction 96, result has 31.9 percent of original size [2022-12-14 09:06:59,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 228 treesize of output 256 [2022-12-14 09:06:59,398 INFO L321 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2022-12-14 09:06:59,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 221 treesize of output 230 [2022-12-14 09:06:59,411 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 226 [2022-12-14 09:06:59,964 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-12-14 09:06:59,964 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 192 [2022-12-14 09:06:59,976 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-12-14 09:06:59,976 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 192 treesize of output 174 [2022-12-14 09:06:59,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 170 [2022-12-14 09:07:00,047 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-12-14 09:07:00,047 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 192 [2022-12-14 09:07:00,059 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-12-14 09:07:00,060 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 192 treesize of output 174 [2022-12-14 09:07:00,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 170 [2022-12-14 09:07:00,098 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-12-14 09:07:00,101 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2022-12-14 09:07:00,105 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-12-14 09:07:00,118 INFO L197 IcfgInterpreter]: Interpreting procedure list_add with input of size 134 for LOIs [2022-12-14 09:07:00,199 INFO L197 IcfgInterpreter]: Interpreting procedure inspect with input of size 68 for LOIs [2022-12-14 09:07:00,344 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 84 for LOIs [2022-12-14 09:07:00,355 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:07:08,906 WARN L233 SmtUtils]: Spent 6.61s on a formula simplification. DAG size of input: 208 DAG size of output: 189 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:07:11,461 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5625#(and (exists ((|v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_17| Int)) (and (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_17|) 12) 12) (not (= 0 |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_17|)) (= (select |#valid| |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_17|) 1) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_17|) 12) |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_17|) (< |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_17| |#StackHeapBarrier|) (= 20 (select |#length| |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_17|)) (not (= 1 |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_17|)) (not (= 3 |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_17|)) (not (= 2 |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_17|)) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_17|) 16) 12) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_17|) 16) |v_ULTIMATE.start_gl_insert_~node~1#1.base_BEFORE_CALL_17|))) (= 22 (select |#length| 2)) (= (select (select |#memory_$Pointer$.base| |~#gl_list~0.base|) (+ 4 |~#gl_list~0.offset|)) 0) (= |~#gl_list~0.base| 3) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#length| 3) 8) (= (select (select |#memory_$Pointer$.offset| |~#gl_list~0.base|) (+ 4 |~#gl_list~0.offset|)) 0) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= |~#gl_list~0.offset| 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (not (= |~#gl_list~0.base| (select (select |#memory_$Pointer$.base| |~#gl_list~0.base|) |~#gl_list~0.offset|))) (not (= |~#gl_list~0.offset| (select (select |#memory_$Pointer$.offset| |~#gl_list~0.base|) |~#gl_list~0.offset|)))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 09:07:11,461 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:07:11,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:07:11,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2022-12-14 09:07:11,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791259503] [2022-12-14 09:07:11,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 09:07:11,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-14 09:07:11,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:07:11,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-14 09:07:11,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2527, Unknown=61, NotChecked=0, Total=2756 [2022-12-14 09:07:11,463 INFO L87 Difference]: Start difference. First operand 244 states and 295 transitions. Second operand has 31 states, 23 states have (on average 2.217391304347826) internal successors, (51), 21 states have internal predecessors, (51), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 09:07:16,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:07:16,187 INFO L93 Difference]: Finished difference Result 388 states and 463 transitions. [2022-12-14 09:07:16,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-14 09:07:16,187 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 23 states have (on average 2.217391304347826) internal successors, (51), 21 states have internal predecessors, (51), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 32 [2022-12-14 09:07:16,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:07:16,189 INFO L225 Difference]: With dead ends: 388 [2022-12-14 09:07:16,189 INFO L226 Difference]: Without dead ends: 385 [2022-12-14 09:07:16,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1611 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=611, Invalid=6246, Unknown=115, NotChecked=0, Total=6972 [2022-12-14 09:07:16,190 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 1860 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 318 mSolverCounterUnsat, 236 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1860 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 236 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:07:16,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1860 Valid, 315 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2417 Invalid, 236 Unknown, 0 Unchecked, 2.2s Time] [2022-12-14 09:07:16,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-12-14 09:07:16,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 247. [2022-12-14 09:07:16,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 211 states have (on average 1.2227488151658767) internal successors, (258), 225 states have internal predecessors, (258), 28 states have call successors, (28), 10 states have call predecessors, (28), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 09:07:16,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 297 transitions. [2022-12-14 09:07:16,226 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 297 transitions. Word has length 32 [2022-12-14 09:07:16,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:07:16,226 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 297 transitions. [2022-12-14 09:07:16,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 23 states have (on average 2.217391304347826) internal successors, (51), 21 states have internal predecessors, (51), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 09:07:16,226 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 297 transitions. [2022-12-14 09:07:16,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 09:07:16,227 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:07:16,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:07:16,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 09:07:16,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:07:16,429 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:07:16,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:07:16,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2141730359, now seen corresponding path program 1 times [2022-12-14 09:07:16,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:07:16,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370568695] [2022-12-14 09:07:16,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:07:16,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:07:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:07:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:07:16,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:07:16,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370568695] [2022-12-14 09:07:16,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370568695] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:07:16,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:07:16,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 09:07:16,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186967504] [2022-12-14 09:07:16,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:07:16,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 09:07:16,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:07:16,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 09:07:16,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-12-14 09:07:16,878 INFO L87 Difference]: Start difference. First operand 247 states and 297 transitions. Second operand has 12 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:07:17,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:07:17,522 INFO L93 Difference]: Finished difference Result 264 states and 313 transitions. [2022-12-14 09:07:17,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 09:07:17,523 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-12-14 09:07:17,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:07:17,524 INFO L225 Difference]: With dead ends: 264 [2022-12-14 09:07:17,524 INFO L226 Difference]: Without dead ends: 261 [2022-12-14 09:07:17,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-12-14 09:07:17,524 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 407 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 09:07:17,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 159 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 09:07:17,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-12-14 09:07:17,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 247. [2022-12-14 09:07:17,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 211 states have (on average 1.2180094786729858) internal successors, (257), 225 states have internal predecessors, (257), 28 states have call successors, (28), 10 states have call predecessors, (28), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 09:07:17,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 296 transitions. [2022-12-14 09:07:17,561 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 296 transitions. Word has length 33 [2022-12-14 09:07:17,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:07:17,561 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 296 transitions. [2022-12-14 09:07:17,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:07:17,561 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 296 transitions. [2022-12-14 09:07:17,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 09:07:17,562 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:07:17,562 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:07:17,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 09:07:17,562 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:07:17,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:07:17,562 INFO L85 PathProgramCache]: Analyzing trace with hash 929776377, now seen corresponding path program 1 times [2022-12-14 09:07:17,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:07:17,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037006001] [2022-12-14 09:07:17,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:07:17,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:07:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:07:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 09:07:19,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:07:19,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037006001] [2022-12-14 09:07:19,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037006001] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:07:19,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603514534] [2022-12-14 09:07:19,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:07:19,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:07:19,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:07:19,319 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:07:19,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b83694ad-a286-466a-8cf1-0698088b2cee/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 09:07:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:07:19,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 193 conjunts are in the unsatisfiable core [2022-12-14 09:07:19,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:07:19,501 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 09:07:19,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-14 09:07:19,508 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-12-14 09:07:19,513 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 09:07:19,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:19,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 [2022-12-14 09:07:19,561 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 9 treesize of output 3 [2022-12-14 09:07:19,791 INFO L321 Elim1Store]: treesize reduction 87, result has 3.3 percent of original size [2022-12-14 09:07:19,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 156 treesize of output 140 [2022-12-14 09:07:19,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:19,884 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-12-14 09:07:19,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 121 treesize of output 123 [2022-12-14 09:07:19,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:19,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 71 [2022-12-14 09:07:19,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:19,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2022-12-14 09:07:19,903 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 19 [2022-12-14 09:07:19,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:19,945 INFO L321 Elim1Store]: treesize reduction 32, result has 49.2 percent of original size [2022-12-14 09:07:19,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 41 [2022-12-14 09:07:19,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:19,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 53 [2022-12-14 09:07:19,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:19,969 INFO L321 Elim1Store]: treesize reduction 30, result has 40.0 percent of original size [2022-12-14 09:07:19,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 55 [2022-12-14 09:07:20,000 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 19 [2022-12-14 09:07:20,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:20,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:20,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:20,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:07:20,113 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 09:07:20,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 127 treesize of output 101 [2022-12-14 09:07:20,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 77 [2022-12-14 09:07:20,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:20,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:20,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 64 [2022-12-14 09:07:20,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:20,312 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 09:07:20,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 89 treesize of output 85 [2022-12-14 09:07:20,334 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-12-14 09:07:20,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 09:07:20,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:20,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:07:20,427 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 09:07:20,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 45 [2022-12-14 09:07:20,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 35 treesize of output 19 [2022-12-14 09:07:20,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:20,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:07:20,626 INFO L321 Elim1Store]: treesize reduction 74, result has 27.5 percent of original size [2022-12-14 09:07:20,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 188 treesize of output 139 [2022-12-14 09:07:20,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:20,644 INFO L321 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2022-12-14 09:07:20,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 166 treesize of output 143 [2022-12-14 09:07:20,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:20,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 116 [2022-12-14 09:07:20,662 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 09:07:20,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 77 [2022-12-14 09:07:20,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:20,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 70 [2022-12-14 09:07:20,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:07:20,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 44 [2022-12-14 09:07:21,038 INFO L321 Elim1Store]: treesize reduction 114, result has 35.2 percent of original size [2022-12-14 09:07:21,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 344 treesize of output 330 [2022-12-14 09:07:21,131 INFO L321 Elim1Store]: treesize reduction 162, result has 31.6 percent of original size [2022-12-14 09:07:21,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 323 treesize of output 345 [2022-12-14 09:08:00,933 WARN L233 SmtUtils]: Spent 17.75s on a formula simplification. DAG size of input: 508 DAG size of output: 108 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:08:03,575 INFO L321 Elim1Store]: treesize reduction 45, result has 73.4 percent of original size [2022-12-14 09:08:03,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 358 treesize of output 400 [2022-12-14 09:08:03,647 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 09:08:03,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 277 treesize of output 359 [2022-12-14 09:10:54,702 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 13 treesize of output 9 [2022-12-14 09:11:12,051 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 13 treesize of output 9 [2022-12-14 09:11:16,312 WARN L207 Elim1Store]: Array PQE input equivalent to false