./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-circular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-circular-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS --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 6c54160550402a2cf6139371c972b70bfa4a53acf207c90f67eed3e784812b38 --- 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-8393723 [2022-11-19 07:00:33,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:00:33,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:00:33,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:00:33,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:00:33,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:00:33,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:00:33,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:00:33,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:00:33,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:00:33,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:00:33,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:00:33,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:00:33,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:00:33,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:00:33,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:00:33,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:00:33,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:00:33,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:00:33,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:00:33,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:00:33,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:00:33,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:00:33,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:00:33,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:00:33,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:00:33,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:00:33,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:00:33,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:00:33,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:00:33,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:00:33,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:00:33,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:00:33,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:00:33,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:00:33,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:00:33,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:00:33,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:00:33,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:00:33,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:00:33,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:00:33,156 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 07:00:33,199 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:00:33,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:00:33,200 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:00:33,200 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:00:33,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:00:33,201 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:00:33,202 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:00:33,202 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:00:33,202 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:00:33,202 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:00:33,203 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:00:33,204 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:00:33,204 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:00:33,204 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:00:33,204 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:00:33,205 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:00:33,205 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:00:33,205 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:00:33,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 07:00:33,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 07:00:33,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:00:33,208 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:00:33,208 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:00:33,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:00:33,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:00:33,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:00:33,209 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 07:00:33,209 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 07:00:33,210 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 07:00:33,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:00:33,210 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:00:33,210 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:00:33,211 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:00:33,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:00:33,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:00:33,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:00:33,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:00:33,212 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:00:33,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:00:33,212 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:00:33,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:00:33,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:00:33,213 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_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c54160550402a2cf6139371c972b70bfa4a53acf207c90f67eed3e784812b38 [2022-11-19 07:00:33,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:00:33,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:00:33,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:00:33,568 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:00:33,569 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:00:33,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/forester-heap/sll-circular-1.i [2022-11-19 07:00:33,667 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/data/e57ab0241/5d8c8a6da4da4ec394d1f24bb60e27d7/FLAG6c0f84a86 [2022-11-19 07:00:34,196 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:00:34,197 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/sv-benchmarks/c/forester-heap/sll-circular-1.i [2022-11-19 07:00:34,214 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/data/e57ab0241/5d8c8a6da4da4ec394d1f24bb60e27d7/FLAG6c0f84a86 [2022-11-19 07:00:34,527 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/data/e57ab0241/5d8c8a6da4da4ec394d1f24bb60e27d7 [2022-11-19 07:00:34,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:00:34,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:00:34,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:00:34,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:00:34,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:00:34,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:00:34" (1/1) ... [2022-11-19 07:00:34,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b04301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:34, skipping insertion in model container [2022-11-19 07:00:34,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:00:34" (1/1) ... [2022-11-19 07:00:34,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:00:34,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:00:34,969 WARN L234 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_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/sv-benchmarks/c/forester-heap/sll-circular-1.i[22324,22337] [2022-11-19 07:00:34,978 WARN L234 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_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/sv-benchmarks/c/forester-heap/sll-circular-1.i[22430,22443] [2022-11-19 07:00:34,982 WARN L234 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_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/sv-benchmarks/c/forester-heap/sll-circular-1.i[22555,22568] [2022-11-19 07:00:34,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:00:35,012 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:00:35,085 WARN L234 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_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/sv-benchmarks/c/forester-heap/sll-circular-1.i[22324,22337] [2022-11-19 07:00:35,094 WARN L234 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_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/sv-benchmarks/c/forester-heap/sll-circular-1.i[22430,22443] [2022-11-19 07:00:35,096 WARN L234 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_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/sv-benchmarks/c/forester-heap/sll-circular-1.i[22555,22568] [2022-11-19 07:00:35,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:00:35,130 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:00:35,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:35 WrapperNode [2022-11-19 07:00:35,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:00:35,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:00:35,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:00:35,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:00:35,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:35" (1/1) ... [2022-11-19 07:00:35,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:35" (1/1) ... [2022-11-19 07:00:35,214 INFO L138 Inliner]: procedures = 119, calls = 28, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 119 [2022-11-19 07:00:35,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:00:35,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:00:35,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:00:35,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:00:35,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:35" (1/1) ... [2022-11-19 07:00:35,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:35" (1/1) ... [2022-11-19 07:00:35,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:35" (1/1) ... [2022-11-19 07:00:35,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:35" (1/1) ... [2022-11-19 07:00:35,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:35" (1/1) ... [2022-11-19 07:00:35,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:35" (1/1) ... [2022-11-19 07:00:35,265 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:35" (1/1) ... [2022-11-19 07:00:35,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:35" (1/1) ... [2022-11-19 07:00:35,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:00:35,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:00:35,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:00:35,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:00:35,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:35" (1/1) ... [2022-11-19 07:00:35,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:00:35,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:00:35,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:00:35,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:00:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:00:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:00:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:00:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:00:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:00:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:00:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:00:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:00:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:00:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:00:35,538 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:00:35,541 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:00:35,933 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:00:36,017 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:00:36,023 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-19 07:00:36,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:00:36 BoogieIcfgContainer [2022-11-19 07:00:36,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:00:36,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:00:36,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:00:36,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:00:36,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:00:34" (1/3) ... [2022-11-19 07:00:36,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446983f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:00:36, skipping insertion in model container [2022-11-19 07:00:36,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:00:35" (2/3) ... [2022-11-19 07:00:36,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446983f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:00:36, skipping insertion in model container [2022-11-19 07:00:36,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:00:36" (3/3) ... [2022-11-19 07:00:36,036 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-circular-1.i [2022-11-19 07:00:36,056 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:00:36,056 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2022-11-19 07:00:36,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:00:36,133 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;@6766381, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:00:36,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-11-19 07:00:36,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 43 states have (on average 2.511627906976744) internal successors, (108), 89 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) [2022-11-19 07:00:36,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 07:00:36,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:36,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 07:00:36,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:36,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:36,161 INFO L85 PathProgramCache]: Analyzing trace with hash 7351, now seen corresponding path program 1 times [2022-11-19 07:00:36,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:36,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515578438] [2022-11-19 07:00:36,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:36,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:36,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:36,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:36,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515578438] [2022-11-19 07:00:36,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515578438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:36,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:36,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:00:36,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457205159] [2022-11-19 07:00:36,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:36,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:36,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:36,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:36,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:36,543 INFO L87 Difference]: Start difference. First operand has 90 states, 43 states have (on average 2.511627906976744) internal successors, (108), 89 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) 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) [2022-11-19 07:00:36,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:36,703 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2022-11-19 07:00:36,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:36,705 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 [2022-11-19 07:00:36,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:36,715 INFO L225 Difference]: With dead ends: 96 [2022-11-19 07:00:36,720 INFO L226 Difference]: Without dead ends: 95 [2022-11-19 07:00:36,722 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 [2022-11-19 07:00:36,726 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 77 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:36,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 61 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:36,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-19 07:00:36,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 85. [2022-11-19 07:00:36,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 43 states have (on average 2.116279069767442) internal successors, (91), 84 states have internal predecessors, (91), 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) [2022-11-19 07:00:36,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2022-11-19 07:00:36,784 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 2 [2022-11-19 07:00:36,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:36,785 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2022-11-19 07:00:36,785 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) [2022-11-19 07:00:36,787 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2022-11-19 07:00:36,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 07:00:36,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:36,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 07:00:36,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:00:36,788 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:36,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:36,789 INFO L85 PathProgramCache]: Analyzing trace with hash 7352, now seen corresponding path program 1 times [2022-11-19 07:00:36,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:36,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822109918] [2022-11-19 07:00:36,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:36,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:36,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:36,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:36,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822109918] [2022-11-19 07:00:36,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822109918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:36,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:36,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:00:36,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083939812] [2022-11-19 07:00:36,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:36,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:36,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:36,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:36,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:36,931 INFO L87 Difference]: Start difference. First operand 85 states and 91 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) [2022-11-19 07:00:37,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:37,044 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2022-11-19 07:00:37,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:37,045 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 [2022-11-19 07:00:37,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:37,046 INFO L225 Difference]: With dead ends: 93 [2022-11-19 07:00:37,046 INFO L226 Difference]: Without dead ends: 93 [2022-11-19 07:00:37,047 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 [2022-11-19 07:00:37,048 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 75 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:37,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 64 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:37,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-19 07:00:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2022-11-19 07:00:37,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 43 states have (on average 2.0232558139534884) internal successors, (87), 80 states have internal predecessors, (87), 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) [2022-11-19 07:00:37,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2022-11-19 07:00:37,056 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 2 [2022-11-19 07:00:37,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:37,057 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2022-11-19 07:00:37,057 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) [2022-11-19 07:00:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2022-11-19 07:00:37,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:00:37,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:37,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 07:00:37,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:00:37,059 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:37,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:37,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1796172360, now seen corresponding path program 1 times [2022-11-19 07:00:37,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:37,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514291312] [2022-11-19 07:00:37,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:37,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:37,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:37,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:37,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514291312] [2022-11-19 07:00:37,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514291312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:37,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:37,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:00:37,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570638067] [2022-11-19 07:00:37,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:37,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:00:37,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:37,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:00:37,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:00:37,145 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-19 07:00:37,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:37,266 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2022-11-19 07:00:37,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:00:37,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2022-11-19 07:00:37,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:37,268 INFO L225 Difference]: With dead ends: 79 [2022-11-19 07:00:37,268 INFO L226 Difference]: Without dead ends: 79 [2022-11-19 07:00:37,269 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 [2022-11-19 07:00:37,270 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 120 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:37,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 41 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:37,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-19 07:00:37,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2022-11-19 07:00:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 69 states have internal predecessors, (76), 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) [2022-11-19 07:00:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2022-11-19 07:00:37,277 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 6 [2022-11-19 07:00:37,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:37,277 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2022-11-19 07:00:37,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-19 07:00:37,278 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2022-11-19 07:00:37,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:00:37,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:37,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 07:00:37,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:00:37,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:37,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:37,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1796172359, now seen corresponding path program 1 times [2022-11-19 07:00:37,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:37,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900563972] [2022-11-19 07:00:37,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:37,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:37,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:37,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:37,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900563972] [2022-11-19 07:00:37,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900563972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:37,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:37,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:00:37,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094036692] [2022-11-19 07:00:37,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:37,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:00:37,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:37,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:00:37,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:00:37,447 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-19 07:00:37,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:37,572 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2022-11-19 07:00:37,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:00:37,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-19 07:00:37,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:37,573 INFO L225 Difference]: With dead ends: 87 [2022-11-19 07:00:37,574 INFO L226 Difference]: Without dead ends: 87 [2022-11-19 07:00:37,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:00:37,575 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 73 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:37,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 80 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:37,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-19 07:00:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 75. [2022-11-19 07:00:37,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.7083333333333333) internal successors, (82), 74 states have internal predecessors, (82), 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) [2022-11-19 07:00:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2022-11-19 07:00:37,583 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 6 [2022-11-19 07:00:37,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:37,584 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2022-11-19 07:00:37,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-19 07:00:37,585 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2022-11-19 07:00:37,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:00:37,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:37,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:37,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:00:37,586 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:37,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:37,587 INFO L85 PathProgramCache]: Analyzing trace with hash 455403045, now seen corresponding path program 1 times [2022-11-19 07:00:37,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:37,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943329504] [2022-11-19 07:00:37,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:37,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:37,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:37,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:37,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943329504] [2022-11-19 07:00:37,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943329504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:37,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:37,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:00:37,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757395261] [2022-11-19 07:00:37,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:37,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:00:37,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:37,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:00:37,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:00:37,740 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:37,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:37,873 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2022-11-19 07:00:37,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:00:37,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 07:00:37,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:37,875 INFO L225 Difference]: With dead ends: 74 [2022-11-19 07:00:37,875 INFO L226 Difference]: Without dead ends: 74 [2022-11-19 07:00:37,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:00:37,877 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 51 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:37,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 106 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:37,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-19 07:00:37,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-19 07:00:37,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 48 states have (on average 1.6875) internal successors, (81), 73 states have internal predecessors, (81), 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) [2022-11-19 07:00:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2022-11-19 07:00:37,884 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 8 [2022-11-19 07:00:37,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:37,885 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2022-11-19 07:00:37,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:37,885 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2022-11-19 07:00:37,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:00:37,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:37,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:37,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:00:37,887 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:37,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:37,887 INFO L85 PathProgramCache]: Analyzing trace with hash 455403046, now seen corresponding path program 1 times [2022-11-19 07:00:37,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:37,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933555073] [2022-11-19 07:00:37,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:37,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:38,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:38,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:38,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933555073] [2022-11-19 07:00:38,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933555073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:38,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:38,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:00:38,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311364762] [2022-11-19 07:00:38,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:38,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:00:38,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:38,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:00:38,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:00:38,105 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:38,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:38,271 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2022-11-19 07:00:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:00:38,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 07:00:38,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:38,274 INFO L225 Difference]: With dead ends: 70 [2022-11-19 07:00:38,274 INFO L226 Difference]: Without dead ends: 70 [2022-11-19 07:00:38,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:00:38,285 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 16 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:38,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 151 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:38,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-19 07:00:38,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2022-11-19 07:00:38,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.627906976744186) internal successors, (70), 63 states have internal predecessors, (70), 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) [2022-11-19 07:00:38,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2022-11-19 07:00:38,290 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 8 [2022-11-19 07:00:38,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:38,290 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2022-11-19 07:00:38,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:38,291 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2022-11-19 07:00:38,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:00:38,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:38,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:38,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:00:38,292 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:38,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:38,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1226932117, now seen corresponding path program 1 times [2022-11-19 07:00:38,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:38,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980997479] [2022-11-19 07:00:38,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:38,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:38,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:38,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980997479] [2022-11-19 07:00:38,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980997479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:38,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:38,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:00:38,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924554985] [2022-11-19 07:00:38,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:38,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:00:38,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:38,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:00:38,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:00:38,575 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2022-11-19 07:00:38,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:38,821 INFO L93 Difference]: Finished difference Result 144 states and 155 transitions. [2022-11-19 07:00:38,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:00:38,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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 [2022-11-19 07:00:38,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:38,824 INFO L225 Difference]: With dead ends: 144 [2022-11-19 07:00:38,825 INFO L226 Difference]: Without dead ends: 144 [2022-11-19 07:00:38,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:00:38,829 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 174 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:38,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 227 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:00:38,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-19 07:00:38,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 69. [2022-11-19 07:00:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 68 states have internal predecessors, (76), 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) [2022-11-19 07:00:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2022-11-19 07:00:38,841 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 9 [2022-11-19 07:00:38,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:38,842 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2022-11-19 07:00:38,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2022-11-19 07:00:38,842 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2022-11-19 07:00:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 07:00:38,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:38,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:38,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:00:38,843 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:38,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:38,844 INFO L85 PathProgramCache]: Analyzing trace with hash -619805874, now seen corresponding path program 1 times [2022-11-19 07:00:38,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:38,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643473516] [2022-11-19 07:00:38,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:38,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:39,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:39,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:39,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643473516] [2022-11-19 07:00:39,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643473516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:39,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:39,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:00:39,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955283705] [2022-11-19 07:00:39,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:39,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:00:39,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:39,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:00:39,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:00:39,157 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:39,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:39,356 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2022-11-19 07:00:39,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:00:39,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-19 07:00:39,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:39,358 INFO L225 Difference]: With dead ends: 105 [2022-11-19 07:00:39,358 INFO L226 Difference]: Without dead ends: 105 [2022-11-19 07:00:39,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:00:39,359 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 263 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:39,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 81 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:39,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-19 07:00:39,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 84. [2022-11-19 07:00:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 63 states have (on average 1.6825396825396826) internal successors, (106), 83 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) [2022-11-19 07:00:39,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2022-11-19 07:00:39,364 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 10 [2022-11-19 07:00:39,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:39,364 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2022-11-19 07:00:39,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:39,373 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2022-11-19 07:00:39,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 07:00:39,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:39,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:39,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:00:39,374 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:39,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:39,375 INFO L85 PathProgramCache]: Analyzing trace with hash -619805873, now seen corresponding path program 1 times [2022-11-19 07:00:39,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:39,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018111887] [2022-11-19 07:00:39,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:39,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:39,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:39,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018111887] [2022-11-19 07:00:39,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018111887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:39,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:39,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:00:39,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075717653] [2022-11-19 07:00:39,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:39,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:00:39,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:39,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:00:39,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:00:39,750 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:39,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:39,975 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2022-11-19 07:00:39,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:00:39,975 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-19 07:00:39,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:39,976 INFO L225 Difference]: With dead ends: 118 [2022-11-19 07:00:39,976 INFO L226 Difference]: Without dead ends: 118 [2022-11-19 07:00:39,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:00:39,977 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 248 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:39,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 103 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:00:39,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-19 07:00:39,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 91. [2022-11-19 07:00:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 90 states have internal predecessors, (109), 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) [2022-11-19 07:00:39,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2022-11-19 07:00:39,982 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 10 [2022-11-19 07:00:39,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:39,983 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2022-11-19 07:00:39,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:39,984 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2022-11-19 07:00:39,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 07:00:39,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:39,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:39,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:00:39,985 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:39,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:39,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1648557102, now seen corresponding path program 1 times [2022-11-19 07:00:39,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:39,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536839132] [2022-11-19 07:00:39,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:39,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:40,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:40,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536839132] [2022-11-19 07:00:40,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536839132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:40,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:40,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:00:40,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721272063] [2022-11-19 07:00:40,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:40,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:00:40,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:40,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:00:40,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:00:40,079 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:40,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:40,190 INFO L93 Difference]: Finished difference Result 91 states and 109 transitions. [2022-11-19 07:00:40,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:00:40,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-19 07:00:40,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:40,192 INFO L225 Difference]: With dead ends: 91 [2022-11-19 07:00:40,192 INFO L226 Difference]: Without dead ends: 91 [2022-11-19 07:00:40,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:00:40,193 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 12 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:40,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 175 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:40,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-19 07:00:40,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2022-11-19 07:00:40,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 69 states have (on average 1.5507246376811594) internal successors, (107), 88 states have internal predecessors, (107), 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) [2022-11-19 07:00:40,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 107 transitions. [2022-11-19 07:00:40,197 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 107 transitions. Word has length 12 [2022-11-19 07:00:40,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:40,198 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 107 transitions. [2022-11-19 07:00:40,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:40,198 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 107 transitions. [2022-11-19 07:00:40,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:00:40,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:40,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:40,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:00:40,200 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:40,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:40,200 INFO L85 PathProgramCache]: Analyzing trace with hash -572309245, now seen corresponding path program 1 times [2022-11-19 07:00:40,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:40,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555353134] [2022-11-19 07:00:40,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:40,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:40,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:40,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:40,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555353134] [2022-11-19 07:00:40,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555353134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:40,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:40,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:00:40,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684857504] [2022-11-19 07:00:40,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:40,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:00:40,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:40,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:00:40,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:00:40,532 INFO L87 Difference]: Start difference. First operand 89 states and 107 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2022-11-19 07:00:40,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:40,882 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2022-11-19 07:00:40,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:00:40,883 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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 [2022-11-19 07:00:40,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:40,884 INFO L225 Difference]: With dead ends: 119 [2022-11-19 07:00:40,884 INFO L226 Difference]: Without dead ends: 119 [2022-11-19 07:00:40,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:00:40,885 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 178 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:40,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 188 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:00:40,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-19 07:00:40,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 92. [2022-11-19 07:00:40,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 91 states have internal predecessors, (112), 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) [2022-11-19 07:00:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 112 transitions. [2022-11-19 07:00:40,889 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 112 transitions. Word has length 13 [2022-11-19 07:00:40,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:40,889 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 112 transitions. [2022-11-19 07:00:40,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2022-11-19 07:00:40,889 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 112 transitions. [2022-11-19 07:00:40,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:00:40,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:40,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:40,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:00:40,890 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:40,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:40,898 INFO L85 PathProgramCache]: Analyzing trace with hash -572309244, now seen corresponding path program 1 times [2022-11-19 07:00:40,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:40,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784111555] [2022-11-19 07:00:40,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:40,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:41,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:41,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784111555] [2022-11-19 07:00:41,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784111555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:41,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:41,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:00:41,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998817969] [2022-11-19 07:00:41,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:41,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:00:41,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:41,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:00:41,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:00:41,281 INFO L87 Difference]: Start difference. First operand 92 states and 112 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2022-11-19 07:00:41,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:41,613 INFO L93 Difference]: Finished difference Result 131 states and 145 transitions. [2022-11-19 07:00:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:00:41,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 [2022-11-19 07:00:41,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:41,614 INFO L225 Difference]: With dead ends: 131 [2022-11-19 07:00:41,614 INFO L226 Difference]: Without dead ends: 131 [2022-11-19 07:00:41,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:00:41,615 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 148 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:41,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 183 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:00:41,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-19 07:00:41,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 92. [2022-11-19 07:00:41,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.5416666666666667) internal successors, (111), 91 states have internal predecessors, (111), 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) [2022-11-19 07:00:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 111 transitions. [2022-11-19 07:00:41,619 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 111 transitions. Word has length 13 [2022-11-19 07:00:41,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:41,620 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 111 transitions. [2022-11-19 07:00:41,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2022-11-19 07:00:41,620 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 111 transitions. [2022-11-19 07:00:41,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:00:41,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:41,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:41,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 07:00:41,622 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:41,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:41,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1836105499, now seen corresponding path program 1 times [2022-11-19 07:00:41,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:41,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752910846] [2022-11-19 07:00:41,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:41,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:41,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:41,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:41,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752910846] [2022-11-19 07:00:41,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752910846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:41,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:41,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:00:41,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806718678] [2022-11-19 07:00:41,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:41,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:41,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:41,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:41,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:41,662 INFO L87 Difference]: Start difference. First operand 92 states and 111 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:41,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:41,709 INFO L93 Difference]: Finished difference Result 150 states and 173 transitions. [2022-11-19 07:00:41,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:41,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-19 07:00:41,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:41,712 INFO L225 Difference]: With dead ends: 150 [2022-11-19 07:00:41,712 INFO L226 Difference]: Without dead ends: 150 [2022-11-19 07:00:41,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:41,713 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 55 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:41,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 105 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:00:41,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-19 07:00:41,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 102. [2022-11-19 07:00:41,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 82 states have (on average 1.5) internal successors, (123), 101 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) [2022-11-19 07:00:41,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 123 transitions. [2022-11-19 07:00:41,724 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 123 transitions. Word has length 15 [2022-11-19 07:00:41,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:41,725 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 123 transitions. [2022-11-19 07:00:41,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:41,725 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 123 transitions. [2022-11-19 07:00:41,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 07:00:41,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:41,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:41,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 07:00:41,731 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:41,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:41,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1377393901, now seen corresponding path program 1 times [2022-11-19 07:00:41,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:41,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869831914] [2022-11-19 07:00:41,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:41,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:41,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:41,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869831914] [2022-11-19 07:00:41,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869831914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:41,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:41,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:00:41,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789904761] [2022-11-19 07:00:41,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:41,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:00:41,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:41,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:00:41,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:00:41,934 INFO L87 Difference]: Start difference. First operand 102 states and 123 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2022-11-19 07:00:42,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:42,129 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2022-11-19 07:00:42,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:00:42,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 [2022-11-19 07:00:42,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:42,131 INFO L225 Difference]: With dead ends: 141 [2022-11-19 07:00:42,131 INFO L226 Difference]: Without dead ends: 141 [2022-11-19 07:00:42,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:00:42,132 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 238 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:42,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 145 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:42,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-19 07:00:42,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 105. [2022-11-19 07:00:42,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 85 states have (on average 1.4941176470588236) internal successors, (127), 104 states have internal predecessors, (127), 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) [2022-11-19 07:00:42,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2022-11-19 07:00:42,153 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 127 transitions. Word has length 16 [2022-11-19 07:00:42,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:42,154 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 127 transitions. [2022-11-19 07:00:42,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2022-11-19 07:00:42,154 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 127 transitions. [2022-11-19 07:00:42,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 07:00:42,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:42,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:42,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 07:00:42,155 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:42,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:42,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1358189599, now seen corresponding path program 1 times [2022-11-19 07:00:42,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:42,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688868789] [2022-11-19 07:00:42,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:42,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:42,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:42,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688868789] [2022-11-19 07:00:42,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688868789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:42,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:42,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:00:42,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331822536] [2022-11-19 07:00:42,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:42,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:42,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:42,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:42,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:42,191 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2022-11-19 07:00:42,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:42,217 INFO L93 Difference]: Finished difference Result 107 states and 129 transitions. [2022-11-19 07:00:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:42,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 [2022-11-19 07:00:42,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:42,219 INFO L225 Difference]: With dead ends: 107 [2022-11-19 07:00:42,219 INFO L226 Difference]: Without dead ends: 107 [2022-11-19 07:00:42,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:42,220 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:42,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:00:42,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-19 07:00:42,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-11-19 07:00:42,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 87 states have (on average 1.4827586206896552) internal successors, (129), 106 states have internal predecessors, (129), 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) [2022-11-19 07:00:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 129 transitions. [2022-11-19 07:00:42,224 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 129 transitions. Word has length 16 [2022-11-19 07:00:42,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:42,224 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 129 transitions. [2022-11-19 07:00:42,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2022-11-19 07:00:42,225 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 129 transitions. [2022-11-19 07:00:42,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:00:42,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:42,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:42,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 07:00:42,226 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:42,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:42,227 INFO L85 PathProgramCache]: Analyzing trace with hash -250390085, now seen corresponding path program 1 times [2022-11-19 07:00:42,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:42,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414117780] [2022-11-19 07:00:42,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:42,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:42,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:42,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:42,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414117780] [2022-11-19 07:00:42,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414117780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:42,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:42,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:00:42,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806877245] [2022-11-19 07:00:42,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:42,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:00:42,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:42,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:00:42,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:00:42,449 INFO L87 Difference]: Start difference. First operand 107 states and 129 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) 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) [2022-11-19 07:00:42,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:42,710 INFO L93 Difference]: Finished difference Result 150 states and 168 transitions. [2022-11-19 07:00:42,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:00:42,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) 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 [2022-11-19 07:00:42,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:42,711 INFO L225 Difference]: With dead ends: 150 [2022-11-19 07:00:42,712 INFO L226 Difference]: Without dead ends: 150 [2022-11-19 07:00:42,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:00:42,713 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 217 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:42,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 189 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:00:42,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-19 07:00:42,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 110. [2022-11-19 07:00:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 90 states have (on average 1.4666666666666666) internal successors, (132), 109 states have internal predecessors, (132), 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) [2022-11-19 07:00:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 132 transitions. [2022-11-19 07:00:42,717 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 132 transitions. Word has length 17 [2022-11-19 07:00:42,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:42,718 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 132 transitions. [2022-11-19 07:00:42,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) 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) [2022-11-19 07:00:42,718 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 132 transitions. [2022-11-19 07:00:42,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:00:42,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:42,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:42,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-19 07:00:42,720 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:42,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:42,720 INFO L85 PathProgramCache]: Analyzing trace with hash -845748512, now seen corresponding path program 1 times [2022-11-19 07:00:42,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:42,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790348722] [2022-11-19 07:00:42,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:42,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:43,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:43,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790348722] [2022-11-19 07:00:43,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790348722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:43,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:43,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:00:43,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843564044] [2022-11-19 07:00:43,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:43,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:00:43,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:43,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:00:43,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:00:43,073 INFO L87 Difference]: Start difference. First operand 110 states and 132 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) 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) [2022-11-19 07:00:43,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:43,327 INFO L93 Difference]: Finished difference Result 131 states and 148 transitions. [2022-11-19 07:00:43,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:00:43,328 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) 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 [2022-11-19 07:00:43,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:43,328 INFO L225 Difference]: With dead ends: 131 [2022-11-19 07:00:43,328 INFO L226 Difference]: Without dead ends: 131 [2022-11-19 07:00:43,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:00:43,329 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 196 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:43,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 151 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:00:43,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-19 07:00:43,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 114. [2022-11-19 07:00:43,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 94 states have (on average 1.4680851063829787) internal successors, (138), 113 states have internal predecessors, (138), 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) [2022-11-19 07:00:43,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 138 transitions. [2022-11-19 07:00:43,333 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 138 transitions. Word has length 17 [2022-11-19 07:00:43,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:43,333 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 138 transitions. [2022-11-19 07:00:43,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) 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) [2022-11-19 07:00:43,333 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 138 transitions. [2022-11-19 07:00:43,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:00:43,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:43,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:43,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-19 07:00:43,334 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:43,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:43,334 INFO L85 PathProgramCache]: Analyzing trace with hash -845748511, now seen corresponding path program 1 times [2022-11-19 07:00:43,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:43,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753272308] [2022-11-19 07:00:43,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:43,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:43,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:43,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753272308] [2022-11-19 07:00:43,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753272308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:43,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:43,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:00:43,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281400043] [2022-11-19 07:00:43,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:43,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:00:43,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:43,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:00:43,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:00:43,720 INFO L87 Difference]: Start difference. First operand 114 states and 138 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:43,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:43,977 INFO L93 Difference]: Finished difference Result 143 states and 159 transitions. [2022-11-19 07:00:43,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:00:43,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-19 07:00:43,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:43,979 INFO L225 Difference]: With dead ends: 143 [2022-11-19 07:00:43,979 INFO L226 Difference]: Without dead ends: 143 [2022-11-19 07:00:43,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:00:43,979 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 181 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:43,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 153 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:00:43,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-19 07:00:43,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 114. [2022-11-19 07:00:43,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 94 states have (on average 1.4574468085106382) internal successors, (137), 113 states have internal predecessors, (137), 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) [2022-11-19 07:00:43,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions. [2022-11-19 07:00:43,983 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 17 [2022-11-19 07:00:43,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:43,984 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 137 transitions. [2022-11-19 07:00:43,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:00:43,984 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions. [2022-11-19 07:00:43,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:00:43,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:43,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:43,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-19 07:00:43,985 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:43,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:43,986 INFO L85 PathProgramCache]: Analyzing trace with hash 825618768, now seen corresponding path program 1 times [2022-11-19 07:00:43,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:43,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361503006] [2022-11-19 07:00:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:43,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:44,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:44,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:44,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361503006] [2022-11-19 07:00:44,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361503006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:44,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:44,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:00:44,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185976654] [2022-11-19 07:00:44,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:44,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:00:44,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:44,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:00:44,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:00:44,205 INFO L87 Difference]: Start difference. First operand 114 states and 137 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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) [2022-11-19 07:00:44,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:44,422 INFO L93 Difference]: Finished difference Result 130 states and 146 transitions. [2022-11-19 07:00:44,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:00:44,422 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 [2022-11-19 07:00:44,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:44,423 INFO L225 Difference]: With dead ends: 130 [2022-11-19 07:00:44,423 INFO L226 Difference]: Without dead ends: 126 [2022-11-19 07:00:44,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:00:44,424 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 113 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:44,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 202 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:00:44,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-19 07:00:44,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 112. [2022-11-19 07:00:44,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 92 states have (on average 1.4565217391304348) internal successors, (134), 111 states have internal predecessors, (134), 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) [2022-11-19 07:00:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 134 transitions. [2022-11-19 07:00:44,427 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 134 transitions. Word has length 18 [2022-11-19 07:00:44,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:44,427 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 134 transitions. [2022-11-19 07:00:44,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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) [2022-11-19 07:00:44,428 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 134 transitions. [2022-11-19 07:00:44,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:00:44,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:44,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:44,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-19 07:00:44,428 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:44,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:44,429 INFO L85 PathProgramCache]: Analyzing trace with hash -449721214, now seen corresponding path program 1 times [2022-11-19 07:00:44,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:44,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839001531] [2022-11-19 07:00:44,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:44,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:44,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:44,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839001531] [2022-11-19 07:00:44,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839001531] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:00:44,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951770978] [2022-11-19 07:00:44,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:44,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:00:44,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:00:44,719 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:00:44,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:00:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:44,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:00:44,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:44,928 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 17 treesize of output 9 [2022-11-19 07:00:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:44,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:00:44,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951770978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:44,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:00:44,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-19 07:00:44,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977564783] [2022-11-19 07:00:44,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:44,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:00:44,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:44,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:00:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:00:44,937 INFO L87 Difference]: Start difference. First operand 112 states and 134 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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) [2022-11-19 07:00:45,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:45,068 INFO L93 Difference]: Finished difference Result 114 states and 135 transitions. [2022-11-19 07:00:45,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:00:45,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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 [2022-11-19 07:00:45,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:45,070 INFO L225 Difference]: With dead ends: 114 [2022-11-19 07:00:45,070 INFO L226 Difference]: Without dead ends: 114 [2022-11-19 07:00:45,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:00:45,071 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 65 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:45,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 84 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:00:45,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-19 07:00:45,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2022-11-19 07:00:45,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 93 states have (on average 1.4516129032258065) internal successors, (135), 112 states have internal predecessors, (135), 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) [2022-11-19 07:00:45,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 135 transitions. [2022-11-19 07:00:45,080 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 135 transitions. Word has length 18 [2022-11-19 07:00:45,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:45,081 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 135 transitions. [2022-11-19 07:00:45,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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) [2022-11-19 07:00:45,081 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 135 transitions. [2022-11-19 07:00:45,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:00:45,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:45,082 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:45,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:00:45,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:00:45,289 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:00:45,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:45,289 INFO L85 PathProgramCache]: Analyzing trace with hash -564966245, now seen corresponding path program 1 times [2022-11-19 07:00:45,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:45,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337500624] [2022-11-19 07:00:45,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:45,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:45,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:45,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:45,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337500624] [2022-11-19 07:00:45,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337500624] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:00:45,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489471446] [2022-11-19 07:00:45,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:45,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:00:45,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:00:45,602 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:00:45,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:00:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:45,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-19 07:00:45,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:00:45,736 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 [2022-11-19 07:00:45,807 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-19 07:00:45,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-19 07:00:45,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:00:45,943 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 07:00:45,943 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 30 treesize of output 28 [2022-11-19 07:00:45,978 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 07:00:45,978 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 30 treesize of output 28 [2022-11-19 07:00:46,041 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 07:00:46,041 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 27 treesize of output 28 [2022-11-19 07:00:46,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-19 07:00:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:46,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:00:46,171 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_491 (Array Int Int))) (not (= 0 (select (select (store |c_#memory_$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_491) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2022-11-19 07:00:46,179 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:00:46,180 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 19 treesize of output 20 [2022-11-19 07:00:46,189 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:00:46,190 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 33 treesize of output 36 [2022-11-19 07:00:46,195 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 20 treesize of output 18 [2022-11-19 07:00:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:00:46,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489471446] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:00:46,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [36220613] [2022-11-19 07:00:46,378 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-19 07:00:46,379 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:00:46,383 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:00:46,389 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:00:46,390 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:00:46,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,438 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 [2022-11-19 07:00:46,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,458 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 [2022-11-19 07:00:46,468 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 [2022-11-19 07:00:46,476 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 [2022-11-19 07:00:46,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,497 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 [2022-11-19 07:00:46,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,509 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 27 treesize of output 11 [2022-11-19 07:00:46,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,522 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 27 treesize of output 11 [2022-11-19 07:00:46,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,586 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 [2022-11-19 07:00:46,626 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 [2022-11-19 07:00:46,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,642 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 [2022-11-19 07:00:46,655 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 11 [2022-11-19 07:00:46,705 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:00:46,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 47 [2022-11-19 07:00:46,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,724 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 26 treesize of output 21 [2022-11-19 07:00:46,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,744 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 39 treesize of output 33 [2022-11-19 07:00:46,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,792 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:00:46,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 50 [2022-11-19 07:00:46,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,812 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 [2022-11-19 07:00:46,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,831 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 34 treesize of output 21 [2022-11-19 07:00:46,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,906 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 [2022-11-19 07:00:46,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,952 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 26 treesize of output 21 [2022-11-19 07:00:46,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,971 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 26 treesize of output 21 [2022-11-19 07:00:46,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:46,992 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 [2022-11-19 07:00:47,081 INFO L321 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2022-11-19 07:00:47,081 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 3 case distinctions, treesize of input 199 treesize of output 120 [2022-11-19 07:00:47,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:47,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:47,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:47,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2022-11-19 07:00:47,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:47,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:47,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:47,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:47,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:47,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:47,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:47,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-19 07:00:47,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:47,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:47,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:47,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:47,344 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-19 07:00:47,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 482 treesize of output 367 [2022-11-19 07:00:47,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:47,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:47,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:47,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:47,374 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-19 07:00:47,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 482 treesize of output 464 [2022-11-19 07:00:47,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:47,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:47,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:47,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:47,448 INFO L321 Elim1Store]: treesize reduction 50, result has 36.7 percent of original size [2022-11-19 07:00:47,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 476 treesize of output 478 [2022-11-19 07:00:47,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:47,873 INFO L321 Elim1Store]: treesize reduction 288, result has 8.9 percent of original size [2022-11-19 07:00:47,874 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 484 treesize of output 475 [2022-11-19 07:00:48,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,119 INFO L321 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2022-11-19 07:00:48,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 593 treesize of output 454 [2022-11-19 07:00:48,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:48,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,183 INFO L321 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2022-11-19 07:00:48,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 550 treesize of output 536 [2022-11-19 07:00:48,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,247 INFO L321 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2022-11-19 07:00:48,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 537 treesize of output 527 [2022-11-19 07:00:48,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,965 INFO L321 Elim1Store]: treesize reduction 100, result has 20.6 percent of original size [2022-11-19 07:00:48,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 863 treesize of output 513 [2022-11-19 07:00:49,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:49,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:49,166 INFO L321 Elim1Store]: treesize reduction 344, result has 14.9 percent of original size [2022-11-19 07:00:49,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 747 treesize of output 725 [2022-11-19 07:00:49,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:49,307 INFO L321 Elim1Store]: treesize reduction 152, result has 23.2 percent of original size [2022-11-19 07:00:49,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 778 treesize of output 726 [2022-11-19 07:00:49,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:00:49,592 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 [2022-11-19 07:00:49,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:00:49,639 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:00:49,639 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 [2022-11-19 07:00:49,676 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:00:49,676 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 [2022-11-19 07:00:49,704 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 [2022-11-19 07:00:49,716 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 25 treesize of output 13 [2022-11-19 07:00:49,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:00:49,973 INFO L321 Elim1Store]: treesize reduction 52, result has 60.0 percent of original size [2022-11-19 07:00:49,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 305 treesize of output 306 [2022-11-19 07:00:50,091 INFO L321 Elim1Store]: treesize reduction 100, result has 36.7 percent of original size [2022-11-19 07:00:50,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 237 treesize of output 263 [2022-11-19 07:00:50,246 INFO L321 Elim1Store]: treesize reduction 52, result has 60.0 percent of original size [2022-11-19 07:00:50,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 221 treesize of output 270 [2022-11-19 07:06:11,130 WARN L233 SmtUtils]: Spent 29.84s on a formula simplification that was a NOOP. DAG size: 5817 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 07:06:41,082 WARN L233 SmtUtils]: Spent 16.19s on a formula simplification that was a NOOP. DAG size: 5810 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 07:10:09,070 WARN L233 SmtUtils]: Spent 10.73s on a formula simplification. DAG size of input: 1969 DAG size of output: 1967 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 07:14:50,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:14:50,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:14:50,111 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 [2022-11-19 07:14:50,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:14:50,188 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 [2022-11-19 07:14:50,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:14:50,262 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:14:50,262 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 [2022-11-19 07:14:50,290 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:14:50,290 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 [2022-11-19 07:14:50,323 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 [2022-11-19 07:14:50,328 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 [2022-11-19 07:14:50,337 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 [2022-11-19 07:14:50,344 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:14:51,319 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4587#(and (= |ULTIMATE.start_main_~state~0#1| 1) (<= (+ |ULTIMATE.start_main_~head~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~head~0#1.base|)) (= |ULTIMATE.start_main_~x~0#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) |ULTIMATE.start_main_~x~0#1.offset|) (= |ULTIMATE.start_main_~x~0#1.base| 0) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~head~0#1.base|) 1) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|)) (exists ((|v_ULTIMATE.start_main_~x~0#1.base_86| Int) (|v_ULTIMATE.start_main_~x~0#1.offset_72| Int)) (and (= |ULTIMATE.start_main_~state~0#1| (select (select |#memory_int| |v_ULTIMATE.start_main_~x~0#1.base_86|) (+ 4 |v_ULTIMATE.start_main_~x~0#1.offset_72|))) (<= (+ 8 |v_ULTIMATE.start_main_~x~0#1.offset_72|) (select |#length| |v_ULTIMATE.start_main_~x~0#1.base_86|)) (<= 0 |v_ULTIMATE.start_main_~x~0#1.offset_72|) (= (select |#valid| |v_ULTIMATE.start_main_~x~0#1.base_86|) 1))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:14:51,319 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:14:51,319 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:14:51,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2022-11-19 07:14:51,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978689278] [2022-11-19 07:14:51,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:14:51,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 07:14:51,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:14:51,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 07:14:51,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=880, Unknown=5, NotChecked=60, Total=1056 [2022-11-19 07:14:51,322 INFO L87 Difference]: Start difference. First operand 113 states and 135 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 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) [2022-11-19 07:14:51,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:51,926 INFO L93 Difference]: Finished difference Result 209 states and 239 transitions. [2022-11-19 07:14:51,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:14:51,927 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 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 [2022-11-19 07:14:51,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:51,928 INFO L225 Difference]: With dead ends: 209 [2022-11-19 07:14:51,928 INFO L226 Difference]: Without dead ends: 209 [2022-11-19 07:14:51,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=168, Invalid=1163, Unknown=5, NotChecked=70, Total=1406 [2022-11-19 07:14:51,930 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 302 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 291 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:51,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 400 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 596 Invalid, 0 Unknown, 291 Unchecked, 0.4s Time] [2022-11-19 07:14:51,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-19 07:14:51,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 131. [2022-11-19 07:14:51,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 111 states have (on average 1.4054054054054055) internal successors, (156), 130 states have internal predecessors, (156), 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) [2022-11-19 07:14:51,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2022-11-19 07:14:51,937 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 18 [2022-11-19 07:14:51,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:51,937 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2022-11-19 07:14:51,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 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) [2022-11-19 07:14:51,938 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2022-11-19 07:14:51,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 07:14:51,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:51,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:14:51,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:14:52,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:14:52,148 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:14:52,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:52,149 INFO L85 PathProgramCache]: Analyzing trace with hash -106696340, now seen corresponding path program 1 times [2022-11-19 07:14:52,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:14:52,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341719776] [2022-11-19 07:14:52,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:52,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:14:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:14:52,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:14:52,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341719776] [2022-11-19 07:14:52,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341719776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:52,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:14:52,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 07:14:52,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893434810] [2022-11-19 07:14:52,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:52,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 07:14:52,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:14:52,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 07:14:52,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:14:52,510 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 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) [2022-11-19 07:14:52,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:52,783 INFO L93 Difference]: Finished difference Result 146 states and 165 transitions. [2022-11-19 07:14:52,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:14:52,785 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 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 [2022-11-19 07:14:52,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:52,786 INFO L225 Difference]: With dead ends: 146 [2022-11-19 07:14:52,786 INFO L226 Difference]: Without dead ends: 143 [2022-11-19 07:14:52,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:14:52,787 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 176 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:52,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 232 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:14:52,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-19 07:14:52,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 131. [2022-11-19 07:14:52,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 111 states have (on average 1.3963963963963963) internal successors, (155), 130 states have internal predecessors, (155), 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) [2022-11-19 07:14:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 155 transitions. [2022-11-19 07:14:52,790 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 155 transitions. Word has length 19 [2022-11-19 07:14:52,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:52,790 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 155 transitions. [2022-11-19 07:14:52,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 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) [2022-11-19 07:14:52,791 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 155 transitions. [2022-11-19 07:14:52,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 07:14:52,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:52,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:14:52,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-19 07:14:52,793 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:14:52,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:52,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1015428472, now seen corresponding path program 1 times [2022-11-19 07:14:52,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:14:52,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019941151] [2022-11-19 07:14:52,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:52,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:14:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:14:53,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:14:53,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019941151] [2022-11-19 07:14:53,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019941151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:53,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:14:53,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:14:53,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443012717] [2022-11-19 07:14:53,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:53,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:14:53,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:14:53,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:14:53,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:14:53,294 INFO L87 Difference]: Start difference. First operand 131 states and 155 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 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) [2022-11-19 07:14:53,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:53,638 INFO L93 Difference]: Finished difference Result 142 states and 158 transitions. [2022-11-19 07:14:53,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:14:53,639 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 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 [2022-11-19 07:14:53,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:53,639 INFO L225 Difference]: With dead ends: 142 [2022-11-19 07:14:53,639 INFO L226 Difference]: Without dead ends: 142 [2022-11-19 07:14:53,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:14:53,640 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 196 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:53,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 215 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:14:53,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-19 07:14:53,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 130. [2022-11-19 07:14:53,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 110 states have (on average 1.3909090909090909) internal successors, (153), 129 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) [2022-11-19 07:14:53,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 153 transitions. [2022-11-19 07:14:53,643 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 153 transitions. Word has length 19 [2022-11-19 07:14:53,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:53,645 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 153 transitions. [2022-11-19 07:14:53,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 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) [2022-11-19 07:14:53,646 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 153 transitions. [2022-11-19 07:14:53,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 07:14:53,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:53,647 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:14:53,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-19 07:14:53,647 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:14:53,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:53,647 INFO L85 PathProgramCache]: Analyzing trace with hash -334080248, now seen corresponding path program 1 times [2022-11-19 07:14:53,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:14:53,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642689874] [2022-11-19 07:14:53,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:53,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:14:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:14:53,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:14:53,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642689874] [2022-11-19 07:14:53,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642689874] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:14:53,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020585956] [2022-11-19 07:14:53,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:53,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:14:53,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:14:53,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:14:53,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:14:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:53,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-19 07:14:53,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:14:54,002 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 [2022-11-19 07:14:54,076 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:14:54,077 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 [2022-11-19 07:14:54,117 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 [2022-11-19 07:14:54,186 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 07:14:54,186 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 [2022-11-19 07:14:54,222 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 07:14:54,223 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2022-11-19 07:14:54,284 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 07:14:54,285 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 [2022-11-19 07:14:54,314 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 [2022-11-19 07:14:54,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:14:54,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:14:56,470 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_619 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$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_619) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) 1)) is different from false [2022-11-19 07:14:56,478 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:14:56,478 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 20 treesize of output 21 [2022-11-19 07:14:56,488 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:14:56,489 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 34 treesize of output 37 [2022-11-19 07:14:56,494 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 7 treesize of output 5 [2022-11-19 07:15:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:15:00,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020585956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:15:00,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1393841241] [2022-11-19 07:15:00,742 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-19 07:15:00,743 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:15:00,743 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:15:00,743 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:15:00,743 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:15:00,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:00,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:00,764 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 [2022-11-19 07:15:00,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:00,783 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 [2022-11-19 07:15:00,791 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 [2022-11-19 07:15:00,798 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 [2022-11-19 07:15:00,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:00,817 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 [2022-11-19 07:15:00,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:00,828 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 27 treesize of output 11 [2022-11-19 07:15:00,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:00,838 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 27 treesize of output 11 [2022-11-19 07:15:00,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:00,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:00,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:00,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:00,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:00,903 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 [2022-11-19 07:15:00,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:00,928 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 [2022-11-19 07:15:00,939 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 [2022-11-19 07:15:00,950 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 11 [2022-11-19 07:15:00,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:00,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,000 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-19 07:15:01,001 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 39 treesize of output 43 [2022-11-19 07:15:01,030 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:15:01,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2022-11-19 07:15:01,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:01,058 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-19 07:15:01,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 47 [2022-11-19 07:15:01,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,095 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-19 07:15:01,096 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 1 case distinctions, treesize of input 41 treesize of output 24 [2022-11-19 07:15:01,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:01,126 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-19 07:15:01,126 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 47 treesize of output 56 [2022-11-19 07:15:01,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,148 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:15:01,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 50 [2022-11-19 07:15:01,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,218 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 [2022-11-19 07:15:01,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,262 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 26 treesize of output 21 [2022-11-19 07:15:01,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,277 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 26 treesize of output 21 [2022-11-19 07:15:01,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,299 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 52 treesize of output 49 [2022-11-19 07:15:01,373 INFO L321 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2022-11-19 07:15:01,374 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 3 case distinctions, treesize of input 216 treesize of output 133 [2022-11-19 07:15:01,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 55 [2022-11-19 07:15:01,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:01,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2022-11-19 07:15:01,468 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 [2022-11-19 07:15:01,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:15:01,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:15:01,512 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:15:01,512 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 [2022-11-19 07:15:01,545 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:15:01,546 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 [2022-11-19 07:15:01,560 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 [2022-11-19 07:15:01,568 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 25 treesize of output 13 [2022-11-19 07:15:01,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:15:01,689 INFO L321 Elim1Store]: treesize reduction 60, result has 39.4 percent of original size [2022-11-19 07:15:01,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 199 treesize of output 210 [2022-11-19 07:15:01,769 INFO L321 Elim1Store]: treesize reduction 44, result has 41.3 percent of original size [2022-11-19 07:15:01,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 183 treesize of output 161 [2022-11-19 07:15:01,841 INFO L321 Elim1Store]: treesize reduction 44, result has 41.3 percent of original size [2022-11-19 07:15:01,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 145 [2022-11-19 07:15:02,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:15:02,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:15:02,114 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 [2022-11-19 07:15:02,143 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 [2022-11-19 07:15:02,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:15:02,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:15:02,211 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:15:02,212 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 [2022-11-19 07:15:02,220 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 [2022-11-19 07:15:02,240 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 [2022-11-19 07:15:02,245 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 [2022-11-19 07:15:02,253 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 [2022-11-19 07:15:02,260 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:15:03,142 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5668#(and (not (= (select |#valid| |ULTIMATE.start_main_~x~0#1.base|) 1)) (exists ((|v_ULTIMATE.start_main_~x~0#1.base_95| Int) (|v_ULTIMATE.start_main_~x~0#1.offset_80| Int)) (and (<= 0 |v_ULTIMATE.start_main_~x~0#1.offset_80|) (<= (+ 8 |v_ULTIMATE.start_main_~x~0#1.offset_80|) (select |#length| |v_ULTIMATE.start_main_~x~0#1.base_95|)) (= (select |#valid| |v_ULTIMATE.start_main_~x~0#1.base_95|) 1) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~x~0#1.base_95|) (+ 4 |v_ULTIMATE.start_main_~x~0#1.offset_80|)) |ULTIMATE.start_main_~state~0#1|))) (= |ULTIMATE.start_main_~state~0#1| 1) (<= (+ |ULTIMATE.start_main_~head~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~head~0#1.base|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) |ULTIMATE.start_main_~x~0#1.offset|) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~head~0#1.base|) 1) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|)) (or (not (= |ULTIMATE.start_main_~x~0#1.base| 0)) (not (= |ULTIMATE.start_main_~x~0#1.offset| 0))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:15:03,143 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:15:03,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:15:03,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2022-11-19 07:15:03,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305430418] [2022-11-19 07:15:03,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:15:03,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 07:15:03,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:03,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 07:15:03,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=907, Unknown=4, NotChecked=62, Total=1122 [2022-11-19 07:15:03,145 INFO L87 Difference]: Start difference. First operand 130 states and 153 transitions. Second operand has 21 states, 20 states have (on average 2.65) internal successors, (53), 21 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) [2022-11-19 07:15:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:03,848 INFO L93 Difference]: Finished difference Result 215 states and 245 transitions. [2022-11-19 07:15:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-19 07:15:03,849 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 21 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 19 [2022-11-19 07:15:03,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:03,850 INFO L225 Difference]: With dead ends: 215 [2022-11-19 07:15:03,850 INFO L226 Difference]: Without dead ends: 215 [2022-11-19 07:15:03,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=237, Invalid=1323, Unknown=4, NotChecked=76, Total=1640 [2022-11-19 07:15:03,852 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 525 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 463 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:03,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 360 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 416 Invalid, 0 Unknown, 463 Unchecked, 0.5s Time] [2022-11-19 07:15:03,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-19 07:15:03,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 145. [2022-11-19 07:15:03,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 125 states have (on average 1.448) internal successors, (181), 144 states have internal predecessors, (181), 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) [2022-11-19 07:15:03,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 181 transitions. [2022-11-19 07:15:03,856 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 181 transitions. Word has length 19 [2022-11-19 07:15:03,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:03,857 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 181 transitions. [2022-11-19 07:15:03,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 21 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) [2022-11-19 07:15:03,857 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 181 transitions. [2022-11-19 07:15:03,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 07:15:03,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:03,858 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:03,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:15:04,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:15:04,064 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2022-11-19 07:15:04,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:04,065 INFO L85 PathProgramCache]: Analyzing trace with hash -334080247, now seen corresponding path program 1 times [2022-11-19 07:15:04,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:04,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993562565] [2022-11-19 07:15:04,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:04,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:04,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:15:04,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:04,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993562565] [2022-11-19 07:15:04,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993562565] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:15:04,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719057191] [2022-11-19 07:15:04,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:04,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:15:04,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:15:04,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:15:04,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee228fbe-8a75-446a-9e2a-2d547eeb5e57/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:15:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:04,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-19 07:15:04,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:04,598 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 [2022-11-19 07:15:04,670 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 [2022-11-19 07:15:04,694 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-19 07:15:04,694 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 [2022-11-19 07:15:04,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:15:04,759 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 [2022-11-19 07:15:04,853 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 07:15:04,854 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 [2022-11-19 07:15:04,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:04,867 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 [2022-11-19 07:15:04,906 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 07:15:04,906 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2022-11-19 07:15:04,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:04,924 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 [2022-11-19 07:15:05,011 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-19 07:15:05,012 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 [2022-11-19 07:15:05,033 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 [2022-11-19 07:15:05,079 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 [2022-11-19 07:15:05,086 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 [2022-11-19 07:15:05,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:15:05,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:15:05,239 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_711 (Array Int Int)) (v_ArrVal_710 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_711) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_710) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_711 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_711) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4)))) is different from false [2022-11-19 07:15:05,305 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_711 (Array Int Int)) (v_ArrVal_710 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_711) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_710) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_711 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_711) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4))))) is different from false [2022-11-19 07:15:05,315 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:15:05,316 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 37 treesize of output 38 [2022-11-19 07:15:05,322 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:15:05,323 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 29 treesize of output 30 [2022-11-19 07:15:05,334 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:15:05,335 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 52 treesize of output 55 [2022-11-19 07:15:05,352 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:15:05,352 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 82 treesize of output 81 [2022-11-19 07:15:05,361 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 66 treesize of output 62 [2022-11-19 07:15:05,367 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 32 treesize of output 28 [2022-11-19 07:15:05,432 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:15:05,432 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 20 treesize of output 21 [2022-11-19 07:15:05,435 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:05,438 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 18 treesize of output 10 [2022-11-19 07:15:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-19 07:15:05,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719057191] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:15:05,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1446257957] [2022-11-19 07:15:05,588 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-19 07:15:05,588 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:15:05,588 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:15:05,588 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:15:05,588 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:15:05,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,609 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 [2022-11-19 07:15:05,626 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 [2022-11-19 07:15:05,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,635 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 [2022-11-19 07:15:05,643 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 [2022-11-19 07:15:05,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,661 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 [2022-11-19 07:15:05,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,670 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 27 treesize of output 11 [2022-11-19 07:15:05,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,680 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 27 treesize of output 11 [2022-11-19 07:15:05,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,717 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 [2022-11-19 07:15:05,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,747 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 [2022-11-19 07:15:05,759 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 11 [2022-11-19 07:15:05,770 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 [2022-11-19 07:15:05,808 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 07:15:05,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 47 [2022-11-19 07:15:05,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,825 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 39 treesize of output 33 [2022-11-19 07:15:05,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-19 07:15:05,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,875 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 [2022-11-19 07:15:05,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,890 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 34 treesize of output 21 [2022-11-19 07:15:05,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,903 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 34 treesize of output 21 [2022-11-19 07:15:05,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,960 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 [2022-11-19 07:15:05,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:05,990 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 26 treesize of output 21 [2022-11-19 07:15:06,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,005 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 26 treesize of output 21 [2022-11-19 07:15:06,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,026 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 [2022-11-19 07:15:06,101 INFO L321 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2022-11-19 07:15:06,101 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 3 case distinctions, treesize of input 199 treesize of output 120 [2022-11-19 07:15:06,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 35 [2022-11-19 07:15:06,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2022-11-19 07:15:06,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:06,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:06,261 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-19 07:15:06,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 455 treesize of output 360 [2022-11-19 07:15:06,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:06,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:06,340 INFO L321 Elim1Store]: treesize reduction 50, result has 36.7 percent of original size [2022-11-19 07:15:06,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 449 treesize of output 451 [2022-11-19 07:15:06,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:06,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:06,374 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-19 07:15:06,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 447 treesize of output 429 [2022-11-19 07:15:06,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,632 INFO L321 Elim1Store]: treesize reduction 278, result has 12.0 percent of original size [2022-11-19 07:15:06,632 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 457 treesize of output 464 [2022-11-19 07:15:06,735 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:06,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:06,847 INFO L321 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2022-11-19 07:15:06,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 551 treesize of output 436 [2022-11-19 07:15:06,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:06,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:06,950 INFO L321 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2022-11-19 07:15:06,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 487 treesize of output 477 [2022-11-19 07:15:06,984 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:06,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:06,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:06,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:07,019 INFO L321 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2022-11-19 07:15:07,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 492 treesize of output 478 [2022-11-19 07:15:07,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:07,761 INFO L321 Elim1Store]: treesize reduction 92, result has 22.0 percent of original size [2022-11-19 07:15:07,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 1527 treesize of output 914 [2022-11-19 07:15:07,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:07,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:15:07,822 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:07,974 INFO L321 Elim1Store]: treesize reduction 230, result has 17.9 percent of original size [2022-11-19 07:15:07,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 1387 treesize of output 1309 [2022-11-19 07:15:08,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:15:08,141 INFO L321 Elim1Store]: treesize reduction 144, result has 24.2 percent of original size [2022-11-19 07:15:08,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 1383 treesize of output 1312 [2022-11-19 07:15:08,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:15:08,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 07:15:08,573 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 [2022-11-19 07:15:08,606 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:15:08,606 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 [2022-11-19 07:15:08,633 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:15:08,633 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 [2022-11-19 07:15:08,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:15:08,663 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 25 treesize of output 13 [2022-11-19 07:15:08,671 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 [2022-11-19 07:15:08,860 INFO L321 Elim1Store]: treesize reduction 100, result has 36.7 percent of original size [2022-11-19 07:15:08,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 309 treesize of output 335 [2022-11-19 07:15:09,023 INFO L321 Elim1Store]: treesize reduction 52, result has 60.0 percent of original size [2022-11-19 07:15:09,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 293 treesize of output 294 [2022-11-19 07:15:09,173 INFO L321 Elim1Store]: treesize reduction 52, result has 60.0 percent of original size [2022-11-19 07:15:09,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 221 treesize of output 270