./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI --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 9d8386495cfc7d925686020c12a2509d702f4bf2aed1f5dea2d7da468cac3b6e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:28:23,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:28:23,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:28:23,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:28:23,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:28:23,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:28:23,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:28:23,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:28:23,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:28:23,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:28:23,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:28:23,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:28:23,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:28:23,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:28:23,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:28:23,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:28:23,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:28:23,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:28:23,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:28:23,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:28:23,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:28:23,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:28:23,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:28:23,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:28:23,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:28:23,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:28:23,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:28:23,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:28:23,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:28:23,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:28:23,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:28:23,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:28:23,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:28:23,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:28:23,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:28:23,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:28:23,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:28:23,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:28:23,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:28:23,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:28:23,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:28:23,148 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:28:23,176 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:28:23,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:28:23,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:28:23,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:28:23,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:28:23,179 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:28:23,179 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:28:23,179 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:28:23,180 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:28:23,180 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:28:23,180 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:28:23,180 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:28:23,181 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:28:23,181 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:28:23,181 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:28:23,182 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:28:23,182 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:28:23,182 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:28:23,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:28:23,184 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:28:23,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:28:23,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:28:23,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:28:23,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:28:23,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:28:23,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:28:23,186 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:28:23,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:28:23,187 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:28:23,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:28:23,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:28:23,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:28:23,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:28:23,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:28:23,189 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:28:23,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:28:23,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:28:23,190 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:28:23,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:28:23,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:28:23,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:28:23,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d8386495cfc7d925686020c12a2509d702f4bf2aed1f5dea2d7da468cac3b6e [2022-11-03 03:28:23,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:28:23,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:28:23,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:28:23,579 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:28:23,581 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:28:23,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i [2022-11-03 03:28:23,673 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/data/6dc5e34bf/5d7fe12604274cc38508d5cc283c3691/FLAG712272818 [2022-11-03 03:28:24,286 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:28:24,287 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i [2022-11-03 03:28:24,301 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/data/6dc5e34bf/5d7fe12604274cc38508d5cc283c3691/FLAG712272818 [2022-11-03 03:28:24,552 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/data/6dc5e34bf/5d7fe12604274cc38508d5cc283c3691 [2022-11-03 03:28:24,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:28:24,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:28:24,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:28:24,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:28:24,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:28:24,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:28:24" (1/1) ... [2022-11-03 03:28:24,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e3d2f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:24, skipping insertion in model container [2022-11-03 03:28:24,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:28:24" (1/1) ... [2022-11-03 03:28:24,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:28:24,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:28:25,019 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_607f8108-bd39-413d-8347-c74ec8dcc32e/sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i[22778,22791] [2022-11-03 03:28:25,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:28:25,036 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:28:25,081 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_607f8108-bd39-413d-8347-c74ec8dcc32e/sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i[22778,22791] [2022-11-03 03:28:25,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:28:25,110 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:28:25,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:25 WrapperNode [2022-11-03 03:28:25,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:28:25,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:28:25,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:28:25,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:28:25,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:25" (1/1) ... [2022-11-03 03:28:25,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:25" (1/1) ... [2022-11-03 03:28:25,163 INFO L138 Inliner]: procedures = 119, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 118 [2022-11-03 03:28:25,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:28:25,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:28:25,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:28:25,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:28:25,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:25" (1/1) ... [2022-11-03 03:28:25,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:25" (1/1) ... [2022-11-03 03:28:25,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:25" (1/1) ... [2022-11-03 03:28:25,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:25" (1/1) ... [2022-11-03 03:28:25,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:25" (1/1) ... [2022-11-03 03:28:25,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:25" (1/1) ... [2022-11-03 03:28:25,195 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:25" (1/1) ... [2022-11-03 03:28:25,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:25" (1/1) ... [2022-11-03 03:28:25,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:28:25,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:28:25,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:28:25,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:28:25,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:25" (1/1) ... [2022-11-03 03:28:25,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:28:25,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:28:25,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:28:25,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:28:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:28:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:28:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:28:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:28:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:28:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:28:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:28:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:28:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:28:25,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:28:25,469 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:28:25,472 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:28:25,828 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:28:25,894 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:28:25,895 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-03 03:28:25,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:28:25 BoogieIcfgContainer [2022-11-03 03:28:25,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:28:25,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:28:25,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:28:25,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:28:25,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:28:24" (1/3) ... [2022-11-03 03:28:25,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45261f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:28:25, skipping insertion in model container [2022-11-03 03:28:25,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:25" (2/3) ... [2022-11-03 03:28:25,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45261f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:28:25, skipping insertion in model container [2022-11-03 03:28:25,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:28:25" (3/3) ... [2022-11-03 03:28:25,913 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue-2.i [2022-11-03 03:28:25,945 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:28:25,945 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:28:26,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:28:26,019 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7cba9e85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:28:26,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:28:26,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:26,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 03:28:26,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:26,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:26,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:26,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:26,063 INFO L85 PathProgramCache]: Analyzing trace with hash 547566873, now seen corresponding path program 1 times [2022-11-03 03:28:26,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:26,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22454269] [2022-11-03 03:28:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:26,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:26,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:26,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:26,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22454269] [2022-11-03 03:28:26,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22454269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:26,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:26,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:28:26,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785664267] [2022-11-03 03:28:26,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:26,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:28:26,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:26,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:28:26,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:28:26,500 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:26,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:26,587 INFO L93 Difference]: Finished difference Result 38 states and 59 transitions. [2022-11-03 03:28:26,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:28:26,590 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 03:28:26,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:26,602 INFO L225 Difference]: With dead ends: 38 [2022-11-03 03:28:26,602 INFO L226 Difference]: Without dead ends: 18 [2022-11-03 03:28:26,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:28:26,611 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:26,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:28:26,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-03 03:28:26,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-03 03:28:26,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-11-03 03:28:26,658 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 10 [2022-11-03 03:28:26,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:26,659 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-11-03 03:28:26,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:26,661 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-11-03 03:28:26,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 03:28:26,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:26,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:26,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:28:26,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:26,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:26,665 INFO L85 PathProgramCache]: Analyzing trace with hash 339951912, now seen corresponding path program 1 times [2022-11-03 03:28:26,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:26,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508131371] [2022-11-03 03:28:26,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:26,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:27,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:27,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508131371] [2022-11-03 03:28:27,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508131371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:27,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:27,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:28:27,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813837341] [2022-11-03 03:28:27,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:27,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:28:27,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:27,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:28:27,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:28:27,668 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:28,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:28,171 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2022-11-03 03:28:28,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:28:28,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 03:28:28,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:28,175 INFO L225 Difference]: With dead ends: 50 [2022-11-03 03:28:28,175 INFO L226 Difference]: Without dead ends: 48 [2022-11-03 03:28:28,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:28:28,178 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 36 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:28,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 60 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:28:28,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-03 03:28:28,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 28. [2022-11-03 03:28:28,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:28,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-11-03 03:28:28,188 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 12 [2022-11-03 03:28:28,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:28,189 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-11-03 03:28:28,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:28,189 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-11-03 03:28:28,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 03:28:28,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:28,190 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:28,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:28:28,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:28,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:28,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1779401325, now seen corresponding path program 1 times [2022-11-03 03:28:28,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:28,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562046524] [2022-11-03 03:28:28,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:28,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:28,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:28,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:28,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562046524] [2022-11-03 03:28:28,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562046524] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:28:28,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943107680] [2022-11-03 03:28:28,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:28,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:28:28,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:28:28,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:28:28,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:28:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:28,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 03:28:28,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:28:29,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-03 03:28:29,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-03 03:28:29,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:29,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:28:29,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943107680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:29,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:28:29,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-11-03 03:28:29,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451799689] [2022-11-03 03:28:29,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:29,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:28:29,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:29,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:28:29,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:28:29,111 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:29,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:29,315 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-11-03 03:28:29,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:28:29,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 03:28:29,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:29,317 INFO L225 Difference]: With dead ends: 45 [2022-11-03 03:28:29,317 INFO L226 Difference]: Without dead ends: 37 [2022-11-03 03:28:29,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:28:29,319 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:29,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 56 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:28:29,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-03 03:28:29,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2022-11-03 03:28:29,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:29,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-11-03 03:28:29,329 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 14 [2022-11-03 03:28:29,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:29,329 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-11-03 03:28:29,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:29,330 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2022-11-03 03:28:29,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 03:28:29,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:29,331 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:29,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:28:29,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:28:29,559 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:29,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:29,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1032126435, now seen corresponding path program 1 times [2022-11-03 03:28:29,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:29,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928804066] [2022-11-03 03:28:29,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:29,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:30,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:30,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:30,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928804066] [2022-11-03 03:28:30,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928804066] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:28:30,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814648402] [2022-11-03 03:28:30,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:30,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:28:30,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:28:30,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:28:30,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:28:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:30,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-03 03:28:30,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:28:30,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:28:30,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:28:30,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:30,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 44 [2022-11-03 03:28:30,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-03 03:28:30,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 39 [2022-11-03 03:28:30,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:30,825 INFO L356 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-03 03:28:30,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 69 [2022-11-03 03:28:30,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 30 [2022-11-03 03:28:30,872 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 03:28:30,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 03:28:31,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:31,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-03 03:28:31,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:31,171 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-03 03:28:31,190 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-03 03:28:31,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:28:31,226 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 03:28:31,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 41 [2022-11-03 03:28:31,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 03:28:31,388 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-03 03:28:31,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 03:28:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:31,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:28:31,515 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_327 (Array Int Int)) (|v_ULTIMATE.start_main_~head~0#1.base_14| Int)) (or (not (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~head~0#1.base_14| v_ArrVal_327) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8)) 1)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~head~0#1.base_14|) 0)))) is different from false [2022-11-03 03:28:31,597 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:28:31,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 43 [2022-11-03 03:28:31,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 79 [2022-11-03 03:28:31,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 61 [2022-11-03 03:28:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-03 03:28:31,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814648402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:28:31,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1823847714] [2022-11-03 03:28:31,901 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-03 03:28:31,902 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:28:31,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:28:31,914 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:28:31,915 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:28:31,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:31,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:31,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-03 03:28:32,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,042 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 03:28:32,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 50 [2022-11-03 03:28:32,091 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 03:28:32,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-03 03:28:32,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,108 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-03 03:28:32,154 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 03:28:32,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 03:28:32,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:32,392 INFO L356 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-03 03:28:32,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 33 [2022-11-03 03:28:32,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 33 [2022-11-03 03:28:32,586 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 03:28:32,587 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 03:28:32,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 40 [2022-11-03 03:28:32,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2022-11-03 03:28:32,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2022-11-03 03:28:32,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2022-11-03 03:28:32,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-03 03:28:32,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:32,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:33,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:33,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:33,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:33,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:33,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:33,615 INFO L356 Elim1Store]: treesize reduction 54, result has 40.0 percent of original size [2022-11-03 03:28:33,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 8 case distinctions, treesize of input 383 treesize of output 337 [2022-11-03 03:28:33,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:33,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:33,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:34,162 INFO L356 Elim1Store]: treesize reduction 150, result has 20.2 percent of original size [2022-11-03 03:28:34,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 534 treesize of output 434 [2022-11-03 03:28:34,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:34,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:34,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:34,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:34,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:34,458 INFO L356 Elim1Store]: treesize reduction 307, result has 13.8 percent of original size [2022-11-03 03:28:34,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 410 treesize of output 368 [2022-11-03 03:28:34,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:34,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:34,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:34,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:34,549 INFO L356 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-03 03:28:34,550 INFO L390 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 6 case distinctions, treesize of input 389 treesize of output 352 [2022-11-03 03:28:34,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:34,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:34,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:34,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:34,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:34,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:34,621 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-03 03:28:34,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 369 treesize of output 352 [2022-11-03 03:28:34,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:34,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:34,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:34,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:34,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:34,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:34,661 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:34,700 INFO L356 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2022-11-03 03:28:34,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 374 treesize of output 361 [2022-11-03 03:28:34,744 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:34,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:34,801 INFO L356 Elim1Store]: treesize reduction 142, result has 11.8 percent of original size [2022-11-03 03:28:34,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 409 treesize of output 389 [2022-11-03 03:28:34,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:34,923 INFO L356 Elim1Store]: treesize reduction 94, result has 14.5 percent of original size [2022-11-03 03:28:34,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 360 treesize of output 365 [2022-11-03 03:28:34,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:35,023 INFO L356 Elim1Store]: treesize reduction 138, result has 10.4 percent of original size [2022-11-03 03:28:35,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 365 treesize of output 369 [2022-11-03 03:28:35,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:35,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:35,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:35,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:35,468 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 18 [2022-11-03 03:28:35,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:28:35,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:35,625 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 03:28:35,626 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 116 [2022-11-03 03:28:35,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:35,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:35,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:35,721 INFO L356 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2022-11-03 03:28:35,722 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 22 [2022-11-03 03:28:35,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:35,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 15 [2022-11-03 03:28:35,777 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 03:28:35,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 81 [2022-11-03 03:28:35,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:35,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-03 03:28:35,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:28:35,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:35,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:35,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-03 03:28:35,875 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:28:35,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:35,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:35,901 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:35,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-03 03:28:35,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:28:35,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:35,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:35,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-03 03:28:36,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:36,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:36,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:36,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:36,240 INFO L356 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2022-11-03 03:28:36,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 18 [2022-11-03 03:28:36,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:36,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:36,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:36,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:36,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 22 [2022-11-03 03:28:36,365 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 03:28:36,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 100 [2022-11-03 03:28:36,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:36,404 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-03 03:28:36,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 70 [2022-11-03 03:28:36,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:36,427 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 15 [2022-11-03 03:28:36,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:36,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-03 03:28:36,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:28:36,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:28:36,478 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:28:37,371 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '460#(and (= 1 (select (select |#memory_int| |ULTIMATE.start_main_~head~0#1.base|) (+ |ULTIMATE.start_main_~head~0#1.offset| 8))) (< |ULTIMATE.start_main_~head~0#1.base| |#StackHeapBarrier|) (not (= |ULTIMATE.start_main_~head~0#1.base| 0)) (= (select |#length| |ULTIMATE.start_main_~head~0#1.base|) 12) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ 8 |ULTIMATE.start_main_~x~0#1.offset|)) 1) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) (+ |ULTIMATE.start_main_~head~0#1.offset| 4)) 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) |ULTIMATE.start_main_~x~0#1.offset|) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) (+ |ULTIMATE.start_main_~head~0#1.offset| 4)) 0) (= (select |#valid| |ULTIMATE.start_main_~head~0#1.base|) 1) (= |#NULL.offset| 0) (not (= |ULTIMATE.start_main_~x~0#1.base| 0)) (= |ULTIMATE.start_main_~x~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|)) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 0) (= |#NULL.base| 0))' at error location [2022-11-03 03:28:37,371 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:28:37,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:28:37,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-03 03:28:37,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236688337] [2022-11-03 03:28:37,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:28:37,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:28:37,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:37,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:28:37,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=443, Unknown=2, NotChecked=42, Total=552 [2022-11-03 03:28:37,374 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:38,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:38,003 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2022-11-03 03:28:38,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:28:38,004 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 03:28:38,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:38,005 INFO L225 Difference]: With dead ends: 57 [2022-11-03 03:28:38,005 INFO L226 Difference]: Without dead ends: 55 [2022-11-03 03:28:38,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=103, Invalid=653, Unknown=4, NotChecked=52, Total=812 [2022-11-03 03:28:38,007 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 44 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:38,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 126 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 97 Invalid, 0 Unknown, 61 Unchecked, 0.4s Time] [2022-11-03 03:28:38,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-03 03:28:38,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 33. [2022-11-03 03:28:38,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:38,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2022-11-03 03:28:38,015 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 14 [2022-11-03 03:28:38,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:38,016 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2022-11-03 03:28:38,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:38,016 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2022-11-03 03:28:38,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:28:38,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:38,017 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:38,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:28:38,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:28:38,231 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:38,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:38,231 INFO L85 PathProgramCache]: Analyzing trace with hash -7410200, now seen corresponding path program 1 times [2022-11-03 03:28:38,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:38,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571580343] [2022-11-03 03:28:38,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:38,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:38,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:38,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:38,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571580343] [2022-11-03 03:28:38,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571580343] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:28:38,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906091778] [2022-11-03 03:28:38,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:38,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:28:38,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:28:38,579 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:28:38,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:28:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:38,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-03 03:28:38,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:28:38,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:28:38,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:38,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:38,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2022-11-03 03:28:38,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:38,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:38,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2022-11-03 03:28:38,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:38,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 19 [2022-11-03 03:28:38,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:38,832 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 19 [2022-11-03 03:28:38,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:38,843 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-03 03:28:38,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:38,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-03 03:28:38,869 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-03 03:28:38,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 03:28:39,247 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-11-03 03:28:39,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 68 treesize of output 42 [2022-11-03 03:28:39,264 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-03 03:28:39,264 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2022-11-03 03:28:39,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:39,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:28:39,465 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:28:39,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 40 [2022-11-03 03:28:39,480 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:28:39,481 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 34 [2022-11-03 03:28:39,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:28:39,515 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:28:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:39,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906091778] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:28:39,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:28:39,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 7] total 15 [2022-11-03 03:28:39,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963404059] [2022-11-03 03:28:39,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:39,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:28:39,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:39,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:28:39,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:28:39,806 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:40,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:40,145 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2022-11-03 03:28:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:28:40,146 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 03:28:40,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:40,147 INFO L225 Difference]: With dead ends: 48 [2022-11-03 03:28:40,147 INFO L226 Difference]: Without dead ends: 35 [2022-11-03 03:28:40,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2022-11-03 03:28:40,149 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:40,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 60 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 14 Unchecked, 0.1s Time] [2022-11-03 03:28:40,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-03 03:28:40,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-03 03:28:40,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:40,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2022-11-03 03:28:40,157 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 15 [2022-11-03 03:28:40,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:40,158 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2022-11-03 03:28:40,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:40,158 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2022-11-03 03:28:40,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 03:28:40,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:40,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:40,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:28:40,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:28:40,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:40,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:40,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1072665624, now seen corresponding path program 1 times [2022-11-03 03:28:40,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:40,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790701095] [2022-11-03 03:28:40,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:40,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:40,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:40,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:40,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790701095] [2022-11-03 03:28:40,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790701095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:40,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:40,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:28:40,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031376539] [2022-11-03 03:28:40,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:40,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:28:40,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:40,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:28:40,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:28:40,824 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:41,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:41,092 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2022-11-03 03:28:41,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:28:41,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 03:28:41,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:41,094 INFO L225 Difference]: With dead ends: 69 [2022-11-03 03:28:41,094 INFO L226 Difference]: Without dead ends: 62 [2022-11-03 03:28:41,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:28:41,095 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 49 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:41,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 65 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:28:41,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-03 03:28:41,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2022-11-03 03:28:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2022-11-03 03:28:41,105 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 15 [2022-11-03 03:28:41,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:41,105 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2022-11-03 03:28:41,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:41,106 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2022-11-03 03:28:41,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 03:28:41,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:41,107 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:41,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:28:41,107 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:41,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:41,108 INFO L85 PathProgramCache]: Analyzing trace with hash 491912158, now seen corresponding path program 2 times [2022-11-03 03:28:41,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:41,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008220799] [2022-11-03 03:28:41,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:41,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:42,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:42,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008220799] [2022-11-03 03:28:42,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008220799] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:28:42,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606602398] [2022-11-03 03:28:42,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:28:42,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:28:42,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:28:42,539 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:28:42,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:28:43,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-03 03:28:43,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:28:43,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-03 03:28:43,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:28:43,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 03:28:43,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:28:43,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:43,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2022-11-03 03:28:43,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-11-03 03:28:43,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 39 [2022-11-03 03:28:43,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:43,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:43,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:43,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-03 03:28:43,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-03 03:28:43,306 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 03:28:43,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 03:28:43,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:43,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:43,388 INFO L356 Elim1Store]: treesize reduction 137, result has 7.4 percent of original size [2022-11-03 03:28:43,388 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 38 [2022-11-03 03:28:43,420 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 03:28:43,420 INFO L390 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 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-03 03:28:43,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:43,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-03 03:28:43,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:43,599 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-03 03:28:43,629 INFO L356 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2022-11-03 03:28:43,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 29 [2022-11-03 03:28:43,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-03 03:28:43,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-03 03:28:43,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 03:28:43,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 03:28:43,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:43,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:28:43,833 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~head~0#1.base_19| Int) (v_ArrVal_774 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~head~0#1.base_19|) 0)) (not (= 1 (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~head~0#1.base_19| v_ArrVal_774) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8)))))) is different from false [2022-11-03 03:28:43,874 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:28:43,875 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2022-11-03 03:28:43,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 69 [2022-11-03 03:28:43,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 51 [2022-11-03 03:28:44,122 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:28:44,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 183 treesize of output 152 [2022-11-03 03:28:44,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 314 treesize of output 234 [2022-11-03 03:28:44,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 227 treesize of output 217 [2022-11-03 03:28:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 2 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-03 03:28:44,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606602398] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:28:44,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1376855742] [2022-11-03 03:28:44,883 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-03 03:28:44,883 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:28:44,883 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:28:44,884 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:28:44,884 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:28:44,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:44,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:44,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:44,945 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 03:28:44,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2022-11-03 03:28:44,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:44,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:44,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-03 03:28:45,002 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 03:28:45,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 03:28:45,017 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 03:28:45,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-03 03:28:45,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-03 03:28:45,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:45,249 INFO L356 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-03 03:28:45,250 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 33 [2022-11-03 03:28:45,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 33 [2022-11-03 03:28:45,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:45,452 INFO L356 Elim1Store]: treesize reduction 50, result has 39.0 percent of original size [2022-11-03 03:28:45,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 64 [2022-11-03 03:28:45,516 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 03:28:45,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 03:28:45,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2022-11-03 03:28:45,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-03 03:28:45,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2022-11-03 03:28:45,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:45,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:45,783 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:45,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:45,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:46,203 INFO L356 Elim1Store]: treesize reduction 251, result has 14.0 percent of original size [2022-11-03 03:28:46,206 INFO L390 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 11 case distinctions, treesize of input 383 treesize of output 328 [2022-11-03 03:28:46,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:46,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:46,282 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:46,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:46,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:46,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:46,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:46,464 INFO L356 Elim1Store]: treesize reduction 54, result has 40.0 percent of original size [2022-11-03 03:28:46,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 408 treesize of output 346 [2022-11-03 03:28:46,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:46,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:46,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:46,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:46,569 INFO L356 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-11-03 03:28:46,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 457 treesize of output 393 [2022-11-03 03:28:46,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:46,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:46,673 INFO L356 Elim1Store]: treesize reduction 142, result has 11.8 percent of original size [2022-11-03 03:28:46,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 444 treesize of output 416 [2022-11-03 03:28:46,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:46,803 INFO L356 Elim1Store]: treesize reduction 94, result has 14.5 percent of original size [2022-11-03 03:28:46,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 360 treesize of output 365 [2022-11-03 03:28:46,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:46,947 INFO L356 Elim1Store]: treesize reduction 138, result has 10.4 percent of original size [2022-11-03 03:28:46,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 365 treesize of output 369 [2022-11-03 03:28:46,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:46,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:46,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:46,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:46,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:47,022 INFO L356 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-03 03:28:47,023 INFO L390 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 6 case distinctions, treesize of input 389 treesize of output 352 [2022-11-03 03:28:47,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,069 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:47,077 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-03 03:28:47,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 369 treesize of output 352 [2022-11-03 03:28:47,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:47,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:47,145 INFO L356 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2022-11-03 03:28:47,145 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 374 treesize of output 361 [2022-11-03 03:28:47,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 18 [2022-11-03 03:28:47,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:28:47,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:28:47,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,664 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 03:28:47,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 116 [2022-11-03 03:28:47,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,710 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:47,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,770 INFO L356 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2022-11-03 03:28:47,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 22 [2022-11-03 03:28:47,801 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 03:28:47,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 127 treesize of output 108 [2022-11-03 03:28:47,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 15 [2022-11-03 03:28:47,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-03 03:28:47,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-03 03:28:47,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2022-11-03 03:28:47,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:28:47,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:47,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-03 03:28:47,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:47,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-03 03:28:47,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:28:48,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:48,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:48,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:48,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:48,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 18 [2022-11-03 03:28:48,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:48,337 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 03:28:48,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 116 [2022-11-03 03:28:48,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:48,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:48,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:48,436 INFO L356 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2022-11-03 03:28:48,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 22 [2022-11-03 03:28:48,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:48,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 15 [2022-11-03 03:28:48,481 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 03:28:48,481 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 81 [2022-11-03 03:28:48,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:48,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-03 03:28:48,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:28:48,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:28:48,531 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:28:49,412 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1074#(and (< |ULTIMATE.start_main_~head~0#1.base| |#StackHeapBarrier|) (not (= |ULTIMATE.start_main_~head~0#1.base| 0)) (= (select |#length| |ULTIMATE.start_main_~head~0#1.base|) 12) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ 8 |ULTIMATE.start_main_~x~0#1.offset|)) 1) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) |ULTIMATE.start_main_~x~0#1.offset|) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) 4) 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) 0) 0) (= (select |#valid| |ULTIMATE.start_main_~head~0#1.base|) 1) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) 4) 0) (= |#NULL.offset| 0) (not (= |ULTIMATE.start_main_~x~0#1.base| 0)) (= |ULTIMATE.start_main_~x~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|)) (= (select (select |#memory_int| |ULTIMATE.start_main_~head~0#1.base|) 8) 1) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:28:49,412 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:28:49,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:28:49,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-11-03 03:28:49,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346411987] [2022-11-03 03:28:49,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:28:49,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 03:28:49,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:49,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 03:28:49,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=574, Unknown=2, NotChecked=48, Total=702 [2022-11-03 03:28:49,415 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:50,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:50,330 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2022-11-03 03:28:50,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:28:50,331 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 03:28:50,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:50,332 INFO L225 Difference]: With dead ends: 74 [2022-11-03 03:28:50,332 INFO L226 Difference]: Without dead ends: 72 [2022-11-03 03:28:50,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=148, Invalid=910, Unknown=2, NotChecked=62, Total=1122 [2022-11-03 03:28:50,334 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 95 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:50,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 206 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 143 Invalid, 0 Unknown, 150 Unchecked, 0.5s Time] [2022-11-03 03:28:50,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-03 03:28:50,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 42. [2022-11-03 03:28:50,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:50,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2022-11-03 03:28:50,351 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 16 [2022-11-03 03:28:50,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:50,351 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2022-11-03 03:28:50,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:50,352 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2022-11-03 03:28:50,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:28:50,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:50,353 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:50,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:28:50,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 03:28:50,554 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:50,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:50,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1463614765, now seen corresponding path program 1 times [2022-11-03 03:28:50,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:50,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846204696] [2022-11-03 03:28:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:50,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:50,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:50,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:50,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846204696] [2022-11-03 03:28:50,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846204696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:50,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:50,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:28:50,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341159811] [2022-11-03 03:28:50,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:50,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:28:50,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:50,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:28:50,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:28:50,914 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:51,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:51,226 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2022-11-03 03:28:51,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:28:51,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-03 03:28:51,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:51,228 INFO L225 Difference]: With dead ends: 62 [2022-11-03 03:28:51,228 INFO L226 Difference]: Without dead ends: 50 [2022-11-03 03:28:51,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:28:51,229 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 23 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:51,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 58 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:28:51,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-03 03:28:51,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2022-11-03 03:28:51,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 37 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:51,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-11-03 03:28:51,238 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 17 [2022-11-03 03:28:51,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:51,238 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-11-03 03:28:51,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:51,239 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-11-03 03:28:51,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:28:51,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:51,240 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:51,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:28:51,240 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:51,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:51,241 INFO L85 PathProgramCache]: Analyzing trace with hash 425816397, now seen corresponding path program 1 times [2022-11-03 03:28:51,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:51,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232110078] [2022-11-03 03:28:51,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:51,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:52,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:52,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232110078] [2022-11-03 03:28:52,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232110078] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:28:52,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565727879] [2022-11-03 03:28:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:52,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:28:52,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:28:52,699 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:28:52,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:28:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:52,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-03 03:28:52,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:28:52,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:28:52,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 108 [2022-11-03 03:28:53,043 INFO L356 Elim1Store]: treesize reduction 56, result has 33.3 percent of original size [2022-11-03 03:28:53,044 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: var is still there: v_arrayElimArr_14 input size 87 context size 87 output size 87 [2022-11-03 03:28:53,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1708694156] [2022-11-03 03:28:53,047 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-03 03:28:53,047 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:28:53,047 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:28:53,048 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:28:53,048 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:28:53,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,067 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-03 03:28:53,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-03 03:28:53,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,118 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 03:28:53,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 50 [2022-11-03 03:28:53,161 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 03:28:53,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-03 03:28:53,211 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 03:28:53,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 03:28:53,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 33 [2022-11-03 03:28:53,590 INFO L356 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-03 03:28:53,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 38 [2022-11-03 03:28:53,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,604 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:53,646 INFO L356 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2022-11-03 03:28:53,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 48 [2022-11-03 03:28:53,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,688 INFO L356 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-03 03:28:53,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 33 [2022-11-03 03:28:53,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2022-11-03 03:28:53,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,762 INFO L356 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-03 03:28:53,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 60 [2022-11-03 03:28:53,820 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 03:28:53,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 03:28:53,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:53,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:54,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:54,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:54,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:54,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:54,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:54,597 INFO L356 Elim1Store]: treesize reduction 54, result has 40.0 percent of original size [2022-11-03 03:28:54,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 8 case distinctions, treesize of input 383 treesize of output 337 [2022-11-03 03:28:54,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:54,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:54,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:54,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:55,019 INFO L356 Elim1Store]: treesize reduction 150, result has 20.2 percent of original size [2022-11-03 03:28:55,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 534 treesize of output 434 [2022-11-03 03:28:55,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:55,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:55,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:55,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:55,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:55,266 INFO L356 Elim1Store]: treesize reduction 307, result has 13.8 percent of original size [2022-11-03 03:28:55,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 410 treesize of output 368 [2022-11-03 03:28:55,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:55,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:55,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:55,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:55,367 INFO L356 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-03 03:28:55,367 INFO L390 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 6 case distinctions, treesize of input 389 treesize of output 352 [2022-11-03 03:28:55,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:55,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:55,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:55,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:55,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:55,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:55,424 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-03 03:28:55,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 369 treesize of output 352 [2022-11-03 03:28:55,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:55,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:55,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:55,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:55,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:55,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:55,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:55,503 INFO L356 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2022-11-03 03:28:55,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 374 treesize of output 361 [2022-11-03 03:28:55,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:55,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:55,589 INFO L356 Elim1Store]: treesize reduction 142, result has 11.8 percent of original size [2022-11-03 03:28:55,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 409 treesize of output 389 [2022-11-03 03:28:55,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:55,682 INFO L356 Elim1Store]: treesize reduction 94, result has 14.5 percent of original size [2022-11-03 03:28:55,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 360 treesize of output 365 [2022-11-03 03:28:55,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:55,781 INFO L356 Elim1Store]: treesize reduction 138, result has 10.4 percent of original size [2022-11-03 03:28:55,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 365 treesize of output 369 [2022-11-03 03:28:56,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:56,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:56,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,227 INFO L356 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2022-11-03 03:28:56,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 18 [2022-11-03 03:28:56,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 22 [2022-11-03 03:28:56,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:28:56,337 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 03:28:56,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 100 [2022-11-03 03:28:56,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:56,377 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-03 03:28:56,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 70 [2022-11-03 03:28:56,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,400 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 15 [2022-11-03 03:28:56,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-03 03:28:56,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:28:56,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-03 03:28:56,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-03 03:28:56,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:28:56,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:56,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-03 03:28:56,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:28:56,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:56,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:56,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,818 INFO L356 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2022-11-03 03:28:56,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 18 [2022-11-03 03:28:56,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,884 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 22 [2022-11-03 03:28:56,892 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:28:56,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:28:56,933 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 03:28:56,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 100 [2022-11-03 03:28:56,949 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:28:56,971 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-03 03:28:56,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 70 [2022-11-03 03:28:56,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:56,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 15 [2022-11-03 03:28:57,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:28:57,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-03 03:28:57,018 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:28:57,545 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1410#(and (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:28:57,545 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:28:57,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:28:57,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-11-03 03:28:57,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423955975] [2022-11-03 03:28:57,545 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-03 03:28:57,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 03:28:57,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:57,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 03:28:57,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:28:57,547 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:58,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:58,311 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2022-11-03 03:28:58,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 03:28:58,312 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-03 03:28:58,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:58,313 INFO L225 Difference]: With dead ends: 75 [2022-11-03 03:28:58,313 INFO L226 Difference]: Without dead ends: 73 [2022-11-03 03:28:58,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2022-11-03 03:28:58,314 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 55 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:58,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 125 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:28:58,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-03 03:28:58,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 49. [2022-11-03 03:28:58,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.25) internal successors, (60), 48 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:58,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2022-11-03 03:28:58,326 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 17 [2022-11-03 03:28:58,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:58,326 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2022-11-03 03:28:58,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:58,327 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2022-11-03 03:28:58,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 03:28:58,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:58,328 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:58,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:28:58,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 03:28:58,555 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:58,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:58,555 INFO L85 PathProgramCache]: Analyzing trace with hash 403061201, now seen corresponding path program 1 times [2022-11-03 03:28:58,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:58,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290172139] [2022-11-03 03:28:58,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:58,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:28:58,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:28:58,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:28:58,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290172139] [2022-11-03 03:28:58,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290172139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:28:58,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:28:58,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:28:58,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028823653] [2022-11-03 03:28:58,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:28:58,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:28:58,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:28:58,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:28:58,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:28:58,758 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:58,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:28:58,942 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2022-11-03 03:28:58,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:28:58,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 03:28:58,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:28:58,943 INFO L225 Difference]: With dead ends: 62 [2022-11-03 03:28:58,943 INFO L226 Difference]: Without dead ends: 44 [2022-11-03 03:28:58,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:28:58,945 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:28:58,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 51 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:28:58,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-03 03:28:58,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-03 03:28:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:58,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2022-11-03 03:28:58,961 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 18 [2022-11-03 03:28:58,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:28:58,962 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2022-11-03 03:28:58,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:28:58,963 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2022-11-03 03:28:58,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-03 03:28:58,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:28:58,964 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:28:58,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:28:58,965 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:28:58,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:28:58,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1182546770, now seen corresponding path program 1 times [2022-11-03 03:28:58,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:28:58,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753515137] [2022-11-03 03:28:58,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:28:58,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:28:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:29:00,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:00,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753515137] [2022-11-03 03:29:00,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753515137] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:29:00,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103027942] [2022-11-03 03:29:00,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:00,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:29:00,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:29:00,694 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:29:00,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_607f8108-bd39-413d-8347-c74ec8dcc32e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:29:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:00,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 03:29:00,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:29:00,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:29:01,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2022-11-03 03:29:01,081 INFO L356 Elim1Store]: treesize reduction 56, result has 33.3 percent of original size [2022-11-03 03:29:01,082 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: var is still there: v_arrayElimArr_17 input size 48 context size 48 output size 48 [2022-11-03 03:29:01,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1795055176] [2022-11-03 03:29:01,085 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-03 03:29:01,086 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:29:01,086 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:29:01,086 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:29:01,086 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:29:01,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-03 03:29:01,139 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 03:29:01,140 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-11-03 03:29:01,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-03 03:29:01,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,194 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 03:29:01,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 50 [2022-11-03 03:29:01,240 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 03:29:01,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-03 03:29:01,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:01,451 INFO L356 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-03 03:29:01,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 33 [2022-11-03 03:29:01,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 33 [2022-11-03 03:29:01,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:01,643 INFO L356 Elim1Store]: treesize reduction 50, result has 39.0 percent of original size [2022-11-03 03:29:01,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 64 [2022-11-03 03:29:01,699 INFO L356 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-11-03 03:29:01,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 38 [2022-11-03 03:29:01,767 INFO L356 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-03 03:29:01,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-03 03:29:01,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2022-11-03 03:29:01,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2022-11-03 03:29:01,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:01,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:02,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:02,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:02,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:02,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:02,521 INFO L356 Elim1Store]: treesize reduction 54, result has 40.0 percent of original size [2022-11-03 03:29:02,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 383 treesize of output 337 [2022-11-03 03:29:02,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:02,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:02,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:02,979 INFO L356 Elim1Store]: treesize reduction 150, result has 20.2 percent of original size [2022-11-03 03:29:02,980 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 534 treesize of output 434 [2022-11-03 03:29:03,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:03,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:03,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:03,239 INFO L356 Elim1Store]: treesize reduction 307, result has 13.8 percent of original size [2022-11-03 03:29:03,240 INFO L390 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 410 treesize of output 368 [2022-11-03 03:29:03,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:03,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:03,320 INFO L356 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-03 03:29:03,320 INFO L390 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 6 case distinctions, treesize of input 389 treesize of output 352 [2022-11-03 03:29:03,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:03,377 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-03 03:29:03,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 369 treesize of output 352 [2022-11-03 03:29:03,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:03,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:03,455 INFO L356 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2022-11-03 03:29:03,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 374 treesize of output 361 [2022-11-03 03:29:03,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:03,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:03,542 INFO L356 Elim1Store]: treesize reduction 142, result has 11.8 percent of original size [2022-11-03 03:29:03,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 409 treesize of output 389 [2022-11-03 03:29:03,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,626 INFO L356 Elim1Store]: treesize reduction 94, result has 14.5 percent of original size [2022-11-03 03:29:03,626 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 360 treesize of output 365 [2022-11-03 03:29:03,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,702 INFO L356 Elim1Store]: treesize reduction 138, result has 10.4 percent of original size [2022-11-03 03:29:03,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 365 treesize of output 369 [2022-11-03 03:29:03,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:03,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:04,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 18 [2022-11-03 03:29:04,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:29:04,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:04,120 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 03:29:04,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 116 [2022-11-03 03:29:04,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:04,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:04,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:04,193 INFO L356 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2022-11-03 03:29:04,194 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 22 [2022-11-03 03:29:04,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:04,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 15 [2022-11-03 03:29:04,243 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 03:29:04,243 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 81 [2022-11-03 03:29:04,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:04,257 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-03 03:29:04,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:29:04,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:04,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:04,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:04,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:04,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:04,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:04,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:04,371 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-03 03:29:04,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 244 treesize of output 232 [2022-11-03 03:29:04,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:04,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:04,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:04,747 INFO L356 Elim1Store]: treesize reduction 448, result has 20.8 percent of original size [2022-11-03 03:29:04,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 5 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 711 treesize of output 633 [2022-11-03 03:29:04,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:04,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 9 [2022-11-03 03:29:04,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:04,970 INFO L356 Elim1Store]: treesize reduction 27, result has 41.3 percent of original size [2022-11-03 03:29:04,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 32 [2022-11-03 03:29:05,197 INFO L356 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-03 03:29:05,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 44 [2022-11-03 03:29:05,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:05,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-11-03 03:29:05,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:05,291 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:29:05,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 52 [2022-11-03 03:29:05,702 INFO L356 Elim1Store]: treesize reduction 104, result has 31.6 percent of original size [2022-11-03 03:29:05,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 824 treesize of output 1740 [2022-11-03 03:29:08,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:08,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:08,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 03:29:08,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:08,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:09,020 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:29:09,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 53 [2022-11-03 03:29:24,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:24,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:24,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:24,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 20 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 1340 treesize of output 19048 [2022-11-03 03:29:25,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:25,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:25,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:25,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:25,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 95 [2022-11-03 03:29:25,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:25,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:25,941 INFO L390 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 83 treesize of output 73 [2022-11-03 03:29:26,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:26,988 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:27,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:27,067 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 20 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 1331 treesize of output 19041 [2022-11-03 03:29:28,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:28,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:28,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:28,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:28,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 104 [2022-11-03 03:29:28,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:28,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:28,651 INFO L390 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 95 treesize of output 85 [2022-11-03 03:29:29,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:29,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:29,500 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 03:29:29,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:29,780 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:29,820 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:29,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 20 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 1340 treesize of output 18852 [2022-11-03 03:29:30,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:30,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:30,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:30,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:30,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 71 [2022-11-03 03:29:30,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:30,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:30,977 INFO L390 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 20 treesize of output 10 [2022-11-03 03:29:31,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:31,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:31,792 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 03:29:31,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:31,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:31,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:31,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 20 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 1331 treesize of output 18845 [2022-11-03 03:29:32,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:32,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:32,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:32,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:32,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 104 [2022-11-03 03:29:32,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:32,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:32,462 INFO L390 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 95 treesize of output 85 [2022-11-03 03:29:37,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:37,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:37,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:37,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 20 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 1406 treesize of output 18144 [2022-11-03 03:29:37,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:37,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:37,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:37,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:37,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:37,319 INFO L390 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 128 treesize of output 98 [2022-11-03 03:29:37,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:37,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:37,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:37,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 88 [2022-11-03 03:29:43,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:43,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:43,438 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:43,461 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 20 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 1344 treesize of output 18084 [2022-11-03 03:29:45,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:45,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:45,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:45,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:45,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:45,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 269 treesize of output 243 [2022-11-03 03:29:46,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:46,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:46,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:46,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:46,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:46,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 25 [2022-11-03 03:29:47,552 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:47,557 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:47,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:47,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 20 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 1353 treesize of output 18091 [2022-11-03 03:29:48,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:48,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:48,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:48,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:48,329 INFO L390 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 208 treesize of output 178 [2022-11-03 03:29:48,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:48,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:48,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:48,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:48,717 INFO L390 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 190 treesize of output 164 [2022-11-03 03:29:49,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:49,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:49,548 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 03:29:52,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:52,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:52,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:52,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 20 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 1331 treesize of output 18700 [2022-11-03 03:29:54,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:54,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:54,454 INFO L390 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 24 treesize of output 14 [2022-11-03 03:29:55,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:55,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:55,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:55,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:55,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 303 treesize of output 285 [2022-11-03 03:29:57,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:57,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:57,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:57,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 20 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 1340 treesize of output 18707 [2022-11-03 03:29:58,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:58,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:58,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:58,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:58,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 237 treesize of output 211 [2022-11-03 03:29:59,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:59,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:29:59,435 INFO L390 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 26 treesize of output 16 [2022-11-03 03:29:59,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:59,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:29:59,659 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 03:30:02,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:30:02,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:30:31,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:30:31,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:30:31,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:30:31,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:30:31,655 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 18 [2022-11-03 03:30:31,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:30:31,763 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 03:30:31,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 116 [2022-11-03 03:30:31,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:30:31,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:30:31,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:30:31,855 INFO L356 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2022-11-03 03:30:31,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 22 [2022-11-03 03:30:31,885 INFO L356 Elim1Store]: treesize reduction 53, result has 17.2 percent of original size [2022-11-03 03:30:31,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 127 treesize of output 108 [2022-11-03 03:30:31,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:30:31,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 15 [2022-11-03 03:30:31,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:30:31,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-11-03 03:30:31,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 03:30:31,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 03:30:31,957 INFO L180 IcfgInterpreter]: Interpretation finished