./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 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_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --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-4e7fbc6 [2022-11-23 14:04:34,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:04:34,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:04:34,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:04:34,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:04:34,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:04:34,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:04:34,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:04:34,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:04:34,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:04:34,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:04:34,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:04:34,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:04:34,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:04:34,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:04:34,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:04:34,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:04:34,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:04:34,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:04:34,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:04:34,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:04:34,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:04:34,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:04:34,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:04:34,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:04:34,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:04:34,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:04:34,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:04:34,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:04:34,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:04:34,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:04:34,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:04:34,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:04:34,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:04:34,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:04:34,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:04:34,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:04:34,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:04:34,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:04:34,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:04:34,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:04:34,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-23 14:04:34,242 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:04:34,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:04:34,243 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:04:34,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:04:34,244 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:04:34,244 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:04:34,244 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:04:34,244 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:04:34,244 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:04:34,245 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:04:34,245 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:04:34,245 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:04:34,245 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:04:34,245 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:04:34,246 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:04:34,246 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:04:34,246 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:04:34,246 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:04:34,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 14:04:34,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 14:04:34,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:04:34,247 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:04:34,248 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:04:34,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:04:34,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:04:34,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:04:34,248 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 14:04:34,249 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 14:04:34,249 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 14:04:34,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:04:34,249 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:04:34,249 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:04:34,249 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:04:34,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:04:34,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:04:34,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:04:34,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:04:34,251 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:04:34,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:04:34,251 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:04:34,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:04:34,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:04:34,251 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_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d8386495cfc7d925686020c12a2509d702f4bf2aed1f5dea2d7da468cac3b6e [2022-11-23 14:04:34,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:04:34,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:04:34,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:04:34,569 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:04:34,570 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:04:34,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i [2022-11-23 14:04:37,692 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:04:38,023 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:04:38,023 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i [2022-11-23 14:04:38,034 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/data/fe034d94d/82c01c4425b9449381572dda878e119a/FLAG770f74734 [2022-11-23 14:04:38,050 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/data/fe034d94d/82c01c4425b9449381572dda878e119a [2022-11-23 14:04:38,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:04:38,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:04:38,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:04:38,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:04:38,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:04:38,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:04:38" (1/1) ... [2022-11-23 14:04:38,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a8c32ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:38, skipping insertion in model container [2022-11-23 14:04:38,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:04:38" (1/1) ... [2022-11-23 14:04:38,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:04:38,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:04:38,494 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i[22778,22791] [2022-11-23 14:04:38,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:04:38,526 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:04:38,588 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/sv-benchmarks/c/forester-heap/dll-simple-white-blue-2.i[22778,22791] [2022-11-23 14:04:38,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:04:38,627 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:04:38,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:38 WrapperNode [2022-11-23 14:04:38,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:04:38,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:04:38,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:04:38,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:04:38,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:38" (1/1) ... [2022-11-23 14:04:38,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:38" (1/1) ... [2022-11-23 14:04:38,712 INFO L138 Inliner]: procedures = 119, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 121 [2022-11-23 14:04:38,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:04:38,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:04:38,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:04:38,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:04:38,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:38" (1/1) ... [2022-11-23 14:04:38,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:38" (1/1) ... [2022-11-23 14:04:38,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:38" (1/1) ... [2022-11-23 14:04:38,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:38" (1/1) ... [2022-11-23 14:04:38,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:38" (1/1) ... [2022-11-23 14:04:38,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:38" (1/1) ... [2022-11-23 14:04:38,742 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:38" (1/1) ... [2022-11-23 14:04:38,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:38" (1/1) ... [2022-11-23 14:04:38,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:04:38,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:04:38,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:04:38,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:04:38,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:38" (1/1) ... [2022-11-23 14:04:38,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:04:38,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:04:38,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:04:38,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:04:38,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:04:38,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:04:38,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:04:38,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:04:38,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:04:38,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:04:38,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:04:38,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:04:38,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:04:38,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:04:38,995 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:04:38,998 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:04:39,513 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:04:39,582 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:04:39,582 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-23 14:04:39,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:04:39 BoogieIcfgContainer [2022-11-23 14:04:39,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:04:39,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:04:39,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:04:39,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:04:39,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:04:38" (1/3) ... [2022-11-23 14:04:39,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d322cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:04:39, skipping insertion in model container [2022-11-23 14:04:39,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:38" (2/3) ... [2022-11-23 14:04:39,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d322cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:04:39, skipping insertion in model container [2022-11-23 14:04:39,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:04:39" (3/3) ... [2022-11-23 14:04:39,595 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue-2.i [2022-11-23 14:04:39,616 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:04:39,616 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2022-11-23 14:04:39,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:04:39,671 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@f51075f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:04:39,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2022-11-23 14:04:39,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 46 states have (on average 2.5869565217391304) internal successors, (119), 105 states have internal predecessors, (119), 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) [2022-11-23 14:04:39,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 14:04:39,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:39,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 14:04:39,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:39,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:39,690 INFO L85 PathProgramCache]: Analyzing trace with hash 7599, now seen corresponding path program 1 times [2022-11-23 14:04:39,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:39,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616830145] [2022-11-23 14:04:39,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:39,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:39,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:39,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:39,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616830145] [2022-11-23 14:04:39,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616830145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:39,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:39,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:04:39,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066203382] [2022-11-23 14:04:39,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:39,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:04:39,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:40,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:04:40,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:04:40,005 INFO L87 Difference]: Start difference. First operand has 106 states, 46 states have (on average 2.5869565217391304) internal successors, (119), 105 states have internal predecessors, (119), 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 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-23 14:04:40,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:40,238 INFO L93 Difference]: Finished difference Result 106 states and 113 transitions. [2022-11-23 14:04:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:04:40,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-23 14:04:40,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:40,256 INFO L225 Difference]: With dead ends: 106 [2022-11-23 14:04:40,257 INFO L226 Difference]: Without dead ends: 104 [2022-11-23 14:04:40,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:04:40,263 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 94 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:40,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 50 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:04:40,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-23 14:04:40,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2022-11-23 14:04:40,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 45 states have (on average 2.4) internal successors, (108), 100 states have internal predecessors, (108), 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) [2022-11-23 14:04:40,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2022-11-23 14:04:40,316 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 2 [2022-11-23 14:04:40,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:40,317 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2022-11-23 14:04:40,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-23 14:04:40,319 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2022-11-23 14:04:40,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 14:04:40,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:40,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 14:04:40,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:04:40,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:40,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:40,321 INFO L85 PathProgramCache]: Analyzing trace with hash 7600, now seen corresponding path program 1 times [2022-11-23 14:04:40,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:40,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173529931] [2022-11-23 14:04:40,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:40,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:40,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:40,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173529931] [2022-11-23 14:04:40,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173529931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:40,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:40,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:04:40,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486971307] [2022-11-23 14:04:40,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:40,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:04:40,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:40,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:04:40,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:04:40,458 INFO L87 Difference]: Start difference. First operand 101 states and 108 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-23 14:04:40,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:40,666 INFO L93 Difference]: Finished difference Result 122 states and 131 transitions. [2022-11-23 14:04:40,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:04:40,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-23 14:04:40,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:40,668 INFO L225 Difference]: With dead ends: 122 [2022-11-23 14:04:40,668 INFO L226 Difference]: Without dead ends: 122 [2022-11-23 14:04:40,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:04:40,670 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 90 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:40,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 82 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:04:40,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-23 14:04:40,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 98. [2022-11-23 14:04:40,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 45 states have (on average 2.3333333333333335) internal successors, (105), 97 states have internal predecessors, (105), 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) [2022-11-23 14:04:40,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2022-11-23 14:04:40,692 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 2 [2022-11-23 14:04:40,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:40,693 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2022-11-23 14:04:40,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-23 14:04:40,693 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2022-11-23 14:04:40,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 14:04:40,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:40,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:40,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:04:40,695 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:40,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:40,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1507198728, now seen corresponding path program 1 times [2022-11-23 14:04:40,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:40,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209287886] [2022-11-23 14:04:40,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:40,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:40,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:40,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:40,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209287886] [2022-11-23 14:04:40,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209287886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:40,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:40,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:04:40,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715960726] [2022-11-23 14:04:40,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:40,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:04:40,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:40,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:04:40,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:04:40,963 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:04:41,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:41,271 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2022-11-23 14:04:41,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:04:41,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 14:04:41,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:41,273 INFO L225 Difference]: With dead ends: 96 [2022-11-23 14:04:41,273 INFO L226 Difference]: Without dead ends: 96 [2022-11-23 14:04:41,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:04:41,275 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 138 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:41,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 29 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:04:41,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-23 14:04:41,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2022-11-23 14:04:41,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 52 states have (on average 1.9615384615384615) internal successors, (102), 88 states have internal predecessors, (102), 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) [2022-11-23 14:04:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2022-11-23 14:04:41,283 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 7 [2022-11-23 14:04:41,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:41,284 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2022-11-23 14:04:41,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:04:41,284 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2022-11-23 14:04:41,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 14:04:41,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:41,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:41,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:04:41,285 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:41,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:41,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1507198727, now seen corresponding path program 1 times [2022-11-23 14:04:41,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:41,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270829513] [2022-11-23 14:04:41,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:41,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:41,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:41,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270829513] [2022-11-23 14:04:41,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270829513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:41,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:41,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:04:41,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51649643] [2022-11-23 14:04:41,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:41,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:04:41,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:41,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:04:41,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:04:41,485 INFO L87 Difference]: Start difference. First operand 89 states and 102 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:04:41,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:41,771 INFO L93 Difference]: Finished difference Result 121 states and 134 transitions. [2022-11-23 14:04:41,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:04:41,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 14:04:41,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:41,773 INFO L225 Difference]: With dead ends: 121 [2022-11-23 14:04:41,773 INFO L226 Difference]: Without dead ends: 121 [2022-11-23 14:04:41,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:04:41,775 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 179 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:41,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 38 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:04:41,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-23 14:04:41,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 105. [2022-11-23 14:04:41,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 71 states have (on average 1.732394366197183) internal successors, (123), 104 states have internal predecessors, (123), 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) [2022-11-23 14:04:41,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2022-11-23 14:04:41,784 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 7 [2022-11-23 14:04:41,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:41,784 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2022-11-23 14:04:41,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:04:41,785 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2022-11-23 14:04:41,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 14:04:41,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:41,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:41,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:04:41,786 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:41,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:41,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1013812514, now seen corresponding path program 1 times [2022-11-23 14:04:41,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:41,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852837776] [2022-11-23 14:04:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:41,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:42,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:42,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852837776] [2022-11-23 14:04:42,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852837776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:42,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:42,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:04:42,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471487490] [2022-11-23 14:04:42,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:42,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:04:42,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:42,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:04:42,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:04:42,143 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:04:42,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:42,370 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2022-11-23 14:04:42,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:04:42,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 14:04:42,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:42,373 INFO L225 Difference]: With dead ends: 104 [2022-11-23 14:04:42,373 INFO L226 Difference]: Without dead ends: 104 [2022-11-23 14:04:42,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:04:42,375 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 5 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:42,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 152 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:04:42,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-23 14:04:42,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-11-23 14:04:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 71 states have (on average 1.704225352112676) internal successors, (121), 103 states have internal predecessors, (121), 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) [2022-11-23 14:04:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 121 transitions. [2022-11-23 14:04:42,382 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 121 transitions. Word has length 9 [2022-11-23 14:04:42,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:42,383 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 121 transitions. [2022-11-23 14:04:42,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:04:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 121 transitions. [2022-11-23 14:04:42,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 14:04:42,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:42,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:42,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:04:42,387 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:42,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:42,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1013812515, now seen corresponding path program 1 times [2022-11-23 14:04:42,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:42,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463413606] [2022-11-23 14:04:42,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:42,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:42,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:42,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463413606] [2022-11-23 14:04:42,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463413606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:42,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:42,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:04:42,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531540591] [2022-11-23 14:04:42,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:42,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:04:42,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:42,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:04:42,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:04:42,540 INFO L87 Difference]: Start difference. First operand 104 states and 121 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:04:42,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:42,730 INFO L93 Difference]: Finished difference Result 103 states and 119 transitions. [2022-11-23 14:04:42,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:04:42,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 14:04:42,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:42,732 INFO L225 Difference]: With dead ends: 103 [2022-11-23 14:04:42,732 INFO L226 Difference]: Without dead ends: 103 [2022-11-23 14:04:42,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:04:42,737 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 4 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:42,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 164 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:04:42,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-23 14:04:42,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-11-23 14:04:42,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 71 states have (on average 1.676056338028169) internal successors, (119), 102 states have internal predecessors, (119), 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) [2022-11-23 14:04:42,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2022-11-23 14:04:42,757 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 9 [2022-11-23 14:04:42,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:42,758 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2022-11-23 14:04:42,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:04:42,758 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2022-11-23 14:04:42,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:04:42,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:42,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:42,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:04:42,760 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:42,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:42,763 INFO L85 PathProgramCache]: Analyzing trace with hash 683937548, now seen corresponding path program 1 times [2022-11-23 14:04:42,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:42,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676376596] [2022-11-23 14:04:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:42,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:43,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:43,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:43,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676376596] [2022-11-23 14:04:43,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676376596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:43,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:43,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 14:04:43,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775004620] [2022-11-23 14:04:43,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:43,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:04:43,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:43,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:04:43,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:04:43,041 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2022-11-23 14:04:43,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:43,353 INFO L93 Difference]: Finished difference Result 106 states and 120 transitions. [2022-11-23 14:04:43,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:04:43,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 11 [2022-11-23 14:04:43,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:43,354 INFO L225 Difference]: With dead ends: 106 [2022-11-23 14:04:43,354 INFO L226 Difference]: Without dead ends: 106 [2022-11-23 14:04:43,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:04:43,355 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 130 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:43,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 84 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:04:43,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-23 14:04:43,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102. [2022-11-23 14:04:43,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 71 states have (on average 1.6619718309859155) internal successors, (118), 101 states have internal predecessors, (118), 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) [2022-11-23 14:04:43,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2022-11-23 14:04:43,360 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 11 [2022-11-23 14:04:43,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:43,360 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2022-11-23 14:04:43,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2022-11-23 14:04:43,360 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2022-11-23 14:04:43,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:04:43,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:43,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:43,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:04:43,361 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:43,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:43,362 INFO L85 PathProgramCache]: Analyzing trace with hash 683937549, now seen corresponding path program 1 times [2022-11-23 14:04:43,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:43,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789005870] [2022-11-23 14:04:43,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:43,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:43,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:43,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789005870] [2022-11-23 14:04:43,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789005870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:43,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:43,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:04:43,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269392812] [2022-11-23 14:04:43,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:43,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 14:04:43,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:43,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 14:04:43,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:04:43,713 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-11-23 14:04:44,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:44,192 INFO L93 Difference]: Finished difference Result 103 states and 118 transitions. [2022-11-23 14:04:44,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 14:04:44,193 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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 11 [2022-11-23 14:04:44,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:44,194 INFO L225 Difference]: With dead ends: 103 [2022-11-23 14:04:44,194 INFO L226 Difference]: Without dead ends: 103 [2022-11-23 14:04:44,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:04:44,195 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 124 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:44,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 110 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:04:44,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-23 14:04:44,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 91. [2022-11-23 14:04:44,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 65 states have (on average 1.6307692307692307) internal successors, (106), 90 states have internal predecessors, (106), 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) [2022-11-23 14:04:44,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2022-11-23 14:04:44,199 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 11 [2022-11-23 14:04:44,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:44,200 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2022-11-23 14:04:44,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-11-23 14:04:44,200 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2022-11-23 14:04:44,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 14:04:44,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:44,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:44,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:04:44,201 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:44,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:44,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1248189631, now seen corresponding path program 1 times [2022-11-23 14:04:44,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:44,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503431793] [2022-11-23 14:04:44,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:44,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:44,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:44,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503431793] [2022-11-23 14:04:44,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503431793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:44,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:44,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:04:44,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049588625] [2022-11-23 14:04:44,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:44,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:04:44,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:44,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:04:44,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:04:44,423 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2022-11-23 14:04:44,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:44,594 INFO L93 Difference]: Finished difference Result 101 states and 118 transitions. [2022-11-23 14:04:44,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:04:44,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-23 14:04:44,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:44,595 INFO L225 Difference]: With dead ends: 101 [2022-11-23 14:04:44,595 INFO L226 Difference]: Without dead ends: 101 [2022-11-23 14:04:44,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:04:44,596 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 17 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:44,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 176 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:04:44,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-23 14:04:44,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2022-11-23 14:04:44,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 71 states have (on average 1.6056338028169015) internal successors, (114), 96 states have internal predecessors, (114), 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) [2022-11-23 14:04:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 114 transitions. [2022-11-23 14:04:44,600 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 114 transitions. Word has length 13 [2022-11-23 14:04:44,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:44,601 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 114 transitions. [2022-11-23 14:04:44,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2022-11-23 14:04:44,601 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 114 transitions. [2022-11-23 14:04:44,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 14:04:44,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:44,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:44,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:04:44,602 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:44,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:44,602 INFO L85 PathProgramCache]: Analyzing trace with hash 516590819, now seen corresponding path program 1 times [2022-11-23 14:04:44,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:44,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844728974] [2022-11-23 14:04:44,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:44,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:44,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:44,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:44,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844728974] [2022-11-23 14:04:44,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844728974] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:04:44,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180676853] [2022-11-23 14:04:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:44,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:04:44,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:04:44,954 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:04:44,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:04:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:45,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-23 14:04:45,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:45,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:04:45,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:04:45,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-23 14:04:45,315 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:04:45,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2022-11-23 14:04:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:45,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:04:45,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180676853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:45,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:04:45,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2022-11-23 14:04:45,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537001055] [2022-11-23 14:04:45,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:45,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:04:45,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:45,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:04:45,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:04:45,377 INFO L87 Difference]: Start difference. First operand 97 states and 114 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2022-11-23 14:04:45,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:45,901 INFO L93 Difference]: Finished difference Result 122 states and 140 transitions. [2022-11-23 14:04:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:04:45,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 [2022-11-23 14:04:45,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:45,903 INFO L225 Difference]: With dead ends: 122 [2022-11-23 14:04:45,903 INFO L226 Difference]: Without dead ends: 121 [2022-11-23 14:04:45,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:04:45,904 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 30 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:45,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 221 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:04:45,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-23 14:04:45,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 100. [2022-11-23 14:04:45,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 74 states have (on average 1.5810810810810811) internal successors, (117), 99 states have internal predecessors, (117), 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) [2022-11-23 14:04:45,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2022-11-23 14:04:45,908 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 16 [2022-11-23 14:04:45,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:45,908 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2022-11-23 14:04:45,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2022-11-23 14:04:45,909 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2022-11-23 14:04:45,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 14:04:45,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:45,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:45,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 14:04:46,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:04:46,121 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:46,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:46,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1015708218, now seen corresponding path program 1 times [2022-11-23 14:04:46,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:46,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398431182] [2022-11-23 14:04:46,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:46,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:46,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:46,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:46,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398431182] [2022-11-23 14:04:46,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398431182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:46,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:46,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:04:46,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766461235] [2022-11-23 14:04:46,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:46,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:04:46,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:46,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:04:46,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:04:46,237 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-23 14:04:46,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:46,452 INFO L93 Difference]: Finished difference Result 155 states and 177 transitions. [2022-11-23 14:04:46,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:04:46,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 [2022-11-23 14:04:46,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:46,454 INFO L225 Difference]: With dead ends: 155 [2022-11-23 14:04:46,454 INFO L226 Difference]: Without dead ends: 155 [2022-11-23 14:04:46,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:04:46,455 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 45 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:46,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 212 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:04:46,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-23 14:04:46,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 109. [2022-11-23 14:04:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 83 states have (on average 1.5662650602409638) internal successors, (130), 108 states have internal predecessors, (130), 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) [2022-11-23 14:04:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 130 transitions. [2022-11-23 14:04:46,459 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 130 transitions. Word has length 16 [2022-11-23 14:04:46,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:46,459 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 130 transitions. [2022-11-23 14:04:46,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-23 14:04:46,460 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 130 transitions. [2022-11-23 14:04:46,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 14:04:46,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:46,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:46,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 14:04:46,461 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:46,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:46,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1165607615, now seen corresponding path program 1 times [2022-11-23 14:04:46,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:46,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597574789] [2022-11-23 14:04:46,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:46,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:46,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:46,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597574789] [2022-11-23 14:04:46,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597574789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:46,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:46,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:04:46,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573603819] [2022-11-23 14:04:46,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:46,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:04:46,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:46,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:04:46,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:04:46,702 INFO L87 Difference]: Start difference. First operand 109 states and 130 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 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) [2022-11-23 14:04:46,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:46,989 INFO L93 Difference]: Finished difference Result 131 states and 153 transitions. [2022-11-23 14:04:46,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:04:46,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 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 [2022-11-23 14:04:46,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:46,990 INFO L225 Difference]: With dead ends: 131 [2022-11-23 14:04:46,991 INFO L226 Difference]: Without dead ends: 131 [2022-11-23 14:04:46,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:04:46,992 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 182 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:46,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 58 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:04:46,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-23 14:04:46,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 109. [2022-11-23 14:04:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 84 states have (on average 1.5595238095238095) internal successors, (131), 108 states have internal predecessors, (131), 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) [2022-11-23 14:04:46,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2022-11-23 14:04:46,995 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 17 [2022-11-23 14:04:46,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:46,996 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2022-11-23 14:04:46,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 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) [2022-11-23 14:04:46,996 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2022-11-23 14:04:46,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 14:04:46,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:46,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:46,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 14:04:47,000 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:47,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:47,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1165607614, now seen corresponding path program 1 times [2022-11-23 14:04:47,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:47,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725647486] [2022-11-23 14:04:47,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:47,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:47,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:47,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:47,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725647486] [2022-11-23 14:04:47,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725647486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:47,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:47,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:04:47,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49611898] [2022-11-23 14:04:47,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:47,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:04:47,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:47,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:04:47,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:04:47,401 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2022-11-23 14:04:47,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:47,793 INFO L93 Difference]: Finished difference Result 155 states and 174 transitions. [2022-11-23 14:04:47,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:04:47,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 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 [2022-11-23 14:04:47,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:47,795 INFO L225 Difference]: With dead ends: 155 [2022-11-23 14:04:47,795 INFO L226 Difference]: Without dead ends: 155 [2022-11-23 14:04:47,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:04:47,796 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 200 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:47,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 82 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:04:47,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-23 14:04:47,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 122. [2022-11-23 14:04:47,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 97 states have (on average 1.577319587628866) internal successors, (153), 121 states have internal predecessors, (153), 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) [2022-11-23 14:04:47,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 153 transitions. [2022-11-23 14:04:47,800 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 153 transitions. Word has length 17 [2022-11-23 14:04:47,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:47,801 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 153 transitions. [2022-11-23 14:04:47,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2022-11-23 14:04:47,802 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 153 transitions. [2022-11-23 14:04:47,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 14:04:47,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:47,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:47,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 14:04:47,804 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:47,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:47,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1774020082, now seen corresponding path program 1 times [2022-11-23 14:04:47,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:47,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374629498] [2022-11-23 14:04:47,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:47,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:47,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:47,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:47,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374629498] [2022-11-23 14:04:47,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374629498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:47,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:47,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:04:47,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164063704] [2022-11-23 14:04:47,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:47,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:04:47,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:47,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:04:47,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:04:47,888 INFO L87 Difference]: Start difference. First operand 122 states and 153 transitions. Second operand has 4 states, 4 states have (on average 4.5) 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) [2022-11-23 14:04:48,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:48,019 INFO L93 Difference]: Finished difference Result 140 states and 167 transitions. [2022-11-23 14:04:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:04:48,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) 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 [2022-11-23 14:04:48,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:48,021 INFO L225 Difference]: With dead ends: 140 [2022-11-23 14:04:48,021 INFO L226 Difference]: Without dead ends: 140 [2022-11-23 14:04:48,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:04:48,021 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 128 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:48,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 73 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:04:48,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-23 14:04:48,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 122. [2022-11-23 14:04:48,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 97 states have (on average 1.556701030927835) internal successors, (151), 121 states have internal predecessors, (151), 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) [2022-11-23 14:04:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 151 transitions. [2022-11-23 14:04:48,025 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 151 transitions. Word has length 18 [2022-11-23 14:04:48,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:48,025 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 151 transitions. [2022-11-23 14:04:48,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) 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) [2022-11-23 14:04:48,026 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 151 transitions. [2022-11-23 14:04:48,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 14:04:48,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:48,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:48,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 14:04:48,027 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:48,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:48,027 INFO L85 PathProgramCache]: Analyzing trace with hash 837550246, now seen corresponding path program 1 times [2022-11-23 14:04:48,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:48,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929757703] [2022-11-23 14:04:48,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:48,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:48,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:48,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:48,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929757703] [2022-11-23 14:04:48,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929757703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:48,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:48,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:04:48,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34962552] [2022-11-23 14:04:48,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:48,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:04:48,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:48,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:04:48,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:04:48,600 INFO L87 Difference]: Start difference. First operand 122 states and 151 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 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) [2022-11-23 14:04:49,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:49,200 INFO L93 Difference]: Finished difference Result 165 states and 192 transitions. [2022-11-23 14:04:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 14:04:49,201 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 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 19 [2022-11-23 14:04:49,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:49,201 INFO L225 Difference]: With dead ends: 165 [2022-11-23 14:04:49,202 INFO L226 Difference]: Without dead ends: 165 [2022-11-23 14:04:49,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:04:49,202 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 205 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:49,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 227 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:04:49,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-23 14:04:49,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2022-11-23 14:04:49,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 107 states have (on average 1.514018691588785) internal successors, (162), 131 states have internal predecessors, (162), 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) [2022-11-23 14:04:49,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 162 transitions. [2022-11-23 14:04:49,206 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 162 transitions. Word has length 19 [2022-11-23 14:04:49,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:49,206 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 162 transitions. [2022-11-23 14:04:49,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 10 states have internal predecessors, (19), 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) [2022-11-23 14:04:49,207 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 162 transitions. [2022-11-23 14:04:49,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 14:04:49,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:49,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:49,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 14:04:49,208 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:49,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:49,208 INFO L85 PathProgramCache]: Analyzing trace with hash 267602560, now seen corresponding path program 1 times [2022-11-23 14:04:49,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:49,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560750519] [2022-11-23 14:04:49,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:49,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:49,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:49,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560750519] [2022-11-23 14:04:49,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560750519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:49,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:49,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:04:49,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847493088] [2022-11-23 14:04:49,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:49,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:04:49,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:49,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:04:49,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:04:49,288 INFO L87 Difference]: Start difference. First operand 132 states and 162 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-11-23 14:04:49,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:49,422 INFO L93 Difference]: Finished difference Result 145 states and 172 transitions. [2022-11-23 14:04:49,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:04:49,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2022-11-23 14:04:49,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:49,423 INFO L225 Difference]: With dead ends: 145 [2022-11-23 14:04:49,423 INFO L226 Difference]: Without dead ends: 145 [2022-11-23 14:04:49,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:04:49,424 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 125 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:49,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 70 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:04:49,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-23 14:04:49,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 134. [2022-11-23 14:04:49,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 109 states have (on average 1.4954128440366972) internal successors, (163), 133 states have internal predecessors, (163), 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) [2022-11-23 14:04:49,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 163 transitions. [2022-11-23 14:04:49,427 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 163 transitions. Word has length 20 [2022-11-23 14:04:49,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:49,428 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 163 transitions. [2022-11-23 14:04:49,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-11-23 14:04:49,428 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 163 transitions. [2022-11-23 14:04:49,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 14:04:49,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:49,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:49,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 14:04:49,433 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:49,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:49,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1219787998, now seen corresponding path program 1 times [2022-11-23 14:04:49,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:49,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302145643] [2022-11-23 14:04:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:49,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:49,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:49,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302145643] [2022-11-23 14:04:49,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302145643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:49,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:49,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 14:04:49,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092783595] [2022-11-23 14:04:49,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:49,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:04:49,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:49,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:04:49,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:04:49,671 INFO L87 Difference]: Start difference. First operand 134 states and 163 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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) [2022-11-23 14:04:49,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:49,927 INFO L93 Difference]: Finished difference Result 171 states and 195 transitions. [2022-11-23 14:04:49,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:04:49,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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 20 [2022-11-23 14:04:49,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:49,928 INFO L225 Difference]: With dead ends: 171 [2022-11-23 14:04:49,928 INFO L226 Difference]: Without dead ends: 171 [2022-11-23 14:04:49,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:04:49,929 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 144 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:49,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 200 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:04:49,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-23 14:04:49,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 138. [2022-11-23 14:04:49,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 113 states have (on average 1.4778761061946903) internal successors, (167), 137 states have internal predecessors, (167), 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) [2022-11-23 14:04:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 167 transitions. [2022-11-23 14:04:49,936 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 167 transitions. Word has length 20 [2022-11-23 14:04:49,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:49,937 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 167 transitions. [2022-11-23 14:04:49,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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) [2022-11-23 14:04:49,937 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 167 transitions. [2022-11-23 14:04:49,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 14:04:49,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:49,940 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:49,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 14:04:49,941 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:49,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:49,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1727530513, now seen corresponding path program 1 times [2022-11-23 14:04:49,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:49,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511369698] [2022-11-23 14:04:49,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:49,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:50,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:50,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511369698] [2022-11-23 14:04:50,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511369698] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:04:50,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513937772] [2022-11-23 14:04:50,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:50,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:04:50,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:04:50,452 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:04:50,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:04:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:50,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-23 14:04:50,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:50,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:04:50,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:04:50,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:04:50,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:50,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:04:50,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:50,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:04:50,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:50,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:04:50,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:50,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:04:50,750 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:04:50,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-23 14:04:50,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 14:04:50,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 14:04:50,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-23 14:04:50,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-23 14:04:50,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:50,894 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 14:04:50,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2022-11-23 14:04:50,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:50,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-23 14:04:51,271 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-11-23 14:04:51,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 68 treesize of output 42 [2022-11-23 14:04:51,281 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-23 14:04:51,282 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:04:51,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:51,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:04:51,618 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:04:51,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 25 [2022-11-23 14:04:51,638 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:04:51,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 25 [2022-11-23 14:04:52,358 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:04:52,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-11-23 14:04:52,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-23 14:04:52,391 INFO L321 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2022-11-23 14:04:52,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 18 [2022-11-23 14:04:52,409 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:04:52,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-11-23 14:04:52,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-23 14:04:52,435 INFO L321 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2022-11-23 14:04:52,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 23 [2022-11-23 14:04:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:52,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513937772] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 14:04:52,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:04:52,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9, 10] total 25 [2022-11-23 14:04:52,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194053557] [2022-11-23 14:04:52,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:52,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:04:52,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:52,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:04:52,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-11-23 14:04:52,509 INFO L87 Difference]: Start difference. First operand 138 states and 167 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 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) [2022-11-23 14:04:54,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:54,599 INFO L93 Difference]: Finished difference Result 158 states and 187 transitions. [2022-11-23 14:04:54,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 14:04:54,600 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 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 21 [2022-11-23 14:04:54,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:54,601 INFO L225 Difference]: With dead ends: 158 [2022-11-23 14:04:54,601 INFO L226 Difference]: Without dead ends: 158 [2022-11-23 14:04:54,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=189, Invalid=1213, Unknown=4, NotChecked=0, Total=1406 [2022-11-23 14:04:54,603 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 129 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 29 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:54,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 201 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 523 Invalid, 9 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 14:04:54,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-23 14:04:54,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 151. [2022-11-23 14:04:54,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 126 states have (on average 1.4523809523809523) internal successors, (183), 150 states have internal predecessors, (183), 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) [2022-11-23 14:04:54,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 183 transitions. [2022-11-23 14:04:54,607 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 183 transitions. Word has length 21 [2022-11-23 14:04:54,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:54,607 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 183 transitions. [2022-11-23 14:04:54,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 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) [2022-11-23 14:04:54,607 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 183 transitions. [2022-11-23 14:04:54,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 14:04:54,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:54,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:54,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 14:04:54,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 14:04:54,809 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:54,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:54,809 INFO L85 PathProgramCache]: Analyzing trace with hash 841223906, now seen corresponding path program 1 times [2022-11-23 14:04:54,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:54,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395207687] [2022-11-23 14:04:54,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:54,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:55,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:55,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395207687] [2022-11-23 14:04:55,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395207687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:55,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:55,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:04:55,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965187307] [2022-11-23 14:04:55,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:55,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 14:04:55,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:55,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 14:04:55,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:04:55,134 INFO L87 Difference]: Start difference. First operand 151 states and 183 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2022-11-23 14:04:55,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:55,543 INFO L93 Difference]: Finished difference Result 175 states and 204 transitions. [2022-11-23 14:04:55,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 14:04:55,543 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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 21 [2022-11-23 14:04:55,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:55,544 INFO L225 Difference]: With dead ends: 175 [2022-11-23 14:04:55,545 INFO L226 Difference]: Without dead ends: 175 [2022-11-23 14:04:55,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:04:55,545 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 73 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:55,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 181 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:04:55,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-23 14:04:55,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 160. [2022-11-23 14:04:55,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 135 states have (on average 1.4222222222222223) internal successors, (192), 159 states have internal predecessors, (192), 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) [2022-11-23 14:04:55,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 192 transitions. [2022-11-23 14:04:55,550 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 192 transitions. Word has length 21 [2022-11-23 14:04:55,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:55,550 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 192 transitions. [2022-11-23 14:04:55,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2022-11-23 14:04:55,551 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 192 transitions. [2022-11-23 14:04:55,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 14:04:55,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:55,551 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:55,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 14:04:55,552 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:04:55,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:55,552 INFO L85 PathProgramCache]: Analyzing trace with hash 165372252, now seen corresponding path program 1 times [2022-11-23 14:04:55,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:55,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250755807] [2022-11-23 14:04:55,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:55,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:55,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:55,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250755807] [2022-11-23 14:04:55,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250755807] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:04:55,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343284890] [2022-11-23 14:04:55,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:55,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:04:55,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:04:55,959 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:04:55,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:04:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:56,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-23 14:04:56,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:56,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:04:56,194 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:04:56,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-23 14:04:56,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:04:56,310 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:04:56,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-11-23 14:04:56,370 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:04:56,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2022-11-23 14:04:56,419 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:04:56,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-23 14:04:56,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-23 14:04:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:56,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:04:56,564 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_799 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_799) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) 1)) is different from false [2022-11-23 14:04:56,576 INFO L321 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2022-11-23 14:04:56,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-23 14:04:56,583 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_799 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_799) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) |c_ULTIMATE.start_main_~x~0#1.base|)) is different from false [2022-11-23 14:04:56,628 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_799 (Array Int Int)) (v_ArrVal_797 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_797))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (= (select (select (store .cse0 .cse1 v_ArrVal_799) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) .cse1)))) is different from false [2022-11-23 14:04:56,682 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:04:56,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 36 [2022-11-23 14:04:56,697 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:04:56,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 408 treesize of output 343 [2022-11-23 14:04:56,722 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:04:56,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 328 treesize of output 300 [2022-11-23 14:04:56,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 292 treesize of output 276 [2022-11-23 14:04:57,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:04:57,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343284890] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:04:57,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1283137154] [2022-11-23 14:04:57,856 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-23 14:04:57,856 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:04:57,863 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:04:57,869 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:04:57,869 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:04:57,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:57,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:57,936 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:04:57,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:04:57,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:57,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-23 14:04:57,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:04:57,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:57,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-23 14:04:58,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:04:58,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:04:58,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-23 14:04:58,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-23 14:04:58,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-23 14:04:58,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,121 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 35 [2022-11-23 14:04:58,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-23 14:04:58,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-23 14:04:58,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-23 14:04:58,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,235 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:04:58,249 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-23 14:04:58,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 125 [2022-11-23 14:04:58,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 94 [2022-11-23 14:04:58,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 33 [2022-11-23 14:04:58,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:04:58,332 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 14:04:58,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 116 treesize of output 77 [2022-11-23 14:04:58,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,360 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-23 14:04:58,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 36 [2022-11-23 14:04:58,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-23 14:04:58,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 42 treesize of output 43 [2022-11-23 14:04:58,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-23 14:04:58,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 35 treesize of output 40 [2022-11-23 14:04:58,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2022-11-23 14:04:58,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,572 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 42 treesize of output 43 [2022-11-23 14:04:58,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,596 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 42 treesize of output 43 [2022-11-23 14:04:58,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-23 14:04:58,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:04:58,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:04:58,827 INFO L321 Elim1Store]: treesize reduction 154, result has 16.8 percent of original size [2022-11-23 14:04:58,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 509 treesize of output 442 [2022-11-23 14:04:58,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,863 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:04:58,931 INFO L321 Elim1Store]: treesize reduction 244, result has 11.9 percent of original size [2022-11-23 14:04:58,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 435 treesize of output 394 [2022-11-23 14:04:58,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:58,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:04:58,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:04:59,034 INFO L321 Elim1Store]: treesize reduction 150, result has 17.1 percent of original size [2022-11-23 14:04:59,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 462 treesize of output 443 [2022-11-23 14:04:59,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:04:59,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:59,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:04:59,513 INFO L321 Elim1Store]: treesize reduction 354, result has 14.7 percent of original size [2022-11-23 14:04:59,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 666 treesize of output 498 [2022-11-23 14:04:59,541 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:04:59,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:59,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:04:59,788 INFO L321 Elim1Store]: treesize reduction 444, result has 14.5 percent of original size [2022-11-23 14:04:59,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 695 treesize of output 644 [2022-11-23 14:04:59,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:59,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:04:59,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:04:59,931 INFO L321 Elim1Store]: treesize reduction 122, result has 26.1 percent of original size [2022-11-23 14:04:59,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 622 treesize of output 624 [2022-11-23 14:05:00,686 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:05:00,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:05:00,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:05:00,913 INFO L321 Elim1Store]: treesize reduction 298, result has 17.9 percent of original size [2022-11-23 14:05:00,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 1566 treesize of output 1129 [2022-11-23 14:05:01,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:05:01,437 INFO L321 Elim1Store]: treesize reduction 230, result has 25.3 percent of original size [2022-11-23 14:05:01,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 1413 treesize of output 1244 [2022-11-23 14:05:01,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:05:01,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:05:01,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:05:01,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:05:01,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:05:01,628 INFO L321 Elim1Store]: treesize reduction 170, result has 17.1 percent of original size [2022-11-23 14:05:01,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 1285 treesize of output 1229 [2022-11-23 14:05:05,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:05:06,029 INFO L321 Elim1Store]: treesize reduction 156, result has 13.8 percent of original size [2022-11-23 14:05:06,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 4163 treesize of output 3903 [2022-11-23 14:05:07,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:05:07,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:05:07,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:05:07,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:05:07,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:05:07,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:05:08,857 INFO L321 Elim1Store]: treesize reduction 1126, result has 11.9 percent of original size [2022-11-23 14:05:08,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 8 disjoint index pairs (out of 91 index pairs), introduced 16 new quantified variables, introduced 99 case distinctions, treesize of input 4678 treesize of output 3687 [2022-11-23 14:05:09,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:05:09,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:05:09,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:05:09,651 INFO L321 Elim1Store]: treesize reduction 608, result has 9.0 percent of original size [2022-11-23 14:05:09,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 41 case distinctions, treesize of input 4766 treesize of output 4102 [2022-11-23 14:05:09,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:05:09,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:05:09,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:05:09,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:05:09,772 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:05:10,097 INFO L321 Elim1Store]: treesize reduction 170, result has 17.1 percent of original size [2022-11-23 14:05:10,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 4772 treesize of output 4560 [2022-11-23 14:05:16,347 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-23 14:05:16,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 84 [2022-11-23 14:05:16,379 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-23 14:05:16,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 96 [2022-11-23 14:05:16,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2022-11-23 14:05:16,676 INFO L321 Elim1Store]: treesize reduction 142, result has 47.6 percent of original size [2022-11-23 14:05:16,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 197 treesize of output 254 [2022-11-23 14:05:16,875 INFO L321 Elim1Store]: treesize reduction 132, result has 43.3 percent of original size [2022-11-23 14:05:16,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 184 treesize of output 228 [2022-11-23 14:07:06,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:07:20,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:07:20,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:07:20,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:20,247 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:07:20,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-23 14:07:20,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 14:07:20,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:07:20,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-23 14:07:20,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-23 14:07:20,309 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-23 14:07:20,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 84 [2022-11-23 14:07:20,339 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-23 14:07:20,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 96 [2022-11-23 14:07:20,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 1 [2022-11-23 14:07:20,626 INFO L321 Elim1Store]: treesize reduction 142, result has 47.6 percent of original size [2022-11-23 14:07:20,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 197 treesize of output 254 [2022-11-23 14:07:20,834 INFO L321 Elim1Store]: treesize reduction 132, result has 43.3 percent of original size [2022-11-23 14:07:20,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 184 treesize of output 228 [2022-11-23 14:08:26,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:08:42,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:08:42,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:08:42,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:08:43,178 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:08:43,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-23 14:08:43,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 14:08:43,460 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:08:45,338 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5338#(and (not (= (select |#valid| |ULTIMATE.start_main_~x~0#1.base|) 1)) (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~head~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~head~0#1.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-23 14:08:45,338 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:08:45,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:08:45,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 27 [2022-11-23 14:08:45,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9947486] [2022-11-23 14:08:45,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:08:45,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-23 14:08:45,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:08:45,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-23 14:08:45,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1389, Unknown=9, NotChecked=234, Total=1806 [2022-11-23 14:08:45,341 INFO L87 Difference]: Start difference. First operand 160 states and 192 transitions. Second operand has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 28 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) [2022-11-23 14:08:47,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:08:47,392 INFO L93 Difference]: Finished difference Result 291 states and 337 transitions. [2022-11-23 14:08:47,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 14:08:47,393 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 28 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) Word has length 21 [2022-11-23 14:08:47,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:08:47,394 INFO L225 Difference]: With dead ends: 291 [2022-11-23 14:08:47,394 INFO L226 Difference]: Without dead ends: 291 [2022-11-23 14:08:47,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=384, Invalid=2699, Unknown=9, NotChecked=330, Total=3422 [2022-11-23 14:08:47,396 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 742 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 2359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 622 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:08:47,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 513 Invalid, 2359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1578 Invalid, 0 Unknown, 622 Unchecked, 1.4s Time] [2022-11-23 14:08:47,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-23 14:08:47,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 213. [2022-11-23 14:08:47,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 188 states have (on average 1.5) internal successors, (282), 212 states have internal predecessors, (282), 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) [2022-11-23 14:08:47,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 282 transitions. [2022-11-23 14:08:47,401 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 282 transitions. Word has length 21 [2022-11-23 14:08:47,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:08:47,401 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 282 transitions. [2022-11-23 14:08:47,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 28 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) [2022-11-23 14:08:47,402 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 282 transitions. [2022-11-23 14:08:47,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 14:08:47,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:08:47,402 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:08:47,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:08:47,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:08:47,609 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:08:47,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:08:47,609 INFO L85 PathProgramCache]: Analyzing trace with hash 165372253, now seen corresponding path program 1 times [2022-11-23 14:08:47,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:08:47,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752362642] [2022-11-23 14:08:47,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:08:47,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:08:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:08:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:08:48,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:08:48,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752362642] [2022-11-23 14:08:48,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752362642] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:08:48,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688843308] [2022-11-23 14:08:48,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:08:48,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:08:48,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:08:48,104 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:08:48,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:08:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:08:48,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-23 14:08:48,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:08:48,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:08:48,343 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-23 14:08:48,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-23 14:08:48,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:08:48,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:08:48,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:08:48,531 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:08:48,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-11-23 14:08:48,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-23 14:08:48,598 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:08:48,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2022-11-23 14:08:48,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:48,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 14:08:48,648 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:08:48,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-11-23 14:08:48,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-23 14:08:48,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-23 14:08:48,805 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:08:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:08:48,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:08:49,015 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_902 (Array Int Int)) (v_ArrVal_903 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_903) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_902 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2022-11-23 14:08:49,038 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_902 (Array Int Int)) (v_ArrVal_903 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_903) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_902 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2022-11-23 14:08:49,056 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_898 (Array Int Int)) (v_ArrVal_899 (Array Int Int)) (v_ArrVal_902 (Array Int Int)) (v_ArrVal_903 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_899))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (<= (+ 4 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_898) .cse0 v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_903) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) (forall ((v_ArrVal_898 (Array Int Int)) (v_ArrVal_899 (Array Int Int)) (v_ArrVal_902 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_898) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_899) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2022-11-23 14:08:49,074 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_898 (Array Int Int)) (v_ArrVal_899 (Array Int Int)) (v_ArrVal_902 (Array Int Int)) (v_ArrVal_903 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_899))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_898) .cse1 v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_903) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) (forall ((v_ArrVal_898 (Array Int Int)) (v_ArrVal_899 (Array Int Int)) (v_ArrVal_902 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_898) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_899) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_902) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2022-11-23 14:08:49,086 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:08:49,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 74 [2022-11-23 14:08:49,095 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:08:49,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 50 [2022-11-23 14:08:49,110 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:08:49,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 334 treesize of output 301 [2022-11-23 14:08:49,136 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:08:49,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 598 treesize of output 573 [2022-11-23 14:08:49,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 558 treesize of output 534 [2022-11-23 14:08:49,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 534 treesize of output 526 [2022-11-23 14:08:49,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 526 treesize of output 502 [2022-11-23 14:08:49,196 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:08:49,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 502 treesize of output 458 [2022-11-23 14:08:51,237 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:08:51,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-23 14:08:51,254 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:08:51,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-23 14:08:51,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:51,269 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 18 [2022-11-23 14:08:51,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:51,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-23 14:08:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:08:51,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688843308] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:08:51,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1998278838] [2022-11-23 14:08:51,434 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-23 14:08:51,434 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:08:51,434 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:08:51,435 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:08:51,435 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:08:51,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,453 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:08:51,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:08:51,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:08:51,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-23 14:08:51,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:08:51,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:08:51,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-23 14:08:51,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-23 14:08:51,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-23 14:08:51,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-23 14:08:51,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,596 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 35 [2022-11-23 14:08:51,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-23 14:08:51,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-23 14:08:51,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-23 14:08:51,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:51,696 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-23 14:08:51,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 125 [2022-11-23 14:08:51,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 94 [2022-11-23 14:08:51,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 33 [2022-11-23 14:08:51,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,785 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-23 14:08:51,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 42 [2022-11-23 14:08:51,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:51,814 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 14:08:51,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 116 treesize of output 77 [2022-11-23 14:08:51,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,844 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-23 14:08:51,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 36 [2022-11-23 14:08:51,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 35 treesize of output 40 [2022-11-23 14:08:51,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 35 treesize of output 40 [2022-11-23 14:08:51,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-23 14:08:51,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2022-11-23 14:08:51,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:51,993 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 42 treesize of output 43 [2022-11-23 14:08:52,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:52,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:52,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:52,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:52,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-23 14:08:52,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:52,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:52,027 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 42 treesize of output 43 [2022-11-23 14:08:52,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:52,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:52,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:52,197 INFO L321 Elim1Store]: treesize reduction 154, result has 16.8 percent of original size [2022-11-23 14:08:52,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 509 treesize of output 442 [2022-11-23 14:08:52,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:52,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:52,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:52,288 INFO L321 Elim1Store]: treesize reduction 150, result has 17.1 percent of original size [2022-11-23 14:08:52,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 501 treesize of output 474 [2022-11-23 14:08:52,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:52,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:52,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:52,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:52,322 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:52,390 INFO L321 Elim1Store]: treesize reduction 244, result has 11.9 percent of original size [2022-11-23 14:08:52,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 435 treesize of output 394 [2022-11-23 14:08:52,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:52,636 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:52,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:52,802 INFO L321 Elim1Store]: treesize reduction 364, result has 12.3 percent of original size [2022-11-23 14:08:52,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 659 treesize of output 481 [2022-11-23 14:08:52,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:52,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:53,056 INFO L321 Elim1Store]: treesize reduction 436, result has 16.0 percent of original size [2022-11-23 14:08:53,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 682 treesize of output 643 [2022-11-23 14:08:53,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:53,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:53,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:53,213 INFO L321 Elim1Store]: treesize reduction 122, result has 26.1 percent of original size [2022-11-23 14:08:53,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 603 treesize of output 605 [2022-11-23 14:08:53,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:53,558 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:53,558 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:53,701 INFO L321 Elim1Store]: treesize reduction 168, result has 27.0 percent of original size [2022-11-23 14:08:53,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 907 treesize of output 695 [2022-11-23 14:08:53,740 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:53,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:54,002 INFO L321 Elim1Store]: treesize reduction 310, result has 20.7 percent of original size [2022-11-23 14:08:54,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 19 case distinctions, treesize of input 866 treesize of output 800 [2022-11-23 14:08:54,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:54,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:54,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:54,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:54,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:54,186 INFO L321 Elim1Store]: treesize reduction 170, result has 17.1 percent of original size [2022-11-23 14:08:54,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 780 treesize of output 752 [2022-11-23 14:08:55,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:55,104 INFO L321 Elim1Store]: treesize reduction 156, result has 13.8 percent of original size [2022-11-23 14:08:55,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 1063 treesize of output 1015 [2022-11-23 14:08:55,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:55,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:55,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:55,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:55,486 INFO L321 Elim1Store]: treesize reduction 196, result has 20.3 percent of original size [2022-11-23 14:08:55,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 1204 treesize of output 960 [2022-11-23 14:08:55,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:55,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:55,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:55,684 INFO L321 Elim1Store]: treesize reduction 286, result has 13.9 percent of original size [2022-11-23 14:08:55,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 1220 treesize of output 1122 [2022-11-23 14:08:55,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:55,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:55,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:55,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:08:55,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:08:55,856 INFO L321 Elim1Store]: treesize reduction 170, result has 17.1 percent of original size [2022-11-23 14:08:55,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 1226 treesize of output 1184 [2022-11-23 14:08:56,189 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-23 14:08:56,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 84 [2022-11-23 14:08:56,223 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-23 14:08:56,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 96 [2022-11-23 14:08:56,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2022-11-23 14:08:56,488 INFO L321 Elim1Store]: treesize reduction 142, result has 47.6 percent of original size [2022-11-23 14:08:56,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 197 treesize of output 254 [2022-11-23 14:08:56,683 INFO L321 Elim1Store]: treesize reduction 132, result has 43.3 percent of original size [2022-11-23 14:08:56,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 184 treesize of output 228 [2022-11-23 14:10:02,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:10:09,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:10:09,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:10:09,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:10:09,814 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:10:09,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-23 14:10:09,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-23 14:10:09,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-23 14:10:09,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:10:09,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-23 14:10:09,880 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-23 14:10:09,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 84 [2022-11-23 14:10:09,906 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-23 14:10:09,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 96 [2022-11-23 14:10:09,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 1 [2022-11-23 14:10:10,168 INFO L321 Elim1Store]: treesize reduction 142, result has 47.6 percent of original size [2022-11-23 14:10:10,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 197 treesize of output 254 [2022-11-23 14:10:10,360 INFO L321 Elim1Store]: treesize reduction 132, result has 43.3 percent of original size [2022-11-23 14:10:10,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 184 treesize of output 228 [2022-11-23 14:12:30,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:13:23,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:13:23,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:13:23,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:13:24,137 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:13:24,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:13:24,171 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:13:24,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-23 14:13:24,778 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:13:26,999 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6041#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (or (not (<= (+ |ULTIMATE.start_main_~x~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~x~0#1.base|))) (not (<= 0 |ULTIMATE.start_main_~x~0#1.offset|))) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~head~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~head~0#1.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-23 14:13:27,000 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:13:27,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:13:27,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 29 [2022-11-23 14:13:27,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296732511] [2022-11-23 14:13:27,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:13:27,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-23 14:13:27,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:13:27,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-23 14:13:27,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1471, Unknown=4, NotChecked=324, Total=1980 [2022-11-23 14:13:27,003 INFO L87 Difference]: Start difference. First operand 213 states and 282 transitions. Second operand has 30 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 30 states have internal predecessors, (63), 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) [2022-11-23 14:13:29,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:13:29,521 INFO L93 Difference]: Finished difference Result 266 states and 307 transitions. [2022-11-23 14:13:29,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 14:13:29,522 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 30 states have internal predecessors, (63), 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 21 [2022-11-23 14:13:29,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:13:29,523 INFO L225 Difference]: With dead ends: 266 [2022-11-23 14:13:29,523 INFO L226 Difference]: Without dead ends: 266 [2022-11-23 14:13:29,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=417, Invalid=2787, Unknown=4, NotChecked=452, Total=3660 [2022-11-23 14:13:29,525 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 645 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 2092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 636 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:13:29,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 409 Invalid, 2092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1275 Invalid, 0 Unknown, 636 Unchecked, 1.4s Time] [2022-11-23 14:13:29,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-23 14:13:29,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 213. [2022-11-23 14:13:29,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 192 states have (on average 1.3958333333333333) internal successors, (268), 212 states have internal predecessors, (268), 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) [2022-11-23 14:13:29,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 268 transitions. [2022-11-23 14:13:29,530 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 268 transitions. Word has length 21 [2022-11-23 14:13:29,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:13:29,530 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 268 transitions. [2022-11-23 14:13:29,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 30 states have internal predecessors, (63), 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) [2022-11-23 14:13:29,531 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 268 transitions. [2022-11-23 14:13:29,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 14:13:29,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:13:29,531 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:13:29,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:13:29,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-23 14:13:29,737 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:13:29,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:13:29,738 INFO L85 PathProgramCache]: Analyzing trace with hash 688793643, now seen corresponding path program 1 times [2022-11-23 14:13:29,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:13:29,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175427517] [2022-11-23 14:13:29,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:13:29,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:13:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:13:29,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:13:29,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:13:29,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175427517] [2022-11-23 14:13:29,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175427517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:13:29,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123278649] [2022-11-23 14:13:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:13:29,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:13:29,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:13:29,903 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:13:29,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 14:13:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:13:30,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 14:13:30,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:13:30,211 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:13:30,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-23 14:13:30,224 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:13:30,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-23 14:13:30,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:13:30,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:13:30,534 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-23 14:13:30,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2022-11-23 14:13:30,550 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-11-23 14:13:30,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2022-11-23 14:13:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:13:30,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123278649] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:13:30,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1168206438] [2022-11-23 14:13:30,578 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-23 14:13:30,578 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:13:30,578 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:13:30,578 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:13:30,579 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:13:30,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,599 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:13:30,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:13:30,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:13:30,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-23 14:13:30,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-23 14:13:30,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:13:30,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:13:30,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-23 14:13:30,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-23 14:13:30,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-23 14:13:30,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,771 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 35 [2022-11-23 14:13:30,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-23 14:13:30,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-23 14:13:30,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-23 14:13:30,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-23 14:13:30,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-23 14:13:30,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-23 14:13:30,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:30,943 INFO L321 Elim1Store]: treesize reduction 31, result has 29.5 percent of original size [2022-11-23 14:13:30,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 168 treesize of output 132 [2022-11-23 14:13:30,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 53 [2022-11-23 14:13:30,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:30,985 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 14:13:30,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 104 [2022-11-23 14:13:31,053 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:13:34,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1168206438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:13:34,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:13:34,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6, 10, 10] total 28 [2022-11-23 14:13:34,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404129591] [2022-11-23 14:13:34,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:13:34,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 14:13:34,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:13:34,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 14:13:34,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-11-23 14:13:34,072 INFO L87 Difference]: Start difference. First operand 213 states and 268 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 states have internal predecessors, (22), 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) [2022-11-23 14:13:34,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:13:34,815 INFO L93 Difference]: Finished difference Result 214 states and 268 transitions. [2022-11-23 14:13:34,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 14:13:34,815 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 states have internal predecessors, (22), 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 23 [2022-11-23 14:13:34,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:13:34,816 INFO L225 Difference]: With dead ends: 214 [2022-11-23 14:13:34,816 INFO L226 Difference]: Without dead ends: 214 [2022-11-23 14:13:34,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-11-23 14:13:34,817 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 15 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:13:34,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 110 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:13:34,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-23 14:13:34,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 213. [2022-11-23 14:13:34,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 192 states have (on average 1.390625) internal successors, (267), 212 states have internal predecessors, (267), 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) [2022-11-23 14:13:34,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 267 transitions. [2022-11-23 14:13:34,823 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 267 transitions. Word has length 23 [2022-11-23 14:13:34,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:13:34,823 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 267 transitions. [2022-11-23 14:13:34,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 states have internal predecessors, (22), 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) [2022-11-23 14:13:34,823 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 267 transitions. [2022-11-23 14:13:34,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-23 14:13:34,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:13:34,824 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:13:34,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:13:35,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:13:35,030 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2022-11-23 14:13:35,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:13:35,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1974411138, now seen corresponding path program 1 times [2022-11-23 14:13:35,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:13:35,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512350941] [2022-11-23 14:13:35,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:13:35,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:13:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:13:35,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:13:35,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:13:35,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512350941] [2022-11-23 14:13:35,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512350941] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:13:35,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865736636] [2022-11-23 14:13:35,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:13:35,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:13:35,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:13:35,539 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:13:35,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eae6df6b-ad7c-4139-9ae4-356b31975920/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 14:13:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:13:35,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-23 14:13:35,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:13:35,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 14:13:35,826 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:13:35,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-23 14:13:35,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:13:35,992 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:13:35,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-23 14:13:36,062 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:13:36,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2022-11-23 14:13:36,086 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 14:13:36,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-23 14:13:36,247 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-11-23 14:13:36,247 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 41 [2022-11-23 14:13:36,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-23 14:13:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:13:36,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:13:36,591 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc12#1.base_13| Int) (v_ArrVal_1124 (Array Int Int)) (v_ArrVal_1125 Int) (v_ArrVal_1122 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc12#1.base_13|) 0)) (= (select (store |c_#valid| |v_ULTIMATE.start_main_#t~malloc12#1.base_13| v_ArrVal_1125) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_1122))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_1124)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) 1))) is different from false [2022-11-23 14:13:36,600 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:13:36,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 34 [2022-11-23 14:13:36,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:13:36,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 156 treesize of output 143 [2022-11-23 14:13:36,627 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:13:36,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 126 [2022-11-23 14:13:36,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 114 [2022-11-23 14:13:45,826 WARN L233 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 159 DAG size of output: 46 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:13:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:13:46,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865736636] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:13:46,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [427287518] [2022-11-23 14:13:46,096 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-23 14:13:46,096 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:13:46,097 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:13:46,097 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:13:46,097 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:13:46,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,123 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:13:46,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:13:46,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-23 14:13:46,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:13:46,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:13:46,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:13:46,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2022-11-23 14:13:46,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-23 14:13:46,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-23 14:13:46,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-23 14:13:46,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,265 INFO L350 Elim1Store]: Elim1 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 29 treesize of output 35 [2022-11-23 14:13:46,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-23 14:13:46,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-23 14:13:46,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-23 14:13:46,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:46,357 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-23 14:13:46,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 125 [2022-11-23 14:13:46,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 94 [2022-11-23 14:13:46,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 33 [2022-11-23 14:13:46,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,434 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-23 14:13:46,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 42 [2022-11-23 14:13:46,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:46,477 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 14:13:46,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 143 treesize of output 100 [2022-11-23 14:13:46,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,507 INFO L321 Elim1Store]: treesize reduction 31, result has 26.2 percent of original size [2022-11-23 14:13:46,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 69 [2022-11-23 14:13:46,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:46,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:46,551 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-23 14:13:46,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 107 [2022-11-23 14:13:46,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,585 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-23 14:13:46,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 76 [2022-11-23 14:13:46,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,608 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-23 14:13:46,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 52 [2022-11-23 14:13:46,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:46,726 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-23 14:13:46,727 INFO L350 Elim1Store]: Elim1 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 154 treesize of output 118 [2022-11-23 14:13:46,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,749 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-23 14:13:46,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,775 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-23 14:13:46,849 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:46,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:46,934 INFO L321 Elim1Store]: treesize reduction 150, result has 18.9 percent of original size [2022-11-23 14:13:46,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 553 treesize of output 453 [2022-11-23 14:13:46,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:46,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:46,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:47,049 INFO L321 Elim1Store]: treesize reduction 154, result has 23.4 percent of original size [2022-11-23 14:13:47,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 537 treesize of output 522 [2022-11-23 14:13:47,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:47,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:47,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:47,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:47,088 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:47,168 INFO L321 Elim1Store]: treesize reduction 244, result has 11.9 percent of original size [2022-11-23 14:13:47,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 463 treesize of output 422 [2022-11-23 14:13:47,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:47,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:47,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:47,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:48,063 INFO L321 Elim1Store]: treesize reduction 364, result has 12.3 percent of original size [2022-11-23 14:13:48,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 1866 treesize of output 1172 [2022-11-23 14:13:48,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:48,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:48,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:48,204 INFO L321 Elim1Store]: treesize reduction 122, result has 26.1 percent of original size [2022-11-23 14:13:48,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 1766 treesize of output 1702 [2022-11-23 14:13:48,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:48,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:48,462 INFO L321 Elim1Store]: treesize reduction 436, result has 16.0 percent of original size [2022-11-23 14:13:48,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 19 case distinctions, treesize of input 1791 treesize of output 1576 [2022-11-23 14:13:49,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:49,438 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:49,438 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:49,642 INFO L321 Elim1Store]: treesize reduction 168, result has 27.0 percent of original size [2022-11-23 14:13:49,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 3649 treesize of output 2269 [2022-11-23 14:13:49,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:49,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:50,025 INFO L321 Elim1Store]: treesize reduction 310, result has 20.7 percent of original size [2022-11-23 14:13:50,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 19 case distinctions, treesize of input 2910 treesize of output 2492 [2022-11-23 14:13:50,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:50,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:50,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:50,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:13:50,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:13:50,272 INFO L321 Elim1Store]: treesize reduction 170, result has 17.1 percent of original size [2022-11-23 14:13:50,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 2598 treesize of output 2448 [2022-11-23 14:14:00,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:14:01,692 INFO L321 Elim1Store]: treesize reduction 278, result has 12.0 percent of original size [2022-11-23 14:14:01,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 12659 treesize of output 11694 [2022-11-23 14:14:06,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:14:06,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:14:06,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:14:06,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:14:06,225 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:14:08,329 INFO L321 Elim1Store]: treesize reduction 1344, result has 10.3 percent of original size [2022-11-23 14:14:08,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 4 disjoint index pairs (out of 105 index pairs), introduced 18 new quantified variables, introduced 116 case distinctions, treesize of input 14508 treesize of output 10377 [2022-11-23 14:14:08,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:14:08,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:14:08,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:14:10,838 INFO L321 Elim1Store]: treesize reduction 834, result has 7.4 percent of original size [2022-11-23 14:14:10,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 3 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 61 case distinctions, treesize of input 13580 treesize of output 11744 [2022-11-23 14:14:11,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:14:11,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:14:11,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:14:11,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:14:11,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:14:12,098 INFO L321 Elim1Store]: treesize reduction 170, result has 17.1 percent of original size [2022-11-23 14:14:12,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 13307 treesize of output 12663 [2022-11-23 14:15:07,359 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-23 14:15:07,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 84 [2022-11-23 14:15:07,391 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-23 14:15:07,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 96 [2022-11-23 14:15:07,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2022-11-23 14:15:07,711 INFO L321 Elim1Store]: treesize reduction 142, result has 47.6 percent of original size [2022-11-23 14:15:07,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 197 treesize of output 254 [2022-11-23 14:15:07,988 INFO L321 Elim1Store]: treesize reduction 132, result has 43.3 percent of original size [2022-11-23 14:15:07,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 184 treesize of output 228 [2022-11-23 14:16:55,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:17:15,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:17:15,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:17:15,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:17:15,785 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:17:15,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 14:17:15,827 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:17:15,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-23 14:17:15,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-23 14:17:15,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-23 14:17:15,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-23 14:17:15,887 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-23 14:17:15,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 84 [2022-11-23 14:17:15,924 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-23 14:17:15,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 96 [2022-11-23 14:17:15,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2022-11-23 14:17:16,235 INFO L321 Elim1Store]: treesize reduction 142, result has 47.6 percent of original size [2022-11-23 14:17:16,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 197 treesize of output 254 [2022-11-23 14:17:16,465 INFO L321 Elim1Store]: treesize reduction 132, result has 43.3 percent of original size [2022-11-23 14:17:16,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 184 treesize of output 228