./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_append_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_append_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V --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 3a59620f668b7c0725f940bc66e10441fbb56ee9b9fb687de4bd19a3f12eaeda --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:34:49,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:34:49,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:34:49,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:34:49,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:34:49,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:34:49,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:34:49,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:34:49,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:34:49,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:34:49,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:34:49,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:34:49,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:34:49,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:34:49,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:34:49,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:34:49,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:34:49,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:34:49,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:34:49,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:34:49,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:34:49,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:34:49,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:34:49,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:34:49,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:34:49,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:34:49,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:34:49,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:34:49,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:34:49,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:34:49,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:34:49,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:34:49,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:34:49,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:34:49,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:34:49,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:34:49,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:34:49,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:34:49,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:34:49,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:34:49,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:34:49,824 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:34:49,869 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:34:49,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:34:49,869 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:34:49,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:34:49,870 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:34:49,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:34:49,871 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:34:49,871 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:34:49,872 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:34:49,872 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:34:49,872 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:34:49,872 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:34:49,873 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:34:49,873 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:34:49,873 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:34:49,873 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:34:49,874 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:34:49,874 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:34:49,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:34:49,875 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:34:49,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:34:49,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:34:49,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:34:49,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:34:49,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:34:49,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:34:49,877 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:34:49,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:34:49,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:34:49,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:34:49,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:34:49,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:34:49,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:34:49,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:34:49,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:34:49,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:34:49,879 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:34:49,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:34:49,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:34:49,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:34:49,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:34:49,880 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a59620f668b7c0725f940bc66e10441fbb56ee9b9fb687de4bd19a3f12eaeda [2021-11-23 02:34:50,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:34:50,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:34:50,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:34:50,185 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:34:50,186 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:34:50,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/list-simple/dll2n_append_equal.i [2021-11-23 02:34:50,261 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/data/676f86625/420a742b9e2446ce9f0bf653070aba0e/FLAGb810b12d4 [2021-11-23 02:34:50,767 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:34:50,768 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/sv-benchmarks/c/list-simple/dll2n_append_equal.i [2021-11-23 02:34:50,784 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/data/676f86625/420a742b9e2446ce9f0bf653070aba0e/FLAGb810b12d4 [2021-11-23 02:34:51,105 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/data/676f86625/420a742b9e2446ce9f0bf653070aba0e [2021-11-23 02:34:51,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:34:51,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:34:51,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:34:51,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:34:51,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:34:51,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:34:51" (1/1) ... [2021-11-23 02:34:51,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64e8097a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:51, skipping insertion in model container [2021-11-23 02:34:51,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:34:51" (1/1) ... [2021-11-23 02:34:51,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:34:51,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:34:51,625 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/sv-benchmarks/c/list-simple/dll2n_append_equal.i[24333,24346] [2021-11-23 02:34:51,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:34:51,646 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:34:51,701 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/sv-benchmarks/c/list-simple/dll2n_append_equal.i[24333,24346] [2021-11-23 02:34:51,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:34:51,734 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:34:51,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:51 WrapperNode [2021-11-23 02:34:51,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:34:51,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:34:51,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:34:51,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:34:51,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:51" (1/1) ... [2021-11-23 02:34:51,759 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:51" (1/1) ... [2021-11-23 02:34:51,786 INFO L137 Inliner]: procedures = 127, calls = 37, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 122 [2021-11-23 02:34:51,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:34:51,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:34:51,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:34:51,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:34:51,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:51" (1/1) ... [2021-11-23 02:34:51,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:51" (1/1) ... [2021-11-23 02:34:51,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:51" (1/1) ... [2021-11-23 02:34:51,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:51" (1/1) ... [2021-11-23 02:34:51,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:51" (1/1) ... [2021-11-23 02:34:51,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:51" (1/1) ... [2021-11-23 02:34:51,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:51" (1/1) ... [2021-11-23 02:34:51,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:34:51,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:34:51,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:34:51,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:34:51,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:51" (1/1) ... [2021-11-23 02:34:51,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:34:51,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:34:51,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:34:51,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:34:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:34:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:34:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-23 02:34:51,906 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-23 02:34:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:34:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:34:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:34:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:34:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:34:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:34:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:34:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:34:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:34:51,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:34:52,045 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:34:52,047 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:34:52,257 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:34:52,299 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:34:52,299 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 02:34:52,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:34:52 BoogieIcfgContainer [2021-11-23 02:34:52,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:34:52,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:34:52,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:34:52,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:34:52,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:34:51" (1/3) ... [2021-11-23 02:34:52,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad250a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:34:52, skipping insertion in model container [2021-11-23 02:34:52,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:34:51" (2/3) ... [2021-11-23 02:34:52,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad250a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:34:52, skipping insertion in model container [2021-11-23 02:34:52,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:34:52" (3/3) ... [2021-11-23 02:34:52,312 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_append_equal.i [2021-11-23 02:34:52,317 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:34:52,318 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:34:52,368 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:34:52,376 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:34:52,376 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:34:52,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:34:52,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 02:34:52,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:34:52,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:34:52,400 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:34:52,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:34:52,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1994480883, now seen corresponding path program 1 times [2021-11-23 02:34:52,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:34:52,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013025542] [2021-11-23 02:34:52,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:34:52,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:34:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:34:52,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:34:52,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:34:52,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013025542] [2021-11-23 02:34:52,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013025542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:34:52,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:34:52,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:34:52,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591030510] [2021-11-23 02:34:52,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:34:52,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:34:52,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:34:52,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:34:52,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:34:52,660 INFO L87 Difference]: Start difference. First operand has 23 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:34:52,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:34:52,738 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2021-11-23 02:34:52,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:34:52,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-23 02:34:52,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:34:52,749 INFO L225 Difference]: With dead ends: 45 [2021-11-23 02:34:52,749 INFO L226 Difference]: Without dead ends: 22 [2021-11-23 02:34:52,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:34:52,758 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:34:52,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 45 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:34:52,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-23 02:34:52,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-11-23 02:34:52,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:34:52,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2021-11-23 02:34:52,814 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 12 [2021-11-23 02:34:52,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:34:52,815 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-11-23 02:34:52,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 02:34:52,815 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-11-23 02:34:52,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:34:52,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:34:52,817 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:34:52,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:34:52,818 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:34:52,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:34:52,819 INFO L85 PathProgramCache]: Analyzing trace with hash -927493003, now seen corresponding path program 1 times [2021-11-23 02:34:52,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:34:52,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604811048] [2021-11-23 02:34:52,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:34:52,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:34:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:34:52,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:34:52,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:34:52,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604811048] [2021-11-23 02:34:52,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604811048] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:34:52,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339329698] [2021-11-23 02:34:52,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:34:52,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:34:52,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:34:52,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:34:52,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:34:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:34:53,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:34:53,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:34:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:34:53,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:34:53,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:34:53,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339329698] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:34:53,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2081748118] [2021-11-23 02:34:53,305 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-23 02:34:53,306 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:34:53,311 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:34:53,317 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:34:53,318 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:34:53,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:53,435 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:34:53,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-23 02:34:53,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:53,533 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:34:53,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:34:53,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:34:53,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:34:53,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:53,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:53,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:53,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-23 02:34:53,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:53,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:53,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:53,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-23 02:34:53,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:53,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:53,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:53,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-23 02:34:53,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:53,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:34:53,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:53,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:34:53,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:53,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:34:53,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:53,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:34:54,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:34:54,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 416 treesize of output 393 [2021-11-23 02:34:54,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:34:54,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:34:54,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 393 treesize of output 376 [2021-11-23 02:34:54,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:34:54,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:34:54,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 382 treesize of output 266 [2021-11-23 02:34:54,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 126 [2021-11-23 02:34:54,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 113 [2021-11-23 02:34:54,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:34:54,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:34:54,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:34:54,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:34:54,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:34:54,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:34:54,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:34:54,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:34:54,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:34:54,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:34:54,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,680 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-23 02:34:54,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 225 [2021-11-23 02:34:54,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,766 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-23 02:34:54,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 267 treesize of output 259 [2021-11-23 02:34:54,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 286 [2021-11-23 02:34:54,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 17 [2021-11-23 02:34:54,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 17 [2021-11-23 02:34:54,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:54,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-23 02:34:55,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:55,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:55,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:55,010 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:34:55,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 135 treesize of output 92 [2021-11-23 02:34:55,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:55,073 INFO L354 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2021-11-23 02:34:55,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 28 [2021-11-23 02:34:55,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:34:55,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-23 02:34:55,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-23 02:34:55,512 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:34:55,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:34:55,942 INFO L354 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2021-11-23 02:34:55,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 106 [2021-11-23 02:34:55,959 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 02:34:55,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 69 [2021-11-23 02:34:55,985 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:34:55,988 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:34:55,990 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:34:56,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:56,128 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-23 02:34:56,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 225 [2021-11-23 02:34:56,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:56,207 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-23 02:34:56,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 267 treesize of output 253 [2021-11-23 02:34:56,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:56,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 286 [2021-11-23 02:34:56,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:56,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 17 [2021-11-23 02:34:56,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:56,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-23 02:34:56,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:56,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:56,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:56,388 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:34:56,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 20 [2021-11-23 02:34:56,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:56,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:56,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:56,425 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:34:56,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 114 treesize of output 77 [2021-11-23 02:34:56,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:56,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 165 treesize of output 119 [2021-11-23 02:34:56,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:34:56,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:34:56,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:34:56,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:34:56,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:34:56,995 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-23 02:34:56,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 262 treesize of output 250 [2021-11-23 02:34:57,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:57,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:57,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:57,017 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:34:57,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 250 treesize of output 236 [2021-11-23 02:34:57,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:57,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:57,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:34:57,044 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:34:57,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 239 treesize of output 225 [2021-11-23 02:34:57,249 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 43 for LOIs [2021-11-23 02:34:57,472 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:35:04,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2081748118] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:35:04,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:35:04,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4, 4, 4] total 16 [2021-11-23 02:35:04,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454743851] [2021-11-23 02:35:04,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:35:04,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 02:35:04,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:04,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 02:35:04,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:35:04,238 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 13 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:35:04,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:35:04,568 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-11-23 02:35:04,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 02:35:04,569 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-11-23 02:35:04,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:35:04,570 INFO L225 Difference]: With dead ends: 33 [2021-11-23 02:35:04,570 INFO L226 Difference]: Without dead ends: 30 [2021-11-23 02:35:04,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:35:04,572 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 37 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:35:04,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 32 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 155 Invalid, 0 Unknown, 21 Unchecked, 0.3s Time] [2021-11-23 02:35:04,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-23 02:35:04,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2021-11-23 02:35:04,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:35:04,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-11-23 02:35:04,580 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 18 [2021-11-23 02:35:04,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:35:04,581 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-11-23 02:35:04,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:35:04,581 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2021-11-23 02:35:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:35:04,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:35:04,582 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:35:04,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:35:04,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-23 02:35:04,797 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:35:04,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:35:04,798 INFO L85 PathProgramCache]: Analyzing trace with hash -927548989, now seen corresponding path program 1 times [2021-11-23 02:35:04,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:35:04,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560194282] [2021-11-23 02:35:04,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:04,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:35:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:35:04,912 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:35:04,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560194282] [2021-11-23 02:35:04,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560194282] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:35:04,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365360593] [2021-11-23 02:35:04,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:04,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:35:04,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:35:04,917 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:35:04,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:35:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:05,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:35:05,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:35:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:35:05,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:35:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:35:05,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365360593] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:35:05,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [323398362] [2021-11-23 02:35:05,120 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-23 02:35:05,121 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:35:05,121 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:35:05,121 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:35:05,122 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:35:05,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,180 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:35:05,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-23 02:35:05,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,207 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:35:05,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:35:05,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:35:05,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:35:05,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-23 02:35:05,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-23 02:35:05,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-23 02:35:05,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:35:05,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:35:05,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:35:05,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:35:05,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 32 [2021-11-23 02:35:05,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2021-11-23 02:35:05,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 32 [2021-11-23 02:35:05,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:35:05,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:35:05,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:05,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:35:05,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:35:05,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:35:05,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:05,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:35:05,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:35:05,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:35:05,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,883 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-23 02:35:05,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 225 [2021-11-23 02:35:05,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,962 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-23 02:35:05,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 267 treesize of output 259 [2021-11-23 02:35:05,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:05,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 286 [2021-11-23 02:35:06,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:06,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 17 [2021-11-23 02:35:06,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:06,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-23 02:35:06,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:06,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:06,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:06,134 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:35:06,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 20 [2021-11-23 02:35:06,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:06,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:06,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:06,167 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:35:06,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 114 treesize of output 77 [2021-11-23 02:35:06,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:06,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 165 treesize of output 119 [2021-11-23 02:35:06,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:06,599 INFO L354 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2021-11-23 02:35:06,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 106 [2021-11-23 02:35:06,614 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 02:35:06,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 69 [2021-11-23 02:35:06,637 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:06,640 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:06,641 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:06,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:06,926 INFO L354 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2021-11-23 02:35:06,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 106 [2021-11-23 02:35:06,964 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 02:35:06,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 69 [2021-11-23 02:35:06,985 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:06,987 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:06,989 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:07,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:07,124 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-23 02:35:07,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 225 [2021-11-23 02:35:07,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:07,202 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-23 02:35:07,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 267 treesize of output 259 [2021-11-23 02:35:07,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:07,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 286 [2021-11-23 02:35:07,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:07,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 17 [2021-11-23 02:35:07,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:07,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-23 02:35:07,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:07,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:07,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:07,358 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:35:07,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 20 [2021-11-23 02:35:07,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:07,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:07,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:07,393 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:35:07,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 114 treesize of output 77 [2021-11-23 02:35:07,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:07,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 165 treesize of output 119 [2021-11-23 02:35:07,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:07,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:07,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:07,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:07,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:35:07,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:35:07,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:35:08,016 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 43 for LOIs [2021-11-23 02:35:08,205 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:35:12,343 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '424#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~head#1.base|) |ULTIMATE.start_dll_append_~head#1.offset|) |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~count~0#1| 0) (not (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~head#1.base|) |ULTIMATE.start_dll_append_~head#1.offset|) |ULTIMATE.start_dll_append_~new_last~0#1.base|) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2021-11-23 02:35:12,344 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:35:12,344 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:35:12,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-23 02:35:12,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847341415] [2021-11-23 02:35:12,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:35:12,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:35:12,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:12,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:35:12,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:35:12,346 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 02:35:12,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:35:12,400 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2021-11-23 02:35:12,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:35:12,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 18 [2021-11-23 02:35:12,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:35:12,401 INFO L225 Difference]: With dead ends: 42 [2021-11-23 02:35:12,401 INFO L226 Difference]: Without dead ends: 25 [2021-11-23 02:35:12,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-11-23 02:35:12,403 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:35:12,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 70 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:35:12,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-23 02:35:12,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-23 02:35:12,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:35:12,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-11-23 02:35:12,412 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 18 [2021-11-23 02:35:12,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:35:12,412 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-11-23 02:35:12,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 02:35:12,413 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2021-11-23 02:35:12,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 02:35:12,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:35:12,414 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:35:12,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 02:35:12,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:35:12,637 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:35:12,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:35:12,638 INFO L85 PathProgramCache]: Analyzing trace with hash 832503083, now seen corresponding path program 2 times [2021-11-23 02:35:12,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:35:12,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773555677] [2021-11-23 02:35:12,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:12,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:35:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:35:12,882 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:35:12,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773555677] [2021-11-23 02:35:12,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773555677] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:35:12,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499875178] [2021-11-23 02:35:12,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:35:12,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:35:12,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:35:12,893 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:35:12,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:35:12,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-23 02:35:12,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:35:12,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-23 02:35:12,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:35:13,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:35:13,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-23 02:35:13,297 INFO L354 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2021-11-23 02:35:13,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 24 [2021-11-23 02:35:13,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:35:13,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2021-11-23 02:35:13,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-11-23 02:35:13,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 02:35:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 02:35:13,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:35:13,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499875178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:35:13,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:35:13,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2021-11-23 02:35:13,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927644101] [2021-11-23 02:35:13,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:35:13,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 02:35:13,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:13,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 02:35:13,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:35:13,428 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:35:13,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:35:13,815 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2021-11-23 02:35:13,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:35:13,816 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-11-23 02:35:13,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:35:13,817 INFO L225 Difference]: With dead ends: 33 [2021-11-23 02:35:13,817 INFO L226 Difference]: Without dead ends: 31 [2021-11-23 02:35:13,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2021-11-23 02:35:13,819 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 42 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:35:13,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 62 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:35:13,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-23 02:35:13,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2021-11-23 02:35:13,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:35:13,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-11-23 02:35:13,827 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 24 [2021-11-23 02:35:13,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:35:13,828 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-11-23 02:35:13,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:35:13,828 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2021-11-23 02:35:13,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 02:35:13,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:35:13,829 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:35:13,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:35:14,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:35:14,045 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:35:14,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:35:14,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1171636344, now seen corresponding path program 1 times [2021-11-23 02:35:14,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:35:14,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984228064] [2021-11-23 02:35:14,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:14,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:35:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:35:14,316 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:35:14,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984228064] [2021-11-23 02:35:14,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984228064] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:35:14,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471012930] [2021-11-23 02:35:14,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:14,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:35:14,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:35:14,321 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:35:14,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:35:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:14,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-23 02:35:14,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:35:14,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-11-23 02:35:16,689 WARN L860 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.offset| Int) (|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| (store (store (store (select |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base|) (+ |node_create_~temp~0#1.offset| 4) 0) (+ |node_create_~temp~0#1.offset| 8) 0) |node_create_~temp~0#1.offset| (select (select |c_#memory_$Pointer$.base| |node_create_~temp~0#1.base|) |node_create_~temp~0#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true [2021-11-23 02:35:16,783 INFO L354 Elim1Store]: treesize reduction 187, result has 12.2 percent of original size [2021-11-23 02:35:16,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 35 [2021-11-23 02:35:16,905 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-23 02:35:16,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 19 [2021-11-23 02:35:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2021-11-23 02:35:16,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:35:19,154 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_node_create_~temp~0#1.offset_23| Int) (v_DerPreprocessor_19 Int) (|v_node_create_~temp~0#1.base_23| Int)) (or (<= |c_#StackHeapBarrier| |v_node_create_~temp~0#1.base_23|) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_23| (store (store (store (select |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_23|) (+ |v_node_create_~temp~0#1.offset_23| 4) 0) (+ |v_node_create_~temp~0#1.offset_23| 8) 0) |v_node_create_~temp~0#1.offset_23| v_DerPreprocessor_19)) |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|) 0)))) is different from false [2021-11-23 02:35:19,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471012930] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:35:19,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1807451596] [2021-11-23 02:35:19,160 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-23 02:35:19,160 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:35:19,161 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:35:19,161 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:35:19,161 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:35:19,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,217 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:35:19,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-23 02:35:19,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,263 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:35:19,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:35:19,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:35:19,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:35:19,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-23 02:35:19,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-23 02:35:19,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-23 02:35:19,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:35:19,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:35:19,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:35:19,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:35:19,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 32 [2021-11-23 02:35:19,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2021-11-23 02:35:19,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 32 [2021-11-23 02:35:19,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:35:19,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:19,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:35:19,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:35:19,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:35:19,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:35:19,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:35:19,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:19,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:35:19,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:19,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:35:19,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:20,027 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-23 02:35:20,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 225 [2021-11-23 02:35:20,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:20,136 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-23 02:35:20,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 267 treesize of output 253 [2021-11-23 02:35:20,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:20,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 286 [2021-11-23 02:35:20,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:20,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 17 [2021-11-23 02:35:20,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:20,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-23 02:35:20,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:20,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:20,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:20,338 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:35:20,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 20 [2021-11-23 02:35:20,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:20,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:20,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:20,387 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:35:20,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 26 [2021-11-23 02:35:20,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:20,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:20,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:20,433 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:35:20,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 26 [2021-11-23 02:35:20,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:20,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 108 treesize of output 68 [2021-11-23 02:35:20,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-23 02:35:20,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:20,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-23 02:35:20,746 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:20,748 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:20,751 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:20,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-23 02:35:20,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:20,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-23 02:35:20,984 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:20,986 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:20,993 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:20,995 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:20,996 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:21,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:21,174 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-23 02:35:21,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 225 [2021-11-23 02:35:21,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:21,290 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-23 02:35:21,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 267 treesize of output 259 [2021-11-23 02:35:21,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:21,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 286 [2021-11-23 02:35:21,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:21,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 17 [2021-11-23 02:35:21,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:21,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-23 02:35:21,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:21,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:21,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:21,497 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:35:21,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 20 [2021-11-23 02:35:21,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:21,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:21,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:21,558 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:35:21,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 26 [2021-11-23 02:35:21,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:21,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:21,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:21,600 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:35:21,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 26 [2021-11-23 02:35:21,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:21,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 108 treesize of output 68 [2021-11-23 02:35:21,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:21,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:21,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:21,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:21,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:35:21,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:35:21,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-23 02:35:22,214 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 43 for LOIs [2021-11-23 02:35:22,417 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:35:29,860 WARN L227 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 86 DAG size of output: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:31,900 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '843#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (not (= |ULTIMATE.start_main_~count~0#1| (+ |ULTIMATE.start_main_~len~0#1| 1))) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~ptr~0#1.base| 0) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2021-11-23 02:35:31,900 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:35:31,900 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:35:31,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2021-11-23 02:35:31,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632307955] [2021-11-23 02:35:31,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 02:35:31,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 02:35:31,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:31,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 02:35:31,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1017, Unknown=2, NotChecked=130, Total=1260 [2021-11-23 02:35:31,903 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 20 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-23 02:35:36,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:35:36,434 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2021-11-23 02:35:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:35:36,435 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 26 [2021-11-23 02:35:36,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:35:36,436 INFO L225 Difference]: With dead ends: 31 [2021-11-23 02:35:36,436 INFO L226 Difference]: Without dead ends: 23 [2021-11-23 02:35:36,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=139, Invalid=1273, Unknown=2, NotChecked=146, Total=1560 [2021-11-23 02:35:36,438 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:35:36,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 123 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 37 Unchecked, 0.3s Time] [2021-11-23 02:35:36,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-23 02:35:36,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-23 02:35:36,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:35:36,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-11-23 02:35:36,446 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 26 [2021-11-23 02:35:36,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:35:36,447 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-11-23 02:35:36,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-23 02:35:36,447 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-11-23 02:35:36,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 02:35:36,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:35:36,448 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:35:36,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:35:36,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:35:36,649 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:35:36,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:35:36,649 INFO L85 PathProgramCache]: Analyzing trace with hash -524387403, now seen corresponding path program 1 times [2021-11-23 02:35:36,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:35:36,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042475687] [2021-11-23 02:35:36,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:36,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:35:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:37,492 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:35:37,492 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:35:37,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042475687] [2021-11-23 02:35:37,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042475687] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:35:37,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131479321] [2021-11-23 02:35:37,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:37,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:35:37,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:35:37,493 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:35:37,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:35:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:37,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-23 02:35:37,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:35:38,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-23 02:35:44,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:44,276 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-11-23 02:35:44,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 30 [2021-11-23 02:35:45,111 INFO L354 Elim1Store]: treesize reduction 279, result has 20.5 percent of original size [2021-11-23 02:35:45,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 74 treesize of output 99 [2021-11-23 02:35:50,336 INFO L354 Elim1Store]: treesize reduction 96, result has 31.9 percent of original size [2021-11-23 02:35:50,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 109 treesize of output 106 [2021-11-23 02:35:50,354 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:35:50,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:35:53,119 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_node_create_~temp~0#1.offset_26| Int) (|ULTIMATE.start_dll_append_~last~0#1.offset| Int) (|ULTIMATE.start_dll_append_~last~0#1.base| Int) (|v_node_create_~temp~0#1.base_26| Int) (|ULTIMATE.start_dll_append_~new_last~0#1.offset| Int) (v_DerPreprocessor_30 Int)) (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_26| (store (store (store (select |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_26|) (+ |v_node_create_~temp~0#1.offset_26| 4) 0) (+ |v_node_create_~temp~0#1.offset_26| 8) 0) |v_node_create_~temp~0#1.offset_26| v_DerPreprocessor_30)))) (let ((.cse2 (select .cse1 |ULTIMATE.start_dll_append_~last~0#1.base|)) (.cse3 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4))) (or (not (= (select (select (let ((.cse0 (store .cse1 |ULTIMATE.start_dll_append_~last~0#1.base| (store .cse2 .cse3 |v_node_create_~temp~0#1.base_26|)))) (store .cse0 |v_node_create_~temp~0#1.base_26| (store (select .cse0 |v_node_create_~temp~0#1.base_26|) (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8) |ULTIMATE.start_dll_append_~last~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 0)) (not (= 0 (select .cse2 .cse3))) (<= |c_#StackHeapBarrier| |v_node_create_~temp~0#1.base_26|))))) is different from false [2021-11-23 02:35:53,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131479321] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:35:53,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [725567293] [2021-11-23 02:35:53,127 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-23 02:35:53,128 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:35:53,128 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:35:53,128 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:35:53,128 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:35:53,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,207 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:35:53,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:35:53,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 02:35:53,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:35:53,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:35:53,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-23 02:35:53,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-23 02:35:53,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-23 02:35:53,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:35:53,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:35:53,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:35:53,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:35:53,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:35:53,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 416 treesize of output 393 [2021-11-23 02:35:53,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:35:53,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:35:53,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 393 treesize of output 376 [2021-11-23 02:35:53,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,761 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-23 02:35:53,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 382 treesize of output 363 [2021-11-23 02:35:53,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:35:53,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:35:53,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 429 treesize of output 313 [2021-11-23 02:35:53,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,886 INFO L354 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-11-23 02:35:53,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 266 treesize of output 259 [2021-11-23 02:35:53,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 46 treesize of output 22 [2021-11-23 02:35:53,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:53,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 40 treesize of output 16 [2021-11-23 02:35:54,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:54,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:35:54,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:54,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:35:54,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:54,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:35:54,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:35:54,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:54,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:35:54,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:35:54,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:54,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:35:54,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:54,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:35:54,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:54,444 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-23 02:35:54,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 225 [2021-11-23 02:35:54,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:54,561 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-23 02:35:54,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 267 treesize of output 259 [2021-11-23 02:35:54,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:54,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 286 [2021-11-23 02:35:54,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:54,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 17 [2021-11-23 02:35:54,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:54,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-23 02:35:54,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:54,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:54,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:54,751 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:35:54,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 20 [2021-11-23 02:35:54,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:54,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 90 treesize of output 62 [2021-11-23 02:35:54,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:54,861 INFO L354 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2021-11-23 02:35:54,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 28 [2021-11-23 02:35:54,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:54,898 INFO L354 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2021-11-23 02:35:54,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 28 [2021-11-23 02:35:55,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:55,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-23 02:35:55,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-23 02:35:55,163 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:55,170 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:55,172 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:55,174 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:55,360 INFO L354 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2021-11-23 02:35:55,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 55 [2021-11-23 02:35:55,375 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 02:35:55,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 24 [2021-11-23 02:35:55,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:55,403 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:55,406 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:55,408 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:35:55,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:55,604 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-23 02:35:55,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 225 [2021-11-23 02:35:55,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:55,710 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-23 02:35:55,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 267 treesize of output 259 [2021-11-23 02:35:55,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:55,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 286 [2021-11-23 02:35:55,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:55,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-23 02:35:55,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:55,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:55,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:55,904 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:35:55,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 20 [2021-11-23 02:35:55,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:55,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 147 treesize of output 113 [2021-11-23 02:35:56,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:56,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:56,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:56,026 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:35:56,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 20 [2021-11-23 02:35:56,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:56,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 165 treesize of output 119 [2021-11-23 02:35:56,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:56,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:56,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:56,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:35:56,725 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-23 02:35:56,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 348 treesize of output 338 [2021-11-23 02:35:56,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:56,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:35:56,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:56,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:56,909 INFO L354 Elim1Store]: treesize reduction 124, result has 20.5 percent of original size [2021-11-23 02:35:56,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 case distinctions, treesize of input 338 treesize of output 322 [2021-11-23 02:35:56,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:56,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:35:56,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:56,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:57,049 INFO L354 Elim1Store]: treesize reduction 122, result has 21.8 percent of original size [2021-11-23 02:35:57,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 case distinctions, treesize of input 316 treesize of output 302 [2021-11-23 02:35:57,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:35:57,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 297 treesize of output 281 [2021-11-23 02:35:57,345 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 43 for LOIs [2021-11-23 02:35:57,618 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:36:05,261 WARN L227 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 86 DAG size of output: 73 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:36:12,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [725567293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:36:12,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:36:12,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16, 17] total 41 [2021-11-23 02:36:12,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963583946] [2021-11-23 02:36:12,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:36:12,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 02:36:12,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:12,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 02:36:12,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1832, Unknown=3, NotChecked=86, Total=2070 [2021-11-23 02:36:12,677 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 16 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:36:13,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:13,331 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2021-11-23 02:36:13,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 02:36:13,332 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2021-11-23 02:36:13,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:13,333 INFO L225 Difference]: With dead ends: 39 [2021-11-23 02:36:13,333 INFO L226 Difference]: Without dead ends: 36 [2021-11-23 02:36:13,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=149, Invalid=1832, Unknown=3, NotChecked=86, Total=2070 [2021-11-23 02:36:13,335 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 28 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:13,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 16 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 203 Invalid, 0 Unknown, 31 Unchecked, 0.6s Time] [2021-11-23 02:36:13,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-23 02:36:13,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2021-11-23 02:36:13,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:36:13,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-11-23 02:36:13,346 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 27 [2021-11-23 02:36:13,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:36:13,347 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-11-23 02:36:13,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:36:13,347 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-11-23 02:36:13,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 02:36:13,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:13,349 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:13,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:36:13,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:36:13,565 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:13,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:13,566 INFO L85 PathProgramCache]: Analyzing trace with hash -524443389, now seen corresponding path program 1 times [2021-11-23 02:36:13,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:13,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131122903] [2021-11-23 02:36:13,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:13,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:15,314 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:36:15,315 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:36:15,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131122903] [2021-11-23 02:36:15,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131122903] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:36:15,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253508030] [2021-11-23 02:36:15,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:15,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:36:15,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:36:15,316 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:36:15,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:36:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:15,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 105 conjunts are in the unsatisfiable core [2021-11-23 02:36:15,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:36:15,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:36:15,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-11-23 02:36:15,860 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 02:36:15,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-23 02:36:16,196 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:36:16,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 14 [2021-11-23 02:36:16,516 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-23 02:36:16,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2021-11-23 02:36:16,763 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 02:36:16,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 96 [2021-11-23 02:36:16,836 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-23 02:36:16,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 74 [2021-11-23 02:36:16,874 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-23 02:36:16,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 54 [2021-11-23 02:36:17,393 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 02:36:17,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 139 treesize of output 76 [2021-11-23 02:36:17,403 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 02:36:17,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 49 [2021-11-23 02:36:17,412 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 02:36:17,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 32 [2021-11-23 02:36:23,853 INFO L354 Elim1Store]: treesize reduction 223, result has 11.9 percent of original size [2021-11-23 02:36:23,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 212 treesize of output 219 [2021-11-23 02:36:23,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:36:23,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:36:24,028 INFO L354 Elim1Store]: treesize reduction 316, result has 9.5 percent of original size [2021-11-23 02:36:24,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 191 treesize of output 142 [2021-11-23 02:36:24,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:36:24,082 INFO L354 Elim1Store]: treesize reduction 56, result has 27.3 percent of original size [2021-11-23 02:36:24,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 184 treesize of output 184 [2021-11-23 02:36:24,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:36:24,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:36:24,215 INFO L354 Elim1Store]: treesize reduction 480, result has 8.6 percent of original size [2021-11-23 02:36:24,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 172 treesize of output 169 [2021-11-23 02:36:25,802 INFO L354 Elim1Store]: treesize reduction 456, result has 12.1 percent of original size [2021-11-23 02:36:25,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 329 treesize of output 244 [2021-11-23 02:36:26,088 INFO L354 Elim1Store]: treesize reduction 782, result has 10.4 percent of original size [2021-11-23 02:36:26,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 404 treesize of output 387 [2021-11-23 02:36:26,187 INFO L354 Elim1Store]: treesize reduction 274, result has 8.4 percent of original size [2021-11-23 02:36:26,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 442 treesize of output 353 [2021-11-23 02:36:38,492 INFO L354 Elim1Store]: treesize reduction 232, result has 11.1 percent of original size [2021-11-23 02:36:38,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 351 treesize of output 214 [2021-11-23 02:36:38,606 INFO L354 Elim1Store]: treesize reduction 232, result has 11.1 percent of original size [2021-11-23 02:36:38,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 204 treesize of output 161 [2021-11-23 02:36:38,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 02:36:39,004 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:36:39,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:36:41,050 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_44 Int) (|ULTIMATE.start_dll_append_~new_last~0#1.offset| Int) (v_DerPreprocessor_43 Int)) (= (let ((.cse1 (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8)) (.cse2 (+ |c_ULTIMATE.start_dll_append_~last~0#1.offset| 4))) (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse2 v_DerPreprocessor_44)))) (store .cse0 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse1 v_DerPreprocessor_43))) (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse2 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|)))) (store .cse3 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse3 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse1 |c_ULTIMATE.start_dll_append_~last~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse2 |ULTIMATE.start_dll_append_~new_last~0#1.offset|)))) (store .cse4 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse1 |c_ULTIMATE.start_dll_append_~last~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2021-11-23 02:36:43,109 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_44 Int) (|ULTIMATE.start_dll_append_~new_last~0#1.offset| Int) (v_DerPreprocessor_43 Int) (|v_ULTIMATE.start_dll_append_~last~0#1.offset_14| Int)) (or (= (let ((.cse1 (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8)) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|)) (.cse3 (+ |v_ULTIMATE.start_dll_append_~last~0#1.offset_14| 4))) (select (select (let ((.cse0 (store |c_#memory_int| .cse2 (store (select |c_#memory_int| .cse2) .cse3 v_DerPreprocessor_44)))) (store .cse0 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse1 v_DerPreprocessor_43))) (select (select (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse2 (store (select |c_#memory_$Pointer$.base| .cse2) .cse3 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|)))) (store .cse4 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse1 .cse2))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (let ((.cse5 (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) .cse3 |ULTIMATE.start_dll_append_~new_last~0#1.offset|)))) (store .cse5 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse1 |v_ULTIMATE.start_dll_append_~last~0#1.offset_14|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) |c_ULTIMATE.start_main_~data~0#1|) (< |v_ULTIMATE.start_dll_append_~last~0#1.offset_14| (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|)))) is different from false [2021-11-23 02:37:26,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253508030] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:37:26,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1853627484] [2021-11-23 02:37:26,569 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-23 02:37:26,570 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:37:26,570 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:37:26,570 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:37:26,570 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:37:26,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,639 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:37:26,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:37:26,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 02:37:26,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:37:26,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:37:26,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-23 02:37:26,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-23 02:37:26,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-23 02:37:26,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:37:26,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:37:26,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:37:26,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:37:26,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2021-11-23 02:37:26,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:37:26,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-23 02:37:26,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:26,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:37:26,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-23 02:37:27,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:27,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-23 02:37:27,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:27,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-23 02:37:27,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:37:27,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:37:27,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:37:27,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:27,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-23 02:37:27,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:27,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-23 02:37:27,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:37:27,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:37:27,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:37:27,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:37:27,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:27,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 421 treesize of output 398 [2021-11-23 02:37:27,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:27,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:27,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 398 treesize of output 381 [2021-11-23 02:37:27,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:27,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:37:27,479 INFO L354 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2021-11-23 02:37:27,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 383 treesize of output 372 [2021-11-23 02:37:27,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:27,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:27,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 440 treesize of output 423 [2021-11-23 02:37:27,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:27,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:37:27,571 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-23 02:37:27,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 425 treesize of output 404 [2021-11-23 02:37:27,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:27,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-23 02:37:27,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:27,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:27,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 48 treesize of output 20 [2021-11-23 02:37:27,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:27,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:27,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 58 treesize of output 30 [2021-11-23 02:37:27,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:27,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 312 treesize of output 252 [2021-11-23 02:37:27,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:27,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 340 treesize of output 280 [2021-11-23 02:37:28,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:28,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-23 02:37:28,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:37:28,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:37:28,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:37:28,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:28,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-23 02:37:28,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:37:28,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:28,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-23 02:37:28,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:28,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-23 02:37:28,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:37:28,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:37:28,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:37:28,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:28,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 421 treesize of output 398 [2021-11-23 02:37:28,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:28,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:28,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 398 treesize of output 381 [2021-11-23 02:37:28,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:28,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:28,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 383 treesize of output 366 [2021-11-23 02:37:28,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:28,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:37:28,508 INFO L354 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2021-11-23 02:37:28,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 368 treesize of output 357 [2021-11-23 02:37:28,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:28,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:37:28,586 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-23 02:37:28,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 425 treesize of output 404 [2021-11-23 02:37:28,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:28,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-23 02:37:28,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:28,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 249 treesize of output 231 [2021-11-23 02:37:28,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:28,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:37:28,888 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:37:28,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 45 [2021-11-23 02:37:28,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:28,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 55 treesize of output 23 [2021-11-23 02:37:29,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:29,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 340 treesize of output 288 [2021-11-23 02:37:29,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:37:29,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:37:29,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:37:29,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:37:29,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:29,627 INFO L354 Elim1Store]: treesize reduction 66, result has 29.0 percent of original size [2021-11-23 02:37:29,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 116 treesize of output 104 [2021-11-23 02:37:29,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:37:29,691 INFO L354 Elim1Store]: treesize reduction 76, result has 18.3 percent of original size [2021-11-23 02:37:29,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 98 treesize of output 76 [2021-11-23 02:37:29,767 INFO L354 Elim1Store]: treesize reduction 31, result has 38.0 percent of original size [2021-11-23 02:37:29,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2021-11-23 02:37:29,933 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 43 for LOIs [2021-11-23 02:37:30,126 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:37:40,838 WARN L227 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 86 DAG size of output: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:37:47,688 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1342#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (or (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~last~0#1.base|) (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (and (= |ULTIMATE.start_dll_append_~last~0#1.offset| (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 4)) (= |ULTIMATE.start_dll_append_~last~0#1.base| |ULTIMATE.start_dll_append_~new_last~0#1.base|))) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~count~0#1| 0) (= |ULTIMATE.start_dll_append_~last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~head#1.base|) |ULTIMATE.start_dll_append_~head#1.offset|)) (not (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (<= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (= |ULTIMATE.start_dll_append_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~head#1.base|) |ULTIMATE.start_dll_append_~head#1.offset|)) (<= 0 |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (or (not (= |ULTIMATE.start_dll_append_~last~0#1.offset| 0)) (not (= |ULTIMATE.start_dll_append_~last~0#1.base| 0))) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~new_last~0#1.base|) (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8)) |ULTIMATE.start_dll_append_~last~0#1.base|) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~last~0#1.base|) (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) |ULTIMATE.start_dll_append_~new_last~0#1.base|) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (= |ULTIMATE.start_dll_append_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~new_last~0#1.base|) (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8))) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |#NULL.base| 0))' at error location [2021-11-23 02:37:47,688 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:37:47,689 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:37:47,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 39 [2021-11-23 02:37:47,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484803487] [2021-11-23 02:37:47,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 02:37:47,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-23 02:37:47,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:37:47,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-23 02:37:47,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2982, Unknown=23, NotChecked=222, Total=3422 [2021-11-23 02:37:47,691 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 39 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 30 states have internal predecessors, (40), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 02:37:57,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:57,300 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2021-11-23 02:37:57,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 02:37:57,301 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 30 states have internal predecessors, (40), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 27 [2021-11-23 02:37:57,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:57,303 INFO L225 Difference]: With dead ends: 32 [2021-11-23 02:37:57,303 INFO L226 Difference]: Without dead ends: 30 [2021-11-23 02:37:57,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 82.9s TimeCoverageRelationStatistics Valid=252, Invalid=3637, Unknown=25, NotChecked=246, Total=4160 [2021-11-23 02:37:57,306 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:57,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 183 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 255 Invalid, 0 Unknown, 34 Unchecked, 0.7s Time] [2021-11-23 02:37:57,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-23 02:37:57,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-11-23 02:37:57,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:37:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-11-23 02:37:57,317 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 27 [2021-11-23 02:37:57,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:37:57,318 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-11-23 02:37:57,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 30 states have internal predecessors, (40), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 02:37:57,318 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-11-23 02:37:57,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 02:37:57,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:37:57,319 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:37:57,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:37:57,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:37:57,530 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:37:57,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:37:57,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1478832560, now seen corresponding path program 1 times [2021-11-23 02:37:57,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:37:57,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007950711] [2021-11-23 02:37:57,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:57,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:37:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:37:58,577 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:37:58,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007950711] [2021-11-23 02:37:58,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007950711] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:37:58,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478979435] [2021-11-23 02:37:58,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:58,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:37:58,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:37:58,579 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:37:58,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 02:37:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:58,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-23 02:37:58,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:37:58,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:37:58,987 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:37:58,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:37:59,133 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-23 02:37:59,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 84 [2021-11-23 02:37:59,161 INFO L354 Elim1Store]: treesize reduction 47, result has 16.1 percent of original size [2021-11-23 02:37:59,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 84 [2021-11-23 02:37:59,511 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-23 02:37:59,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 171 treesize of output 78 [2021-11-23 02:37:59,521 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-23 02:37:59,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 44 [2021-11-23 02:37:59,529 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:37:59,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-23 02:38:03,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:38:04,115 INFO L354 Elim1Store]: treesize reduction 412, result has 8.6 percent of original size [2021-11-23 02:38:04,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 223 treesize of output 150 [2021-11-23 02:38:04,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:38:04,290 INFO L354 Elim1Store]: treesize reduction 384, result has 8.8 percent of original size [2021-11-23 02:38:04,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 216 treesize of output 189 [2021-11-23 02:38:04,340 INFO L354 Elim1Store]: treesize reduction 34, result has 44.3 percent of original size [2021-11-23 02:38:04,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 209 treesize of output 211 [2021-11-23 02:38:06,084 INFO L354 Elim1Store]: treesize reduction 498, result has 15.2 percent of original size [2021-11-23 02:38:06,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 8 new quantified variables, introduced 16 case distinctions, treesize of input 282 treesize of output 289 [2021-11-23 02:38:06,612 INFO L354 Elim1Store]: treesize reduction 706, result has 12.3 percent of original size [2021-11-23 02:38:06,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 336 treesize of output 281 [2021-11-23 02:38:27,226 INFO L354 Elim1Store]: treesize reduction 258, result has 23.4 percent of original size [2021-11-23 02:38:27,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 new quantified variables, introduced 21 case distinctions, treesize of input 385 treesize of output 353 [2021-11-23 02:38:47,506 INFO L354 Elim1Store]: treesize reduction 225, result has 25.2 percent of original size [2021-11-23 02:38:47,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 new quantified variables, introduced 21 case distinctions, treesize of input 182 treesize of output 156 [2021-11-23 02:38:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:38:48,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:38:50,358 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_dll_append_~new_last~0#1.offset| Int)) (not (= (let ((.cse2 (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8)) (.cse3 (+ |c_ULTIMATE.start_dll_append_~last~0#1.offset| 4))) (select (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse3 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|)))) (store .cse1 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse1 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse2 |c_ULTIMATE.start_dll_append_~last~0#1.base|))))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (+ (select (select (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse3 |ULTIMATE.start_dll_append_~new_last~0#1.offset|)))) (store .cse4 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse2 |c_ULTIMATE.start_dll_append_~last~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) 0))) is different from false [2021-11-23 02:39:02,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478979435] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:39:02,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1554394217] [2021-11-23 02:39:02,583 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-23 02:39:02,583 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:39:02,584 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:39:02,584 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:39:02,584 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:39:02,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:02,691 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:39:02,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:39:02,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:02,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-23 02:39:02,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:39:02,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:39:02,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:02,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:02,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:02,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-23 02:39:02,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:02,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:02,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:02,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-23 02:39:02,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:02,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:02,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:02,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-23 02:39:02,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:02,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:39:02,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:02,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:39:02,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:02,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:39:02,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:02,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:39:03,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2021-11-23 02:39:03,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:39:03,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-23 02:39:03,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:39:03,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-23 02:39:03,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:39:03,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:39:03,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:39:03,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-23 02:39:03,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-23 02:39:03,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-23 02:39:03,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:39:03,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-23 02:39:03,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:39:03,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:39:03,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:39:03,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 421 treesize of output 398 [2021-11-23 02:39:03,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 398 treesize of output 381 [2021-11-23 02:39:03,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:39:03,625 INFO L354 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2021-11-23 02:39:03,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 383 treesize of output 372 [2021-11-23 02:39:03,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 440 treesize of output 423 [2021-11-23 02:39:03,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:39:03,776 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-23 02:39:03,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 425 treesize of output 404 [2021-11-23 02:39:03,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-23 02:39:03,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:03,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 48 treesize of output 20 [2021-11-23 02:39:04,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:04,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:04,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 48 treesize of output 20 [2021-11-23 02:39:04,105 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:39:04,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:04,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 300 treesize of output 244 [2021-11-23 02:39:04,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:04,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 302 treesize of output 248 [2021-11-23 02:39:04,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:04,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 320 treesize of output 260 [2021-11-23 02:39:04,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:04,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 41 [2021-11-23 02:39:04,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:39:04,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:04,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-23 02:39:04,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:39:04,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:39:04,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:04,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-23 02:39:04,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:04,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-23 02:39:04,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:39:04,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:04,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-11-23 02:39:04,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:39:04,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:39:04,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:39:04,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:04,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 421 treesize of output 398 [2021-11-23 02:39:04,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:04,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:04,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 398 treesize of output 381 [2021-11-23 02:39:04,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:04,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:04,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 383 treesize of output 366 [2021-11-23 02:39:04,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:04,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:39:04,823 INFO L354 Elim1Store]: treesize reduction 58, result has 26.6 percent of original size [2021-11-23 02:39:04,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 368 treesize of output 357 [2021-11-23 02:39:04,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:04,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:39:04,956 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-23 02:39:04,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 425 treesize of output 404 [2021-11-23 02:39:05,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:05,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-23 02:39:05,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:05,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:05,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 48 treesize of output 20 [2021-11-23 02:39:05,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:05,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:05,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 58 treesize of output 30 [2021-11-23 02:39:05,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:05,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 312 treesize of output 252 [2021-11-23 02:39:05,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:05,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 340 treesize of output 280 [2021-11-23 02:39:05,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:39:05,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:39:05,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:39:05,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:39:05,935 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-11-23 02:39:05,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 348 treesize of output 338 [2021-11-23 02:39:05,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:05,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:39:05,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:05,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:06,184 INFO L354 Elim1Store]: treesize reduction 124, result has 20.5 percent of original size [2021-11-23 02:39:06,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 case distinctions, treesize of input 338 treesize of output 322 [2021-11-23 02:39:06,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:06,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:39:06,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:06,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:06,363 INFO L354 Elim1Store]: treesize reduction 122, result has 21.8 percent of original size [2021-11-23 02:39:06,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10 case distinctions, treesize of input 320 treesize of output 306 [2021-11-23 02:39:06,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:06,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 285 [2021-11-23 02:39:06,784 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 43 for LOIs [2021-11-23 02:39:06,983 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:39:15,716 WARN L227 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 86 DAG size of output: 72 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:39:26,739 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1616#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (not (= |ULTIMATE.start_main_~count~0#1| (+ |ULTIMATE.start_main_~len~0#1| 1))) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~ptr~0#1.base| 0) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_dll_create_~len#1|) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2021-11-23 02:39:26,739 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:39:26,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:39:26,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 32 [2021-11-23 02:39:26,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169808545] [2021-11-23 02:39:26,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 02:39:26,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-23 02:39:26,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:39:26,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-23 02:39:26,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2781, Unknown=6, NotChecked=106, Total=3080 [2021-11-23 02:39:26,743 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 32 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-23 02:39:33,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:39:33,543 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2021-11-23 02:39:33,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 02:39:33,544 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 29 [2021-11-23 02:39:33,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:39:33,544 INFO L225 Difference]: With dead ends: 35 [2021-11-23 02:39:33,545 INFO L226 Difference]: Without dead ends: 26 [2021-11-23 02:39:33,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 46.6s TimeCoverageRelationStatistics Valid=259, Invalid=3771, Unknown=6, NotChecked=124, Total=4160 [2021-11-23 02:39:33,547 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:39:33,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 237 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 192 Invalid, 0 Unknown, 72 Unchecked, 0.7s Time] [2021-11-23 02:39:33,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-23 02:39:33,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-11-23 02:39:33,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:39:33,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2021-11-23 02:39:33,556 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 29 [2021-11-23 02:39:33,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:39:33,557 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2021-11-23 02:39:33,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-23 02:39:33,557 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2021-11-23 02:39:33,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 02:39:33,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:39:33,558 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:39:33,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-23 02:39:33,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 02:39:33,761 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:39:33,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:39:33,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1925386736, now seen corresponding path program 1 times [2021-11-23 02:39:33,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:39:33,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184869136] [2021-11-23 02:39:33,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:33,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:39:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:39:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:39:34,885 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:39:34,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184869136] [2021-11-23 02:39:34,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184869136] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:39:34,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445240311] [2021-11-23 02:39:34,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:34,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:39:34,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:39:34,886 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:39:34,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 02:39:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:39:34,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-23 02:39:34,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:39:35,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-23 02:39:39,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:39,500 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-11-23 02:39:39,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 30 [2021-11-23 02:39:40,438 INFO L354 Elim1Store]: treesize reduction 279, result has 20.5 percent of original size [2021-11-23 02:39:40,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 74 treesize of output 99 [2021-11-23 02:39:44,242 INFO L354 Elim1Store]: treesize reduction 96, result has 31.9 percent of original size [2021-11-23 02:39:44,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 121 treesize of output 106 [2021-11-23 02:39:44,260 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:39:44,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:39:48,664 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_node_create_~temp~0#1.offset_35| Int) (|ULTIMATE.start_dll_append_~last~0#1.offset| Int) (|ULTIMATE.start_dll_append_~last~0#1.base| Int) (|ULTIMATE.start_dll_append_~new_last~0#1.offset| Int) (|v_node_create_~temp~0#1.base_35| Int) (v_DerPreprocessor_65 Int)) (let ((.cse3 (store |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_35| (store (store (store (select |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_35|) (+ |v_node_create_~temp~0#1.offset_35| 4) 0) (+ |v_node_create_~temp~0#1.offset_35| 8) 0) |v_node_create_~temp~0#1.offset_35| v_DerPreprocessor_65)))) (let ((.cse0 (select .cse3 |ULTIMATE.start_dll_append_~last~0#1.base|)) (.cse1 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4))) (or (<= |c_#StackHeapBarrier| |v_node_create_~temp~0#1.base_35|) (not (= (select .cse0 .cse1) 0)) (not (= (select (select (let ((.cse2 (store .cse3 |ULTIMATE.start_dll_append_~last~0#1.base| (store .cse0 .cse1 |v_node_create_~temp~0#1.base_35|)))) (store .cse2 |v_node_create_~temp~0#1.base_35| (store (select .cse2 |v_node_create_~temp~0#1.base_35|) (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8) |ULTIMATE.start_dll_append_~last~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 0)))))) is different from false [2021-11-23 02:39:48,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445240311] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:39:48,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [287789345] [2021-11-23 02:39:48,675 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-23 02:39:48,675 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:39:48,676 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:39:48,676 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:39:48,676 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:39:48,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:48,745 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:39:48,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-23 02:39:48,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:48,815 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:39:48,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:39:48,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:39:48,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:39:48,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:48,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:48,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:48,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-23 02:39:48,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:48,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:48,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:48,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-23 02:39:48,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:48,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:48,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:48,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-23 02:39:48,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:48,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:39:48,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:48,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:39:49,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:39:49,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:39:49,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:39:49,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 416 treesize of output 393 [2021-11-23 02:39:49,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:39:49,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:39:49,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 393 treesize of output 376 [2021-11-23 02:39:49,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:39:49,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:39:49,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 382 treesize of output 266 [2021-11-23 02:39:49,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 126 [2021-11-23 02:39:49,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 113 [2021-11-23 02:39:49,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:39:49,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:39:49,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:39:49,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:39:49,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:39:49,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:39:49,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:39:49,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:39:49,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:39:49,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:39:49,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,629 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-23 02:39:49,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 225 [2021-11-23 02:39:49,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,752 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-23 02:39:49,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 267 treesize of output 253 [2021-11-23 02:39:49,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 286 [2021-11-23 02:39:49,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 17 [2021-11-23 02:39:49,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-23 02:39:49,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,957 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:39:49,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 20 [2021-11-23 02:39:49,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:49,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 147 treesize of output 113 [2021-11-23 02:39:50,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:50,057 INFO L354 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2021-11-23 02:39:50,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 28 [2021-11-23 02:39:50,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:39:50,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-23 02:39:50,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-23 02:39:50,408 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:39:50,410 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:39:50,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:39:50,692 INFO L354 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2021-11-23 02:39:50,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 106 [2021-11-23 02:39:50,708 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 02:39:50,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 69 [2021-11-23 02:39:50,742 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:39:50,743 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:39:50,746 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:39:50,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:50,901 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-23 02:39:50,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 225 [2021-11-23 02:39:50,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:51,093 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-23 02:39:51,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 267 treesize of output 259 [2021-11-23 02:39:51,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:51,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 286 [2021-11-23 02:39:51,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:51,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-23 02:39:51,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:51,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:51,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:51,293 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:39:51,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 20 [2021-11-23 02:39:51,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:51,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 90 treesize of output 62 [2021-11-23 02:39:51,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:51,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:51,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:51,400 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:39:51,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 20 [2021-11-23 02:39:51,432 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:39:51,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:39:51,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 108 treesize of output 68 [2021-11-23 02:39:51,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:39:51,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:39:51,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:39:51,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:39:51,910 INFO L354 Elim1Store]: treesize reduction 31, result has 38.0 percent of original size [2021-11-23 02:39:51,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2021-11-23 02:39:51,961 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-23 02:39:51,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-11-23 02:39:52,057 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-23 02:39:52,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2021-11-23 02:39:52,239 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 43 for LOIs [2021-11-23 02:39:52,480 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:40:01,221 WARN L227 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 86 DAG size of output: 72 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:40:04,361 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1887#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (or (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~last~0#1.base|) (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (and (= |ULTIMATE.start_dll_append_~last~0#1.offset| (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 4)) (= |ULTIMATE.start_dll_append_~last~0#1.base| |ULTIMATE.start_dll_append_~new_last~0#1.base|))) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~count~0#1| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| 0) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~new_last~0#1.base|) (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8)) |ULTIMATE.start_dll_append_~last~0#1.base|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~last~0#1.base|) (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) |ULTIMATE.start_dll_append_~new_last~0#1.base|) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (= |ULTIMATE.start_dll_append_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~new_last~0#1.base|) (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8))) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2021-11-23 02:40:04,361 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:40:04,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:40:04,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 25 [2021-11-23 02:40:04,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875733540] [2021-11-23 02:40:04,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 02:40:04,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 02:40:04,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:40:04,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 02:40:04,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1574, Unknown=2, NotChecked=80, Total=1806 [2021-11-23 02:40:04,364 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 25 states, 20 states have (on average 1.65) internal successors, (33), 21 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 02:40:11,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:40:11,568 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-11-23 02:40:11,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 02:40:11,569 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 1.65) internal successors, (33), 21 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2021-11-23 02:40:11,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:40:11,570 INFO L225 Difference]: With dead ends: 34 [2021-11-23 02:40:11,571 INFO L226 Difference]: Without dead ends: 31 [2021-11-23 02:40:11,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=224, Invalid=2227, Unknown=3, NotChecked=96, Total=2550 [2021-11-23 02:40:11,573 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:40:11,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 118 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 48 Unchecked, 0.3s Time] [2021-11-23 02:40:11,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-23 02:40:11,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2021-11-23 02:40:11,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:40:11,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-11-23 02:40:11,584 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 29 [2021-11-23 02:40:11,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:40:11,585 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-11-23 02:40:11,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 1.65) internal successors, (33), 21 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 02:40:11,585 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-11-23 02:40:11,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 02:40:11,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:40:11,586 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:40:11,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-23 02:40:11,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:40:11,801 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:40:11,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:40:11,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1925442722, now seen corresponding path program 1 times [2021-11-23 02:40:11,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:40:11,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41230564] [2021-11-23 02:40:11,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:40:11,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:40:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:40:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:40:15,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:40:15,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41230564] [2021-11-23 02:40:15,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41230564] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:40:15,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121558962] [2021-11-23 02:40:15,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:40:15,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:40:15,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:40:15,043 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:40:15,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 02:40:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:40:15,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 117 conjunts are in the unsatisfiable core [2021-11-23 02:40:15,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:40:15,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:40:15,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-11-23 02:40:15,732 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:40:15,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 02:40:16,225 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:40:16,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2021-11-23 02:40:16,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:40:16,718 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 02:40:16,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 case distinctions, treesize of input 22 treesize of output 33 [2021-11-23 02:40:17,123 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 02:40:17,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 111 [2021-11-23 02:40:17,167 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-23 02:40:17,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 127 [2021-11-23 02:40:17,239 INFO L354 Elim1Store]: treesize reduction 116, result has 11.5 percent of original size [2021-11-23 02:40:17,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 144 treesize of output 85 [2021-11-23 02:40:17,982 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 02:40:17,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 151 treesize of output 80 [2021-11-23 02:40:17,994 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 02:40:17,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 53 [2021-11-23 02:40:18,007 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 02:40:18,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 36 [2021-11-23 02:40:24,722 INFO L354 Elim1Store]: treesize reduction 223, result has 11.9 percent of original size [2021-11-23 02:40:24,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 224 treesize of output 231 [2021-11-23 02:40:24,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:40:24,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:40:24,947 INFO L354 Elim1Store]: treesize reduction 316, result has 9.5 percent of original size [2021-11-23 02:40:24,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 203 treesize of output 146 [2021-11-23 02:40:24,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:40:24,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:40:25,130 INFO L354 Elim1Store]: treesize reduction 480, result has 8.6 percent of original size [2021-11-23 02:40:25,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 196 treesize of output 193 [2021-11-23 02:40:25,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:40:25,188 INFO L354 Elim1Store]: treesize reduction 56, result has 27.3 percent of original size [2021-11-23 02:40:25,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 189 treesize of output 189 [2021-11-23 02:40:27,988 INFO L354 Elim1Store]: treesize reduction 668, result has 9.2 percent of original size [2021-11-23 02:40:27,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 22 case distinctions, treesize of input 454 treesize of output 249 [2021-11-23 02:40:28,365 INFO L354 Elim1Store]: treesize reduction 614, result has 11.7 percent of original size [2021-11-23 02:40:28,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 341 treesize of output 326 [2021-11-23 02:40:28,470 INFO L354 Elim1Store]: treesize reduction 198, result has 14.3 percent of original size [2021-11-23 02:40:28,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 368 treesize of output 317 [2021-11-23 02:40:40,870 INFO L354 Elim1Store]: treesize reduction 274, result has 11.3 percent of original size [2021-11-23 02:40:40,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 303 treesize of output 216 [2021-11-23 02:40:41,072 INFO L354 Elim1Store]: treesize reduction 234, result has 10.3 percent of original size [2021-11-23 02:40:41,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 198 treesize of output 162 [2021-11-23 02:40:41,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 02:40:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:40:41,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:40:43,959 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_79 Int) (|ULTIMATE.start_dll_append_~last~0#1.offset| Int) (|ULTIMATE.start_dll_append_~new_last~0#1.offset| Int) (v_DerPreprocessor_80 Int)) (= (let ((.cse1 (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8)) (.cse2 (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4))) (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse2 v_DerPreprocessor_80)))) (store .cse0 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse1 v_DerPreprocessor_79))) (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse2 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|)))) (store .cse3 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse3 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse1 |c_ULTIMATE.start_dll_append_~last~0#1.base|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_append_~last~0#1.base|) .cse2 |ULTIMATE.start_dll_append_~new_last~0#1.offset|)))) (store .cse4 |c_ULTIMATE.start_dll_append_~new_last~0#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_append_~new_last~0#1.base|) .cse1 |ULTIMATE.start_dll_append_~last~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2021-11-23 02:43:20,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121558962] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:43:20,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1954981583] [2021-11-23 02:43:20,897 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-23 02:43:20,898 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:43:20,898 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:43:20,898 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:43:20,898 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:43:20,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:20,979 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 02:43:20,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 17 treesize of output 26 [2021-11-23 02:43:20,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,056 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 02:43:21,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-23 02:43:21,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:43:21,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:43:21,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-23 02:43:21,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-23 02:43:21,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-23 02:43:21,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:43:21,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:43:21,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-23 02:43:21,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-23 02:43:21,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:21,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 416 treesize of output 393 [2021-11-23 02:43:21,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:21,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:21,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 393 treesize of output 376 [2021-11-23 02:43:21,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,548 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-23 02:43:21,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 382 treesize of output 363 [2021-11-23 02:43:21,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:21,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:21,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 441 treesize of output 325 [2021-11-23 02:43:21,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:21,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:21,614 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-23 02:43:21,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 270 treesize of output 257 [2021-11-23 02:43:21,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 38 treesize of output 16 [2021-11-23 02:43:21,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:43:21,712 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:43:21,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 28 [2021-11-23 02:43:21,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:43:21,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:43:21,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:43:21,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:43:21,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:43:21,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:43:21,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:43:21,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:43:21,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:21,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 02:43:21,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:43:21,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:22,081 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-23 02:43:22,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 225 [2021-11-23 02:43:22,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:22,176 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-23 02:43:22,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 267 treesize of output 253 [2021-11-23 02:43:22,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:22,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 286 [2021-11-23 02:43:22,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:22,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-23 02:43:22,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:22,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:22,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:22,321 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:43:22,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 20 [2021-11-23 02:43:22,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:22,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 90 treesize of output 62 [2021-11-23 02:43:22,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:22,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:22,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:22,433 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:43:22,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 20 [2021-11-23 02:43:22,452 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:43:22,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:22,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 108 treesize of output 68 [2021-11-23 02:43:22,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-23 02:43:22,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-23 02:43:22,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:43:22,660 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:43:22,662 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:43:22,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-23 02:43:22,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:43:22,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-23 02:43:22,827 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:43:22,829 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:43:22,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:22,990 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-23 02:43:22,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 225 [2021-11-23 02:43:23,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:23,095 INFO L354 Elim1Store]: treesize reduction 86, result has 16.5 percent of original size [2021-11-23 02:43:23,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 267 treesize of output 259 [2021-11-23 02:43:23,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:23,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 286 [2021-11-23 02:43:23,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:23,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 17 [2021-11-23 02:43:23,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:23,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 17 [2021-11-23 02:43:23,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:23,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 11 [2021-11-23 02:43:23,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:23,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:23,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:23,291 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:43:23,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 41 [2021-11-23 02:43:23,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:23,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:23,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:23,326 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 02:43:23,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 41 [2021-11-23 02:43:23,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:23,375 INFO L354 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2021-11-23 02:43:23,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 28 [2021-11-23 02:43:23,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:43:23,403 INFO L354 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2021-11-23 02:43:23,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 28 [2021-11-23 02:43:23,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:43:23,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:43:23,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:43:23,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 02:43:23,798 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-23 02:43:23,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2021-11-23 02:43:23,881 INFO L354 Elim1Store]: treesize reduction 31, result has 38.0 percent of original size [2021-11-23 02:43:23,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2021-11-23 02:43:23,937 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-23 02:43:23,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-11-23 02:43:24,092 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 43 for LOIs [2021-11-23 02:43:24,313 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:43:35,596 WARN L227 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 86 DAG size of output: 72 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:43:39,859 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2174#(and (<= 1 |ULTIMATE.start_dll_create_~data#1|) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_create_#in~len#1|) (<= |ULTIMATE.start_dll_append_~data#1| 1) (<= |ULTIMATE.start_dll_create_#res#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= |ULTIMATE.start_dll_append_~head#1.offset| 0) (or (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~last~0#1.base|) (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) |ULTIMATE.start_dll_append_~new_last~0#1.offset|) (and (= |ULTIMATE.start_dll_append_~last~0#1.offset| (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 4)) (= |ULTIMATE.start_dll_append_~last~0#1.base| |ULTIMATE.start_dll_append_~new_last~0#1.base|))) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_dll_append_#in~head#1.offset|) (= |ULTIMATE.start_dll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~data#1| 1) (= |ULTIMATE.start_main_~count~0#1| 0) (not (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_append_#in~data#1|) (<= |ULTIMATE.start_dll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= |ULTIMATE.start_dll_create_~len#1| 0) (<= 1 |ULTIMATE.start_dll_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~new_last~0#1.base|) (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8)) |ULTIMATE.start_dll_append_~last~0#1.base|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_dll_append_~head#1.offset|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_append_#in~head#1.offset| 0) (<= |ULTIMATE.start_dll_create_~head~0#1.offset| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_append_~last~0#1.base|) (+ |ULTIMATE.start_dll_append_~last~0#1.offset| 4)) |ULTIMATE.start_dll_append_~new_last~0#1.base|) (<= 1 |ULTIMATE.start_dll_append_~data#1|) (<= 0 |ULTIMATE.start_dll_create_~head~0#1.offset|) (= |ULTIMATE.start_dll_append_~last~0#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_append_~new_last~0#1.base|) (+ |ULTIMATE.start_dll_append_~new_last~0#1.offset| 8))) (<= 0 |ULTIMATE.start_dll_append_~head#1.base|) (<= |ULTIMATE.start_dll_append_#in~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_create_#res#1.offset|) (= |#NULL.base| 0))' at error location [2021-11-23 02:43:39,859 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:43:39,859 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:43:39,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22] total 44 [2021-11-23 02:43:39,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599326902] [2021-11-23 02:43:39,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 02:43:39,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-23 02:43:39,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:43:39,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-23 02:43:39,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=3751, Unknown=62, NotChecked=124, Total=4160 [2021-11-23 02:43:39,863 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 44 states, 36 states have (on average 1.25) internal successors, (45), 35 states have internal predecessors, (45), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 02:43:52,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:43:52,357 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2021-11-23 02:43:52,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 02:43:52,358 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 36 states have (on average 1.25) internal successors, (45), 35 states have internal predecessors, (45), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 29 [2021-11-23 02:43:52,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:43:52,359 INFO L225 Difference]: With dead ends: 35 [2021-11-23 02:43:52,360 INFO L226 Difference]: Without dead ends: 33 [2021-11-23 02:43:52,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1242 ImplicationChecksByTransitivity, 198.0s TimeCoverageRelationStatistics Valid=304, Invalid=4892, Unknown=64, NotChecked=142, Total=5402 [2021-11-23 02:43:52,363 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:43:52,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 202 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 286 Invalid, 0 Unknown, 50 Unchecked, 1.0s Time] [2021-11-23 02:43:52,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-23 02:43:52,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-11-23 02:43:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:43:52,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2021-11-23 02:43:52,375 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 29 [2021-11-23 02:43:52,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:43:52,376 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2021-11-23 02:43:52,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 36 states have (on average 1.25) internal successors, (45), 35 states have internal predecessors, (45), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 02:43:52,377 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2021-11-23 02:43:52,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 02:43:52,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:43:52,378 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:43:52,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 02:43:52,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:52,605 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:43:52,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:43:52,605 INFO L85 PathProgramCache]: Analyzing trace with hash 780539371, now seen corresponding path program 1 times [2021-11-23 02:43:52,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:43:52,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562693284] [2021-11-23 02:43:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:52,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:43:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:43:55,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:43:55,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562693284] [2021-11-23 02:43:55,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562693284] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:43:55,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794698607] [2021-11-23 02:43:55,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:43:55,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:43:55,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:43:55,764 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:43:55,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a23a79d0-2c61-4558-baec-cdd93bc848ba/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 02:43:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:43:55,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 80 conjunts are in the unsatisfiable core [2021-11-23 02:43:55,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:43:55,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:43:55,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-11-23 02:43:56,308 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 02:43:56,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-23 02:43:56,655 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:43:56,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 14 [2021-11-23 02:43:57,111 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-23 02:43:57,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 case distinctions, treesize of input 22 treesize of output 33 [2021-11-23 02:43:57,411 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 02:43:57,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 78 [2021-11-23 02:43:57,454 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-23 02:43:57,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 90 [2021-11-23 02:43:57,992 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-23 02:43:57,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 136 treesize of output 73 [2021-11-23 02:43:58,002 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-23 02:43:58,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 46 [2021-11-23 02:43:58,016 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 02:43:58,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 29 [2021-11-23 02:44:04,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:04,807 INFO L354 Elim1Store]: treesize reduction 328, result has 9.1 percent of original size [2021-11-23 02:44:04,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 188 treesize of output 139 [2021-11-23 02:44:04,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:04,881 INFO L354 Elim1Store]: treesize reduction 56, result has 27.3 percent of original size [2021-11-23 02:44:04,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 181 treesize of output 181 [2021-11-23 02:44:04,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:44:05,054 INFO L354 Elim1Store]: treesize reduction 496, result has 8.3 percent of original size [2021-11-23 02:44:05,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 169 treesize of output 166 [2021-11-23 02:44:07,583 INFO L354 Elim1Store]: treesize reduction 538, result has 12.2 percent of original size [2021-11-23 02:44:07,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 242 treesize of output 211 [2021-11-23 02:44:08,063 INFO L354 Elim1Store]: treesize reduction 718, result has 15.0 percent of original size [2021-11-23 02:44:08,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 6 new quantified variables, introduced 16 case distinctions, treesize of input 307 treesize of output 350 [2021-11-23 02:44:18,080 INFO L354 Elim1Store]: treesize reduction 696, result has 16.4 percent of original size [2021-11-23 02:44:18,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 45 case distinctions, treesize of input 472 treesize of output 472